WO2014139405A1 - 小小区承载的激活与去激活方法及设备 - Google Patents

小小区承载的激活与去激活方法及设备 Download PDF

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Publication number
WO2014139405A1
WO2014139405A1 PCT/CN2014/073213 CN2014073213W WO2014139405A1 WO 2014139405 A1 WO2014139405 A1 WO 2014139405A1 CN 2014073213 W CN2014073213 W CN 2014073213W WO 2014139405 A1 WO2014139405 A1 WO 2014139405A1
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WIPO (PCT)
Prior art keywords
small cell
bearer
downlink data
cell
original
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PCT/CN2014/073213
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English (en)
French (fr)
Inventor
江小威
杨宁
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China Mobile Communications Group Co Ltd
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China Mobile Communications Corp
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Publication date
Priority claimed from CN201310077875.7A external-priority patent/CN104053146B/zh
Priority claimed from CN201310078263.XA external-priority patent/CN104053196B/zh
Application filed by China Mobile Communications Corp filed Critical China Mobile Communications Corp
Publication of WO2014139405A1 publication Critical patent/WO2014139405A1/zh
Anticipated expiration legal-status Critical
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/04—Reselecting a cell layer in multi-layered cells
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and device for activating and deactivating a small cell bearer. Background technique
  • WiF i WiF i
  • the Pico base station and the home base station defined in the industry standard are collectively referred to as a small cell (Sma ll Ce ll ). Since the deployment of the small cell supports interference management, node self-starting, and sharing the core network and the network management system with the cellular network, the deployment and management thereof are relatively simple, and has become the mainstream direction for solving the coverage and capacity of indoor and hotspot data services in the future.
  • 3GPP R12 it is possible for a small cell to operate in an independent mode of operation, or it may work in a non-independent mode of operation that requires cooperation with a macro base station.
  • the non-independent working mode means that for some terminals (such as high-speed mobile terminals), the access anchor point is always a macro base station, and the small cell only provides a channel for transmitting data, and all control plane signaling passes through the acer base.
  • the station is sent out; the independent working mode means that the terminal can access the small cell without relying on any macro base station help.
  • the small cell A is working in the non-independent working mode, and the corresponding control plane signaling is sent by the macro base station in Figure 1.
  • the small cell B is working in the independent mode, and the terminal 2 does not need to rely on.
  • the help of the macro base station can access the small cell B.
  • the embodiments of the present invention provide a method and a device for activating and deactivating a small cell bearer, which are used to implement activation and deactivation of a small cell bearer operating in a non-independent working mode.
  • a method for activating a small cell comprising: after the macro cell sends a bearer activation request to the small cell, buffering downlink data to be sent by the radio bearer established by the small cell; and receiving a bearer activation confirmation message, where the bearer activation confirmation The message is sent by the small cell that establishes the radio bearer according to the bearer activation request; and the buffered downlink data is sent to the small cell that establishes the radio bearer.
  • An activation method for a small cell bearer comprising: receiving, by a small cell, a bearer activation request sent by a macro cell; and after establishing a radio bearer according to the bearer activation request, sending a bearer activation acknowledgement message to the macro cell; the small cell receiving the macro cell Sending downlink data to be sent to the terminal; and transmitting the downlink data to the terminal by using a radio bearer established by the small cell.
  • a method for deactivating a small cell includes: the macro cell sending a bearer deactivation command to the small cell, to instruct the small cell to deactivate the radio bearer according to the bearer deactivation command; Determining downlink data successfully acquired at the small cell; and providing the downlink data to the terminal.
  • a deactivation method for a small cell bearer includes: receiving, by the small cell, a bearer deactivation command sent by the macro cell; and performing an operation of deactivating the small cell radio bearer according to the bearer deactivation command.
  • the method further includes: the small cell sending, to the macro cell, a message for notifying the terminal of the receiving status of the downlink data sent by the small cell; After the small cell receives the bearer deactivation command, the method further includes: the small cell transmitting, to the macro cell, downlink data that is not successfully obtained by the terminal from the small cell.
  • An activation device carried by a small cell comprising: an activation request sending unit, configured to send a bearer activation request to the small cell; and a buffering unit, configured to cache the wireless to be established by the small cell after the activation request sending unit sends the bearer activation request
  • the bearer transmits the downlink data
  • the acknowledgement message receiving unit is configured to receive the bearer activation acknowledgement message, where the bearer activation acknowledgement message is sent by the small cell that establishes the radio bearer according to the bearer activation request sent by the activation request sending unit;
  • a buffer data sending unit configured to send the downlink data buffered by the buffer unit to the small cell that establishes a radio bearer.
  • An activation device carried by a small cell comprising: an activation request receiving unit, configured to receive a bearer activation request sent by a macro cell; and an acknowledgement message sending unit, configured to establish a wireless in the bearer activation request received according to the activation request receiving unit After the bearer, the bearer activation acknowledgement message is sent to the macro cell; the downlink data receiving unit is configured to receive the downlink data to be sent to the terminal that is sent by the macro cell, and the downlink data sending unit is configured to use the radio bearer established by the small cell to send the downlink data. The downlink data received by the receiving unit is sent to the terminal.
  • a deactivation device carried by a small cell comprising: a deactivation command sending unit, configured to send a bearer deactivation command to the small cell, to instruct the small cell to deactivate the radio bearer according to the bearer deactivation command; a data obtaining unit, configured to obtain downlink data that is not successfully obtained by the terminal from the small cell, and a downlink data providing unit, configured to provide the downlink data obtained by the downlink data obtaining unit to the terminal.
  • a deactivation device carried by a small cell comprising: a deactivation command receiving unit, configured to receive a bearer deactivation command sent by the macro cell; and a deactivation execution unit, configured to deactivate the bearer received according to the deactivation command receiving unit And the instruction is performed to perform the operation of deactivating the small cell radio bearer.
  • the device further includes: a message sending unit, configured to send, by the deactivation command receiving unit, the macro cell After the deactivation command is sent, the macro cell is sent a message for notifying the terminal of the receiving status of the downlink data sent by the small cell; or the device further includes: a downlink data sending unit, configured to receive, by the deactivation command receiving unit After the bearer deactivation command sent by the macro cell, the downlink data that is not successfully obtained by the terminal from the small cell is sent to the macro cell.
  • the above solution is based on the characteristics of the non-independent working mode of the small cell, and proposes to establish a radio bearer between the small cell and the terminal by transmitting a bearer activation request from the macro cell to the small cell, thereby realizing the non-independent work. Activation of small cell bearers in mode.
  • the embodiment of the present invention further provides a method and a device for activating and deactivating a small cell bearer when a terminal performs handover between different macro cells, for a small cell operating in a non-independent working mode.
  • a scheme for activating and deactivating a small cell bearer under a target macro cell to which the terminal is handed over is implemented.
  • An activation method for a small cell bearer includes: after receiving a handover request command sent by the original macro cell, the target macro cell determines a small cell for carrying the service data of the terminal; and when the determined small cell is the current bearer When the original small cell of the service data is described, the bearer path switching request including the destination tunnel number is sent to the original small cell to indicate that the original small cell switches to the target macro cell and the original macro cell and the original small cell a tunnel between the cells; when the determined small cell is a target small cell different from the original small cell, sending a bearer activation request to the target small cell to activate the target small cell to establish a radio bearer.
  • a method for deactivating a small cell comprising: sending, by the original macro cell, a handover request command to the target macro cell; receiving a handover confirmation message sent by the target macro cell according to the handover request command; wherein the handover confirmation message is a target
  • the macro cell is sent after determining the target small cell carrying the service data of the terminal; when the determined target small cell is different from the original small cell currently carrying the service data, the original macro cell is to the original small cell Transmitting a bearer deactivation command to instruct the original small cell to deactivate its own radio bearer according to the bearer deactivation command.
  • An activation device carried by a small cell comprising: a small cell determining unit, configured to: after receiving a handover request command sent by the original macro cell, determine a small cell for carrying service data of the terminal; and a handover request sending unit, configured to: When the small cell determined by the small cell determining unit is currently carrying the service And transmitting, by the original small cell, a bearer path switching request including the destination tunnel number, to indicate that the original small cell switches to the target macro cell and the original small cell indicated by the destination tunnel number.
  • an activation request sending unit configured to: when the small cell determined by the small cell determining unit is a target small cell different from the original small cell, send a bearer activation request to the target small cell to activate The target small cell establishes a radio bearer.
  • a deactivation device carried by a small cell comprising: a handover request command sending unit, configured to send a handover request command to a target macro cell; and a handover confirmation message receiving unit, configured to receive a handover sent by the target macro cell according to the handover request command sending unit a handover confirmation message sent by the requesting command; wherein the handover confirmation message is sent by the target macro cell after determining the target small cell of the service data of the bearer terminal; and the bearer deactivation instruction sending unit is configured to receive the handover confirmation message After receiving the handover confirmation message, the unit sends a bearer deactivation command to the original small cell when the target small cell is different from the original small cell that currently carries the service data, to indicate that the original small cell is The bearer deactivation command deactivates its own radio bearer.
  • the target macro cell determines a small cell for carrying the service data of the terminal, and then based on whether the determined small cell is the current bearer terminal.
  • the determination of the condition of the original small cell of the data sends a bearer activation request to the target small cell that needs to be activated to activate the target small cell bearer. Therefore, for a small cell operating in a non-independent working mode, the solution proposes to activate a small cell bearer under the target macro cell to which the terminal is handed over when the terminal switches between different macro cells.
  • FIG. 1 is a schematic diagram of a small cell operating in a non-independent working mode and an independent working mode
  • FIG. 2 is a schematic flowchart of a method for activating a small cell bearer on a macro cell side according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a method for activating a small cell bearer on a small cell side according to an embodiment of the present invention
  • 4 is a schematic flowchart of a method for deactivating a small cell bearer on a macro cell side according to an embodiment of the present invention
  • FIG. 5 is a schematic flowchart of a deactivation method of a small cell bearer on a small cell side according to an embodiment of the present invention
  • FIG. 6a is a schematic diagram of an implementation scenario of Embodiment 1;
  • FIG. 8 is a schematic diagram of an implementation scenario of Embodiments 3, 4, and 5;
  • Embodiment 9 is a flowchart of a specific implementation of Embodiment 4.
  • Embodiment 10 is a flowchart of a specific implementation of Embodiment 5.
  • FIG. 11 is a schematic flowchart of a method for activating a small cell bearer on a target macro cell side according to an embodiment of the present disclosure
  • FIG. 12 is a schematic diagram of a scenario in which a service data of a terminal is not currently carried by any small cell;
  • FIG. 12 is a schematic flowchart of a method for deactivating a small cell carried by a primary macro cell according to an embodiment of the present invention;
  • FIG. 12b is a schematic diagram of a scenario in which a cell of a service data of a bearer terminal determined by a target macro cell is not a small cell, but is a target macro cell itself;
  • FIG. 13a is a schematic diagram of an application scenario of a terminal moving from a small cell under the original macro cell to another small cell under the target macro cell;
  • FIG. 13b is a schematic diagram of a specific implementation process in the application scenario shown in FIG. 13a;
  • Figure 14a is a schematic diagram of an application scenario in which a terminal moves from a primary macro cell to a target macro cell
  • Figure 14b is a schematic flowchart of a specific implementation process in the application scenario shown in Figure 14a;
  • 15a is a schematic diagram of a user plane protocol stack that may be adopted by a macro base station, a small cell, and a terminal UE according to an embodiment of the present invention
  • 15b is a schematic diagram of another user plane protocol stack that may be adopted by a macro base station, a small cell, and a terminal UE according to an embodiment of the present invention
  • FIG. 15c is a schematic diagram of a control plane protocol stack that may be adopted by a macro base station, a small cell, and a terminal UE according to an embodiment of the present invention. detailed description
  • the embodiment of the present invention provides an activation scheme for the small cell bearer. Based on the characteristics of the non-independent working mode of the small cell, the solution proposes to establish a radio bearer between the small cell and the terminal by transmitting a bearer activation request from the macro cell to the small cell.
  • an embodiment of the present invention provides a method for activating a small cell bearer on a macro cell side, where the method mainly includes the following steps as shown in FIG. 2:
  • Step 21 The macro cell sends a bearer activation request to the small cell.
  • the role of the bearer activation request is to indicate that the radio bearer of the terminal service is mapped to a certain layer of the small cell, for example, to the Packet Data Convergence Protocol (PDCP) layer.
  • the bearer activation request may carry the relevant context of the terminal, such as the cell radio network temporary identifier (C-RNTI, Celet Radio Network Temporary Ident if ier) of the macro cell, the C-RNTI of the terminal in the small cell, and the terminal capability information. Wait.
  • the related context may also carry information of an access layer configuration (such as MAC/RLC/PDCP configuration), and a wireless bearer context (such as Quality of Service (QoS) information).
  • QoS Quality of Service
  • the terminal accessing the macro cell may be in two states. One is in a state where no small cell is connected, and the other is in a state in which a small cell has been accessed.
  • the small cell that the terminal currently accesses is simply referred to as the “original small cell”.
  • step 21 may be different for the above two states.
  • the macro cell may determine the terminal according to the QoS of the terminal service, the small cell signal quality at the location where the terminal is located, and/or the load information of the macro cell and the small cell, and the like. Whether the service can be carried by the small cell. If the judgment result is yes, the macro cell
  • the bearer activation request can be sent to a small cell that has a connection relationship with itself.
  • the macro cell may send the request to a small cell or a plurality of small cells that have a connection relationship with itself; or may send the request only to a small cell that has a connection relationship with itself and whose load is not greater than a preset load threshold. ; and many more.
  • the macro cell may be based on the terminal service.
  • the macro cell may send the bearer activation request to other small cells other than the original cell that have a connection relationship with itself.
  • the macro cell may also send a bearer deactivation command to the original cell.
  • the bearer deactivation command is used to instruct the original small cell to perform deactivation on its radio bearer.
  • the downlink data that is not successfully obtained by the terminal from the original small cell may be further obtained.
  • the downlink data can be obtained by, but not limited to, the following two methods:
  • the first mode the method requires the macro cell to have the function of backing up the downlink data sent to the original small cell, and the original small cell is required to send the receiving state to the macro cell to notify the terminal of the downlink data sent by the original small cell.
  • the function of the message Based on the functions, the macro cell can obtain downlink data that is not successfully acquired by the terminal from the original small cell from the downlink data backed up by the macro cell according to the foregoing message sent by the original small cell.
  • the second mode does not require the macro cell to have the function of backing up the downlink data sent to the original small cell, but requires the original cell to send the downlink data to the macro cell that is not successfully obtained by the terminal from the original small cell.
  • the macro cell can use the downlink data sent by the original small cell and not successfully obtained by the terminal from the original small cell as the downlink data obtained by the macro cell and not successfully obtained by the terminal from the original small cell.
  • Step 22 The macro cell receives a bearer activation confirmation message.
  • the bearer activation confirmation message is sent by the small cell that establishes the radio bearer according to the bearer activation request.
  • the macro cell may also be in the case that the terminal is currently connected to the original small cell.
  • the bearer deactivation command is sent to the original small cell.
  • the bearer deactivation command is sent to the original small cell, and then the bearer activation request is sent to the small cell other than the original cell.
  • the bearer is deactivated to the original small cell.
  • the manner of the command can prevent the radio bearer from being failed to be established in the other small cells, which may cause the terminal to wait for a long time to re-access the small cell to obtain downlink data, thereby affecting the user experience.
  • Step 23 The macro cell buffers downlink data to be sent by the wireless bearer established by the small cell that sends the activation confirmation message.
  • the macro cell may perform an operation of buffering the downlink data (that is, the downlink data to be sent to the terminal by using the radio bearer) immediately after the bearer activation request is sent to the small cell.
  • the downlink data that is, the downlink data to be sent to the terminal by using the radio bearer
  • step 23 is performed to avoid the problem that the downlink data transmission fails due to the fact that the radio bearer may not be established between the terminal and the small cell that sends the activation confirmation message.
  • the downlink data described in step 23 may include: downlink data that is sent by using the radio bearer between the original small cell and the terminal.
  • Step 24 The macro cell sends the buffered downlink data to the small cell.
  • the small cell may send a message to the macro cell to notify the terminal that the radio bearer has been established.
  • the macro cell can send its buffered downlink data to the small cell.
  • the macro cell may also back up the downlink data that is sent by the macro cell, and delete the backed up downlink data after receiving the message that the downlink data is successfully received by the terminal.
  • Such a processing manner can realize that when the downlink data is not successfully received by the terminal, the macro cell can perform retransmission of the downlink data, thereby avoiding the problem that the downlink data transmission fails and is lost.
  • the foregoing method provided by the embodiment of the present invention is based on the feature of the non-independent working mode of the small cell, and proposes to establish a radio bearer between the small cell and the terminal by transmitting a bearer activation request from the macro cell to the small cell, thereby implementing the method.
  • Activation of small cell bearers operating in a non-independent mode of operation For the same inventive concept as the activation method of the small cell bearer shown in FIG. 2, for the small cell The operation performed on one side, the embodiment of the present invention further provides another method for activating a small cell, and the method mainly includes the following steps as shown in FIG. 3:
  • Step 31 The small cell receives a bearer activation request sent by the macro cell.
  • Step 32 After establishing a radio bearer according to the bearer activation request, the small cell sends a bearer activation confirmation message to the macro cell.
  • Step 33 The small cell receives downlink data that is sent by the macro cell and is to be sent to the terminal.
  • Step 34 The small cell sends the downlink data sent by the macro cell to the terminal by using the radio bearer established between the UE and the terminal.
  • the embodiment of the present invention further provides a method for deactivating a small cell bearer on a macro cell side, and the method mainly includes the following Steps:
  • Step 41 The macro cell sends a bearer deactivation command to the small cell to instruct the small cell to deactivate the radio bearer according to the bearer deactivation command.
  • the macro cell may trigger the macro cell to activate the small cell bearer, if the macro cell receives the bearer deletion command of the core network, the small cell is overloaded, or the signal quality of the small cell is degraded.
  • the macro cell may send a bearer deactivation command to the small cell. If the bearer service of the small cell does not end, the macro cell may stop forwarding the downlink data of the bearer service to the small cell, and buffer the part of the downlink data that is stopped from being sent, so as to be subsequently based on the macro cell and the terminal.
  • the radio bearer or based on the radio bearer between the terminal and other small cells, sends the part of the downlink data to the terminal.
  • Step 42 The macro cell sends a radio bearer reconfiguration message to the terminal that establishes the radio bearer with the small cell to instruct the terminal to deactivate the radio bearer established between the terminal and the small cell.
  • the macro At the same time as or after the cell sends the bearer deactivation command to the small cell, the terminal may be instructed to perform reconfiguration by sending signaling, thereby deactivating the radio bearer between the terminal and the receiving small cell carrying the deactivation command. If the deactivation of the radio bearer is not caused by the bearer deletion of the network, the macro cell may instruct the terminal to map the radio bearer between the terminal and the small cell to the radio bearer between the terminal and the macro cell.
  • the macro cell may carry configuration information related to mapping the radio bearer between the terminal and the small cell to the radio bearer between the terminal and the macro cell in the radio bearer reconfiguration message sent to the terminal.
  • Step 43 The macro cell obtains downlink data that is not successfully obtained by the terminal from the small cell. It should be noted that when the macro cell is configured to back up downlink data sent to the small cell, and the small cell bearer is not deactivated. The small cell feeds back information about the receiving status of the downlink data to the macro cell, to indicate that the macro cell deletes the downlink data that has been successfully received by the terminal from the downlink data that is backed up by the macro cell, or the downlink data that is not successfully received by the terminal. Resend. Based on such a scenario, after the small cell bearer is deactivated, the macro cell can directly determine the downlink data that is not successfully received by the terminal from the downlink data that is backed up by itself.
  • the macro cell When the macro cell is configured not to back up the downlink data sent to the small cell, after the small cell bearer is deactivated, the macro cell needs to receive further: the small cell that is deactivated by the bearer is buffered and sent to Downlink data of the macro cell that is not successfully received by the terminal.
  • Step 44 The macro cell provides the obtained downlink data to the terminal.
  • the embodiment of the present invention further provides another method for deactivating the small cell bearer, which is the same as the deactivation method of the small cell bearer in FIG. It mainly includes the following steps as shown in Figure 5:
  • Step 51 The small cell receives a bearer deactivation command sent by the macro cell.
  • Step 52 The small cell performs an operation of deactivating the radio bearer of the small cell according to the bearer deactivation command.
  • the small cell sends a message to the macro cell to notify the terminal of the receiving status of the downlink data sent by the small cell.
  • the small cell sends downlink data that is not successfully obtained by the terminal from the small cell to the macro cell.
  • the above is mainly an application process of the activation/deactivation method of the small cell bearer provided by the embodiment of the present invention.
  • FIG. 6a A schematic diagram of the implementation of Embodiment 1 is shown in Figure 6a.
  • a macro base station (Macro eNB) exists in the macro cell shown in Fig. 6a, and the macro base station is provided with at least one small cell base station (i.e., sma ll ll eNB, such as a P i co base station or a home base station) connected thereto.
  • FIG. 6a further includes a terminal (UE) that is in the macro cell and is not currently connected to any small cell.
  • UE terminal
  • the steps shown in Figure 6b can be used. Achieve activation of small cells:
  • Step 61 For the terminal in the connected state of the macro cell, when there is uplink/downlink service, if the macro base station determines that the service needs to be carried by the small cell (the judgment may be based on the QoS of the current service, the signal quality of the small cell, and the macro cell)
  • the macro cell ie, the macro base station
  • sends a bearer activation request to the small cell ie, to the base station of the small cell
  • map the radio bearer of the service to a certain layer of the small cell ( Specifically, it can be mapped at the PDCP layer).
  • the request message may carry the relevant context of the terminal (such as the C-RNTI of the terminal in the macro cell, the C-RNTI of the terminal in the small cell, the terminal capability information, etc.), and the access layer configuration information (such as the configuration of the MAC/RLC/PDCP). , radio bearer context (such as QoS information).
  • relevant context of the terminal such as the C-RNTI of the terminal in the macro cell, the C-RNTI of the terminal in the small cell, the terminal capability information, etc.
  • the access layer configuration information such as the configuration of the MAC/RLC/PDCP
  • radio bearer context such as QoS information
  • Step 62 The small cell receives the bearer activation request, and establishes a corresponding radio bearer. If the cell is successfully established, the bearer activates the acknowledgement to the macro cell.
  • Step 63 After receiving the bearer activation confirmation, the macro cell buffers the downlink data of the bearer that subsequently arrives (is not sent to the terminal through the macro base station air interface).
  • Step 64 Establish a radio bearer with the small cell by using the signaling configuration terminal.
  • Step 65 The terminal performs configuration according to the reconfiguration message of the macro cell, for example, establishing some bearers located in the macro cell to the radio bearer of the small cell.
  • Step 66 After completing the configuration, the terminal feeds back a reconfiguration complete message to the base station. After receiving the reconfiguration complete message, the macro cell may start to forward the buffered data and subsequent incoming data to the small cell.
  • the macro cell retains data backup.
  • the small cell receives feedback from the terminal on the downlink data, it feeds back the data reception status to the macro cell.
  • the macro base station deletes the data backup for the data that has been received in order.
  • the macro cell does not reserve data backup, and the small cell does not need to feed back to the macro cell whether the downlink data is correctly sent.
  • Step 67 After obtaining the downlink synchronization and random access, the terminal can send the uplink and downlink data.
  • Embodiment 2 specifically includes the following steps as shown in FIG. 7, by performing the steps, deactivation of the small cell can be implemented:
  • Step 71 The macro cell receives the bearer deletion command of the core network, or is due to the small cell load and The macro cell needs to deactivate the bearer on the small cell, and the macro cell sends a bearer deactivation command to the small cell. If the bearer service does not end, the macro base station needs to stop forwarding the downlink data of the bearer to the small cell. And cache the subsequent downlink data).
  • the macro cell deactivates the small cell bearer by using the signaling reconfiguration terminal. If the bearer deactivation is not caused by the bearer deletion of the network, the macro cell needs to establish the bearer on the small cell on the macro cell, and the reconfiguration message is The relevant configuration of the bearer in the macro cell is included.
  • Step 72 After the small cell receives the deactivation command, if the macro cell adopts the first processing mode of forwarding data to the small cell as described above, the small cell directly deactivates the bearer; and if the macro cell adopts the foregoing method In the second processing method of forwarding data to the small cell, the packet buffered in the small cell that has not received the correct reception feedback is forwarded to the macro cell for buffering, and then the bearer is deactivated.
  • Step 73 The macro cell sends a configuration message to the terminal.
  • Step 74 After receiving the configuration message of the macro cell, the terminal deletes the bearer of the small cell according to the configuration and establishes the bearer that is deleted at the macro base station.
  • Step 75 The terminal sends a reconfiguration complete message to the macro cell.
  • Step 76 The terminal performs uplink and downlink data transmission and reception of the bearer on the macro cell.
  • Step 77 After the macro cell receives the reconfiguration complete message sent by the terminal, if the bearer service originally carried by the small cell is not ended, the data buffered for the bearer service and subsequent data may be sent to the terminal through the air interface of the macro cell. .
  • Embodiment 3, Embodiment 4 and Embodiment 5 are small cell activation and deactivation processes in a specific scenario.
  • the schematic diagram of the specific scenario is as shown in FIG. 8.
  • the small cell a and the small cell b are both located within the signal coverage of the macro base station A; the terminal UE moves out of the small cell a and then enters another small cell b.
  • the base station in the small cell a is the original sma l l cel l eNB, and the base station in the small cell b is the target sma l l cel l e
  • Embodiment 3 the specific process of implementing deactivation of the small cell a and activation of the small cell b in Embodiment 3 can be referred to the foregoing Embodiment 1 and Embodiment 2.
  • the small cell a is deactivated according to the procedure as described in Embodiment 2, and then the small cell b is activated according to the procedure described in Embodiment 1, thereby implementing bearer mapping of the small cell a to the service data of the terminal. Go to the bearer of the small cell b.
  • Example 4 Example 4
  • Step 91 After the macro cell determines that the service of the small cell a needs to be moved to another small cell b under the macro cell, the macro cell eNB sends a bearer deactivation command to the original small cell eNB, and stops forwarding the downlink data of the bearer to the original small. Cell eNB, and buffers the subsequent downlink data.
  • the macro cell determines whether it is necessary to move the service of the small cell a to the small cell b.
  • the interpretation basis may be the cell load condition and the signal quality.
  • Step 92 The macro cell sends a bearer activation request to the target small cell eNB.
  • Step 93 The original small cell eNB performs deactivation, and forwards the downlink data that the self-encrypted unacknowledged terminal has received to the macro base station.
  • Step 94 The macro base station buffers downlink data sent by the original small cell eNB.
  • Step 95 The target small cell eNB feeds back the bearer activation acknowledgement to the macro base station after activating the radio bearer according to the bearer activation request.
  • Step 96 After receiving the bearer activation confirmation of the target small cell eNB, the macro base station sends a reconfiguration command to the terminal to transfer the original small cell eNB to the target smal 1 cell eNB.
  • Step 97 The terminal performs configuration according to the reconfiguration message of the macro cell. After the configuration is complete, the terminal feeds back the reconfiguration complete message to the macro base station. After that, the terminal can send uplink and downlink data after the target small cell eNB obtains downlink synchronization and randomly accesses.
  • Step 98 After receiving the reconfiguration complete message, the macro cell may start to forward the buffered data and subsequent incoming data to the target small cell eNB.
  • the specific process of implementing deactivation of the small cell a and activation of the small cell b in Embodiment 5 is as shown in FIG. 10, and mainly includes the following steps:
  • Step 101 After the macro cell determines that the service of the small cell a needs to be moved to another small cell b under the macro cell, the macro cell sends an bearer activation request to the target small cell eNB.
  • Step 102 The target small cell eNB feeds back a bearer activation acknowledgement to the macro cell to notify the macro cell small cell b that the radio bearer has been successfully activated.
  • Step 103 After receiving the bearer activation confirmation of the target small cell eNB, the macro cell sends the original small to the original small.
  • the cell eNB sends a bearer deactivation command, and stops forwarding the downlink data of the bearer to the original small cell, and buffers the subsequent downlink data.
  • Step 104 The original small cell eNB performs its own wireless bearer deactivation after receiving the bearer deactivation command, and forwards the downlink data that has been sent to the terminal but is not determined to be successfully received by the terminal to the macro cell.
  • Step 105 The macro cell caches downlink data sent by the original small cell eNB.
  • Step 106 The macro cell sends a reconfiguration command to the terminal to instruct the terminal to transfer the original small cell eNB to the target small cell eNB.
  • Step 107 The terminal performs configuration according to the reconfiguration message of the macro cell. After the configuration is complete, the terminal feeds back a reconfiguration complete message to the base station. After that, the terminal can send uplink and downlink data after the target small cell eNB obtains downlink synchronization and randomly accesses.
  • Step 108 After receiving the reconfiguration complete message, the macro cell starts to forward the buffered data and the subsequent incoming data to the target small cell eNB. After that, the terminal transmits the uplink and downlink data to the target small cell eNB.
  • the embodiment of the present invention further provides an activation device carried by a small cell, in order to implement activation of a small cell bearer that operates in a non-independent mode of operation.
  • the device mainly includes the following units:
  • An activation request sending unit configured to send a bearer activation request to the small cell
  • a buffering unit configured to: after the activation request sending unit sends the bearer activation request, buffer the downlink data to be sent by the radio bearer established by the small cell;
  • An acknowledgement message receiving unit configured to receive a bearer activation acknowledgement message, where the bearer activation acknowledgement message is sent by the small cell of the radio bearer according to the bearer activation request sent by the activation request sending unit;
  • a buffer data sending unit configured to send the downlink data buffered by the buffer unit to the small cell that establishes the wireless bearer.
  • the activation request sending unit may further divide into:
  • a determining module configured to determine whether to transfer the service of the original small cell to another small cell connected to the macro cell;
  • the sending module is configured to send a bearer activation request to other small cells when the judgment result obtained by the determining unit is yes.
  • the activation request sending unit sends a bearer activation request to the small cell, the terminal does not establish a radio bearer with any small cell; the activation request sending unit may be divided into:
  • a determining module configured to determine whether the service of the terminal can be carried by the small cell
  • a sending module configured to send a bearer activation request to the small cell connected to the device when the judgment result obtained by the determining module is YES.
  • the foregoing apparatus provided in this embodiment of the present invention may further include:
  • a deactivation command sending unit configured to send a bearer deactivation command to the original small cell, where the activation request sending unit sends a bearer activation request to the small cell, where the instruction is used to indicate that the original small cell performs deactivation on the radio bearer;
  • an obtaining unit configured to obtain, after the deactivation command sending unit sends the bearer deactivation command, downlink data that is not successfully obtained by the terminal from the original small cell;
  • the downlink data sending unit is configured to: after the acknowledgement message receiving unit receives the bearer activation acknowledgement message, send the downlink data obtained by the obtaining unit to the small cell that establishes the radio bearer.
  • the device may further comprise:
  • a deactivation command sending unit configured to send a bearer deactivation command to the original small cell after the acknowledgment message receiving unit receives the bearer activation acknowledgment message, where the instruction is used to indicate that the original small cell performs deactivation on the radio bearer;
  • an obtaining unit configured to obtain, after the deactivation command sending unit sends the bearer deactivation command, downlink data that is not successfully obtained by the terminal from the original small cell;
  • the downlink data sending unit is configured to: after the acknowledgement message receiving unit receives the bearer activation acknowledgement message, send the downlink data obtained by the obtaining unit to the small cell that establishes the radio bearer.
  • the obtaining unit may be specifically configured to: after the deactivation command sending unit sends the bearer deactivation command, according to the original small cell
  • the sent message for notifying the terminal of the receiving status of the downlink data sent by the original small cell is obtained from the downlink data backed up by the backup unit, and the downlink data that is not successfully obtained by the terminal from the original small cell is obtained.
  • the obtaining unit may be specifically used to: After transmitting the bearer deactivation command, the live command sending unit receives the downlink data that is sent by the original small cell and is not successfully obtained by the terminal from the original small cell.
  • the embodiment of the present invention further provides an activation device carried by a small cell, the device comprising:
  • An activation request receiving unit configured to receive a bearer activation request sent by the macro cell
  • An acknowledgement message sending unit configured to send a bearer activation confirmation message to the macro cell after establishing the radio bearer according to the bearer activation request received by the activation request receiving unit;
  • the downlink data receiving unit is configured to receive the downlink data that is sent by the macro cell to be sent to the terminal, and the downlink data sending unit is configured to send the downlink data received by the downlink data receiving unit to the terminal by using the radio bearer established by the small cell.
  • the embodiment of the present invention further provides a deactivation device carried by a small cell, the device comprising:
  • a deactivation command sending unit configured to send a bearer deactivation command to the small cell, to instruct the small cell to deactivate the radio bearer according to the bearer deactivation command;
  • a downlink data obtaining unit configured to obtain downlink data that is not successfully acquired by the terminal from the small cell
  • the device may further include a reconfiguration message sending unit.
  • the unit is configured to send a reconfiguration message to the terminal, to instruct the terminal to map the radio bearer of the small cell to the radio bearer of the macro cell according to the reconfiguration message.
  • the deactivated device carried by the small cell further includes a backup unit for backing up downlink data sent to the small cell
  • the downlink data obtaining unit may be specifically configured to: according to the small cell sent for notification
  • the terminal obtains the downlink data that is not successfully obtained by the terminal from the small cell from the downlink data backed up by the backup unit, for the message of the receiving state of the downlink data sent by the small cell.
  • the downlink data obtaining unit may be specifically configured to: receive downlink data that is sent by the small cell and is not successfully obtained by the terminal from the small cell.
  • the embodiment of the present invention further provides another small cell bearer deactivation device, and the device includes the following functional units:
  • Deactivating an instruction receiving unit configured to receive a bearer deactivation command sent by the macro cell
  • Deactivating the execution unit configured to perform an operation of deactivating the small cell radio bearer according to the bearer deactivation command received by the deactivation instruction receiving unit.
  • the device may further include: a message sending unit, configured to: after the deactivation command receiving unit receives the bearer deactivation command sent by the macro cell, send, to the macro cell, the receiving state for notifying the terminal of the downlink data sent by the small cell Message.
  • a message sending unit configured to: after the deactivation command receiving unit receives the bearer deactivation command sent by the macro cell, send, to the macro cell, the receiving state for notifying the terminal of the downlink data sent by the small cell Message.
  • the unit that the device may further include is a downlink data sending unit.
  • the unit is configured to send downlink data that is not successfully obtained by the terminal from the small cell to the macro cell after the deactivation command receiving unit receives the bearer deactivation command sent by the macro cell.
  • the solution introduced above is for a small cell working in a non-independent working mode, and proposes an activation and deactivation scheme of a small cell bearer in the same macro cell.
  • the terminal may be in a different macro cell.
  • the small cell bearer in the target macro cell to which the terminal is handed over is activated.
  • the embodiment of the present invention further provides a small cell. The activation scheme of the bearer.
  • the target macro cell determines a small cell for carrying the service data of the terminal, and then, based on whether the determined small cell is the current bearer terminal service data.
  • the determination of the condition of the original small cell sends a bearer activation request to the target small cell that needs to be activated, thereby implementing activation of the target small cell bearer.
  • the embodiment of the present invention provides a method for activating a small cell bearer.
  • the specific process of the method is shown in Figure 1 1a.
  • the method includes the following steps:
  • Step 11 The target macro cell receives a handover request command sent by the original macro cell.
  • the terminal may send the macro cell signal quality detection result respectively obtained by the original macro cell and the target macro cell to the original macro cell, and the original macro cell according to the macro cell signals.
  • the quality detection result and/or the cell load of the original macro cell and the like determine whether the terminal needs to handover to the target macro cell. If the determination result is yes, the original macro cell sends the handover request command to the target macro cell.
  • the terminal may also detect the signal quality of the small cell signal that can be detected by the terminal, obtain a corresponding small cell signal quality detection result, and send the small cell signal quality detection result to the handover request command and send the signal to the handover request command.
  • the target macro cell so that the target macro cell can determine, according to the small cell signal quality detection result, whether the service data of the terminal needs to be carried by the small cell.
  • Step 112 The target macro cell determines a small cell used to carry the service data of the terminal, and determines whether the determined small cell is the original small cell of the service data of the current bearer terminal, and the determined result is that the determined small cell is When the current small cell carrying the service data of the terminal is performed, step 113 is performed, and when the determined result is that the determined small cell is a target small cell different from the original small cell, step 114 is performed;
  • the target macro cell may be based on the quality of service QoS of the terminal service (Qua l i ty of
  • the service information (which can be carried in the handover request command) is combined with the small cell signal quality detection result in the handover request command to determine whether part of the service data of the terminal needs to be carried on the small cell. If the result of the determination is yes, it is further determined whether the small cell used to carry the service data of the terminal is the original small cell of the service data of the current bearer terminal.
  • the target macro cell may determine the small cell with the best signal quality according to the small cell signal quality detection result, and determine whether the small cell with the best signal quality is determined according to the macro cell to which the small cell with the best signal quality belongs.
  • the scenario shown in Figure l ib may also appear.
  • the service data of the terminal is not currently carried by any small cell.
  • such a case may be regarded as a special case covered by "the determined small cell is not the original small cell of the current bearer terminal service data".
  • the next step 114 is also required.
  • Step 113 The target macro cell sends a bearer path switching request including the destination tunnel number to the original small cell, to indicate that the original small cell switches to the tunnel between the target macro cell and the original small cell indicated by the destination tunnel number.
  • the number of services of the original small cell and the determined bearer terminal due to the current service data of the bearer terminal The small cells are the same, so the original small cell does not need to be activated at this time, and only the original small cell needs to switch the tunnel for receiving the uplink data to the tunnel between the target macro cell and the original small cell.
  • Step 114 The target macro cell sends a bearer activation request to the target small cell to activate the target small cell to establish a radio bearer.
  • the embodiment of the present invention uses a manner of sending a bearer activation request to a target small cell to establish a radio bearer for the target small cell.
  • the role of the bearer activation request is: indicating that the radio bearer of the terminal service is mapped to a layer of the target small cell, for example, to the Packet Data Convergence Protocol (PDCP) layer.
  • the bearer activation request may carry the relevant context of the terminal, such as the cell radio network temporary identifier (C-RNTI, Celet Radio Network Temporary Ident if ier) of the original macro cell, the C-RNTI of the terminal in the target macro cell, and the terminal C-RNTI of small cells and terminal capability information.
  • the related context may also carry information of an access layer configuration (such as MAC/RLC/PDCP configuration), and a radio bearer context (such as Quality of Service QoS (Quasition of Servi ce) information).
  • the activation process of the target small cell bearer may be implemented by referring to the solution introduced in FIG. 2 to FIG. 10 above, which may be specifically limited by the present invention.
  • the target macro cell when the determined small cell for carrying the service data of the terminal is the original small cell of the service data of the current bearer terminal, the target macro cell receives the original small cell and switches to the target macro cell and the original After the bearer path handover acknowledgement sent after the tunnel between the small cells, the handover confirmation message may be further sent to the original macro cell. Therefore, the target macro cell may further receive downlink data sent by the original macro cell according to the handover confirmation message, and send the downlink data to the original small cell.
  • the downlink data sent by the original macro cell is: the downlink data that is buffered by the original macro cell and sent to the terminal by the original small cell after receiving the handover confirmation message.
  • the target macro cell When the determined small cell for the service data of the bearer terminal is a target small cell different from the original small cell, the target macro cell receives the bearer activation confirmation message sent by the target small cell after establishing the radio bearer.
  • the handover confirmation message may also be further sent to the original macro cell.
  • the macro cell may further receive downlink data sent by the original macro cell according to the handover confirmation message, and send the downlink data to the original small cell.
  • the downlink data is downlink data to be sent to the terminal that is buffered by the original macro cell after receiving the handover confirmation message.
  • the target macro cell determines a small cell for carrying the service data of the terminal, and then based on whether the determined small cell is determined. For determining the condition of the original small cell carrying the service data of the terminal, transmitting a bearer activation request to the target small cell that needs to be activated, to activate the target small cell bearer, so as to target the small cell working in the non-independent working mode
  • a scheme for realizing activation of a small cell bearer under a target macro cell to which the terminal is handed over is proposed when the terminal performs handover between different macro cells.
  • the embodiment of the present invention further provides a deactivation method for a small cell bearer.
  • the specific implementation flow diagram of the method is as shown in FIG. 12a, and mainly includes the following steps: Step 121, original macro The cell sends a handover request command to the target macro cell;
  • Step 122 The original macro cell receives a handover confirmation message sent by the target macro cell according to the handover request command.
  • the handover confirmation message is sent by the target macro cell after determining the target small cell of the service data of the bearer terminal.
  • Step 123 When the determined small cell for the service data of the bearer terminal is different from the original small cell that currently carries the service data, the original macro cell sends a bearer deactivation command to the original small cell to indicate that the original small cell is according to the bearer. Deactivate the instruction to deactivate its own radio bearer.
  • the cell of the service data of the bearer terminal determined by the target macro cell may not be a small cell, but the target macro cell itself.
  • the target macro cell since there is no small cell under the target macro cell, when the terminal switches from the original macro cell to the target macro cell, the service data of the terminal is only supported by the target macro cell itself.
  • the service data carried by the target macro cell itself may be regarded as a special type covered by the "small cell for carrying the service data of the terminal is different from the original small cell currently carrying the service data". happening.
  • the original macro cell also performs a bearer deactivation command to the original small cell to instruct the original small cell to deactivate the radio bearer according to the bearer deactivation command.
  • the macro cell may stop forwarding the downlink data of the bearer service to the original small cell, and The part of the downlink data that is to be sent is buffered, so that the part of the downlink data is sent to the target macro cell, and then the part of the downlink data is sent by the target macro cell to the target small cell.
  • the process shown in FIG. 12a may further include the following steps: First, the original macro cell The downlink data that is not successfully acquired by the terminal from the original small cell is obtained; then, the original macro cell further provides the obtained downlink data to the target macro cell.
  • the original macro cell may adopt one of the following two methods to obtain downlink data that is not successfully obtained by the terminal from the original small cell.
  • the original macro cell has the function of backing up the downlink data sent to the original small cell.
  • the manner in which the original macro cell obtains the downlink data that is not successfully obtained by the terminal from the original small cell may be: a message according to the original small cell used to notify the terminal of the receiving status of the downlink data sent by the original small cell.
  • the downlink data that is not successfully obtained by the terminal from the original small cell is obtained from the downlink data backed up by the original macro cell.
  • the original small cell can send the downlink data that is not successfully obtained by the terminal from the original small cell to the original macro cell, so that the original macro cell can obtain the downlink that is not successfully obtained by the terminal from the original small cell. data.
  • the original macro cell may have the function of backing up the downlink data sent to the original small cell, or may not have the function.
  • the deactivation method of the small cell bearer controls the deactivation of the original small cell of the service data of the bearer terminal by the original macro cell that is left by the terminal, thereby A scheme for deactivating a small cell bearer in an original macro cell from which a terminal leaves is implemented when a terminal performs handover between different macro cells.
  • Example 1 4 the application scenario of the embodiment 1 is as shown in FIG. 13a, that is, the terminal moves from the small cell a (ie, the original small cell) under the macro cell A (ie, the original macro cell) to the macro cell B (ie, the target macro cell).
  • Small cell b ie target small cell.
  • FIG. 13b a specific process diagram of implementing a small cell bearer activation method and a small cell bearer deactivation method according to an embodiment of the present invention to implement handover of a terminal from a small cell a to a small cell b is shown in FIG. 13b. Including the following steps:
  • Step 131 The terminal performs signal quality measurement result reporting, where the signal quality measurement result includes signal quality measurement results of macro cell A, macro cell B, small cell a, and small cell b.
  • Step 132 The macro cell A determines to switch the terminal to the target macro cell, that is, the macro cell B according to the quality measurement result of the terminal and the load condition of the terminal.
  • Step 133 The macro cell A sends a handover request command to the macro cell B.
  • the handover request command may carry signal quality measurement results of the small cell a and the small cell b.
  • Step 134 After receiving the handover request command, the macro cell B determines whether it is necessary to carry part of the service data of the terminal on the small cell b according to the service QoS of the terminal and the signal quality measurement result of the small cell a and the small cell b. . If the result of the determination is YES, the bearer activation request is sent to the small cell b.
  • Step 135 After activating the own radio bearer, the small cell b sends a bearer activation confirmation message to the macro cell B.
  • Step 136 The macro cell B sends a handover confirmation message to the macro cell A.
  • Step 137 After receiving the handover confirmation message, the macro cell A caches the downlink data to be sent to the terminal through the small cell a.
  • Step 138 The macro cell A sends a bearer deactivation command to the small cell a to instruct the small cell a to deactivate the radio bearer according to the bearer deactivation command.
  • Step 139 The macro cell A obtains the reconfiguration information included in the handover confirmation message for instructing the terminal to perform the wireless bearer configuration, and sends the reconfiguration information to the terminal in the connection reconfiguration command.
  • the reconfiguration information is specifically used to indicate that the terminal accesses the small cell b under the macro cell B.
  • Step 1310 After receiving the bearer deactivation command, the small cell a caches the downlink data to be sent to the terminal, and sends the buffered downlink data to the macro cell A after deactivating the radio bearer.
  • Step 1311 The macro cell A sends the buffered downlink data and the small cell a to the macro cell A.
  • the downlink data is sent to the macro cell B.
  • Step 1 312 The macro cell B sends the downlink data sent by the macro cell A to the small cell b.
  • the subsequent steps of step 1 311 may include: the terminal performs connection reconfiguration according to the connection reconfiguration command, and then performs downlink synchronization and random access in the macro cell B. Since the reconfiguration information includes the configuration of the small cell b, the terminal needs to perform synchronization and random access in the small cell before the uplink and downlink data transmission can be performed.
  • Embodiment 2 The application scenario of Embodiment 2 is as shown in FIG. 14a, that is, the terminal moves from the macro cell A (ie, the original macro cell) to the macro cell B (ie, the target macro cell).
  • the small cell of the current service data of the bearer terminal is within the coverage of the macro cell A and has a connection relationship with the macro cell A; and the coverage of the macro cell B. There is a connection relationship with the macro cell B.
  • Step 141 The terminal performs signal quality measurement result reporting, where the signal quality measurement result includes macro cell A, macro cell B, and small cell. Signal quality measurement results.
  • Step 142 The macro cell A determines to switch the terminal to the target macro cell, that is, the macro cell B, according to the quality measurement result of the terminal and its own load condition.
  • Step 143 The macro cell A sends a handover request command to the macro cell B.
  • the handover request command may carry the signal quality measurement result of the small cell, the identifier of the tunnel for performing data forwarding between the macro cell A and the small cell, and the information about the radio bearer of the small cell (such as the bearer identifier and the QoS of the terminal service). Parameters) and so on.
  • Step 144 After receiving the handover request command, the macro cell B decides to use the small cell currently serving the terminal according to the QoS of the terminal service, the signal quality measurement result of the small cell, and/or the load information of the macro cell B, and the like.
  • a service is provided to establish a tunnel for data forwarding with the small cell, and a bearer path switching request is sent to the small cell.
  • the bearer path switching request includes an identifier of a tunnel for performing data forwarding between the macro cell A and the small cell, and an identifier of a tunnel for performing data forwarding between the macro cell B and the small cell.
  • Step 145 After receiving the bearer path switching request, the small cell switches from the tunnel for performing data forwarding established with the macro cell A to the tunnel for data forwarding between the macro cell B and the small cell, and then sends the macro to the macro.
  • Cell B feedback bearer path switch confirmation After receiving the bearer path switching request, the small cell switches from the tunnel for performing data forwarding established with the macro cell A to the tunnel for data forwarding between the macro cell B and the small cell, and then sends the macro to the macro.
  • Step 146 The macro cell B feeds back the handover confirmation message to the macro cell A.
  • the macro cell B can inform the macro cell A of the small cell list formed by the identity of the small cell that can continue to maintain the wireless bearer.
  • the reconfiguration information included in the handover confirmation message for instructing the terminal to perform the radio bearer configuration may further include a small cell list formed by the identifier of the small cell corresponding to the radio bearer maintained by the terminal.
  • Step 147 After receiving the handover confirmation message, the macro cell A caches the downlink data to be sent to the terminal, and does not deliver the downlink data.
  • Step 148 The macro cell A extracts the reconfiguration information in the handover confirmation message and sends the reconfiguration information to the terminal.
  • the macro cell A does not need to send a bearer deactivation command to the small cell.
  • Step 149 The macro cell A sends the buffered downlink data to the macro cell B.
  • Step 1410 The macro cell B sends the downlink data sent by the macro cell A to the small cell.
  • step 1410 can include:
  • the terminal After the terminal performs connection reconfiguration according to the reconfiguration information, downlink synchronization and random access are performed in the macro cell B. Then, the terminal and the macro cell B perform uplink and downlink data transmission.
  • the terminal continues to maintain the wireless configuration related to the small cell.
  • the service between the small cell and the terminal may be interrupted for a period of time, so that the unsent data of the original small cell/data not received by the terminal needs to be forwarded to the original macro cell first, and then the original macro The cell is forwarded to the target macro cell.
  • the original macro cell since the handover between the small cells does not occur when the terminal switches between the macro cells, the original macro cell does not need to be deactivated by the original macro cell in Embodiment 2, and the target macro cell does not need to be activated by the target macro cell.
  • the prior art does not propose how to activate the small cell bearer under the macro cell to which the terminal is handed over when the terminal switches between different macro cells.
  • the embodiment of the invention further provides an activation device carried by a small cell.
  • the device mainly includes the following functional units:
  • a small cell determining unit configured to determine a small cell used for carrying service data of the terminal after receiving the handover request command sent by the original macro cell;
  • the handover request sending unit is configured to: when the small cell determined by the small cell determining unit is the original small cell that currently carries the service data, send a bearer path switching request including the destination tunnel number to the original small cell to indicate the original small cell handover. a tunnel between the target macro cell and the original small cell indicated by the destination tunnel number;
  • the activation request sending unit is configured to: when the small cell determined by the small cell determining unit is a target small cell different from the original small cell, send a bearer activation request to the target small cell to activate the target small cell to establish the wireless bearer.
  • the device may further include a handover confirmation message sending unit, a downlink data receiving unit, and a downlink data sending unit.
  • a handover confirmation message sending unit may further include a handover confirmation message sending unit, a downlink data receiving unit, and a downlink data sending unit.
  • the main functions of these units are as follows:
  • the handover confirmation message sending unit is configured to send a handover confirmation message to the original macro cell after receiving the bearer path handover acknowledgement sent by the original small cell after the handover to the tunnel according to the bearer path handover request sent by the handover request sending unit.
  • the downlink data receiving unit is configured to receive downlink data that is sent by the original macro cell according to the handover confirmation message sent by the handover confirmation message sending unit.
  • the downlink data mentioned here is: the downlink data that the original macro cell sends to the terminal through the original small cell after receiving the handover confirmation message.
  • a downlink data sending unit configured to send downlink data received by the downlink data receiving unit to the original small cell.
  • the device may further include a handover confirmation message sending unit, a downlink data receiving unit, and a downlink data sending unit.
  • a handover confirmation message sending unit may further include a handover confirmation message sending unit, a downlink data receiving unit, and a downlink data sending unit.
  • the main functions of these units are as follows:
  • the handover confirmation message sending unit is configured to send a handover confirmation message to the original macro cell after receiving the bearer activation acknowledgement message sent by the target small cell after establishing the radio bearer.
  • the downlink data receiving unit is configured to receive downlink data that is sent by the original macro cell according to the handover confirmation message sent by the handover confirmation message sending unit.
  • the downlink data mentioned here is the downlink data to be sent to the terminal that is buffered by the original macro cell after receiving the handover confirmation message.
  • a downlink data sending unit configured to send downlink data received by the downlink data receiving unit to the target small cell.
  • the embodiment of the present invention further provides a deactivation device carried by a small cell.
  • the device mainly includes the following functional units:
  • a handover request command sending unit configured to send a handover request command to the target macro cell
  • a handover confirmation message receiving unit configured to receive a handover confirmation message sent by the target macro cell according to the handover request command sent by the handover request command sending unit, where The handover confirmation message is sent by the target macro cell after determining the target small cell carrying the service data of the terminal;
  • a bearer deactivation command sending unit configured to send a bearer deactivation command to the original small cell when the target small cell is different from the original small cell of the current bearer terminal after the handover acknowledgement message receiving unit receives the handover confirm message Instructing the original small cell to deactivate its own radio bearer according to the bearer deactivation command.
  • the device may further include a buffer unit and a sending unit.
  • the buffering unit is configured to buffer the downlink data to be sent to the terminal after the handover confirmation message receiving unit receives the handover confirmation message
  • the sending unit is configured to send the downlink data buffered by the buffering unit to the target macro cell.
  • the device may further include an obtaining unit and a providing unit.
  • the obtaining unit is configured to obtain downlink data that is not successfully acquired by the terminal from the original small cell
  • the providing unit is configured to provide downlink data obtained by the obtaining unit to the target macro cell.
  • the obtaining unit is specifically configured to: receive downlink data that is sent by the original small cell and is not successfully obtained by the terminal from the original small cell.
  • the device may further include a backup unit for backing up downlink data sent to the original small cell.
  • the obtaining unit may be specifically configured to: use the downlink data that is backed up by the original macro cell according to the message sent by the original small cell to notify the terminal of the receiving status of the downlink data sent by the original small cell.
  • the downlink data that is not successfully obtained by the terminal from the original small cell is obtained.
  • a user plane protocol stack that may be adopted by the macro base station, the small cell, and the terminal UE is as shown in FIG. 15a.
  • the terminal used to implement the solution provided by the embodiment of the present invention has at least two sets of PDCP/RLC/MAC/PHY entities.
  • the number of entities depends on the total number of connected macro cells and small cells, and each set of PDCP/RLC/MAC/PHY corresponds to one macro cell/small cell.
  • the terminal has the capability of connecting to multiple base stations at the same time, and can configure multiple sets of PDCP/RLC/MAC/PHY entities according to the RRC message sent by the base station.
  • the PDCP of the macro base station and the PDCP of the small cell have the capability of performing bearer mapping and related PDCP layer parameter interaction through the X2 interface.
  • the terminal for implementing the solution provided by the embodiment of the present invention has at least two sets of RLC/MAC/PHY entities, and the number of entities depends on the total number of connected macro cells and small cells, each set.
  • the RLC/MAC/PHY corresponds to one macro cell/small cell.
  • the terminal has the capability of connecting to multiple base stations at the same time, and can configure multiple RLC/MAC/PHY entities according to the RRC message sent by the base station.
  • the PDCP of the terminal has the capability of data interaction with multiple RLC entities.
  • the PDCP of the macro base station and the PDCP of the small cell have the capability of performing bearer mapping and related PDCP layer parameters interaction through the X2 interface.
  • a control plane protocol stack that may be adopted by the macro base station, the small cell, and the terminal UE is as shown in FIG. 15c.
  • the control plane protocol stack shown in Fig. 15c has not changed itself compared to the existing protocol stack.
  • the RRC layer of the macro base station further has the capability of performing PDCP/RLC/MAC/PHY configuration parameter interaction with the small cell base station RRC, and the macro base station RRC also has the capability of configuring multiple sets of PDCP/RLC/MAC/PHY of the terminal (through RRC).
  • the RRC layer of the small cell does not need to perform RRC message interaction with the terminal, but can broadcast the system message, and the PDCP of the small cell itself, in addition to the capability of the macro base station to perform the PDCP/RLC/MAC/PHY configuration parameter interaction. /RLC/MAC/PHY is configured.

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Abstract

本发明公开一种小小区承载的激活方法及设备，通过基于小小区的非独立工作模式的特点，由宏小区向小小区发送承载激活请求的方式，来控制小小区与终端之间建立无线承载，实现对工作在非独立工作模式下的小小区承载的激活。此外，本发明还公开一种小小区承载的激活方法及设备，在终端要从原宏小区切换到目标宏小区时，由目标宏小区确定承载终端业务数据的小小区，并基于对确定出的小小区是否为当前承载终端业务数据的原小小区这一条件的判定，向需要被激活的目标小小区发送承载激活请求，以激活该目标小小区承载。从而针对工作在非独立工作模式下的小小区，在终端在不同的宏小区间切换时实现对终端切换到的目标宏小区下的小小区承载进行激活的方案。

Description

小小区承载的激活与去激活方法及设备 本申请要求于 2013 年 03 月 12 日提交中国专利局、 申请号为 201310077875. 7 , 发明名称为 "小小区承载的激活与去激活方法及设备" 的中国专利申请， 以及于 2013年 03 月 12 日提交中国专利局、 申请号为 201310078263. X , 发明名称为 "小小区承载激活与去激活的方法及设备" 的中国专利申请的优先权， 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及通信技术领域，尤其涉及一种小小区承载的激活与去激活方法 及设备。 背景技术
一些统计结果表明目前移动运营商移动语音业务的 60 %和数据业务的 70 %发生在室内。 据预测， 未来数据业务预计 10年增长 1000倍， 而其中室内数 据业务量将占总业务量的 90%。 因此， 传统蜂窝网络的覆盖方式对于支持室内 和热点无线数据业务发展的瓶颈日益突出，移动运营商的网络发展面临下述种 种挑战：
( 1 )传统 2G、 3G网络无线接入容量极限逐渐显现；
( 2 )站址、天馈资源获取难度日益增加，密集城区的站间距接近理论极限， 很难支持传统蜂窝宏基站密集部署；
( 3 )宏基站的部署和运营成本高昂，新增宏基站扩容的建网方式难以为继。 为了维持产业链的健康和可持续发展，移动通信网络的发展必须考虑如何 通过网络技术能力的提升、部署方式和运营方式等方面的革新来不断降低网络 的建网、 部署和运营成本。
目前针对热点及室内数据业务发展的解决方案有两类： WiF i与 LTE Sma l l
Cel l。 目前业界 |巴标准中定义的 Pico基站和家庭基站统称为小小区 （Sma l l Ce l l )。 由于小小区的部署支持干扰管理、 节点自启动、 且与蜂窝网络共享核 心网和网管系统，使得其部署和管理相对简便， 已经成为解决未来室内和热点 数据业务覆盖与容量的主流方向。 在 3GPP R12中， 小小区有可能工作在独立工作模式情况下， 也有可能工 作在需要与宏基站进行相互协作的非独立工作模式下。其中， 非独立工作模式 是指对于某些终端 （如高速移动的终端）， 其接入锚点始终为宏基站， 而小小 区仅提供传输数据的通道， 此时所有控制面信令均通过宏基站下发； 独立工作 模式是指终端不需要依赖任何宏基站帮助即可接入小小区中。如图 1所示小小 区 A就是工作在非独立工作模式下，相应的控制面信令由图 1中的宏基站下发； 而小小区 B则是工作在独立模式下，终端 2不需要依赖宏基站的帮助即可接入 小小区 B。
现有技术中虽然提供了小小区的上述两种工作模式， 然而，针对非独立工 作模式， 却并未提出如何在该模式下实现对小小区承载的激活。 发明内容
一方面， 本发明实施例提供一种小小区承载的激活与去激活方法及设备， 用以实现对工作在非独立工作模式下的小小区承载的激活以及去激活。
本发明实施例采用以下技术方案：
一种小小区承载的激活方法，包括：宏小区向小小区发送承载激活请求后， 緩存待通过小小区建立的无线承载进行发送的下行数据；接收承载激活确认消 息， 其中， 所述承载激活确认消息是根据所述承载激活请求而建立起无线承载 的小小区发送的；并将緩存的所述下行数据发送给所述建立起无线承载的小小 区。
一种小小区承载的激活方法， 包括： 小小区接收宏小区发送的承载激活请 求； 并在根据所述承载激活请求建立起无线承载后， 向宏小区发送承载激活确 认消息； 小小区接收宏小区发送的待发送给终端的下行数据； 以及通过小小区 建立的无线承载， 将所述下行数据发送给所述终端。
一种小小区承载的去激活方法， 包括： 宏小区向小小区发送承载去激活指 令， 以指示所述小小区根据所述承载去激活指令而去激活自身无线承载； 并获 得未被终端从所述小小区处成功获取的下行数据；以及将所述下行数据提供给 所述终端。 一种小小区承载的去激活方法， 包括： 小小区接收宏小区发送的承载去激 活指令； 根据所述承载去激活指令， 执行去激活所述小小区无线承载的操作。 其中， 所述小小区接收所述承载去激活指令后， 所述方法还包括： 所述小小区 向宏小区发送用于通知终端对于所述小小区发送的下行数据的接收状态的消 息； 或所述小小区接收所述承载去激活指令后， 所述方法还包括： 所述小小区 向宏小区发送未被终端从所述小小区处成功获取的下行数据。
一种小小区承载的激活设备， 包括： 激活请求发送单元， 用于向小小区发 送承载激活请求； 緩存单元， 用于在激活请求发送单元发送承载激活请求后， 緩存待通过小小区建立的无线承载进行发送的下行数据； 确认消息接收单元， 用于接收承载激活确认消息； 其中， 所述承载激活确认消息是根据激活请求发 送单元发送的承载激活请求而建立起无线承载的小小区发送的；緩存数据发送 单元，用于将緩存单元緩存的所述下行数据发送给所述建立起无线承载的小小 区。
一种小小区承载的激活设备， 包括： 激活请求接收单元， 用于接收宏小区 发送的承载激活请求； 确认消息发送单元， 用于在根据激活请求接收单元接收 的所述承载激活请求建立起无线承载后， 向宏小区发送承载激活确认消息； 下 行数据接收单元， 用于接收宏小区发送的待发送给终端的下行数据； 下行数据 发送单元， 用于通过小小区建立的无线承载，将下行数据接收单元接收的所述 下行数据发送给所述终端。
一种小小区承载的去激活设备， 包括： 去激活指令发送单元， 用于向小小 区发送承载去激活指令，以指示所述小小区根据所述承载去激活指令而去激活 自身无线承载； 下行数据获得单元， 用于获得未被终端从所述小小区处成功获 取的下行数据； 下行数据提供单元， 用于将下行数据获得单元获得的所述下行 数据提供给所述终端。
一种小小区承载的去激活设备， 包括： 去激活指令接收单元， 用于接收宏 小区发送的承载去激活指令； 去激活执行单元， 用于根据去激活指令接收单元 接收的所述承载去激活指令， 执行去激活所述小小区无线承载的操作； 其中， 所述设备还包括： 消息发送单元， 用于在去激活指令接收单元收宏小区发送的 承载去激活指令后，向宏小区发送用于通知终端对于所述小小区发送的下行数 据的接收状态的消息； 或所述设备还包括： 下行数据发送单元， 用于在去激活 指令接收单元收宏小区发送的承载去激活指令后，向宏小区发送未被终端从所 述小小区处成功获取的下行数据。
上述方案基于小小区的非独立工作模式的特点，提出了通过由宏小区向小 小区发送承载激活请求的方式， 来控制小小区与终端之间建立无线承载，从而 实现了对工作在非独立工作模式下的小小区承载的激活。
另一方面， 本发明实施例还针对工作在非独立工作模式下的小小区，提供 一种终端在不同的宏小区之间进行切换时的小小区承载的激活与去激活方法 及设备，用以实现对终端切换到的目标宏小区下的小小区承载进行激活以及去 激活的方案。
本发明实施例采用以下技术方案：
一种小小区承载的激活方法， 包括： 目标宏小区接收到原宏小区发送的切 换请求命令后，确定用于承载终端的业务数据的小小区； 当确定出的所述小小 区为当前承载所述业务数据的原小小区时，向所述原小小区发送包含目的隧道 号的承载路径切换请求，以指示所述原小小区切换到所述目的隧道号所表示的 位于目标宏小区与原小小区之间的隧道；当确定出的所述小小区为不同于所述 原小小区的目标小小区时， 向所述目标小小区发送承载激活请求， 以激活所述 目标小小区建立无线承载。
一种小小区承载的去激活方法， 包括： 原宏小区向目标宏小区发送切换请 求命令；接收目标宏小区根据所述切换请求命令而发送的切换确认消息；其中， 所述切换确认消息是目标宏小区在确定出承载终端的业务数据的目标小小区 后发送的；在确定出的所述目标小小区不同于当前承载所述业务数据的原小小 区时，原宏小区向所述原小小区发送承载去激活指令， 以指示所述原小小区根 据所述承载去激活指令而去激活自身无线承载。
一种小小区承载的激活设备， 包括： 小小区确定单元， 用于在接收到原宏 小区发送的切换请求命令后，确定用于承载终端的业务数据的小小区； 切换请 求发送单元，用于当小小区确定单元确定出的所述小小区为当前承载所述业务 数据的原小小区时， 向所述原小小区发送包含目的隧道号的承载路径切换请 求，以指示所述原小小区切换到所述目的隧道号所表示的位于目标宏小区与原 小小区之间的隧道； 激活请求发送单元， 用于当小小区确定单元确定出的所述 小小区为不同于所述原小小区的目标小小区时，向所述目标小小区发送承载激 活请求， 以激活所述目标小小区建立无线承载。
一种小小区承载的去激活设备， 包括： 切换请求命令发送单元， 用于向目 标宏小区发送切换请求命令； 切换确认消息接收单元， 用于接收目标宏小区根 据切换请求命令发送单元发送的切换请求命令而发送的切换确认消息； 其中， 所述切换确认消息是目标宏小区在确定出承载终端的业务数据的目标小小区 后发送的； 承载去激活指令发送单元， 用于在切换确认消息接收单元接收到所 述切换确认消息后，当所述目标小小区不同于当前承载所述业务数据的原小小 区时， 向所述原小小区发送承载去激活指令， 以指示所述原小小区根据所述承 载去激活指令而去激活自身无线承载。
上述方案中，在终端将要从原宏小区切换到目标宏小区时， 由目标宏小区 来确定用于承载终端的业务数据的小小区，然后基于对确定出的小小区是否为 当前承载终端的业务数据的原小小区这一条件的判定，向需要被激活的目标小 小区发送承载激活请求， 以激活该目标小小区承载。从而针对工作在非独立工 作模式下的小小区，本方案提出一种当终端在不同的宏小区之间进行切换时实 现对终端切换到的目标宏小区下的小小区承载进行激活的方案。 附图说明
附图用来提供对本发明的进一步理解， 并且构成说明书的一部分， 与 本发明实施例一起用于解释本发明， 并不构成对本发明的限制。 在附图中： 图 1为工作在非独立工作模式和独立工作模式下的小小区的示意图； 图 2 为本发明实施例宏小区侧的小小区承载的激活方法的具体流程示意 图；
图 3 为本发明实施例小小区侧的小小区承载的激活方法的具体流程示意 图； 图 4 为本发明实施例宏小区侧的小小区承载的去激活方法的具体流程示 意图；
图 5 为本发明实施例小小区侧的小小区承载的去激活方法的具体流程示 意图；
图 6a为实施例 1的实施场景示意图；
图 6b为实施例 1的具体实施流程图；
图 7为实施例 2的具体实施流程图；
图 8为实施例 3、 4、 5的实施场景示意图；
图 9为实施例 4的具体实施流程图；
图 10为实施例 5的具体实施流程图；
图 11为本发明实施例目标宏小区侧的小小区承载的激活方法的具体流程 示意图；
图 l ib为终端的业务数据当前并没有由任何小小区承载的场景示意图； 图 12a 为本发明实施例原宏小区侧的小小区承载的去激活方法的具体流 程示意图；
图 12b为目标宏小区确定出的承载终端的业务数据的小区不为小小区，而 是该目标宏小区自身的场景示意图；
图 13a 为终端从原宏小区下的小小区移动到目标宏小区下的另一个小小 区的应用场景示意图；
图 13b为图 13a所示应用场景下的具体实现流程示意图；
图 14a为终端从原宏小区移动到目标宏小区的应用场景示意图； 图 14b为图 14a所示应用场景下的具体实现流程示意图；
图 15a为本发明实施例中的宏基站、 小小区和终端 UE可能采用的一种用 户面协议栈示意图；
图 15b为本发明实施例中的宏基站、小小区和终端 UE可能采用的另一种 用户面协议栈示意图；
图 15c为本发明实施例中的宏基站、 小小区和终端 UE可能采用的一种控 制面协议栈示意图。 具体实施方式
为使本发明实施例要解决的技术问题、技术方案和优点更加清楚， 下面将 结合附图及具体实施例进行详细描述。
为了实现对工作在非独立工作模式下的小小区承载的激活，本发明实施例 提供了一种小小区承载的激活方案。该方案基于小小区的非独立工作模式的特 点，提出了通过由宏小区向小小区发送承载激活请求的方式， 来控制小小区与 终端之间建立无线承载。
以下结合说明书附图对本发明的实施例进行说明，应当理解， 此处所描述 的实施例仅用于说明和解释本发明， 并不用于限制本发明。 并且在不冲突的情 况下， 本说明中的实施例及实施例中的特征可以互相结合。
首先， 本发明实施例提供一种宏小区侧的小小区承载的激活方法， 该方法 主要包括如图 2所示的下述步骤：
步骤 21 , 宏小区向小小区发送承载激活请求；
该承载激活请求的作用在于：指示将终端业务的无线承载映射到小小区的 某一层上， 如映射到分组数据汇聚协议 ( PDCP , Packet Data Convergence Protocol )层上。 该承载激活请求中可以携带终端的相关上下文， 如终端在宏 小区的小区无线网络临时标识 ( C-RNTI , Cel l Radio Network Temporary Ident if ier ), 终端在小小区的 C-RNTI以及终端能力信息等。 此外， 该相关上 下文中还可以携带接入层配置（如 MAC/RLC/PDCP的配置）信息， 以及无线承 载上下文（如服务质量 QoS ( Qua l i ty of Service )信息）等。
在实际应用中，宏小区在向小小区发送承载激活请求前，接入该宏小区的 终端可能会处于两种状态。其一是处于未接入任何小小区的状态； 其二是处于 已接入了某小小区的状态。 为了便于后文描述， 本发明实施例中将终端当前已 接入的小小区简称为 "原小小区"。
针对上述两种状态， 步骤 21的具体执行方式上可以有所不同。
具体地，针对终端当前未接入任何小小区的情况，宏小区可以根据终端业 务的 QoS、 终端所处位置处的小小区信号质量和 /或宏小区与小小区的负载信 息等， 判断终端的业务是否可以通过小小区来承载。 若判断结果为是， 宏小区 就可以向与自身具备连接关系的小小区发送上述承载激活请求。 比如，宏小区 可以向与自身具备连接关系的某一个小小区或多个小小区发送该请求；也可以 仅向与自身具备连接关系、且负载不大于预设负载阈值的一个小小区发送该请 求； 等等。
而针对终端当前已接入原小小区的情况， 宏小区则可以根据终端业务的
QoS 和 /或终端所处位置处的小小区信号质量等， 判断终端的业务是否可以通 过除原小区外的其他小小区来承载，即判断是否要将原小小区的业务转移至与 宏小区相连接的其他小小区。若判断结果为是，宏小区就可以向与自身具备连 接关系的除原小区外的其他小小区发送上述承载激活请求。 同时，宏小区还可 以向原小区发送承载去激活指令。该承载去激活指令用于指示原小小区对其无 线承载执行去激活。原小区根据该承载去激活指令执行无线承载去激活的具体 实现过程将在后文中具体介绍， 在此不再贅述。
值得说明的是，宏小区向原小小区发送承载去激活指令后，还可以进一步 获得未被终端从原小小区处成功获取的下行数据。其中， 下行数据可以但不限 于通过下述两种方式来获得：
第一种方式：该方式要求宏小区具备对发送给原小小区的下行数据进行备 份的功能，以及要求原小小区具备向宏小区发送用于通知终端对于原小小区发 送的下行数据的接收状态的消息的功能。基于该些功能，宏小区就可以根据原 小小区所发送的上述消息，从宏小区所备份的下行数据中， 获得未被终端从原 小小区处成功获取的下行数据。
第二种方式：该方式可以不要求宏小区具备对发送给原小小区的下行数据 进行备份的功能，但要求原小区具备向宏小区发送未被终端从原小小区处成功 获取的下行数据的功能。基于该功能，宏小区就可以将原小小区发送来的未被 终端从原小小区处成功获取的下行数据，作为宏小区获得的未被终端从原小小 区处成功获取的下行数据。
步骤 22 , 宏小区接收承载激活确认消息；
其中，该承载激活确认消息是根据承载激活请求而建立起无线承载的小小 区发送的。
需要说明的是，针对终端当前已接入原小小区的情况，宏小区也可以是在 接收到该承载激活确认消息后，再向原小小区发送承载去激活指令。相比于先 向原小小区发送承载去激活指令，然后再向除原小区外的其他小小区发送承载 激活请求的方式相比，在接收到该承载激活确认消息后再向原小小区发送承载 去激活指令的方式可以避免若所述其他小小区的无线承载建立失败，则会导致 终端需要等待较长时间才能重新接入小小区以获得下行数据，从而会影响用户 使用体验的问题。
步骤 23 , 宏小区緩存待通过发送激活确认消息的小小区所建立的无线承 载进行发送的下行数据；
可选的，宏小区可以是在向小小区发送承载激活请求后， 立即执行緩存上 述下行数据（即， 待通过无线承载发送给终端的下行数据） 的操作。
对上述下行数据进行緩存的原因是，当前还不能肯定终端与发送激活确认 消息的小小区之间是否已建立无线承载，因此不能肯定下行数据一定能发送成 功。 即， 执行步骤 23是为了避免终端与发送激活确认消息的小小区之间当前 可能还未建立无线承载而会导致下行数据发送失败的问题。
需要说明的是， 针对终端已接入原小小区的情况， 步骤 23中所述的该下 行数据可以包括： 通过原小小区与终端之间的无线承载进行发送的下行数据。
步骤 24 , 宏小区将自身緩存的下行数据发送给该小小区。
比如，在终端与发送激活确认消息的小小区之间建立无线承载后， 该小小 区可以向宏小区发送用于通知终端与其已建立无线承载的消息。宏小区在接收 到该消息后， 就可以将自身緩存的下行数据发送给该小小区。
本发明实施例中，宏小区还可以对其发送的上述下行数据进行备份， 并在 接收到通知该下行数据被终端成功接收的消息后，再删除备份的下行数据。这 样的处理方式可以实现在该下行数据未被终端成功接收时，还可以由宏小区执 行该下行数据的重发， 从而避免该下行数据发送失败而丟失的问题。
本发明实施例提供的上述方法基于小小区的非独立工作模式的特点，提出 了通过由宏小区向小小区发送承载激活请求的方式，来控制小小区与终端之间 建立无线承载， 从而实现了对工作在非独立工作模式下的小小区承载的激活。 出于与图 2所示的小小区承载的激活方法的同一发明构思，针对小小区这 一侧所执行的操作， 本发明实施例还提供另一种小小区承载的激活方法， 该方 法主要包括如图 3所示的下述步骤：
步骤 31 , 小小区接收宏小区发送的承载激活请求；
步骤 32 , 小小区在根据该承载激活请求建立起无线承载后， 向宏小区发 送承载激活确认消息；
步骤 33 , 小小区接收宏小区发送的待发送给终端的下行数据；
步骤 34 , 小小区通过自身与终端之间建立的无线承载， 将宏小区发送来 的下行数据发送给终端。
出于与图 2所示的小小区承载的激活方法的同一发明构思，本发明实施例 还提供一种宏小区侧的小小区承载的去激活方法，该方法主要包括如图 4所示 的下述步骤：
步骤 41 , 宏小区向小小区发送承载去激活指令， 以指示所述小小区根据 所述承载去激活指令而去激活自身无线承载；
在实际应用中，宏小区收到核心网的承载删除命令、 小小区负载过重或小 小区信号质量变差等原因，都可能触发宏小区去激活小小区承载。在需要去激 活小小区承载时，宏小区就可以向小小区发送承载去激活指令。如果此时小小 区的承载业务没有结束，则宏小区可以停止将该承载业务的下行数据转发至小 小区， 并对被停止发送的这部分下行数据进行緩存， 以便后续基于宏小区与终 端之间的无线承载， 或者基于终端与其他小小区之间的无线承载，将该部分下 行数据发送给终端。
步骤 42 , 宏小区向与上述小小区之间建立起无线承载的终端发送无线承 载重配置消息， 以指示终端去激活该终端与该小小区之间建立的无线承载； 本发明实施例中，宏小区向小小区发送承载去激活指令的同时或之后，还 可以通过发送信令的方式，指示终端进行重配置，从而去激活终端与上述承载 去激活指令的接收方小小区之间的无线承载。如果该无线承载的去激活不是由 于网络的承载删除引起，则宏小区可以指示终端将终端与小小区之间的无线承 载映射到终端与宏小区之间的无线承载上。从而宏小区可以在发送给终端的无 线承载重配置消息里，携带用于实现将终端与上述小小区之间的无线承载映射 到终端与宏小区之间的无线承载相关的配置信息。 步骤 43 , 宏小区获得未被终端从小小区处成功获取的下行数据； 需要说明的是， 当宏小区被配置为会对发送给小小区的下行数据进行备 份，且小小区承载未被去激活时， 小小区会将终端对于下行数据的接收情况的 信息反馈给宏小区，以指示宏小区从其备份的下行数据中删除已被终端成功接 收的下行数据；或对未被终端成功接收的下行数据进行重发。基于这样的场景， 宏小区可以在小小区承载被去激活后， 直接从自身备份的下行数据中，确定出 未被终端成功接收的下行数据。
而当宏小区被配置为不会对发送给小小区的下行数据进行备份时，则在小 小区承载被去激活后，宏小区需要进一步接收： 由承载被去激活的该小小区緩 存并发送给该宏小区的未被终端成功接收的下行数据。
步骤 44 , 宏小区将获得的下行数据提供给终端。
出于与图 4所示的小小区承载的去激活方法的同一发明构思，针对小小区 这一侧所执行的操作， 本发明实施例还提供另一种小小区承载的去激活方法， 该方法主要包括如图 5所示的下述步骤：
步骤 51 , 小小区接收宏小区发送的承载去激活指令；
步骤 52 , 小小区根据承载去激活指令， 执行去激活小小区无线承载的操 作。
可选的， 在执行上述步骤 51后， 还可以进一步执行下述步骤： 小小区向 宏小区发送用于通知终端对于小小区发送的下行数据的接收状态的消息。
或者可选的， 在执行上述步骤 51后， 还可以进一步执行下述步骤： 小小 区向宏小区发送未被终端从小小区处成功获取的下行数据。
上文主要是对本发明实施例提供的小小区承载的激活 /去激活方法的总体 的应用过程。
实施例 1
实施例 1的实施场景示意图如图 6a所示。图 6a中所示的宏小区中存在宏 基站（Macro eNB ),该宏基站具备至少一个与其相连接的小小区基站（即 sma l l ce l l eNB , 如 P i co基站或家庭基站）。 此外， 图 6a中还包括处于宏小区中且 当前未接入任意小小区的终端（UE )。 针对该终端， 可采用如图 6b所示的步骤 实现对小小区的激活：
步骤 61 : 对于在宏小区处于连接态的终端， 当有上行 /下行业务时， 如果 宏基站判断该业务需要通过小小区来承载 （判断依据可以是当前业务的 QoS、 小小区信号质量、 宏小区与小小区负载情况等）， 则宏小区 （即宏基站） 向小 小区（即向小小区的基站）发送承载激活请求， 以实现将该业务的无线承载映 射到小小区的某一层上（具体地， 可以映射在 PDCP层）。
该请求消息可以携带终端的相关上下文（如终端在宏小区的 C-RNTI、 终 端在小小区的 C-RNTI、 终端能力信息等）、接入层配置信息（如 MAC/RLC/PDCP 的配置）、 无线承载上下文（如 QoS信息）。
步骤 62 : 小小区接收承载激活请求， 建立相应无线承载， 若成功建立， 向宏小区反馈承载激活确认。
步骤 63 : 宏小区收到承载激活确认后， 緩存随后到来的该承载的下行数 据 (不再通过宏基站空口发给终端）。
步骤 64 : 并通过信令配置终端建立与小小区的无线承载。
步骤 65 : 终端根据宏小区的重配置消息进行配置， 如将位于宏小区的一 些承载建立到小小区的无线承载上。
步骤 66 : 完成配置后， 终端向基站反馈重配置完成消息。 宏小区收到重 配置完成消息后， 可以开始将承载的緩存数据及随后到来数据转发至小小区。
其中， 宏小区在转发数据到小小区时， 有两种处理方式：
1、 宏小区保留数据备份， 当小小区接收到终端对下行数据的反馈后， 向 宏小区反馈数据的接收状况。宏基站对于已按序接收的数据，再删除该数据备 份。
2、 宏小区不保留数据备份， 小小区也无需向宏小区反馈下行数据是否正 确发送的状态。
步骤 67 : 终端在小小区取得下行同步并随机接入后即可发送上下行数据。 实施例 2
实施例 2具体包括如图 7所示的下述步骤，通过执行该些步骤， 可实现对 小小区的去激活：
步骤 71 : 宏小区由于收到核心网的承载删除命令， 或由于小小区负载及 信号质量等原因，宏小区需要去激活小小区上的承载， 则宏小区发送承载去激 活命令给小小区（如果该承载业务没有结束，宏基站需停止将该承载的下行数 据转发至小小区， 并緩存随后到来的下行数据）。
同时，宏小区通过信令重配置终端去激活小小区承载（如果该承载去激活 不是由于网络的承载删除引起，则宏小区需要将小小区上的承载建立在宏小区 上， 则在重配置消息里包括对该承载在宏小区的相关配置）。
步骤 72 : 小小区收到去激活命令后， 如果宏小区采用前文所述的转发数 据到小小区时的第 1种处理方式， 则小小区直接去激活承载即可； 而如果宏小 区采用前文所述的转发数据到小小区时的第 2种处理方式，则将緩存在小小区 的未收到正确接收反馈的包转发给宏小区进行緩存， 然后去激活承载。
步骤 73: 宏小区向终端发送配置消息；
步骤 74 : 终端收到宏小区的配置消息后， 根据配置删除小小区的承载及 在宏基站建立被删除的该承载；
步骤 75 : 终端发送重配置完成消息给宏小区。
步骤 76 : 终端在宏小区上进行该承载的上下行数据收发。
步骤 77 : 宏小区收到终端发送的重配置完成消息后， 如果原本由小小区 承载的承载业务没有结束，则可以将针对该承载业务所緩存的数据及随后数据 通过宏小区的空口发给终端。
实施例 3
实施例 3、 实施例 4以及实施例 5均为特定场景下的小小区激活与去激活 流程。 具体地， 该特定场景的示意图如图 8所示： 小小区 a和小小区 b均位于 宏基站 A的信号覆盖范围内；终端 UE移出小小区 a ,然后进入另一个小小区 b。 其中， 小小区 a中的基站为原 sma l l cel l eNB, 而小小区 b中的基站为目标 sma l l cel l e氣
在这样的场景下，实施例 3中实现对小小区 a的去激活以及实现对小小区 b的激活的具体过程可以参照上述实施例 1和实施例 2。 简单来说就是： 首先 按照如实施例 2所述的流程去激活小小区 a , 然后再按照实施例 1所述的流程 激活小小区 b , 从而实现将小小区 a对于终端的业务数据的承载映射到小小区 b的承载上。 实施例 4
实施例 4中实现对小小区 a的去激活以及实现对小小区 b的激活的具体过 程如图 9所示， 主要包括下述步骤：
步骤 91: 宏小区判断出需要将小小区 a的业务移至该宏小区下的另一个 小小区 b后， 向原 small cell eNB发送承载去激活指令， 并停止将该承载的 下行数据转发至原 small cell eNB, 并緩存随后到来的下行数据。
宏小区判断是否需要将小小区 a的业务移至小小区 b的判读依据可以是小 区负载情况及信号质量。
步骤 92: 宏小区向目标 small cell eNB发送承载激活请求。
步骤 93: 原 small cell eNB执行去激活， 并将自身緩存的未确认终端已 收到的下行数据转发到宏基站。
步骤 94: 宏基站对原 small cell eNB发送的下行数据进行緩存。
步骤 95: 目标 small cell eNB在根据承载激活请求激活自身无线承载后， 向宏基站反馈承载激活确认。
步骤 96: 宏基站收到目标 small cell eNB的承载激活确认后， 向终端发 送重配置命令， 将原 small cell eNB的 载转移至目标 smal 1 cell eNB。
步骤 97: 终端根据宏小区的重配置消息进行配置， 完成配置后， 终端向 宏基站反馈重配置完成消息。 之后， 终端在目标 small cell eNB取得下行同 步并随机接入后即可发送上下行数据。
步骤 98: 宏小区收到重配置完成消息后， 可以开始将承载的緩存数据及 随后到来数据转发至目标 small cell eNB。
实施例 5
实施例 5中实现对小小区 a的去激活以及实现对小小区 b的激活的具体过 程如图 10所示， 主要包括下述步骤：
步骤 101: 宏小区判断出需要将小小区 a的业务移至该宏小区下的另一个 小小区 b后， 向目标 small cell eNB发送承载激活请求。
步骤 102: 目标 small cell eNB向宏小区反馈承载激活确认， 以通知宏 小区小小区 b已成功激活无线承载。
步骤 103:宏小区收到目标 small cell eNB的承载激活确认后，向原 small cell eNB发送承载去激活指令， 并停止将该承载的下行数据转发至原小小区， 緩存随后到来的下行数据。
步骤 104: 原 small cell eNB收到承载去激活指令后执行自身的无线承 载去激活， 并将已发送给终端、但未确定终端成功接收的下行数据转发到宏小 区。
步骤 105: 宏小区緩存原 small cell eNB发送的下行数据。
步骤 106:宏小区向终端发送重配置命令，以指示终端将原 small cell eNB 的 载转移至目标 small cell eNB。
步骤 107: 终端根据宏小区的重配置消息进行配置， 完成配置后， 终端向 基站反馈重配置完成消息。 之后， 终端在目标 small cell eNB取得下行同步 并随机接入后即可发送上下行数据。
步骤 108: 宏小区收到重配置完成消息后， 开始将承载的緩存数据及随后 到来数据转发至目标 small cell eNB。 之后， 终端与目标 small cell eNB之 间进行上下行数据的发送。 为了实现对工作在非独立工作模式下的小小区承载的激活，本发明实施例 还提供一种小小区承载的激活设备。 该设备主要包括下述单元：
激活请求发送单元， 用于向小小区发送承载激活请求；
緩存单元， 用于在激活请求发送单元发送承载激活请求后，緩存待通过小 小区建立的无线承载进行发送的下行数据；
确认消息接收单元， 用于接收承载激活确认消息； 其中， 该承载激活确认 消息是根据激活请求发送单元发送的承载激活请求而建立起无线承载的小小 区发送的；
緩存数据发送单元，用于将緩存单元緩存的下行数据发送给建立起无线承 载的小小区。
可选的， 若激活请求发送单元向小小区发送承载激活请求前， 终端已与原 小小区之间建立无线承载； 则激活请求发送单元可以进一步划分为：
判断模块，用于判断是否要将原小小区的业务转移至与宏小区相连接的其 他小小区； 发送模块， 用于在判断单元得到的判断结果为是时， 向其他小小区发送承 载激活请求。
而若激活请求发送单元向小小区发送承载激活请求前，终端未与任何小小 区建立无线承载； 则激活请求发送单元可以划分为：
判断模块， 用于判断终端的业务是否可以由小小区承载；
发送模块， 用于在判断模块得到的判断结果为是时， 向与该设备相连接的 小小区发送承载激活请求。
可选的， 本发明实施例提供的上述设备还可以进一步包括：
去激活指令发送单元，用于在激活请求发送单元向小小区发送承载激活请 求的同时， 向原小小区发送承载去激活指令， 其中， 该指令用于指示原小小区 对其无线承载执行去激活；
获得单元， 用于在去激活指令发送单元发送承载去激活指令后， 获得未被 终端从所述原小小区处成功获取的下行数据；
下行数据发送单元， 用于在确认消息接收单元接收到承载激活确认消息 后， 将获得单元获得的下行数据发送给建立起无线承载的小小区。
或者， 该设备还可以进一步包括：
去激活指令发送单元，用于在确认消息接收单元接收到承载激活确认消息 后， 向原小小区发送承载去激活指令； 其中， 该指令用于指示原小小区对其无 线承载执行去激活；
获得单元， 用于在去激活指令发送单元发送承载去激活指令后， 获得未被 终端从原小小区处成功获取的下行数据；
下行数据发送单元， 用于在确认消息接收单元接收到承载激活确认消息 后， 将获得单元获得的下行数据发送给建立起无线承载的小小区。
可选的，若上述设备还包括用于备份发送给原小小区的下行数据的备份单 元， 那么上述获得单元具体可以用于： 在去激活指令发送单元发送承载去激活 指令后，根据原小小区所发送的用于通知终端对于所述原小小区发送的下行数 据的接收状态的消息，从备份单元所备份的下行数据中获得未被终端从原小小 区处成功获取的下行数据。
而若上述设备不包括上述备份单元， 那么获得单元具体可以用于： 在去激 活指令发送单元发送承载去激活指令后，接收原小小区发送来的未被终端从原 小小区处成功获取的下行数据。
出于与上述激活设备相同的发明构思，本发明实施例还提供一种小小区承 载的激活设备， 该设备包括：
激活请求接收单元， 用于接收宏小区发送的承载激活请求；
确认消息发送单元，用于在根据激活请求接收单元接收的承载激活请求建 立起无线承载后， 向宏小区发送承载激活确认消息；
下行数据接收单元， 用于接收宏小区发送的待发送给终端的下行数据； 下行数据发送单元， 用于通过小小区建立的无线承载，将下行数据接收单 元接收的下行数据发送给终端。
处于与上述激活设备相同的发明构思，本发明实施例还提供一种小小区承 载的去激活设备， 该设备包括：
去激活指令发送单元， 用于向小小区发送承载去激活指令， 以指示小小区 根据承载去激活指令而去激活自身无线承载；
下行数据获得单元， 用于获得未被终端从小小区处成功获取的下行数据； 端。
可选的， 该设备还可以包括重配置消息发送单元。该单元用于向终端发送 重配置消息， 以指示终端根据重配置消息，将小小区的无线承载映射到宏小区 的无线承载。
本发明实施例中，当该小小区承载的去激活设备还包括用于备份发送给小 小区的下行数据的备份单元时， 下行数据获得单元具体可以用于： 根据小小区 所发送的用于通知终端对于小小区发送的下行数据的接收状态的消息，从备份 单元所备份的下行数据中获得未被终端从小小区处成功获取的下行数据。
而若该设备不包含该备份单元， 则下行数据获得单元具体可以用于： 接收 小小区发送来的未被终端从小小区处成功获取的下行数据。
出于与上述小小区承载的去激活设备的同一发明构思，本发明实施例还提 供另一种小小区承载的去激活设备， 该设备包括下述功能单元：
去激活指令接收单元， 用于接收宏小区发送的承载去激活指令； 去激活执行单元， 用于根据去激活指令接收单元接收的承载去激活指令， 执行去激活小小区无线承载的操作。
其中， 该设备还可以包括： 消息发送单元， 用于在去激活指令接收单元收 宏小区发送的承载去激活指令后，向宏小区发送用于通知终端对于小小区发送 的下行数据的接收状态的消息。
或者， 该设备还可以包括的单元为下行数据发送单元。该单元用于在去激 活指令接收单元收宏小区发送的承载去激活指令后，向宏小区发送未被终端从 小小区处成功获取的下行数据。 上文介绍的方案是针对工作在非独立工作模式下的小小区，提出的在同一 宏小区下的小小区承载的激活与去激活方案， 考虑到实际应用中， 终端可能会 在不同的宏小区之间进行切换，但是现有技术中并未提出在这种情况下，如何 对终端切换到的目标宏小区下的小小区承载进行激活， 为此， 本发明实施例还 提供了一种小小区承载的激活方案。该方案在终端将要从原宏小区切换到目标 宏小区时， 由目标宏小区来确定用于承载终端的业务数据的小小区， 然后， 基 于对确定出的小小区是否为当前承载终端的业务数据的原小小区这一条件的 判定， 向需要被激活的目标小小区发送承载激活请求，从而实现了对目标小小 区承载的激活。
以下结合说明书附图对本发明的实施例进行说明，应当理解， 此处所描述 的实施例仅用于说明和解释本发明， 并不用于限制本发明。 并且在不冲突的情 况下， 本说明中的实施例及实施例中的特征可以互相结合。
首先， 本发明实施例提供一种小小区承载的激活方法， 该方法的具体流程 示意图如图 1 1a所示， 主要包括下述步骤：
步骤 11 1 , 目标宏小区接收原宏小区发送的切换请求命令；
在实际应用中， 终端可以在进行信号质量的检测后，将针对原宏小区和目 标宏小区所分别得到的宏小区信号质量检测结果发送给原宏小区，由原宏小区 根据该些宏小区信号质量检测结果和 /或原宏小区的小区负载等信息， 判断终 端是否需要切换到目标宏小区。若判断结果为是， 则原宏小区向目标宏小区发 送上述切换请求命令。 可选的， 终端还可以对其所能检测到的小小区信号的信号质量进行检测， 得到相应的小小区信号质量检测结果，并把该小小区信号质量检测结果承载在 切换请求命令中发送给目标宏小区，以便目标宏小区可以根据该小小区信号质 量检测结果判定是否需要由小小区来承载终端的业务数据。
步骤 112 , 目标宏小区确定用于承载终端的业务数据的小小区， 并判断确 定出的该小小区是否为当前承载终端的业务数据的原小小区；在判断结果为确 定出的该小小区为当前承载终端的业务数据的原小小区时， 执行步骤 113 , 而 在判断结果为确定出的该小小区为不同于上述原小小区的目标小小区时，执行 步骤 114;
具体地， 目标宏小区可以根据终端业务的服务质量 QoS ( Qua l i ty of
Service )信息（该信息可以承载在切换请求命令中）， 并结合切换请求命令中 的小小区信号质量检测结果等，判断是否需要将终端的部分业务数据承载在小 小区上。如果判断结果为是， 则进一步确定用于承载终端的业务数据的小小区 是否为当前承载终端的业务数据的原小小区。 比如， 目标宏小区可以根据小小 区信号质量检测结果，确定出信号质量最好的小小区， 并根据该信号质量最好 的小小区所归属的宏小区，确定该信号质量最好的小小区是否为当前承载终端 的业务数据的原小小区； 或根据当前承载终端的业务数据的原小小区的标识 (原小小区的标识可携带于切换请求命令中由原宏小区发送给目标宏小区）， 通过比较该信号质量最好的小小区的标识是否与该原小小区的标识是否一致， 而确定该信号质量最好的小小区是否为当前承载终端的业务数据的原小小区； 等等。
在实际应用中， 还可能出现如图 l ib所示的场景。 在该场景下， 终端的业 务数据当前并没有由任何小小区承载。本发明实施例中， 可以将这样的情况视 为 "确定出的小小区不为当前承载终端的业务数据的原小小区"所涵盖的一种 特殊情况。 当出现该情况时， 同样需要执行后续步骤 114。
步骤 113 , 目标宏小区向原小小区发送包含目的隧道号的承载路径切换请 求，以指示原小小区切换到该目的隧道号所表示的位于目标宏小区与原小小区 之间的隧道；
由于当前承载终端的业务数据的原小小区与确定出的承载终端的业务数 据的小小区相同， 因此此时不需要激活该原小小区， 而只需要原小小区将其接 收上行数据的隧道切换为位于目标宏小区与原小小区之间的隧道即可。
步骤 114 , 目标宏小区向目标小小区发送承载激活请求， 以激活目标小小 区建立无线承载。
由于当前承载终端的业务数据的原小小区与确定出的承载终端的业务数 据的小小区（目标小小区）不同， 因此需要对确定出的该目标小小区承载进行 激活。 具体地， 本发明实施例采用向目标小小区发送承载激活请求的方式， 来 活目标小小区建立无线承载。
其中， 该承载激活请求的作用在于： 指示将终端业务的无线承载映射到目 标小小区的某一层上， 如映射到分组数据汇聚协议 （ PDCP , Packet Data Convergence Protoco l )层上。该承载激活请求中可以携带终端的相关上下文， 如终端在原宏小区的小区无线网络临时标识（C-RNTI , Cel l Radio Network Temporary Ident if ier )、终端在目标宏小区的 C-RNTI、终端在小小区的 C-RNTI 以及终端能力信息等。 此外， 该相关上下文中还可以携带接入层配置 （如 MAC/RLC/PDCP的配置）信息， 以及无线承载上下文（如服务质量 QoS ( Qua l i ty of Servi ce )信息)等。
作为本步骤的一种具体实现， 可参照上文图 2〜图 10介绍的方案， 实现 目标小小区承载的激活过程， 本发明对此可不做具体限定。 本发明实施例中，当确定出的用于承载终端的业务数据的小小区为当前承 载终端的业务数据的原小小区时， 目标宏小区在接收到原小小区在切换到目标 宏小区与原小小区之间的隧道后发送的承载路径切换确认之后，还可以进一步 向原宏小区发送切换确认消息。从而目标宏小区后续还可以进一步接收原宏小 区根据该切换确认消息而发送来的下行数据， 并将下行数据发送给原小小区。 其中，原宏小区发送的该下行数据为： 原宏小区接收到切换确认消息后緩存的 欲通过原小小区发送给终端的下行数据。
而当确定出的用于承载终端的业务数据的小小区为不同于上述原小小区 的目标小小区时， 目标宏小区在接收到目标小小区在建立无线承载后发送的承 载激活确认消息之后，也可以进一步向原宏小区发送切换确认消息。从而目标 宏小区后续还可以进一步接收原宏小区根据该切换确认消息而发送来的下行 数据， 并将下行数据发送给原小小区。
其中，上述下行数据均为原宏小区在接收到切换确认消息后緩存的欲发送 给终端的下行数据。
通过本发明实施例提供的上述方法，在终端将要从原宏小区切换到目标宏 小区时， 由目标宏小区来确定用于承载终端的业务数据的小小区， 然后基于对 确定出的小小区是否为当前承载终端的业务数据的原小小区这一条件的判定， 向需要被激活的目标小小区发送承载激活请求， 以激活该目标小小区承载，从 而针对工作在非独立工作模式下的小小区，提出了一种当终端在不同的宏小区 之间进行切换时实现对终端切换到的目标宏小区下的小小区承载进行激活的 方案。
出于与上述方法相同的发明构思，本发明实施例还提供一种小小区承载的 去激活方法，该方法的具体实现流程示意图如图 12a所示，主要包括下述步骤： 步骤 121 , 原宏小区向目标宏小区发送切换请求命令；
步骤 122 , 原宏小区接收目标宏小区根据该切换请求命令而发送的切换确 认消息；
其中，该切换确认消息是目标宏小区在确定出承载终端的业务数据的目标 小小区后发送的。
步骤 123 , 在确定出的用于承载终端的业务数据的小小区不同于当前承载 该业务数据的原小小区时，原宏小区向原小小区发送承载去激活指令， 以指示 原小小区根据该承载去激活指令而去激活自身无线承载。
本发明实施例中，还可能发生目标宏小区确定出的承载终端的业务数据的 小区不为小小区，而是该目标宏小区自身的情况。比如在图 12b所示的场景下， 由于目标宏小区下没有小小区， 则当终端从原宏小区切换至目标宏小区时， 终 端的业务数据就只有依靠目标宏小区自身进行承载。本发明实施例中， 可以将 由目标宏小区自身承载终端的业务数据的情况视为 "用于承载终端的业务数据 的小小区不同于当前承载该业务数据的原小小区"所涵盖的一种特殊情况。 因 此， 此情况下， 原宏小区也会执行向原小小区发送承载去激活指令， 以指示原 小小区根据该承载去激活指令而去激活自身无线承载。 本发明实施例中，在原宏小区接收到该切换确认消息后，如果此时原小小 区的承载业务没有结束，则宏小区可以停止将该承载业务的下行数据转发至原 小小区， 并对被停止发送的这部分下行数据进行緩存， 以便后续将该部分下行 数据发送给目标宏小区， 再由目标宏小区将该部分下行数据发送给目标小小 区。
为保证在执行图 12a所示流程的过程中，原小小区向终端发送的下行数据 最终都能被终端成功接收， 图 12a所示的该流程还可以进一步包括下述步骤： 首先， 原宏小区获得未被终端从原小小区处成功获取的下行数据； 然后， 原宏小区再将获得的下行数据提供给目标宏小区。
其中，原宏小区可以采用以下两种方式之一， 来获得未被终端从原小小区 处成功获取的下行数据。
方式一：
采用方式一时， 假设原宏小区具备备份发送给原小小区的下行数据的功 能。基于该功能，原宏小区获得未被终端从原小小区处成功获取的下行数据的 方式可以为：根据原小小区所发送的用于通知终端对于原小小区发送的下行数 据的接收状态的消息，从原宏小区所备份的下行数据中， 获得未被终端从原小 小区处成功获取的下行数据。
方式二： 方式二中，原小小区可以将未被终端从原小小区处成功获取的下 行数据发送给原宏小区 ,从而原宏小区就可以获得未被终端从原小小区处成功 获取的下行数据。
采用方式二时， 原宏小区可以具备备份发送给原小小区的下行数据的功 能， 也可以不具备该功能。
由如图 12a所示的上述步骤可知，本发明实施例提供的上述小小区承载的 去激活方法，通过由终端离开的原宏小区来控制承载终端的业务数据的原小小 区的去激活，从而提出了一种当终端在不同的宏小区之间进行切换时实现对终 端离开的原宏小区下的小小区承载进行去激活的方案。
以下结合实际， 以两个具体的实施例为例，详细说明上述方案的实际应用 流程。
实施例 1 4叚设实施例 1的应用场景如图 13a所示，即终端从宏小区 A(即原宏小区） 下的小小区 a (即原小小区）移动到宏小区 B (即目标宏小区） 下的小小区 b (即目标小小区）。 在该应用场景下， 通过结合本发明实施例提供的小小区承 载的激活方法和小小区承载的去激活方法，实现终端从小小区 a切换到小小区 b的一个具体流程示意图如图 13b所示， 包括下述步骤：
步骤 131: 终端进行信号质量测量结果上报， 这里所说的信号质量测量结 果包括宏小区 A、 宏小区 B、 小小区 a和小小区 b的信号质量测量结果。
步骤 132: 宏小区 A根据终端的质量测量结果及自身的负载情况等， 确定 将终端切换到目标宏小区， 即宏小区 B。
步骤 133: 宏小区 A向宏小区 B发送切换请求命令。
该切换请求命令里可以携带小小区 a和小小区 b的信号质量测量结果。 步骤 134: 宏小区 B收到切换请求命令后， 根据终端的业务 QoS, 并结合 小小区 a和小小区 b的信号质量测量结果等，判断是否需要将终端的部分业务 数据承载在小小区 b上。若假设判断结果为是， 则向小小区 b发送承载激活请 求。
步骤 135: 小小区 b在激活自身的无线承载后， 向宏小区 B发送承载激活 确认消息。
步骤 136: 宏小区 B向宏小区 A发送切换确认消息。
步骤 137: 宏小区 A在接收到切换确认消息后， 对欲通过小小区 a发送给 终端的下行数据进行緩存。
步骤 138: 宏小区 A向小小区 a发送承载去激活指令， 以指示小小区 a根 据承载去激活指令而去激活自身无线承载。
步骤 139: 宏小区 A获取切换确认消息中包含的用于指示终端进行无线承 载配置的重配置信息， 并将该重配置信息承载在连接重配命令中发送给终端。
其中， 该重配置信息具体用于指示终端接入宏小区 B下的小小区 b。
步骤 1310: 小小区 a在接收到承载去激活指令后， 对欲发送给终端的下 行数据进行緩存， 并在去激活自身的无线承载后，将緩存的下行数据发送给宏 小区 A。
步骤 1311: 宏小区 A将自身緩存的下行数据和小小区 a发送给宏小区 A 的下行数据发送给宏小区 B。
步骤 1 312 , 宏小区 B将宏小区 A发送来的下行数据发送给小小区 b。
步骤 1 311的后续步骤可以包括： 终端根据连接重配命令进行连接重配， 然后在宏小区 B内进行下行同步及随机接入。 由于重配置信息中包含小小区 b 的配置， 因此终端还需在小小区进行同步和随机接入后， 才能进行上下行数据 传输。
实施例 2
4叚设实施例 2的应用场景如图 14a所示，即终端从宏小区 A (即原宏小区） 移动到宏小区 B (即目标宏小区）。 不同于图 1 3a的是， 图 14a中， 当前承载 终端的业务数据的小小区既在宏小区 A的覆盖范围内，且与宏小区 A之间具备 连接关系； 又在宏小区 B的覆盖范围内， 且与宏小区 B之间具备连接关系。
在图 14a所示的该应用场景下，通过结合本发明实施例提供的小小区承载 的激活方法和小小区承载的去激活方法，实现终端从宏小区 A切换到宏小区 B, 且并不发生小小区切换的一个具体流程示意图如图 14b所示， 包括下述步骤： 步骤 141 : 终端进行信号质量测量结果上报， 这里所说的信号质量测量结 果包括宏小区 A、 宏小区 B、 小小区的信号质量测量结果。
步骤 142 : 宏小区 A根据终端的质量测量结果及自身的负载情况等， 确定 将终端切换到目标宏小区， 即宏小区 B。
步骤 143: 宏小区 A向宏小区 B发送切换请求命令。
该切换请求命令里可以携带小小区的信号质量测量结果，宏小区 A与小小 区间的用于进行数据转发的隧道的标识以及小小区的无线承载的相关信息（如 承载标识、 终端业务的 QoS参数）等。
步骤 144 : 宏小区 B收接收到到切换请求命令后， 根据终端业务的 QoS、 小小区的信号质量测量结果和 /或宏小区 B的负载信息等， 决策使用当前正在 为终端服务的小小区继续提供服务，从而建立与该小小区间进行数据转发的隧 道， 并向该小小区发送承载路径切换请求。
其中，该承载路径切换请求中包括宏小区 A与小小区间的用于进行数据转 发的隧道的标识， 以及宏小区 B 与小小区间的用于进行数据转发的隧道的标 识。 步骤 145 : 小小区收到承载路径切换请求后， 从与宏小区 A之间建立的用 于进行数据转发的隧道切换到宏小区 B 与小小区间的用于进行数据转发的隧 道， 然后向宏小区 B反馈承载路径切换确认。
步骤 146 : 宏小区 B向宏小区 A反馈切换确认消息。
在该切换确认消息中，宏小区 B可以告知宏小区 A由可以继续维持无线承 载的小小区的标识所构成的小小区列表。 另夕卜， 该切换确认消息所包含的用于 指示终端进行无线承载配置的重配置信息中，还可以包括由需要终端维持的无 线承载所对应的小小区的标识构成的小小区列表。
步骤 147 : 宏小区 A收到切换确认消息后， 对欲发送给终端的下行数据进 行緩存， 而不再对该些下行数据进行下发。
步骤 148 : 宏小区 A提取切换确认消息里的重配置信息发送给终端。
不同于实施例 1 中的宏小区 A所执行的步骤， 本步骤 148 中， 宏小区 A 无需向小小区发送承载去激活指令。
步骤 149 : 宏小区 A将緩存的下行数据发送给宏小区 B。
步骤 1410: 宏小区 B将宏小区 A发送的下行数据发送给小小区。
步骤 1410的后续步骤可以包括：
终端根据重配置信息进行连接重配后，在宏小区 B内进行下行同步及随机 接入； 然后， 终端与宏小区 B之间进行上下行数据的发送。
其中，需要说明的是，对于重配置信息中指定的需继续维持承载的小小区， 终端继续维持与该小小区相关的无线配置。
比较实施例 1和实施例 2可知， 由于实施例 1中， 终端在宏小区间切换时 也发生了小小区间的切换， 因此实施例 1中需要由原宏小区去激活原小小区， 并由目标宏小区激活目标小小区。在这过程中， 小小区与终端间的业务会有一 段时间处于中断状态， 从而原小小区的未发数据 /未确认被终端接收的数据还 需要先转发给原宏小区， 然后再由原宏小区转发给目标宏小区。 而实施例 2 中， 由于终端在宏小区间切换时并没有发生小小区间的切换， 因此实施例 2 中不需要由原宏小区去激活原小小区， 也不需要由目标宏小区激活目标小小 区。 为了解决针对工作在非独立工作模式下的小小区，现有技术未提出当终端 在不同的宏小区之间进行切换时，如何实现对终端切换到的宏小区下的小小区 承载进行激活的问题， 本发明实施例还提供一种小小区承载的激活设备。该设 备主要包括下述功能单元：
小小区确定单元， 用于在接收到原宏小区发送的切换请求命令后，确定用 于承载终端的业务数据的小小区；
切换请求发送单元，用于当小小区确定单元确定出的小小区为当前承载所 述业务数据的原小小区时，向原小小区发送包含目的隧道号的承载路径切换请 求，以指示原小小区切换到目的隧道号所表示的位于目标宏小区与原小小区之 间的隧道；
激活请求发送单元，用于当小小区确定单元确定出的小小区为不同于原小 小区的目标小小区时， 向目标小小区发送承载激活请求， 以激活目标小小区建 立无线 7 载。
可选的， 当小小区确定单元确定出的小小区为原小小区时， 上述设备还可 以进一步包括切换确认消息发送单元、 下行数据接收单元和下行数据发送单 元。 该些单元的主要功能如下：
切换确认消息发送单元，用于在接收到原小小区在根据切换请求发送单元 发送的承载路径切换请求切换到上述隧道后发送的承载路径切换确认之后 ,向 原宏小区发送切换确认消息。
下行数据接收单元，用于接收原宏小区根据切换确认消息发送单元发送的 切换确认消息而发送来的下行数据。 其中， 这里所说的下行数据为： 原宏小区 接收切换确认消息后緩存的欲通过原小小区发送给终端的下行数据。
下行数据发送单元，用于将下行数据接收单元接收的下行数据发送给原小 小区。
而当小小区确定单元确定出的小小区为目标小小区时 ,上述设备也可以进 一步包括切换确认消息发送单元、 下行数据接收单元和下行数据发送单元。该 些单元的主要功能如下：
切换确认消息发送单元，用于在接收到目标小小区在建立无线承载后发送 的承载激活确认消息之后， 向原宏小区发送切换确认消息。 下行数据接收单元，用于接收原宏小区根据切换确认消息发送单元发送的 切换确认消息而发送来的下行数据。其中， 这里所说的下行数据为原宏小区在 接收到切换确认消息后緩存的欲发送给终端的下行数据。
下行数据发送单元，用于将下行数据接收单元接收的下行数据发送给目标 小小区。
为了解决针对工作在非独立工作模式下的小小区，现有技术中未提出当终 端在不同的宏小区之间进行切换时，如何实现对终端切换到的宏小区下的小小 区承载进行激活的问题， 本发明实施例还提供一种小小区承载的去激活设备。 该设备主要包括下述功能单元：
切换请求命令发送单元， 用于向目标宏小区发送切换请求命令； 切换确认消息接收单元，用于接收目标宏小区根据切换请求命令发送单元 发送的切换请求命令而发送的切换确认消息； 其中， 该切换确认消息是目标宏 小区在确定出承载终端的业务数据的目标小小区后发送的；
承载去激活指令发送单元，用于在切换确认消息接收单元接收到切换确认 消息后， 当目标小小区不同于当前承载终端的业务数据的原小小区时， 向原小 小区发送承载去激活指令，以指示原小小区根据承载去激活指令而去激活自身 无线承载。
可选的， 该设备还可以包括緩存单元和发送单元。该緩存单元用于在切换 确认消息接收单元接收到切换确认消息后，緩存欲发送给终端的下行数据； 而 该发送单元则用于将緩存单元緩存的下行数据发送给目标宏小区。
可选的， 该设备还可以包括获得单元和提供单元。该获得单元用于获得未 被终端从所述原小小区处成功获取的下行数据；而该提供单元则用于将获得单 元获得的下行数据提供给目标宏小区。
可选的， 上述获得单元具体可以用于： 接收原小小区发送来的未被终端从 原小小区处成功获取的下行数据。
可选的，该设备还可以包括用于备份发送给原小小区的下行数据的备份单 元。 基于该备份单元的功能， 上述获得单元具体也可以用于： 根据原小小区所 发送的用于通知终端对于原小小区发送的下行数据的接收状态的消息，从原宏 小区所备份的下行数据中， 获得未被终端从原小小区处成功获取的下行数据。 需要说明的是， 本发明实施例中， 宏基站、 小小区和终端 UE可能采用的 一种用户面协议栈如图 15a所示。 当采用该用户面协议栈时， 用于实现本发明 实施例提供的方案的终端具备至少两套 PDCP/RLC/MAC/PHY实体。 实体的数目 取决于所连宏小区及小小区的总数目， 每套 PDCP/RLC/MAC/PHY对应一个宏小 区 /小小区。 同时， 终端具备同时连接到多个基站的能力， 而且可以根据基站 下发的 RRC消息， 对多套 PDCP/RLC/MAC/PHY实体进行配置。 而宏基站的 PDCP 与小小区的 PDCP则具备通过 X2接口进行承载映射以及相关 PDCP层参数交互 的能力。
宏基站、小小区和终端 UE可能采用的另一种用户面协议栈如图 15b所示。 当采用该用户面协议栈时，用于实现本发明实施例提供的方案的终端具备至少 两套 RLC/MAC/PHY实体， 实体的数目取决于所连宏小区及小小区的总数目，每 套 RLC/MAC/PHY对应一个宏小区 /小小区。 同时， 终端具备同时连接到多个基 站的能力， 而且可以根据基站下发的 RRC消息， 对多套 RLC/MAC/PHY实体进行 配置。终端的 PDCP具备跟多个 RLC实体进行数据交互的能力；而宏基站的 PDCP 与小小区的 PDCP具备通过 X2接口进行承载映射以及相关 PDCP层参数交互的 能力。
本发明实施例中， 宏基站、 小小区和终端 UE所可能采用的一种控制面协 议栈如图 15c所示。 由图 15c可知， 与现有协议栈相比， 图 15c所示的该控制 面协议栈本身并没有改动。 但宏基站 RRC 层还具备与小小区基站 RRC 进行 PDCP/RLC/MAC/PHY 配置参数交互的能力， 宏基站 RRC 还具备对终端的多套 PDCP/RLC/MAC/PHY进行配置的能力 （通过 RRC消息）， 小小区的 RRC层除了与 宏基站进行 PDCP/RLC/MAC/PHY配置参数交互的能力外， 无需与终端进行 RRC 消息交互， 但可以进行系统消息的广播， 以及对小小区 自 己的 PDCP/RLC/MAC/PHY进行配置。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通 技术人员来说， 在不脱离本发明原理的前提下， 还可以做出若干改进和润饰， 这些改进和润饰也应视为本发明的保护范围。

Claims

权 利 要 求
1、 一种小小区承载的激活方法， 其特征在于， 包括：
宏小区向小小区发送承载激活请求后，緩存待通过小小区建立的无线承载 进行发送的下行数据；
接收承载激活确认消息， 其中， 所述承载激活确认消息是根据所述承载激 活请求而建立起无线承载的小小区发送的； 并
将緩存的所述下行数据发送给所述建立起无线承载的小小区。
2、 如权利要求 1所述的方法， 其特征在于， 在宏小区向小小区发送承载 激活请求前， 所述终端已与原小小区之间建立无线承载； 则
宏小区向小小区发送承载激活请求， 具体包括：
宏小区判断是否要将所述原小小区的业务转移至与宏小区相连接的其他 小小区； 并
在判断结果为是时， 向所述其他小小区发送承载激活请求。
3、 如权利要求 2所述的方法， 其特征在于， 宏小区向小小区发送承载激 活请求的同时， 所述方法还包括：
宏小区向所述原小小区发送承载去激活指令， 其中， 该指令用于指示所述 原小小区对其无线承载执行去激活； 并
获得未被终端从所述原小小区处成功获取的下行数据； 贝' J
所述方法还包括：
宏小区在接收到所述承载激活确认消息后，将获得的所述下行数据发送给 所述建立起无线承载的小小区。
4、 如权利要求 2所述的方法， 其特征在于， 宏小区接收承载激活确认消 息后， 所述方法还包括：
宏小区向所述原小小区发送承载去激活指令， 其中， 该指令用于指示所述 原小小区对其无线承载执行去激活； 并
获得未被终端从所述原小小区处成功获取的下行数据； 贝' J
所述方法还包括：
宏小区在接收到所述承载激活确认消息后，将获得的所述下行数据发送给 所述建立起无线承载的小小区。
5、 如权利要求 3或 4所述的方法， 其特征在于， 所述方法还包括： 宏小 区备份发送给所述原小小区的下行数据； 则
宏小区获得未被终端从所述原小小区处成功获取的下行数据， 具体包括： 宏小区根据所述原小小区所发送的用于通知终端对于所述原小小区发送 的下行数据的接收状态的消息，从宏小区所备份的下行数据中， 获得未被终端 从所述原小小区处成功获取的下行数据。
6、 如权利要求 3或 4所述的方法， 其特征在于， 宏小区获得未被终端从 所述原小小区处成功获取的下行数据， 具体包括：
宏小区接收所述原小小区发送来的未被终端从所述原小小区处成功获取 的下行数据。
7、 如权利要求 1所述的方法， 其特征在于， 在宏小区向小小区发送承载 激活请求前， 所述终端未与任何小小区建立无线承载； 则
宏小区向小小区发送承载激活请求， 具体包括：
宏小区判断所述终端的业务是否可以由小小区承载； 并
在判断结果为是时， 向与所述宏小区相连接的小小区发送承载激活请求。
8、 一种小小区承载的激活方法， 其特征在于， 包括：
小小区接收宏小区发送的承载激活请求； 并
在根据所述承载激活请求建立起无线承载后，向宏小区发送承载激活确认 消息；
小小区接收宏小区发送的待发送给终端的下行数据； 以及
通过小小区建立的无线承载， 将所述下行数据发送给所述终端。
9、 一种小小区承载的去激活方法， 其特征在于， 包括：
宏小区向小小区发送承载去激活指令，以指示所述小小区根据所述承载去 激活指令而去激活自身无线承载； 并
获得未被终端从所述小小区处成功获取的下行数据； 以及
将所述下行数据提供给所述终端。
10、 如权利要求 9所述的方法， 其特征在于， 还包括：
宏小区向终端发送重配置消息， 以指示所述终端根据所述重配置消息，将 所述小小区的无线承载映射到宏小区的无线承载。
11、 如权利要求 9或 10所述的方法， 其特征在于， 所述方法还包括： 宏 小区备份发送给所述小小区的下行数据； 贝' J
宏小区获得未被终端从所述小小区处成功获取的下行数据， 具体包括： 宏小区根据所述小小区所发送的用于通知所述终端对于所述小小区发送 的下行数据的接收状态的消息，从宏小区所备份的下行数据中， 获得未被终端 从所述小小区处成功获取的下行数据。
12、 如权利要求 9或 10所述的方法， 其特征在于， 宏小区获得未被终端 从所述小小区处成功获取的下行数据， 具体包括：
宏小区接收所述小小区发送来的未被终端从所述小小区处成功获取的下 行数据。
13、 一种小小区承载的去激活方法， 其特征在于， 包括：
小小区接收宏小区发送的承载去激活指令；
根据所述承载去激活指令， 执行去激活所述小小区无线承载的操作。
14、 如权利要求 13所述的方法， 其特征在于， 所述小小区接收所述承载 去激活指令后， 所述方法还包括：
所述小小区向宏小区发送用于通知终端对于所述小小区发送的下行数据 的接收状态的消息； 或
所述小小区向宏小区发送未被终端从所述小小区处成功获取的下行数据。
15、 一种小小区承载的激活设备， 其特征在于， 包括：
激活请求发送单元， 用于向小小区发送承载激活请求；
緩存单元， 用于在激活请求发送单元发送承载激活请求后，緩存待通过小 小区建立的无线承载进行发送的下行数据；
确认消息接收单元， 用于接收承载激活确认消息； 其中， 所述承载激活确 认消息是根据激活请求发送单元发送的承载激活请求而建立起无线承载的小 小区发送的；
緩存数据发送单元，用于将緩存单元緩存的所述下行数据发送给所述建立 起无线承载的小小区。
16、 如权利要求 15所述的设备， 其特征在于， 在激活请求发送单元向小 小区发送承载激活请求前， 所述终端已与原小小区之间建立无线承载； 贝' J 激活请求发送单元具体包括：
判断模块，用于判断是否要将所述原小小区的业务转移至与宏小区相连接 的其他小小区；
发送模块， 用于在判断单元得到的判断结果为是时， 向所述其他小小区发 送承载激活请求。
17、 如权利要求 16所述的设备， 其特征在于， 所述设备还包括： 去激活指令发送单元，用于在激活请求发送单元向小小区发送承载激活请 求的同时， 向所述原小小区发送承载去激活指令， 其中， 该指令用于指示所述 原小小区对其无线承载执行去激活；
获得单元， 用于在去激活指令发送单元发送承载去激活指令后， 获得未被 终端从所述原小小区处成功获取的下行数据；
下行数据发送单元，用于在确认消息接收单元接收到所述承载激活确认消 息后 , 将获得单元获得的所述下行数据发送给所述建立起无线承载的小小区。
18、 如权利要求 16所述的设备， 其特征在于， 所述设备还包括： 去激活指令发送单元，用于在确认消息接收单元接收到承载激活确认消息 后， 向所述原小小区发送承载去激活指令， 其中， 该指令用于指示所述原小小 区对其无线承载执行去激活；
获得单元， 用于在去激活指令发送单元发送承载去激活指令后， 获得未被 终端从所述原小小区处成功获取的下行数据；
下行数据发送单元，用于在确认消息接收单元接收到所述承载激活确认消 息后 , 将获得单元获得的所述下行数据发送给所述建立起无线承载的小小区。
19、 如权利要求 17或 18所述的设备， 其特征在于， 所述设备还包括： 备份单元， 用于备份发送给所述原小小区的下行数据； 贝' J
所述获得单元具体用于： 在去激活指令发送单元发送承载去激活指令后 , 根据所述原小小区所发送的用于通知终端对于所述原小小区发送的下行数据 的接收状态的消息，从备份单元所备份的下行数据中， 获得未被终端从所述原 小小区处成功获取的下行数据。
20、 如权利要求 17或 18所述的设备， 其特征在于， 所述获得单元具体用 于： 在去激活指令发送单元发送承载去激活指令后，接收所述原小小区发送来 的未被终端从所述原小小区处成功获取的下行数据。
21、 如权利要求 15所述的设备， 其特征在于， 在激活请求发送单元向小 小区发送承载激活请求前， 所述终端未与任何小小区建立无线承载； 则
激活请求发送单元具体包括：
判断模块， 用于判断所述终端的业务是否可以由小小区承载；
发送模块， 用于在判断模块得到的判断结果为是时， 向与所述设备相连接 的小小区发送承载激活请求。
22、 一种小小区承载的激活设备， 其特征在于， 包括：
激活请求接收单元， 用于接收宏小区发送的承载激活请求；
确认消息发送单元，用于在根据激活请求接收单元接收的所述承载激活请 求建立起无线承载后， 向宏小区发送承载激活确认消息；
下行数据接收单元， 用于接收宏小区发送的待发送给终端的下行数据； 下行数据发送单元， 用于通过小小区建立的无线承载，将下行数据接收单 元接收的所述下行数据发送给所述终端。
23、 一种小小区承载的去激活设备， 其特征在于， 包括：
去激活指令发送单元， 用于向小小区发送承载去激活指令， 以指示所述小 小区根据所述承载去激活指令而去激活自身无线承载；
下行数据获得单元，用于获得未被终端从所述小小区处成功获取的下行数 据； 所述终端。
24、 如权利要求 23所述的设备， 其特征在于， 所述设备还包括： 重配置消息发送单元， 用于向终端发送重配置消息， 以指示所述终端根据 所述重配置消息， 将所述小小区的无线承载映射到宏小区的无线承载。
25、 如权利要求 23或 24所述的设备， 其特征在于， 所述设备还包括： 备份单元， 用于备份发送给所述小小区的下行数据； 贝' J
下行数据获得单元具体用于：根据所述小小区所发送的用于通知所述终端 对于所述小小区发送的下行数据的接收状态的消息，从备份单元所备份的下行 数据中， 获得未被终端从所述小小区处成功获取的下行数据。
26、 如权利要求 23或 24所述的设备， 其特征在于， 下行数据获得单元具 体用于：接收所述小小区发送来的未被终端从所述小小区处成功获取的下行数 据。
27、 一种小小区承载的去激活设备， 其特征在于， 包括：
去激活指令接收单元， 用于接收宏小区发送的承载去激活指令； 去激活执行单元，用于根据去激活指令接收单元接收的所述承载去激活指 令， 执行去激活所述小小区无线承载的操作。
28、 如权利要求 27所述的设备， 其特征在于， 所述设备还包括： 消息发送单元，用于在去激活指令接收单元收宏小区发送的承载去激活指 令后，向宏小区发送用于通知终端对于所述小小区发送的下行数据的接收状态 的消息； 或
下行数据发送单元，用于在去激活指令接收单元收宏小区发送的承载去激 活指令后， 向宏小区发送未被终端从所述小小区处成功获取的下行数据。
29、 一种小小区承载的激活方法， 其特征在于， 包括：
目标宏小区接收到原宏小区发送的切换请求命令后 ,确定用于承载终端的 业务数据的小小区；
当确定出的所述小小区为当前承载所述业务数据的原小小区时，向所述原 小小区发送包含目的隧道号的承载路径切换请求，以指示所述原小小区切换到 所述目的隧道号所表示的位于目标宏小区与原小小区之间的隧道；
当确定出的所述小小区为不同于所述原小小区的目标小小区时，向所述目 标小小区发送承载激活请求， 以激活所述目标小小区建立无线承载。
30、 如权利要求 29所述的方法， 其特征在于， 当确定出的所述小小区为 所述原小小区时， 所述方法还包括：
目标宏小区在接收到所述原小小区在切换到所述隧道后发送的承载路径 切换确认之后， 向原宏小区发送切换确认消息； 并
接收原宏小区根据所述切换确认消息而发送来的下行数据； 以及 将所述下行数据发送给所述原小小区； 其中， 所述下行数据为： 原宏小区 接收所述切换确认消息后緩存的欲通过所述原小小区发送给终端的下行数据； 而当确定出的所述小小区为所述目标小小区时， 所述方法还包括： 目标宏小区在接收到所述目标小小区在建立无线承载后发送的承载激活 确认消息之后， 向原宏小区发送切换确认消息； 并
接收原宏小区根据所述切换确认消息而发送来的下行数据； 以及
将所述下行数据发送给所述目标小小区；
其中 ,所述下行数据为所述原宏小区在接收到所述切换确认消息后緩存的 欲发送给终端的下行数据。
31、 一种小小区承载的去激活方法， 其特征在于， 包括：
原宏小区向目标宏小区发送切换请求命令；
接收目标宏小区根据所述切换请求命令而发送的切换确认消息； 其中， 所 述切换确认消息是目标宏小区在确定出承载终端的业务数据的目标小小区后 发送的；
在确定出的所述目标小小区不同于当前承载所述业务数据的原小小区时， 原宏小区向所述原小小区发送承载去激活指令，以指示所述原小小区根据所述 承载去激活指令而去激活自身无线承载。
32、 如权利要求 31所述的方法， 其特征在于， 原宏小区接收所述切换确 认消息后， 还包括：
緩存欲发送给终端的下行数据； 并
将緩存的下行数据发送给目标宏小区。
33、 如权利要求 31或 32所述的方法， 其特征在于， 所述方法还包括： 原宏小区获得未被终端从所述原小小区处成功获取的下行数据； 以及 将获得的下行数据提供给目标宏小区。
34、 如权利要求 33所述的方法， 其特征在于， 所述方法还包括： 原宏小 区备份发送给所述原小小区的下行数据； 则
原宏小区获得未被终端从所述原小小区处成功获取的下行数据， 具体包 括：
原宏小区根据所述原小小区所发送的用于通知终端对于所述原小小区发 送的下行数据的接收状态的消息，从原宏小区所备份的下行数据中， 获得未被 终端从所述原小小区处成功获取的下行数据。
35、 如权利要求 33所述的方法， 其特征在于， 原宏小区获得未被终端从 所述原小小区处成功获取的下行数据， 具体包括：
原宏小区接收所述原小小区发送来的未被终端从所述原小小区处成功获 取的下行数据。
36、 一种小小区承载的激活设备， 其特征在于， 包括：
小小区确定单元， 用于在接收到原宏小区发送的切换请求命令后， 确定用 于承载终端的业务数据的小小区；
切换请求发送单元，用于当小小区确定单元确定出的所述小小区为当前承 载所述业务数据的原小小区时，向所述原小小区发送包含目的隧道号的承载路 径切换请求，以指示所述原小小区切换到所述目的隧道号所表示的位于目标宏 小区与原小小区之间的隧道；
激活请求发送单元，用于当小小区确定单元确定出的所述小小区为不同于 所述原小小区的目标小小区时， 向所述目标小小区发送承载激活请求， 以激活 所述目标小小区建立无线承载。
37、 如权利要求 36所述的设备， 其特征在于， 当小小区确定单元确定出 的所述小小区为所述原小小区时， 所述设备还包括：
切换确认消息发送单元，用于在接收到所述原小小区在根据切换请求发送 单元发送的所述承载路径切换请求切换到所述隧道后发送的承载路径切换确 认之后， 向原宏小区发送切换确认消息；
下行数据接收单元，用于接收原宏小区根据切换确认消息发送单元发送的 切换确认消息而发送来的下行数据；
下行数据发送单元，用于将下行数据接收单元接收的下行数据发送给所述 原小小区； 其中， 所述下行数据为： 原宏小区接收所述切换确认消息后緩存的 欲通过所述原小小区发送给终端的下行数据；
而当小小区确定单元确定出的所述小小区为所述目标小小区时，所述设备 还包括：
切换确认消息发送单元，用于在接收到所述目标小小区在建立无线承载后 发送的承载激活确认消息之后， 向原宏小区发送切换确认消息；
下行数据接收单元，用于接收原宏小区根据切换确认消息发送单元发送的 切换确认消息而发送来的下行数据； 下行数据发送单元，用于将下行数据接收单元接收的下行数据发送给所述 目标小小区； 其中， 所述下行数据为所述原宏小区在接收到所述切换确认消息 后緩存的欲发送给终端的下行数据。
38、 一种小小区承载的去激活设备， 其特征在于， 包括：
切换请求命令发送单元， 用于向目标宏小区发送切换请求命令； 切换确认消息接收单元，用于接收目标宏小区根据切换请求命令发送单元 发送的切换请求命令而发送的切换确认消息； 其中， 所述切换确认消息是目标 宏小区在确定出承载终端的业务数据的目标小小区后发送的；
承载去激活指令发送单元，用于在切换确认消息接收单元接收到所述切换 确认消息后， 当所述目标小小区不同于当前承载所述业务数据的原小小区时， 向所述原小小区发送承载去激活指令，以指示所述原小小区根据所述承载去激 活指令而去激活自身无线承载。
39、 如权利要求 38所述的设备， 其特征在于， 所述设备还包括： 緩存单元， 用于在切换确认消息接收单元接收到所述切换确认消息后，緩 存欲发送给终端的下行数据；
发送单元， 用于将緩存单元緩存的下行数据发送给目标宏小区。
40、 如权利要求 38或 39所述的设备， 其特征在于， 所述设备还包括： 获得单元， 用于获得未被终端从所述原小小区处成功获取的下行数据； 提供单元， 用于将获得单元获得的下行数据提供给目标宏小区。
41、 如权利要求 40所述的设备， 其特征在于， 所述设备还包括： 备份单元， 用于备份发送给所述原小小区的下行数据； 贝' J
所述获得单元具体用于：根据所述原小小区所发送的用于通知终端对于所 述原小小区发送的下行数据的接收状态的消息，从原宏小区所备份的下行数据 中， 获得未被终端从所述原小小区处成功获取的下行数据。
42、 如权利要求 40所述的设备， 其特征在于， 所述获得单元具体用于： 接收所述原小小区发送来的未被终端从所述原小小区处成功获取的下行数据。
PCT/CN2014/073213 2013-03-12 2014-03-11 小小区承载的激活与去激活方法及设备 Ceased WO2014139405A1 (zh)

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Citations (3)

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Publication number Priority date Publication date Assignee Title
CN101466125A (zh) * 2008-12-10 2009-06-24 上海华为技术有限公司 切换处理方法、家庭基站网关及网络系统
CN102045807A (zh) * 2009-10-16 2011-05-04 株式会社泛泰 小基站及控制其操作的方法
CN102469557A (zh) * 2010-11-15 2012-05-23 华为技术有限公司 接入基站方法、基站和用户设备

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101466125A (zh) * 2008-12-10 2009-06-24 上海华为技术有限公司 切换处理方法、家庭基站网关及网络系统
CN102045807A (zh) * 2009-10-16 2011-05-04 株式会社泛泰 小基站及控制其操作的方法
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