WO2014063337A1 - 系统间空口连接重定向的方法、设备和系统 - Google Patents

系统间空口连接重定向的方法、设备和系统 Download PDF

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Publication number
WO2014063337A1
WO2014063337A1 PCT/CN2012/083546 CN2012083546W WO2014063337A1 WO 2014063337 A1 WO2014063337 A1 WO 2014063337A1 CN 2012083546 W CN2012083546 W CN 2012083546W WO 2014063337 A1 WO2014063337 A1 WO 2014063337A1
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WIPO (PCT)
Prior art keywords
standard
network device
cell
connection
redirection
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PCT/CN2012/083546
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English (en)
French (fr)
Inventor
邢平平
戴明增
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2012/083546 priority Critical patent/WO2014063337A1/zh
Priority to EP12887171.2A priority patent/EP2911452B1/en
Priority to CN201280001417.9A priority patent/CN104081822B/zh
Publication of WO2014063337A1 publication Critical patent/WO2014063337A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0022Control or signalling for completing the hand-off for data sessions of end-to-end connection for transferring data sessions between adjacent core network technologies
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/18Management of setup rejection or failure

Definitions

  • the present invention relates to a mobile communication system, and in particular, to a method, device and system for redirecting air interface connections between systems. Background technique
  • LTE Long Term Evolution
  • 3G systems such as the Universal Mobile Telecommunications System (UMTS)
  • UMTS Universal Mobile Telecommunications System
  • the operator will use the protection strategy based on Circuit Switched (CS) service investment and the deployment strategy of LTE/Evolved Packet Core Network (EPC).
  • CS Circuit Switched
  • EPC LTE/Evolved Packet Core Network
  • the original CS domain voice solution is used to provide the voice service, and the LTE system is only used to process the data service. Therefore, the user equipment (UE) covered by the LTE system is switched to the CS network when the CS service is initiated. .
  • the redirection method used to implement service switching is complicated, including: the UE first establishes a connection with the first system, and performs a redirection decision after the connection is completed; When the UE is redirected to the second system, the connection between the UE and the first system is released; the UE reselects a second system cell to camp, and then establishes a connection with the second system.
  • the signaling interaction is frequent, the operation process is complicated, and the time is long, which results in a large call setup delay and affects the user experience.
  • Embodiments of the present invention provide a method, device, and system for redirecting air interface connections between systems, which are capable of Reduce the latency of inter-system interoperability during the redirection process.
  • a first aspect of the present invention provides a method for redirecting an air interface connection between systems, including: receiving, by a first mode network device, a connection request message sent by a user equipment UE in a first standard cell, and performing a redirection decision; After determining that the UE is redirected to the second-standard cell managed by the second-standard network device, the first-standard network device sends a notification message requesting the second-standard network device to allocate a connection establishment parameter to the UE; Receiving, by the second-standard network device, a response message carrying the connection establishment parameter, and sending the connection establishment parameter to the UE, so that the UE establishes a parameter according to the connection The second standard network device establishes a connection.
  • the performing the redirection decision includes: acquiring load information of the second standard cell, and performing weight according to a load of the second standard cell Directional judgment.
  • the performing the redirection decision includes: determining, when the load of the second standard cell is less than the first threshold, determining Redirecting the UE to the second standard cell; or, when the load of the first standard cell is greater than the load of the second standard cell, and the load of the first standard cell and the second standard When the difference between the loads of the cells is greater than the second threshold, it is determined to redirect the UE to the second standard cell.
  • the connection request message includes service type indication information
  • the service type indication information is used to indicate the type of the service initiated by the UE.
  • the method further includes: obtaining, according to the service type indication information, the UE initiated The type of the service is: when the type of the service initiated by the UE is a preset service type, acquiring load information of the second standard cell, and performing a redirection decision according to the load information of the second standard cell.
  • the service type indication information is used to indicate the service type indication information of the type of the service initiated by the UE, and the performing the redirection decision includes: obtaining, according to the service type indication information, The type of the service initiated by the UE; when the type of the service initiated by the UE is a preset service type, determining to redirect the UE to the second standard cell.
  • the sending the notification message requests the second-standard network device to allocate a connection for the UE.
  • the method further includes: selecting, according to the preset retargeting cell selection condition, a redirection target cell in the second standard cell that meets the redirection decision; and when the retargeting cell selection is successful, sending the The notification message requests the second standard network device to allocate a connection establishment parameter to the UE.
  • a sixth implementation manner of the first aspect when the connection request message includes measurement information of the second standard cell measured by the UE, And selecting, according to the preset redirection target cell selection condition, the redirection target cell in the second-standard cell that meets the redirection decision includes: obtaining measurement information of the second-standard cell measured by the UE; When the measurement information of the at least one cell in the second standard cell satisfies the preset condition, one cell is selected as the redirection target cell in the at least one cell.
  • connection request message includes a connection redirection flag bit for indicating whether the UE supports inter-system connection redirection, before the redirection decision is performed
  • the method includes: obtaining the connection redirection flag bit; performing a redirection decision when the connection redirection flag bit indicates that the UE supports inter-system connection redirection.
  • a second aspect of the present invention provides a method for redirecting air interface connections between systems, including: receiving, by a second-standard network device, a notification message sent by a first-standard network device, and allocating a message to the user equipment UE After the connection establishment parameter is successfully allocated to the UE, the second standard network device sends a response message carrying the connection establishment parameter to the first standard network device, so that the first standard The network device sends the connection establishment parameter to the UE.
  • the method further includes: acquiring measurement information of the second-standard cell, and selecting, according to the measurement information of the second-standard cell, the target cell to be redirected.
  • a third aspect of the present invention provides a method for redirecting an air interface connection between systems, including: a user equipment UE sends a connection request message to a first standard network device in a first standard cell; and the UE receives the first standard a connection establishment message sent by the network device, where the connection establishment message carries a connection establishment parameter allocated by the second-standard network device to the UE; and the UE establishes a connection with the second-standard network device according to the connection establishment parameter.
  • a fourth aspect of the present invention provides a first-standard network device for redirecting an air interface connection between systems, comprising: a receiving unit, configured to receive a connection request message sent by a user equipment UE in a first-standard cell; And performing, after the receiving unit receives the connection request message, performing a redirection decision; the sending unit, configured to, in the redirection determining unit, determine to redirect the UE to a second mode of network device management After the system is configured, the sending notification message requests the second-standard network device to allocate a connection establishment parameter to the UE, and the forwarding unit is configured to receive a response message that is sent by the second-standard network device and that carries the connection establishment parameter, And sending the connection establishment parameter to the UE, so that the UE establishes a connection with the second standard network device according to the connection establishment parameter.
  • the redirection determining unit is further configured to: acquire load information of the second standard cell, according to the second standard cell The load information is used for redirection decision; when the load of the second standard cell is less than the first threshold, determining to redirect the UE to the second standard cell; or, when the load of the first standard cell is When the load of the second standard cell is greater than the load between the load of the first standard cell and the load of the second standard cell is greater than a second threshold, determining to redirect the UE to the Second standard cell.
  • the redirection decision unit is further configured to: obtain, according to the service type indication information, a type of the service initiated by the UE; when the type of the service initiated by the UE is a preset service type, obtain the second The load information of the standard cell is redirected according to the load information of the second standard cell.
  • the redirection decision unit is further configured to: obtain, according to the service type indication information, a type of the service initiated by the UE; when the type of the service initiated by the UE is a preset service type, determine that the UE is to be used. Redirecting to the second standard cell.
  • the redirection determining unit is further configured to: meet the redirection decision according to the preset retargeting cell selection condition The redirecting target cell is selected in the standard cell; when the redirection target cell is successfully selected, the sending unit is notified to send the notification message to request the second standard network device to allocate a connection establishment parameter to the UE.
  • the redirection decision unit is further configured to: obtain measurement information of the second standard cell measured by the UE; and if the measurement information of the at least one cell exists in the second standard cell that meets the redirection decision, meet the preset When a condition is met, selecting one cell in the at least one cell as a redirect The target cell sends a notification message to the notification sending unit.
  • a sixth implementation manner of the fourth aspect when the connection request message includes a connection redirection flag bit for indicating whether the UE supports inter-system connection redirection, a UE support capability determining unit, configured to obtain the connection redirection flag bit in a connection request message received by the receiving unit, and when the connection redirection flag bit indicates that the UE supports inter-system connection redirection, The redirection decision unit is notified to perform a redirection decision.
  • a fifth aspect of the present invention provides a second-standard network device for redirecting air interface connections between systems, including: a receiving unit, configured to receive a notification message sent by a first-standard network device; and an allocating unit, configured to receive After receiving the notification message, the unit allocates a connection establishment parameter to the user equipment UE, and the sending unit is configured to: after the allocation unit successfully allocates the connection establishment parameter to the UE, send a response message carrying the connection establishment parameter to the The first standard network device, so that the first standard network device sends the connection establishment parameter to the UE.
  • the method when the notification message includes the measurement information of the second standard cell, the method further includes: an acquiring unit, configured to receive the notification at the receiving unit And acquiring, by the message, the measurement information of the second-standard cell, the selecting unit, configured to select, according to the measurement information of the second-standard cell acquired by the acquiring unit, the redirect target cell, and notify the The allocating unit allocates the connection establishment parameter to the UE in the selected redirection target cell.
  • a sixth aspect of the present invention provides a user equipment for redirecting an air interface connection between systems, comprising: a sending unit, configured to send a connection request message to a first standard network device in a first standard cell; and a receiving unit, configured to: Receiving, by the first standard network device, a connection setup message, where the connection setup message carries a connection establishment parameter allocated by the second standard network device to the UE, and a connection establishment unit, configured to receive the Obtaining the connection establishment parameter in the connection establishment message, and establishing a connection with the second standard network device according to the connection establishment parameter.
  • the user equipment further includes: a measuring unit, configured to measure measurement information of the second standard cell, and send the measurement information to the Sending unit, so that the sending unit sends the connection request message to the first standard network device.
  • a seventh aspect of the present invention provides a first-standard network device for inter-system air interface connection redirection, where the first-standard network device includes: a receiver, a processor, and a transmitter; and the receiver is configured to receive a connection request message sent by the user equipment UE in the first standard cell; the processor, configured to: after the receiver receives the connection request message, perform a redirection decision; After the processor determines to redirect the UE to the second-standard cell managed by the second-standard network device, sending a notification message requesting the second-standard network device to allocate a connection establishment parameter to the UE; Receiving, by the second standard network device, a response message carrying the connection establishment parameter; the transmitter is further configured to send the connection establishment parameter to the UE, so that the UE is configured according to the The connection establishment parameter establishes a connection with the second standard network device.
  • the processor is further configured to: acquire load information of the second standard cell, and perform load information according to the second standard cell a redirection decision; when the load of the second standard cell is less than the first threshold, determining to redirect the UE to the second standard cell; or, when the load of the first standard cell is greater than the first Determining to redirect the UE to the second standard cell when the load of the two-standard cell is different, and the difference between the load of the first-standard cell and the load of the second-standard cell is greater than a second threshold .
  • the processor when the connection request message includes service type indication information indicating a type of the service initiated by the UE, the processor further uses And: determining, according to the service type indication information, a type of the service initiated by the UE; when the type of the service initiated by the UE is a preset service type, determining to redirect the UE to the second standard Community.
  • the processor when the redirection decision is satisfied When the number of the two-standard cell is at least one, the processor is further configured to: select, according to the preset retargeting cell selection condition, a redirection target cell in the second-standard cell that meets the redirection decision; When the target cell selection is successful, the notification message is sent to request the second standard network device to allocate a connection establishment parameter to the UE.
  • the processor is further configured to: obtain measurement information of the second standard cell measured by the UE; when the measurement information of the at least one cell in the second standard cell that meets the redirection decision satisfies a preset condition, A cell is selected as a redirect target cell in one cell, and the notification message is sent.
  • the processor when the connection request message includes a connection redirection flag bit for indicating whether the UE supports inter-system connection redirection, the processor is further configured to: The connection redirection flag is obtained in the connection request message, and the redirection decision is performed when the connection redirection flag indicates that the UE supports inter-system connection redirection.
  • An eighth aspect of the present invention provides a second-standard network device for inter-system air interface connection redirection, where the second-standard network device includes: a receiver, a processor, and a transmitter; and a receiver, configured to receive the first a notification message sent by the system network device, configured to: after the receiver receives the notification message, allocate a connection establishment parameter to the user equipment UE; and a transmitter, configured to successfully allocate a connection establishment for the UE in the processor After the parameter, the response message carrying the connection establishment parameter is sent to the first standard network device, so that the first standard network device sends the connection establishment parameter to the UE.
  • the processor when the notification message includes the measurement information of the second standard cell, the processor is further configured to: receive the notification at the receiver Obtaining, in the message, the measurement information of the second standard cell; according to the acquired second standard cell The measurement information is selected to redirect the target cell, and after the redirected target cell is selected, the connection establishment parameter is allocated to the UE in the selected redirected target cell.
  • a ninth aspect of the present invention provides a user equipment for inter-system air interface connection redirection, the user equipment comprising: a transmitter, a receiver, and a processor; and a transmitter, configured to send a connection request in a first standard cell a message to the first-standard network device; a receiver, configured to receive, by the first-standard network device, a connection establishment message that carries a connection establishment parameter allocated by the second-standard network device to the UE; In the connection establishment message received by the receiver, the connection establishment parameter is obtained, and a connection is established with the second standard network device according to the connection establishment parameter.
  • the receiver is further configured to receive a downlink signal of the second standard cell
  • the processor is further configured to: obtain, according to the downlink signal,
  • the measurement information of the second standard cell is stored in the connection request message and sent by the transmitter to the first standard network device.
  • the first-standard network device after receiving the connection request message sent by the UE, performs a redirection decision, and when determining to redirect the UE to the second-standard cell, Notifying the second-standard network device to allocate a connection establishment parameter to the UE, and notifying the UE of the connection establishment parameter fed back by the second-standard network device, so that the UE establishes a parameter according to the connection and the second-standard network.
  • Establishing connections between devices reduces signaling interaction between systems, systems, and UEs, saves signaling overhead, shortens connection establishment delays, and improves user experience.
  • FIG. 1 is a flowchart of a method for redirecting air interface connection between systems according to an embodiment of the present invention
  • FIG. 2 is a flowchart of another method for redirecting air interface connection between systems according to an embodiment of the present invention
  • 3 is a flowchart of another method for redirecting air interface connections between systems according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a first-standard network device for redirecting air interface connections between systems according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of another first-type network device for redirecting air interface connections between systems according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a second-standard network device for redirecting air interface connections between systems according to an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of another second-standard network device for redirecting air interface connections between systems according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a user equipment for redirecting air interface connections between systems according to an embodiment of the present disclosure
  • FIG. 9 is a schematic structural diagram of another user equipment for redirecting air interface connection between systems according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a system for redirecting air interface connections between systems according to an embodiment of the present invention
  • FIG. 11 is a schematic structural diagram of a first network device for redirecting air interface connections between systems according to an embodiment of the present invention
  • FIG. 12 is a schematic structural diagram of a second network device for redirecting air interface connections between systems according to an embodiment of the present disclosure
  • FIG. 13 is a schematic structural diagram of a user equipment for redirecting air interface connections between systems according to an embodiment of the present invention. detailed description
  • the user equipment UE sends a connection request message to the first-standard network device in the first-standard cell.
  • the connection request message may include at least one of the service type indication information, the measurement information of the second standard cell, and the connection redirection flag.
  • the service type indication information is used to indicate the type of the service initiated by the UE.
  • the connection redirection flag is used to indicate whether the UE supports inter-system connection redirection.
  • the second standard cell and the first standard cell respectively belong to different system systems, and some or all of the same coverage areas may be obtained according to the configuration information, for example, may be obtained by configuring neighbor cell information. It can also be obtained through a preset cell coverage relationship table.
  • the first standard network device receives a connection request message sent by the UE in the first standard cell, and performs a redirection decision.
  • the first-standard network device may be a base station, or may be a station controller, for example, may be an evolved base station (eNB) in an LTE system, or may be a radio network controller in a UMTS system.
  • eNB evolved base station
  • RNC Radio Network Controller
  • the redirection decision may be specifically performed according to the type of the service initiated by the UE and/or the load information of the second-standard cell, and is performed when the first-standard network device receives the connection request message, and does not perform the UE.
  • the connection processing with the first-standard network device can reduce the delay caused by the redirection.
  • the first-standard network device After determining that the UE is redirected to the second-standard cell managed by the second-standard network device, the first-standard network device sends a notification message requesting the second-standard network device to allocate a connection establishment parameter to the UE. .
  • the second standard network device and the first standard network device respectively belong to different systems, for example, when the first standard network device is an RNC in a UMTS system,
  • the second-standard network device may be an eNB in the LTE system or a base station controller in the GSM system.
  • the first-standard network device is a base station in the LTE system
  • the second-standard network device may be a UMTS system.
  • the RNC In the RNC.
  • the notification message is used to request the second-standard network device to allocate a connection establishment parameter to the UE; the notification message may include a redirect target cell, or a second-standard cell that satisfies a redirection decision; When the message includes the measurement information of the second-standard cell, the notification message may further include measurement information of the second-standard cell; the notification message may be transmitted through a standard interface between the systems, for example, between the eNB and the RNC. A direct interface is established. For the eNB and RNC of the co-site, the internal interface can also be used for transmission.
  • the connection establishment parameter includes channel resource information, and may further include a UE temporary identifier, a discontinuous reception (DRX) period coefficient, a signaling bearer setup information, and the like; the UE temporary identifier refers to a second standard.
  • the identifier assigned by the network device to the UE for example, the radio network temporary identifier (RNTI)
  • step 101 For a description of the second standard cell, refer to step 101.
  • the method further includes:
  • the second standard cell that satisfies the redirection decision refers to the second standard cell; when it is determined according to the load information of the second standard cell, the weight is determined.
  • the second-standard cell that satisfies the redirection decision refers to the second-standard cell that satisfies the load redirection decision.
  • the pre-set redirection target cell selection condition may be load or frequency band information or randomly selected, or a combination thereof, for example, selecting a minimum load as a redirect target cell;
  • the preset redirection target cell selection condition may also be the measurement information of the second system cell.
  • the second standard network device receives a notification message sent by the first standard network device, and allocates a connection establishment parameter to the UE.
  • the allocating a connection establishment parameter to the UE includes: acquiring a redirect target cell; and allocating a connection establishment parameter to the UE in the redirect target cell.
  • the obtaining the redirecting target cell may be obtained according to the information carried in the notification message, and may also be obtained according to the source of the notification message. For example, when there is only one cell under the first standard network device, the second standard network is used. When receiving the notification message sent by the first standard network device, the device may acquire the redirect target cell according to a preset cell coverage relationship.
  • the second-standard network device After the connection establishment parameter is successfully allocated to the UE, the second-standard network device sends a response message carrying the connection establishment parameter to the first-standard network device.
  • the response message is used to send the connection establishment parameter allocated by the second standard network device to the first standard network device, so that the first standard network device sends the connection establishment parameter to the UE. And causing the UE to establish a connection with the second-standard network device according to the connection establishment parameter.
  • the sending of the response message may be performed by using a standard interface between the systems. For details, refer to the related description of the notification message in step 103.
  • the first-standard network device receives a response message that is sent by the second-standard network device and carries the connection establishment parameter, and sends the connection establishment parameter to the UE.
  • connection establishment parameter may be sent to the UE by using an existing connection setup message, so that the UE establishes a connection with the second standard network device according to the connection establishment parameter.
  • the UE receives a connection setup message sent by the first standard network device, and obtains the connection establishment parameter.
  • the UE establishes a connection with the second standard network device according to the connection establishment parameter.
  • the first-standard network device immediately enters the connection request message sent by the UE.
  • the line redirection decision is omitted, and the connection establishment process between the UE and the first-standard network device is omitted.
  • the notification message is sent to trigger the second-standard network device to Assigning a connection establishment parameter to the UE in the redirecting target cell, so that the UE can directly connect with the second-standard network device according to the allocated connection establishment parameter, and does not need to re-select the second-standard cell, thereby effectively reducing the first-standard network.
  • the device and the signaling interaction between the second-standard network device and the UE save signaling overhead, shorten connection establishment delay, and improve user experience.
  • a method for redirecting an air interface connection between systems is provided by an embodiment of the present invention, where the UE is redirected from the UMTS system to the LTE system, that is, the first standard network device is an RNC, and the second standard network device is used.
  • the first standard cell is a UMTS cell
  • the second standard cell is an LTE cell, as described below.
  • the UE initiates a service in the UMTS cell, and sends a Radio Resource Control (RRC) connection request message to the RNC.
  • RRC Radio Resource Control
  • the connection request message includes the service type indication information, and the service type indication information is used to indicate the type of the service initiated by the UE, which may be a CS service, a packet switched (PS) service, or Short messages, faxes, etc.
  • the service type indication information is used to indicate the type of the service initiated by the UE, which may be a CS service, a packet switched (PS) service, or Short messages, faxes, etc.
  • the RNC receives the RRC connection request message, and obtains a type of the service initiated by the UE.
  • step 203 is performed.
  • the preset service type refers to a service type that is not provided by the RNC, and may include one or more service types, which may be obtained through configuration information, or may be preset in the RNC. For example, if it is set that the RNC does not provide the PS service, when the type of the service initiated by the UE is the PS service, step 203 is performed.
  • step 203 is directly executed.
  • the service type of the second system cell restriction may be added in step 202, where the type of the service initiated by the UE belongs to the service type restricted by the first standard cell, and the When the type of the service initiated by the UE does not belong to the service type restricted by the second standard cell, the execution step Step 203.
  • the obtaining of the service type restricted by the second standard cell may be obtained by sending a message or according to preset configuration information.
  • the RNC acquires load information of an LTE cell, and performs a redirection decision according to the load information of the LTE cell.
  • the RNC can obtain the load information of the LTE cell through the network management center.
  • the real-time interaction of the load information can also be implemented through the signaling interaction with the eNB.
  • the RNC and the eNB forward through the core network. Load request messages and load report messages to implement real-time interaction of load information.
  • the LTE cell may be obtained by using configuration information, for example, may be obtained by using the configured neighbor cell information, or may be obtained by querying a pre-stored cell coverage relationship table, where no limitation is imposed; Ensuring that the UE maintains the continuity of the service and the quality of the service after being redirected from the first-standard cell to the second-standard cell, and the coverage area of the LTE cell may be the same as the coverage area of the UMTS cell, that is, the same area is covered. Or, the coverage of the LTE cell includes a coverage of the UMTS cell.
  • the performing the redirection decision according to the load information of the LTE cell may specifically adopt the following two modes:
  • Manner 1 When the load of the LTE cell is less than a first threshold, determining to redirect the UE to the LTE cell.
  • Mode 2 When the load of the UMTS cell is greater than the load of the LTE cell, and the difference between the load of the UMTS cell and the load of the LTE cell is greater than a second threshold, determine that the UE is heavy Directed to the LTE cell.
  • the first threshold and the second threshold may be configured according to a load situation or a user requirement; the load may be a traffic volume of the PS service, or may be a sum of traffic of the PS service and the CS service. , there are no restrictions here.
  • the load of the UMTS cell is 3 Ireland
  • the load of the LTE cell is 1 Ireland
  • the second threshold is 1 Ireland
  • the difference is 2 Ireland
  • the difference is greater than the second threshold. Determining to redirect the UE to the LTE cell.
  • the RNC determines to redirect the UE to the LTE cell, send a notification message to the eNB, requesting the eNB to allocate a connection establishment parameter to the UE.
  • the method further includes:
  • the notification message is sent to the eNB.
  • connection request message in step 201 further includes the measurement information of the LTE cell measured by the UE, the selecting the weight in the LTE cell that meets the redirection decision according to the preset redirection target cell selection condition.
  • the targeted target cell includes:
  • one cell is selected as the redirection target cell in the at least one cell;
  • the redirection target cell selection fails.
  • connection establishment parameter For a description of the connection establishment parameter, refer to step 102.
  • notification message For related description of the notification message, refer to step 103, and the notification message includes the redirect target cell.
  • the eNB receives the notification message, obtains the redirect target cell, and allocates a connection establishment parameter to the UE in the redirect target cell.
  • connection establishment parameters For a description of the connection establishment parameters, refer to step 104.
  • the eNB After the eNB successfully allocates the connection establishment parameter to the UE, the eNB sends a response message carrying the connection establishment parameter to the RNC.
  • step 105 For a description of the response message, refer to step 105.
  • the eNB may send a message to notify the RNC that the connection establishment parameter allocation fails, or may not send any The message informs the RNC that there is no restriction here.
  • the RNC receives the response message, and sends an RRC Connection Setup message to the UE, where the RRC Connection Setu message carries the connection establishment parameter.
  • the UE receives the RRC Connection Setup message, and obtains the connection establishment parameter.
  • the UE sends an RRC Connection Complete (RRC Connection Complete) message to the eNB according to the connection establishment parameter, and completes establishing a connection with the redirect target cell.
  • RRC Connection Complete RRC Connection Complete
  • step 202 when the RRC connection request message further includes an inter-system connection redirection flag for indicating whether the UE supports inter-system connection redirection, the method further includes:
  • the RNC determines the inter-system connection redirection flag.
  • the inter-system connection redirection flag indicates that the UE supports inter-system connection redirection
  • step 203 is performed.
  • the capability of the UE is directly determined, which avoids excessive signaling interaction and saves signaling overhead.
  • step 202 when the type of the service initiated by the UE belongs to the RNC does not provide the service type, the RNC determines to perform the redirection process on the UE, directly performs step 204, cancels the judgment of the load, saves signaling interaction between the systems, and further shortens the redirection decision time. Reduce call delay and improve user experience.
  • the first-standard network device performs a redirection decision immediately after receiving the connection request message sent by the UE, and the connection establishment process between the UE and the first-standard network device is omitted; After the decision is made to perform the redirection process on the UE, the sending the notification message triggers the second-standard network device to allocate a connection establishment parameter to the UE in the redirect target cell, so that the UE can establish the parameter directly according to the allocated connection.
  • the two-standard network device is connected, and the second-standard cell is not required to be re-selected, thereby effectively reducing the signaling interaction between the first-standard network device and the second-standard network device and the UE, saving signaling overhead, shortening the connection establishment delay, and improving User experience.
  • the first-standard network device performs a redirection decision according to the load information of the second-standard cell, thereby avoiding the negative The load problem caused the call to fail, which played a role in sharing the load.
  • a method for redirecting air interface connection between systems is provided by an embodiment of the present invention, where the UE is redirected from the LTE system to the UMTS system, that is, the first standard network device is an eNB, and the second standard network device is used.
  • the first standard cell is an LTE cell
  • the second standard cell is a UMTS cell, as described below.
  • the UE initiates a service in the LTE cell, and sends an RRC connection request message to the eNB, where the RRC connection request message carries measurement information of the UMTS cell measured by the UE.
  • the UMTS cell is consistent with the description of the second standard cell in step 101.
  • the measurement information of the UMTS cell may include the signal strength and/or signal quality of the UMTS cell measured by the UE.
  • the eNB receives the RRC connection request message, and obtains a type of the service initiated by the UE, and when the type of the service is a preset service type, step 303 is performed.
  • the preset service type may be a service type that is not provided by the eNB. For related description, refer to step 202.
  • step 302 is optional.
  • the service type restriction may be canceled, and step 303 is directly performed.
  • step 202 For a description of the service restrictions of the second-standard cell, see step 202.
  • the eNB acquires load information of the UMTS cell, and performs a redirection decision according to the load information of the UMTS cell.
  • the eNB may acquire the load information of the UMTS cell through the network management center.
  • the real-time interaction of the load information may also be implemented through signaling interaction between the RNC and the eNB.
  • the redirection decision is performed according to the load information of the UMTS cell, that is, the redirection decision is performed according to the load information of the second standard cell, and the following two methods may be used:
  • Manner 1 When the load of the second standard cell is less than the first threshold, determining to redirect the UE to the second standard cell.
  • the first threshold and the second threshold may be configured according to a load situation or a user requirement; the load may be a traffic volume of the PS service, or may be a sum of traffic of the PS service and the CS service. , there are no restrictions here.
  • the eNB determines to re-determine the UE to the UMTS cell, send a notification message to the RNC, requesting the RNC to allocate a connection establishment parameter to the UE.
  • the notification message includes the measurement information of the UMTS cell measured by the UE, and may further include a UMTS cell that satisfies the redirection decision.
  • a UMTS cell that satisfies the redirection decision For the related description of the second-standard cell that meets the redirection decision, refer to step 103.
  • the RNC receives the notification message, obtains measurement information of the UMTS cell, and selects a redirect target cell according to the measurement information of the UMTS cell.
  • Determining, according to the measurement information of the UMTS cell, the retargeting the cell includes: acquiring a UMTS cell that satisfies a redirection decision;
  • connection establishment parameter is not allocated.
  • the UMTS cell that satisfies the redirection decision may be obtained according to the information carried in the notification message, and may also be obtained according to the source of the notification message; the preset condition may be the signal strength in the measurement information or The signal quality can also be a combination of the two, which is not limited here.
  • the preset condition is the cell with the highest signal strength
  • the UMTS cell with the highest signal strength is selected in the UMTS cell that meets the redirection decision, and the cell with the strongest signal strength is redirected.
  • Target cell when the preset condition is a preset quality threshold, it is satisfied A cell that meets the preset quality threshold is selected in the UMTS cell of the redirection decision, and one cell is selected as the redirection target cell in the cell that meets the preset quality threshold.
  • the RNC may send a message notification.
  • the eNB fails to allocate the connection establishment parameter, and may not notify the eNB by sending any message, and no limitation is made here.
  • Selecting the redirection target cell according to the measurement information can avoid selecting a cell with poor signal condition as the redirection target cell, thereby avoiding the call quality degradation caused by the signal condition difference, or even dropping the call; further, selecting the redirection target according to the measurement information
  • the cell can also avoid redirecting the UE to a cell that cannot cover its location, thereby avoiding dropped calls and improving user experience.
  • the RNC After the RNC successfully allocates a connection establishment parameter to the UE in the redirect target cell, the RNC sends a response message carrying the connection establishment parameter to the eNB.
  • connection establishment parameter For a description of the connection establishment parameter, refer to step 102.
  • response message For a description of the response message, refer to step 105.
  • the RNC may send a message to notify the eNB that the connection establishment parameter allocation fails, and may not notify the eNB by sending any message, limit.
  • the eNB receives the response message, and sends an RRC Connection Setup message to the UE, where the RRC Connection Setu message carries the connection establishment parameter.
  • the UE receives the RRC Connection Setup message, and obtains the connection establishment parameter.
  • the UE sends an RRC Connection Complete message to the RNC according to the connection establishment parameter, and completes establishing a connection with the redirect target cell.
  • the step 302 further includes: The eNB determines the inter-system connection redirection flag, and when the inter-system connection redirection flag indicates that the UE supports inter-system connection redirection, step 303 is performed.
  • the eNB after receiving the RRC connection request message sent by the UE, the eNB directly determines the support capability of the inter-system connection redirection of the UE, and can avoid unnecessary between the systems when the UE does not support inter-system connection redirection. Signaling interaction, saving signaling overhead.
  • the first-standard network device performs a redirection decision immediately after receiving the connection request message sent by the UE, and the connection establishment process between the UE and the first-standard network device is omitted, and the UE re-selects the second.
  • the process of the system cell at the same time, the redirection decision according to the load avoids the call failure due to the load problem, and plays the role of sharing the load; further, after determining that the UE is redirected, determining the weight according to the measurement information Orienting the target cell, avoiding the communication quality or the call drop problem caused by the problem of the coverage or the signal quality, the signal strength, etc., further improving the user sense.
  • the system provides an air interface connection redirection between the systems.
  • the first-standard network device for example, the first-standard network device may be an RNC or an eNB, and includes a receiving unit 401, a redirection determining unit 402, a sending unit 403, and a forwarding unit 404, which may be used to perform the method shown in FIG.
  • the method embodiment is specifically as follows.
  • the receiving unit 401 is configured to receive a connection request message sent by the user equipment UE in the first standard cell;
  • the redirection decision unit 402 is configured to perform a redirection decision after the receiving unit 401 receives the connection request message;
  • the sending unit 403 is configured to send a notification message requesting the second standard network device to be the UE after the redirection determining unit 402 determines to redirect the UE to a second standard cell managed by the second standard network device. Allocating connection establishment parameters;
  • the forwarding unit 404 is configured to receive the second mode network device that is requested by the sending unit 403, and allocate a connection establishment parameter to the UE, and send the connection establishment parameter to the UE, so that the UE is configured according to the The connection establishment parameter establishes a connection with the second standard network device.
  • the notification message, the connection establishment parameter, the second standard cell, and the second standard network device are consistent with the related description in the embodiment shown in FIG. 1.
  • the first mode network device is configured to perform the method embodiment shown in FIG. 2, where the redirection determining unit 402 is further configured to:
  • the redirection determining unit 402 is further configured to:
  • the redirection decision unit 402 is further configured to:
  • the load information of the second standard cell is obtained, and the redirection decision is performed according to the load information of the second standard cell.
  • the redirection decision unit 402 is further configured to: Determining, according to the service type indication information, a type of the service initiated by the UE; when the type of the service initiated by the UE is a preset service type, determining to redirect the UE to the second standard cell.
  • step 101 For the related description of the service type indication information, refer to step 101.
  • step 202 For related descriptions of the preset service type, refer to step 202.
  • the redirection determining unit 402 is further configured to:
  • the redirection target cell selection fails, and the redirection process is not performed.
  • the first-standard network device when the connection request message includes a connection redirection flag bit for indicating whether the UE supports inter-system connection redirection, the first-standard network device further includes:
  • the UE support capability determining unit 405 is configured to obtain the connection redirection flag bit in the connection request message received by the receiving unit 401, and when the connection redirection flag bit indicates that the UE supports inter-system connection redirection The redirection decision unit 402 is notified to perform a redirection decision.
  • the first-standard network device immediately performs a redirection decision after receiving the connection request message sent by the UE, and the connection establishment process between the UE and the first-standard network device is omitted; After determining that the UE is redirected, the sending the notification message triggers the second-standard network device to allocate a connection establishment parameter to the UE in the redirect target cell, so that the UE can directly establish a parameter according to the allocated connection.
  • the network device is connected, and the second-standard cell is not required to be re-selected, thereby effectively reducing the signaling interaction between the first-standard network device and the second-standard network device and the UE, saving signaling overhead, shortening the connection establishment delay, and improving the user.
  • the sending the notification message triggers the second-standard network device to allocate a connection establishment parameter to the UE in the redirect target cell, so that the UE can directly establish a parameter according to the allocated connection.
  • the network device is connected, and the second-standard cell is not required to be re-selected, thereby
  • the second system network device may be an RNC or an eNB, or may be a base station controller (BSC), including a receiving unit 601, an allocating unit 602, and a sending unit 603, corresponding to FIG.
  • BSC base station controller
  • the receiving unit 601 is configured to receive a notification message sent by the first standard network device.
  • the allocating unit 602 is configured to allocate a connection establishment parameter to the user equipment UE after the receiving unit 601 receives the notification message;
  • a sending unit 603, configured to send, after the allocation unit 602 successfully allocates a connection establishment parameter to the UE, a response message carrying the connection establishment parameter to the first standard network device, so that the first standard The network device sends the connection establishment parameter to the UE.
  • the first mode network device, the notification message, the response message, and the connection establishment parameter are consistent with the related description in the embodiment shown in FIG. 1.
  • the second standard network device may be used to perform the embodiment described in FIG. 3, when the notification message includes measurement information of a second standard cell, the second standard network
  • the equipment also includes:
  • the obtaining unit 704 is configured to acquire measurement information of the second system cell in the notification message received by the receiving unit 701.
  • the selecting unit 705 is configured to select, according to the measurement information of the second standard cell acquired by the acquiring unit 704, a redirect target cell, and notify the allocation unit 702 in the redirect target cell after selecting the redirect target cell. And assigning the connection establishment parameter to the UE.
  • the second-standard network device after receiving the notification message, allocates a connection establishment parameter to the UE, and after the connection establishment parameter is successfully allocated, sends a response message carrying the connection establishment parameter to the first standard.
  • a network device to enable the first-standard network device to notify the UE of the connection establishment parameter, reduce signaling interaction between systems, between the system and the UE, save signaling overhead, shorten connection establishment delay, and improve User experience.
  • the user equipment of the inter-system air interface connection redirection is provided by the embodiment of the present invention, where the user equipment includes a sending unit 801, a receiving unit 802, and a connection establishing unit 803, which can be used for
  • the embodiment shown in Fig. 1 is executed as follows.
  • a sending unit 801 configured to send a connection request message to the first-standard network device in the first-standard cell
  • the receiving unit 802 is configured to receive a connection setup message sent by the first standard network device, where the connection setup message carries a connection establishment parameter allocated by the second standard network device to the UE;
  • the connection establishing unit 803 is configured to obtain the connection establishment parameter according to the receiving unit 802, and establish a connection with the second standard network device according to the connection establishment parameter.
  • the first standard network device, the second standard network device, the first standard cell, and the connection establishment parameters are consistent with the related description in the embodiment shown in FIG. 1.
  • the user equipment further includes:
  • the measuring unit 804 is configured to measure measurement information of the second-standard cell, and send the measurement information, so that the sending unit 801 sends the connection request message to the first-standard network device.
  • the related description of the second standard cell is the same as that in step 101.
  • the user equipment after receiving the connection establishment parameter, the user equipment establishes a connection with the second standard network device according to the connection establishment parameter, reduces signaling interaction between the system, the system and the UE, saves signaling overhead, and shortens the connection. Establish delays and enhance user experience.
  • a system for redirecting air interface connections between systems is provided in the embodiment of the present invention, where the system includes the first standard network device shown in FIG. 4 or FIG. 5, and the first device shown in FIG. 6 or FIG. A two-standard network device, and the user equipment shown in FIG. 8 or FIG.
  • this embodiment provides a first-standard network device for redirecting air interface connections between systems.
  • the first-standard network device may be an RNC or an eNB, and includes: a receiver 1101, a processor 1102, and The transmitter 1103, the first system network device can be used to perform the embodiment shown in FIG. 1, as described below.
  • the receiver 1101 is configured to receive a connection request message sent by the user equipment UE in the first standard cell;
  • the processor 1102 is configured to: after the receiver 1301 receives the connection request message, perform a redirection decision;
  • the transmitter 1103 is configured to: after the processor determines to redirect the UE to the second-standard cell managed by the second-standard network device, send a notification message requesting the second-standard network device to allocate a connection establishment for the UE Parameter
  • the receiver 1101 is further configured to receive a response message that is sent by the second standard network device and that carries the connection establishment parameter.
  • the transmitter 1103 is further configured to send the connection establishment parameter to the UE, so that the UE establishes a connection with the second standard network device according to the connection establishment parameter.
  • the notification message, the second standard cell, the second standard network device, and the connection establishment parameter are consistent with the related description of the embodiment shown in FIG.
  • the first mode network device may be used to perform the method in the embodiment shown in FIG. 2, where the processor 1102 is further configured to:
  • the processor 1102 is further configured to:
  • the type of the service initiated by the UE is a preset service type
  • determining to redirect the UE to the second standard cell For the related description of the service type indication information, refer to step 101.
  • the preset service type For related descriptions of the preset service type, refer to step 202.
  • the processor 1102 is further configured to:
  • the processor 1102 is further configured to:
  • the redirection target cell selection fails, and the redirection process is not performed.
  • the processor 1102 is further configured to:
  • connection redirection flag bit in the connection request message, and performing a redirection decision when the connection redirection flag bit indicates that the UE supports inter-system connection redirection.
  • the first-standard network device immediately performs a redirection decision after receiving the connection request message sent by the UE, and the connection establishment process between the UE and the first-standard network device is omitted; After determining that the UE is redirected, the sending the notification message triggers the second-standard network device to allocate a connection establishment parameter to the UE in the redirect target cell, so that the UE can directly establish a parameter according to the allocated connection.
  • the standard network device is connected, and the second standard cell is not required to be reselected, thereby effectively reducing the first-standard network device and the second-standard network device and the UE. Signaling interaction saves signaling overhead, shortens connection establishment delay, and improves user experience.
  • an example of the present invention provides a second-standard network device for inter-system air interface connection redirection.
  • the second-standard network device may be an RNC or an eNB, and includes: a receiver 1201 and a processor 1202. And the transmitter 1203 can be used to execute the embodiment shown in FIG. 1, as described below.
  • the receiver 1201 is configured to receive a notification message sent by the first standard network device.
  • the processor 1202 is configured to: after the receiver 1201 receives the notification message, allocate a connection establishment parameter to the user equipment UE;
  • a transmitter 1203, configured to send, after the processor 1202 successfully allocates a connection establishment parameter to the UE, a response message carrying the connection establishment parameter to the first standard network device, so that the first standard network device Sending the connection establishment parameter to the UE.
  • the first mode network device, the notification message, the response message, and the connection establishment parameter are consistent with the related description in the embodiment shown in FIG. 1.
  • the second mode network device may be used to perform the embodiment shown in FIG. 3.
  • the processor 1202 is further configured to:
  • the second-standard network device after receiving the notification message, allocates a connection establishment parameter to the UE, and after the connection establishment parameter is successfully allocated, sends a response message carrying the connection establishment parameter to the first-standard network device. And causing the first-standard network device to notify the UE of the connection establishment parameter, which reduces signaling interaction between systems, between the system and the UE, saves signaling overhead, shortens connection establishment delay, and improves user experience.
  • an embodiment of the present invention provides an inter-system air interface connection redirected user equipment, including: a transmitter 1301, a receiver 1302, and a processor 1303, which can be used to perform the implementation shown in FIG.
  • a transmitter 1301, a receiver 1302, and a processor 1303, which can be used to perform the implementation shown in FIG.
  • the details are as follows.
  • a transmitter 1301, configured to send a connection request message to the first standard network device in the first standard cell;
  • the receiver 1302 is configured to receive, by the first standard network device, a connection establishment message that carries a connection establishment parameter allocated by the second standard network device to the UE.
  • the processor 1303 is configured to obtain, in the connection setup message received by the receiver 1302, the connection establishment parameter, and establish a connection with the second standard network device according to the connection establishment parameter.
  • the first standard network device, the second standard network device, the first standard cell, and the connection establishment parameters are consistent with the related description in the embodiment shown in FIG. 1.
  • the receiver 1302 is further configured to receive a downlink signal of the second standard cell, where the processor 1303 is further configured to:
  • the related description of the second standard cell is the same as that in step 101.
  • the user equipment after receiving the connection establishment parameter, the user equipment establishes a connection with the second standard network device according to the connection establishment parameter, reduces signaling interaction between the system, the system and the UE, saves signaling overhead, and shortens the connection. Establish delays and enhance user experience.
  • a system for redirecting air interface connections between systems according to an embodiment of the present invention where the system includes
  • the first-standard network device shown in Fig. 11 The first-standard network device shown in Fig. 11, the second-standard network device shown in Fig. 12, and the user device shown in Fig. 13.
  • the foregoing program may be stored in a computer readable storage medium, and when executed, the program includes The foregoing steps of the method embodiment; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Abstract

本发明公开了一种系统间空口连接重定向的方法、设备和系统。该方法包括:第一制式网络设备接收用户设备UE在第一制式小区内发送的连接请求消息,进行重定向判决;所述第一制式网络设备在确定将所述UE重定向到第二制式网络设备管理的第二制式小区后,发送通知消息请求所述第二制式网络设备为所述UE分配连接建立参数;所述第一制式网络设备接收所述第二制式网络设备发送的携带有所述连接建立参数的响应消息,并将所述连接建立参数发送给所述UE,以使得所述UE根据所述连接建立参数与所述第二制式网络设备建立连接。采用本发明实施例,能够在重定向过程中节省信令开销,缩短连接建立时延,提升用户感受。

Description

系统间空口连接重定向的方法、 设备和系统 技术领域
本发明涉及移动通信系统, 尤其涉及一种系统间空口连接重定向的方法、 设备和系统。 背景技术
随着移动通信技术的迅猛发展,长期演进( Long Term Evolution,简称 LTE ) 通信系统在全球范围内得到了推广应用。 同时, 3G系统如通用移动通信系统 (Universal Mobile Telecommunications System,简称 UMTS)经过了长期的建设和 优化, 其覆盖已经相当完备且性能完善, 在一段时间内 LTE和其他制式的系统 将长期共存。
在这种多制式共存的情况下,基于对电路交换(Circuit Switched, 简称 CS ) 业务投资的保护和 LTE/演进的分组包核心网( Evolved Packet Core, 简称 EPC ) 的部署策略, 运营商会釆用原有的 CS域语音方案来提供语音服务, 而 LTE系 统仅用于处理数据业务, 因此, LTE系统覆盖下的用户设备(User equipment, 简称 UE )在发起 CS业务时会切换到 CS网络中完成。 在现有技术中, 当不同 制式系统共存时, 实现业务切换所釆用的重定向方法较为复杂, 包括: UE 首先与第一制式系统建立连接, 并在连接完成后进行重定向判决; 当确定将 所述 UE重定向到第二制式系统时, 释放所述 UE与第一制式系统的连接; 所述 UE重新选择一个第二制式小区驻留, 然后与第二制式系统建立连接。
在上述现有技术中的重定向方法, 信令交互频繁, 操作流程复杂, 耗费时 间长, 从而导致呼叫建立时延较大, 影响用户体验。
发明内容
本发明实施例提供一种系统间空口连接重定向的方法、 设备和系统, 能够 在重定向过程中减小系统间互操作的时延。
本发明的第一个方面提供了一种系统间空口连接重定向的方法, 包括: 第 一制式网络设备接收用户设备 UE在第一制式小区内发送的连接请求消息, 进 行重定向判决; 所述第一制式网络设备在确定将所述 UE重定向到第二制式网 络设备管理的第二制式小区后, 发送通知消息请求所述第二制式网络设备为所 述 UE分配连接建立参数; 所述第一制式网络设备接收所述第二制式网络设备 发送的携带有所述连接建立参数的响应消息, 并将所述连接建立参数发送给所 述 UE,以使得所述 UE根据所述连接建立参数与所述第二制式网络设备建立连 接。
结合第一个方面, 在第一个方面的第一种实现方式中, 所述进行重定向判 决包括: 获取所述第二制式小区的负载信息, 并根据所述第二制式小区的负载 进行重定向判决。
结合第一个方面的第一种实现方式, 在第一个方面的第二种实现方式中, 所述进行重定向判决包括: 当所述第二制式小区的负载小于第一阔值时, 确定 将所述 UE重定向到所述第二制式小区; 或者, 当所述第一制式小区的负载大 于所述第二制式小区的负载, 且所述第一制式小区的负载与所述第二制式小区 的负载之间的差值大于第二阔值时, 确定将所述 UE重定向到所述第二制式小 区。
结合第一个方面的第一种实现方式, 或者第一个方面的第二种实现方式, 在第一个方面的第三种实现方式中, 当所述连接请求消息包含业务类型指示信 息时, 所述业务类型指示信息用于指示所述 UE发起的业务的类型, 在所述获 取所述第二制式小区的负载信息之前, 还包括: 根据所述业务类型指示信息, 获得所述 UE发起的业务的类型; 当所述 UE发起的业务的类型为预设的业务 类型时, 获取所述第二制式小区的负载信息, 根据所述第二制式小区的负载信 息进行重定向判决。
结合第一个方面, 在第一个方面的第四种实现方式中, 当所述连接请求消 息包含业务类型指示信息时, 所述业务类型指示信息用于指示所述 UE发起的 业务的类型的业务类型指示信息, 所述进行重定向判决包括: 根据所述业务类 型指示信息, 获得所述 UE发起的业务的类型; 当所述 UE发起的业务的类型 为预设的业务类型时, 确定将所述 UE重定向到所述第二制式小区。
结合第一个方面的第一种实现方式, 或者第一个方面的第二种实现方式, 或者第一个方面的第三种的实现方式, 或者第一个方面的第四种实现方式, 在 第一个方面的第五种实现方式中, 当满足重定向判决的第二制式小区个数为至 少一个时,在所述发送通知消息请求所述第二制式网络设备为所述 UE分配连接 建立参数之前, 还包括: 根据预先设置的重定向目标小区选择条件, 在所述满 足重定向判决的第二制式小区中选择重定向目标小区; 当所述重定向目标小区 选择成功时,发送所述通知消息请求所述第二制式网络设备为所述 UE分配连接 建立参数。
结合第一个方面的第五种实现方式, 在第一个方面的第六种实现方式中, 当所述连接请求消息包含所述 UE测量的所述第二制式小区的测量信息时, 所 述根据预先设置的重定向目标小区选择条件,在满足重定向判决的第二制式 小区中选择重定向目标小区包括:获得所述 UE测量的所述第二制式小区的测 量信息; 当满足重定向判决的第二制式小区中存在至少一个小区的测量信息满 足预设条件时, 在所述至少一个小区中选择一个小区作为重定向目标小区。
结合第一个方面或者第一个方面的第一种实现方式或者第二种实现方式或 者第三种实现方式或者第四种实现方式, 或者第五种实现方式, 或者第六种实 现方式, 在第一个方面的第七种实现方式中, 当所述连接请求消息包含用于指 示所述 UE是否支持系统间连接重定向的连接重定向标志位时, 在所述进行重 定向判决之前, 还包括: 获得所述连接重定向标志位; 在所述连接重定向标志 位指示所述 UE支持系统间连接重定向时, 进行重定向判决。
本发明第二个方面提供了一种系统间空口连接重定向的方法, 包括: 第二 制式网络设备接收第一制式网络设备发送的通知消息, 并为用户设备 UE分配 连接建立参数;所述第二制式网络设备在为所述 UE成功分配连接建立参数后, 发送携带有所述连接建立参数的响应消息给所述第一制式网络设备, 以使得所 述第一制式网络设备将所述连接建立参数发送给所述 UE。
结合第二个方面, 在第二个方面的第一种实现方式中, 当所述通知消息包 含第二制式小区的所述通知消息包含第二制式小区的测量信息时, 在所述第二 制式网络设备接收第一制式网络设备的通知消息之后, 还包括: 获取所述第二 制式小区的测量信息, 并根据所述第二制式小区的测量信息选择重定向目标小 区。
本发明第三个方面提供了一种系统间空口连接重定向的方法, 包括: 用户 设备 UE在第一制式小区内发送连接请求消息给第一制式网络设备; 所述 UE 接收所述第一制式网络设备发送的连接建立消息 , 所述连接建立消息携带第二 制式网络设备为所述 UE分配的连接建立参数; 所述 UE根据所述连接建立参 数, 与所述第二制式网络设备建立连接。
本发明第四个方面提供了一种系统间空口连接重定向的第一制式网络设 备, 包括: 接收单元, 用于接收用户设备 UE在第一制式小区内发送的连接请 求消息; 重定向判决单元, 用于在所述接收单元接收所述连接请求消息后, 进 行重定向判决; 发送单元, 用于在所述重定向判决单元确定将所述 UE重定向 到第二制式网络设备管理的第二制式小区后, 发送通知消息请求所述第二制式 网络设备为所述 UE分配连接建立参数; 转发单元, 用于接收所述第二制式网 络设备发送的携带有所述连接建立参数的响应消息, 并将所述连接建立参数发 送给所述 UE,以使得所述 UE根据所述连接建立参数与所述第二制式网络设备 建立连接。
结合第四个方面, 在本发明第四个方面的第一种实现方式中, 所述重定向 判决单元还用于: 获取所述第二制式小区的负载信息, 根据所述第二制式小区 的负载信息进行重定向判决; 当所述第二制式小区的负载小于第一阔值时, 确 定将所述 UE重定向到所述第二制式小区; 或者, 当所述第一制式小区的负载 大于所述第二制式小区的负载, 且所述第一制式小区的负载与所述第二制式小 区的负载之间的差值大于第二阔值时, 确定将所述 UE重定向到所述第二制式 小区。
结合第四个方面的第一种实现方式, 在第四个方面的第二种实现方式中, 当所述连接请求消息包含用于指示所述 UE发起的业务的类型的业务类型指示 信息时, 所述重定向判决单元还用于: 根据所述业务类型指示信息, 获得所述 UE发起的业务的类型; 当所述 UE发起的业务的类型为预设的业务类型时,获 取所述第二制式小区的负载信息, 根据所述第二制式小区的负载信息进行重定 向判决。
结合第四个方面的第一种实现方式, 在第四个方面的第三种实现方式中, 当所述连接请求消息包含用于指示所述 UE发起的业务的类型的业务类型指示 信息时, 所述重定向判决单元还用于: 根据所述业务类型指示信息, 获得所述 UE发起的业务的类型; 当所述 UE发起的业务的类型为预设的业务类型时,确 定将所述 UE重定向到所述第二制式小区。
结合第四个方面或者第四个方面的第一种实现方式, 或者第四个方面的第 二种实现方式, 或者第四个方面的第三种实现方式, 在第四个方面的第四种实 现方式中, 当满足重定向判决的第二制式小区个数为至少一个时, 所述重定向 判决单元还用于: 根据预先设置的重定向目标小区选择条件, 在满足重定向判 决的第二制式小区中选择重定向目标小区;当所述重定向目标小区选择成功时, 通知所述发送单元发送所述通知消息请求所述第二制式网络设备为所述 UE分 配连接建立参数。
结合第四个方面或者第四个方面的第四种实现方式, 在第四个方面的第五 种实现方式中, 当所述连接请求消息包含所述 UE测量的所述第二制式小区的 测量信息时, 所述重定向判决单元还用于: 获得所述 UE测量的所述第二制式 小区的测量信息; 当满足重定向判决的第二制式小区中存在至少一个小区的 测量信息满足预设条件时,在所述至少一个小区中选择一个小区作为重定向 目标小区, 通知发送单元发送所述通知消息。
结合第四个方面或者第四个方面的第一种实现方式, 或者第四个方面的第 二种实现方式, 或者第四个方面的第三种实现方式, 或者第四个方面的第四种 或第五种实现方式, 在第四个方面的第六种实现方式中, 当所述连接请求消息 包含用于指示所述 UE是否支持系统间连接重定向的连接重定向标志位时, 还 包括: UE支持能力判断单元, 用于在所述接收单元接收的连接请求消息中获 得所述连接重定向标志位, 并在所述连接重定向标志位指示所述 UE支持系统 间连接重定向时, 通知所述重定向判决单元进行重定向判决。
本发明第五个方面提供了一种系统间空口连接重定向的第二制式网络设 备, 包括: 接收单元, 用于接收第一制式网络设备发送的通知消息; 分配单元, 用于在所述接收单元接收所述通知消息后,为用户设备 UE分配连接建立参数; 发送单元, 用于在所述分配单元为所述 UE成功分配连接建立参数后, 发送携 带有所述连接建立参数的响应消息给所述第一制式网络设备, 以使得所述第一 制式网络设备将所述连接建立参数发送给所述 UE。
结合第五个方面, 在第五个方面的第一种实现方式中, 当所述通知消息包 含第二制式小区的测量信息时, 还包括: 获取单元, 用于在所述接收单元接收 的通知消息中获取所述第二制式小区的测量信息; 选择单元, 用于根据所述获 取单元获取的第二制式小区的测量信息选择重定向目标小区, 并在选定重定向 目标小区后通知所述分配单元在所述选定的重定向目标小区中为所述 UE分配 所述连接建立参数。
本发明的第六个方面提供了一种系统间空口连接重定向的用户设备,包括: 发送单元, 用于在第一制式小区内发送连接请求消息给第一制式网络设备; 接 收单元, 用于接收所述第一制式网络设备发送的连接建立消息, 所述连接建立 消息携带第二制式网络设备为所述 UE分配的连接建立参数; 连接建立单元, 用于在所述接收单元接收的所述连接建立消息中获得所述连接建立参数, 并根 据所述连接建立参数与所述第二制式网络设备建立连接。 结合第六个方面, 在第六个方面的第一种实现方式中, 所述用户设备还包 括: 测量单元, 用于测量第二制式小区的测量信息, 并将所述测量信息发送给 所述发送单元, 以使得所述发送单元通过所述连接请求消息发送给所述第一制 式网络设备。
本发明的第七个方面提供了一种系统间空口连接重定向的第一制式网络设 备, 所述第一制式网络设备包括: 接收器、 处理器和发射器; 所述接收器, 用 于接收用户设备 UE在第一制式小区内发送的连接请求消息; 所述处理器, 用 于在所述接收器接收所述连接请求消息后, 进行重定向判决; 所述发射器, 用 于在所述处理器确定将所述 UE重定向到第二制式网络设备管理的第二制式小 区后,发送通知消息请求所述第二制式网络设备为所述 UE分配连接建立参数; 所述接收器, 还用于接收所述第二制式网络设备发送的携带有所述连接建立参 数的响应消息; 所述发射器, 还用于将所述连接建立参数发送给所述 UE, 以 使得所述 UE根据所述连接建立参数与所述第二制式网络设备建立连接。
结合第七个方面,在第七个方面的第一种实现方式中,所述处理器还用于: 获取所述第二制式小区的负载信息, 并根据所述第二制式小区的负载信息进行 重定向判决; 当所述第二制式小区的负载小于第一阔值时, 确定将所述 UE重 定向到所述第二制式小区; 或者, 当所述第一制式小区的负载大于所述第二制 式小区的负载, 且所述第一制式小区的负载与所述第二制式小区的负载之间的 差值大于第二阔值时, 确定将所述 UE重定向到所述第二制式小区。
结合第七个方面, 在第七个方面的第二种实现方式中, 当所述连接请求消 息包含用于指示所述 UE发起的业务的类型的业务类型指示信息时, 所述处理 器还用于: 根据所述业务类型指示信息, 获得所述 UE发起的业务的类型; 当 所述 UE发起的业务的类型为预设的业务类型时, 确定将所述 UE重定向到所 述第二制式小区。
结合第七个方面, 或者第七个方面的第一种实现方式, 或者第七个方面的 第二种实现方式,在第七个方面的第三种实现方式中, 当满足重定向判决的第 二制式小区个数为至少一个时, 所述处理器还用于: 根据预先设置的重定向 目标小区选择条件,在满足重定向判决的第二制式小区中选择重定向目标小 区; 当所述重定向目标小区选择成功时, 发送所述通知消息请求所述第二制 式网络设备为所述 UE分配连接建立参数。
结合第七个方面的第三种实现方式, 在第七个方面的第四种实现方式中, 当所述连接请求消息包含所述 UE测量的所述第二制式小区的测量信息时, 所 述处理器还用于: 获得所述 UE测量的所述第二制式小区的测量信息; 当满足 重定向判决的第二制式小区中存在至少一个小区的测量信息满足预设条件 时, 在所述至少一个小区中选择一个小区作为重定向目标小区, 发送所述通 知消息。
结合第七个方面, 或者第七个方面的第一种实现方式, 或者第七个方面的 第二种实现方式, 或者第七个方面的第三种实现方式, 或者第四种实现方式, 在第七个方面的第五种实现方式中,当所述连接请求消息包含用于指示所述 UE 是否支持系统间连接重定向的连接重定向标志位时, 所述处理器还用于: 在所 述连接请求消息中获得所述连接重定向标志位, 并在所述连接重定向标志位指 示所述 UE支持系统间连接重定向时, 进行重定向判决。
本发明的第八个方面提供了一种系统间空口连接重定向的第二制式网络设 备, 所述第二制式网络设备包括: 接收器、 处理器和发射器; 接收器, 用于接 收第一制式网络设备发送的通知消息; 处理器, 用于在所述接收器接收所述通 知消息后, 为用户设备 UE分配连接建立参数; 发射器, 用于在处理器为所述 UE成功分配连接建立参数后, 发送携带有所述连接建立参数的响应消息给所 述第一制式网络设备, 以使得所述第一制式网络设备将所述连接建立参数发送 给所述 UE。
结合第八个方面, 在第八个方面的第一种实现方式中, 当所述通知消息包 含第二制式小区的测量信息时, 所述处理器还用于: 在所述接收器接收的通知 消息中, 获取所述第二制式小区的测量信息; 根据所述获取的第二制式小区的 测量信息选择重定向目标小区, 并在选定重定向目标小区后, 在所述选定的重 定向目标小区中为所述 UE分配所述连接建立参数。
本发明的第九个方面提供了一种系统间空口连接重定向的用户设备, 所述 用户设备包括: 发射器、 接收器和处理器; 发射器, 用于在第一制式小区内发 送连接请求消息给第一制式网络设备; 接收器, 用于接收所述第一制式网络设 备发送携带有第二制式网络设备为所述 UE分配的连接建立参数的连接建立消 息; 处理器, 用于在所述接收器接收的连接建立消息中, 获取所述连接建立参 数, 并根据所述连接建立参数与所述第二制式网络设备建立连接。
结合第九个方面, 在第九个方面的第一种实现方式中, 所述接收器还用于 接收第二制式小区的下行信号, 所述处理器还用于: 根据所述下行信号, 获得 所述第二制式小区的测量信息, 并将所述测量信息存放在所述连接请求消息中 通过所述发射器发送给所述第一制式网络设备。
由上述技术方案可知, 釆用本发明实施例, 第一制式网络设备在收到 UE 发送的连接请求消息后, 进行重定向判决, 并在确定将所述 UE重定向到第二 制式小区时, 通知第二制式网络设备为所述 UE分配连接建立参数, 将所述第 二制式网络设备反馈的连接建立参数通知所述 UE,使得所述 UE根据所述连接 建立参数与所述第二制式网络设备间建立连接, 减少了系统间、 系统与 UE间 的信令交互, 节省信令开销, 缩短连接建立时延, 提升用户感受。 附图说明
为了更清楚地说明本发明实施例中的技术方案, 下面将对实施例描述中所 需要使用的附图进行简单地介绍, 显而易见地, 下面描述中的附图是本发明的 一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下, 还可以根据这些附图获得其他的附图。
图 1为本发明实施例中一种系统间空口连接重定向方法的流程图; 图 2为本发明实施例中另一种系统间空口连接重定向方法的流程图; 图 3为本发明实施例中另一种系统间空口连接重定向方法的流程图; 图 4为本发明实施例中一种系统间空口连接重定向的第一制式网络设备的 结构示意图;
图 5为本发明实施例中另一种系统间空口连接重定向的第一制式网络设备 的结构示意图;
图 6为本发明实施例中一种系统间空口连接重定向的第二制式网络设备的 结构示意图;
图 7为本发明实施例中另一种系统间空口连接重定向的第二制式网络设备 的结构示意图;
图 8为本发明实施例中一种系统间空口连接重定向的用户设备的结构示意 图;
图 9为本发明实施例中另一种系统间空口连接重定向的用户设备的结构示 意图;
图 10为本发明实施例中一种系统间空口连接重定向的系统的结构示意图; 图 11为本发明实施例中一种系统间空口连接重定向的第一网络设备的结 构示意图;
图 12为本发明实施例中一种系统间空口连接重定向的第二网络设备的结 构示意图;
图 13为本发明实施例中一种系统间空口连接重定向的用户设备的结构示 意图。 具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行清 楚、 完整地描述, 显然, 所描述的实施例仅是本发明一部分实施例, 而不是全 部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做出创造性 劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。 如图 1所示, 本发明实施例提供的一种系统间空口连接重定向的方法, 具 体如下所述。
101、 用户设备 UE在第一制式小区内发送连接请求消息给第一制式网络设 备。
其中, 所述连接请求消息可以包含业务类型指示信息, 第二制式小区的测 量信息和连接重定向标志位中至少一种; 所述业务类型指示信息用于指示所述 UE发起的业务的类型; 所述连接重定向标志位用于指示所述 UE是否支持系统 间连接重定向。
其中, 所述第二制式小区与所述第一制式小区分别属于不同制式系统, 且 两者存在部分或者全部相同覆盖的区域, 可以根据配置信息获得, 例如, 可以 通过配置的相邻小区信息获得, 还可以通过预设的小区覆盖关系表来获得。
102、第一制式网络设备接收所述 UE在所述第一制式小区内发送的连接请 求消息, 进行重定向判决。
其中, 所述第一制式网络设备可以基站, 也可以^^站控制器, 例如, 可 以是 LTE系统中的演进型基站( Evolution NodeB, 简称 eNB ),还可以是 UMTS 系统中的无线网络控制器 (Radio Network Controller, 简称 RNC), 此处不进行限 制。
其中, 所述重定向判决具体可以根据 UE发起的业务的类型和 /或第二制式 小区的负载信息进行判决, 且在第一制式网络设备接收到所述连接请求消息时 进行的, 不执行 UE与第一制式网络设备的连接处理过程, 能够减小重定向引 起的时延。
103、所述第一制式网络设备在确定将所述 UE重定向到第二制式网络设备 管理的第二制式小区后, 发送通知消息请求所述第二制式网络设备为所述 UE 分配连接建立参数。
其中, 所述第二制式网络设备与所述第一制式网络设备分别属于不同制式 的系统, 例如, 当所述第一制式网络设备为 UMTS系统中的 RNC时, 所述第 二制式网络设备可以是 LTE系统中的 eNB , 也可以是 GSM系统中的基站控制 器; 当所述第一制式网络设备为 LTE系统中的基站时, 所述第二制式网络设备 可以是 UMTS系统中的 RNC。
其中, 所述通知消息用来请求第二制式网络设备为所述 UE分配连接建立 参数; 所述通知消息可以包含重定向目标小区, 或者满足重定向判决的第二制 式小区; 当所述连接请求消息包含第二制式小区的测量信息时, 所述通知消息 还可以包含所述第二制式小区的测量信息; 所述通知消息可以通过系统间的标 准接口进行传输, 例如, eNB和 RNC之间可以建立直接接口, 对于共站址的 eNB和 RNC , 也可以釆用内部接口进行传输。
其中, 所述连接建立参数包括信道资源信息, 还可以包括 UE临时标识, 非连续接收( Discontinuous Reception, 简称 DRX )周期系数, 信令承载建立信 息等; 所述 UE临时标识指的是第二制式网络设备为所述 UE分配的标识, 例 ^口, 无线网络临时标 i只 ( radio network temporary identifier, RNTI )„
其中, 所述第二制式小区的相关描述参见步骤 101。
可选的, 当满足重定向判决的第二制式小区个数为至少一个时, 在所述发 送通知消息之前, 还包括:
根据预先设置的重定向目标小区选择条件, 在满足重定向判决的第二制式 小区中选择重定向目标小区;
当所述重定向目标小区选择成功时, 发送所述通知消息请求所述第二制式 网络设备为所述 UE分配连接建立参数。
其中, 当根据 UE发起的业务的类型确定进行重定向处理时, 满足重定向 判决的第二制式小区指的是所述第二制式小区; 当根据所述第二制式小区的负 载信息确定进行重定向处理时, 满足重定向判决的第二制式小区指的是满足负 载重定向判决的第二制式小区。
其中 , 所述预先设置的重定向目标小区选择条件可以是负载或者频段信息 或者随机选择, 或者其结合, 例如, 选择负载最小的作为重定向目标小区; 此 外, 当步骤 101的连接请求消息包含第二制式小区的测量信息时, 所述预设置 的重定向目标小区选择条件还可以是第二制式小区的测量信息。
104、 所述第二制式网络设备接收所述第一制式网络设备发送的通知消息 , 并为所述 UE分配连接建立参数。
其中, 所述为所述 UE分配连接建立参数包括: 获取重定向目标小区; 在所 述重定向目标小区内为所述 UE分配连接建立参数。
其中, 所述获取重定向目标小区可以根据所述通知消息携带的信息获取, 还可以根据通知消息的来源获取, 例如, 当第一制式网络设备下仅有一个小区 时, 则当第二制式网络设备收到所述第一制式网络设备发送的通知消息时, 可 以根据预设的小区覆盖关系来获取所述重定向目标小区。
105、 所述第二制式网络设备在为所述 UE成功分配连接建立参数后, 发送 携带有所述连接建立参数的响应消息给所述第一制式网络设备。
其中, 所述响应消息用于将所述第二制式网络设备分配的连接建立参数发 送给第一制式网络设备, 以使得所述第一制式网络设备将所述连接建立参数发 送给所述 UE , 进一步使得所述 UE根据所述连接建立参数与第二制式网络设备 建立连接。
其中, 所述响应消息的发送可以通过系统间的标准接口进行传输, 具体参 见步骤 103中通知消息的相关描述。
106、所述第一制式网络设备接收所述第二制式网络设备发送的携带有所述 连接建立参数的响应消息, 并将所述连接建立参数发送给所述 UE。
其中,所述连接建立参数可以通过现有的连接建立消息发送给所述 UE, 以 使得所述 UE根据所述连接建立参数与所述第二制式网络设备建立连接。
107、 所述 UE接收所述第一制式网络设备发送的连接建立消息, 获取所述 连接建立参数。
108、所述 UE根据所述连接建立参数,与所述第二制式网络设备建立连接。 本实施例中, 第一制式网络设备在收到 UE发送的连接请求消息后立即进 行重定向判决, 省去了所述 UE与第一制式网络设备间的连接建立流程; 同时, 当重定向判决确定将所述 UE进行重定向处理后, 发送通知消息触发第二制式 网络设备在重定向目标小区中为所述 UE分配连接建立参数, 使得所述 UE能 够根据分配的连接建立参数直接与第二制式网络设备进行连接, 无需重选第二 制式小区, 有效减少了第一制式网络设备, 以及第二制式网络设备与 UE间的 信令交互, 节省信令开销, 缩短连接建立时延, 提升用户感受。
如图 2所示, 本发明实施例提供的一种系统间空口连接重定向的方法, 以 UE从 UMTS系统重定向到 LTE系统为例, 即第一制式网络设备为 RNC, 第二 制式网络设备为 eNB, 第一制式小区为 UMTS小区, 第二制式小区为 LTE小 区, 具体如下所述。
201、 UE在 UMTS 小区发起业务, 发送无线资源控制 (Radio Resource Control, 简称 RRC )连接请求消息给 RNC。
其中, 所述连接请求消息包含业务类型指示信息; 所述业务类型指示信息 用来指示所述 UE发起的业务的类型, 可以是 CS 业务、 分组交换(packet switched, 简称 PS )业务, 也可以是短消息、 传真等。
202、 所述 RNC接收所述 RRC连接请求消息, 获取所述 UE发起的业务的 类型, 当所述 UE发起的业务的类型为预设的业务类型时, 执行步骤 203。
其中,所述预设的业务类型指的是所述 RNC不提供的业务类型,可以包含 一种或多种业务类型,具体可以通过配置信息获得,还可以预先设置在 RNC内 部。 例如, 假设设置 RNC不提供 PS业务, 则当所述 UE发起的业务的类型为 PS业务时, 执行步骤 203。
需要说明的是, 在第一制式小区和第二制式小区对所提供的业务类型不存 在限制的情况下, 可以取消对业务类型的判断, 直接执行步骤 203。 如果第二 制式小区存在业务限制, 则可以在步骤 202中增加获取第二制式小区限制的业 务类型 , 当所述 UE发起的业务的类型属于所述第一制式小区限制的业务类型 , 且所述 UE发起的业务的类型不属于第二制式小区限制的业务类型时, 执行步 骤 203。 所述第二制式小区限制的业务类型的获取可以通过发送消息或者根据 预设的配置信息获取。
203、所述 RNC获取 LTE小区的负载信息,并根据所述 LTE小区的负载信 息进行重定向判决。
其中, 所述 RNC可以通过网管中心获取 LTE小区的负载信息; 也可以通 过和 eNB间的信令交互实现负载信息的实时交互, 例如, 在现有技术中, RNC 和 eNB之间通过核心网转发负载请求消息和负载报告消息来实现负载信息的实 时交互。
其中, 所述 LTE小区可以通过配置信息获得, 例如, 可以通过配置的相邻 小区信息获得, 还可以通过查询预存储的小区覆盖关系表来获得, 此处不进行 限制; 需要指出的是, 为了保证所述 UE在从第一制式小区重定向到第二制式 小区后保持业务的持续以及业务的质量, 所述 LTE小区的覆盖区域可以与所述 UMTS小区的覆盖区域相同, 即覆盖同一区域, 或者, 所述 LTE小区的覆盖范 围包括所述 UMTS小区的覆盖范围。
其中, 所述根据所述 LTE小区的负载信息进行重定向判决, 具体可以釆用 ^口下两种方式:
方式 1、 当所述 LTE小区的负载小于第一阔值时, 确定将所述 UE重定向 到所述 LTE小区。
方式 2、当所述 UMTS小区的负载大于所述 LTE小区的负载,且所述 UMTS 小区的负载与所述 LTE 小区的负载之间的差值大于第二阔值时, 确定将所述 UE重定向到所述 LTE小区。
其中, 所述第一阔值和第二阔值, 可以根据负载情况或者用户需要进行配 置; 所述负载, 可以是 PS业务的话务量, 也可以是 PS业务和 CS业务的话务 量总和, 此处不进行限制。
例如, 4叚设 UMTS小区的负载为 3个爱尔兰, LTE小区的负载为 1个爱尔 兰, 第二阔值为 1个爱尔兰, 则差值为 2个爱尔兰, 所述差值大于第二阔值, 确定将所述 UE重定向到所述 LTE小区。
204、 当所述 RNC确定将所述 UE重定向到所述 LTE小区时, 发送通知消 息给 eNB , 请求 eNB为所述 UE分配连接建立参数。
其中, 当满足重定向判决的 LTE小区个数为至少一个时, 在所述发送通知 消息给 eNB之前, 还包括:
根据预先设置的重定向目标小区选择条件, 在满足重定向判决的 LTE小区 中选择重定向目标小区;
当所述重定向目标小区选择成功时, 发送所述通知消息给 eNB。
其中, 当步骤 201中的连接请求消息还包含所述 UE测量的所述 LTE小区的 测量信息时, 所述根据预先设置的重定向目标小区选择条件, 在满足重定向判 决的 LTE小区中选择重定向目标小区包括:
获得所述 UE测量的所述 LTE小区的测量信息;
当满足重定向判决的 LTE小区中存在至少一个小区的测量信息满足预设条 件时, 在所述至少一个小区中选择一个小区作为重定向目标小区; 或者,
当所述满足重定向判决的 LTE小区的测量信息均不满足预设条件时, 所述 重定向目标小区选择失败。
其中, 所述连接建立参数的相关描述参见步骤 102; 所述通知消息的相关 描述参见步骤 103 , 且所述通知消息包含所述重定向目标小区。
205、 所述 eNB接收所述通知消息, 获取所述重定向目标小区, 并在所述 重定向目标小区内为所述 UE分配连接建立参数。
其中, 所述连接建立参数的相关描述参见步骤 104。
206、 所述 eNB在为所述 UE成功分配连接建立参数后, 向所述 RNC发送 携带有所述连接建立参数的响应消息。
其中, 所述响应消息的相关描述可以参见步骤 105。
需要指出的是, eNB在所述重定向目标小区内分配连接建立参数失败时, 所述 eNB可以发送消息通知 RNC连接建立参数分配失败, 也可以不发送任何 消息通知 RNC, 此处不予限制。
207、所述 RNC接收所述响应消息,并向所述 UE发送 RRC连接建立( RRC Connection Setup ) 消息, 所述 RRC Connection Setu 消息携带所述连接建立参 数。
208、 所述 UE接收所述 RRC Connection Setup消息, 获取所述连接建立参 数。
209、所述 UE根据所述连接建立参数发送 RRC连接完成( RRC Connection Complete ) 消息给所述 eNB, 完成与所述重定向目标小区的建立连接。
在一种实施场景下, 步骤 202中, 当所述 RRC连接请求消息还包括用于指 示所述 UE是否支持系统间连接重定向的系统间连接重定向标志位时,还包括:
RNC判断所述系统间连接重定向标志位, 当所述系统间连接重定向标志位 指示所述 UE支持系统间连接重定向时, 执行步骤 203。 在收到 UE的 RRC连 接请求消息后直接判断 UE的能力, 可以避免过多的信令交互, 节省信令开销。
在另一种实施场景下, 偏远地区或者人口密度小的地区, 话务量较少, 不 存在负载过重的问题, 因此, 在步骤 202中, 当所述 UE发起的业务的类型属 于所述 RNC不提供的业务类型时,所述 RNC确定将所述 UE进行重定向处理, 直接执行步骤 204, 取消了对负载的判断, 节省了系统间的信令交互, 进一步 缩短了重定向判决时间, 减小呼叫时延, 提升用户感受。
在本实施例中, 第一制式网络设备在收到 UE发送的连接请求消息后立即 进行重定向判决, 省去了所述 UE与第一制式网络设备间的连接建立流程; 同 时, 当重定向判决确定将所述 UE进行重定向处理后, 发送通知消息触发第二 制式网络设备在重定向目标小区中为所述 UE分配连接建立参数,使得所述 UE 能够根据分配的连接建立参数直接与第二制式网络设备进行连接, 无需重选第 二制式小区, 有效减少了第一制式网络设备, 以及第二制式网络设备与 UE间 的信令交互, 节省信令开销, 缩短连接建立时延, 提升用户感受。 此外, 第一 制式网络设备根据第二制式小区的负载信息, 进行重定向判决, 避免了由于负 载问题导致呼叫失败, 起到了分担负荷的作用。
如图 3所示, 本发明实施例提供的一种系统间空口连接重定向的方法, 以 UE从 LTE系统重定向到 UMTS系统为例, 即第一制式网络设备为 eNB, 第二 制式网络设备为 RNC, 第一制式小区为 LTE小区, 第二制式小区为 UMTS小 区, 具体如下所述。
301、 UE在 LTE小区发起业务,发送 RRC连接请求消息给 eNB,所述 RRC 连接请求消息中携带所述 UE测量的 UMTS小区的测量信息。
其中, 所述 UMTS小区与步骤 101中第二制式小区的相关描述一致; 所述 UMTS小区的测量信息可以包括所述 UE测量的 UMTS小区的信号强度和 /或信 号质量。
302、 所述 eNB接收所述 RRC连接请求消息, 获取所述 UE发起的业务的 类型, 并在所述业务的类型为预设的业务类型时, 执行步骤 303。
其中, 所述预设的业务类型可以是所述 eNB不提供的业务类型, 相关描述 参见步骤 202。
需要说明的是, 步骤 302是可选的, 当所述 LTE小区和 UMTS小区对所提 供的业务类型时不存在限制时, 则可以取消对业务类型的限制, 直接执行步骤 303。 第二制式小区存在业务限制的相关描述参见步骤 202。
303、 所述 eNB获取所述 UMTS小区的负载信息, 并根据所述 UMTS小区 的负载信息进行重定向判决。
需要指出的是, 所述 eNB可以通过网管中心获取所述 UMTS小区的负载 信息; 也可以通过 RNC和 eNB间的信令交互实现负载信息的实时交互。
其中, 所述根据所述 UMTS小区的负载信息进行重定向判决, 即根据所述 第二制式小区的负载信息进行重定向判决, 具体可以釆用如下两种方式:
方式 1、 当所述第二制式小区的负载小于第一阔值时,确定将所述 UE重定 向到所述第二制式小区。
方式 2、 当所述第一制式小区的负载大于所述第二制式小区的负载, 且所 述第一制式小区的负载与所述第二制式小区的负载之间的差值大于第二阔值 时, 确定将所述 UE重定向到所述第二制式小区。
其中, 所述第一阔值和第二阔值, 可以根据负载情况或者用户需要进行配 置; 所述负载, 可以是 PS业务的话务量, 也可以是 PS业务和 CS业务的话务 量总和, 此处不进行限制。
304、 当所述 eNB确定将所述 UE重定到所述 UMTS小区时, 发送通知消 息给 RNC, 请求 RNC为所述 UE分配连接建立参数。
其中, 所述通知消息包含所述 UE测量的 UMTS小区的测量信息, 还可以 包含满足重定向判决的 UMTS小区; 所述满足重定向判决的第二制式小区的相 关描述参见步骤 103。
305、 所述 RNC接收所述通知消息, 获取所述 UMTS小区的测量信息, 并 根据所述 UMTS小区的测量信息, 选择重定向目标小区。
其中, 所述根据所述 UMTS小区的测量信息, 确定重定向目标小区包括: 获取满足重定向判决的 UMTS小区;
当所述满足重定向判决的 UMTS小区中存在至少一个小区的测量信息满足 预设条件时 ,则在所述至少一个小区中选择一个作为重定向的目标 UMTS小区, 然后执行步骤 304; 或者,
当所述满足重定向判决的 UMTS小区的测量信息均不满足预设条件时, 则 不分配连接建立参数。
其中, 所述获取满足重定向判决的 UMTS小区可以根据所述通知消息携带 的信息获取, 还可以根据通知消息的来源获取重定向目标小区; 所述预设条件 可以是测量信息中的信号强度或者信号质量, 还可以是两者相结合, 此处不予 限制。
例如, 当所述预设条件为选择信号强度最大的小区时, 则在所述满足重定 向判决的 UMTS小区中筛选出一个信号强度最大的 UMTS小区,所述信号强度 最大的小区即为重定向目标小区; 当预设条件为预设的质量门限时, 则在满足 重定向判决的 UMTS小区中筛选出满足所述预设的质量门限的小区, 并在所述 满足预设的质量门限的小区内选择一个小区作为重定向目标小区。
需要指出的是, 当根据测量信息在所述满足重定向判决的 UMTS小区中无 法选择出重定向目标小区时, 例如, 出现信号质量均不满足预设条件的情况, 所述 RNC可以发送消息通知 eNB所述连接建立参数分配失败, 还可以不发送 任何消息通知 eNB, 此处不进行限制。 根据测量信息选择重定向目标小区, 能 够避免选择信号条件较差的小区作为重定向目标小区, 从而避免了因信号条件 差导致的通话质量下降, 甚至掉话; 此外, 根据测量信息选择重定向目标小区, 还能够避免将所述 UE重定向到无法覆盖其所在位置的小区, 从而避免掉话, 提升用户感受。
306、 所述 RNC在所述重定向目标小区内为所述 UE成功分配连接建立参 数后, 向所述 eNB发送携带有所述连接建立参数的响应消息。
其中, 所述连接建立参数的相关描述参见步骤 102; 所述响应消息的相关 描述参见步骤 105。
需要指出的是, RNC在所述重定向目标小区内分配连接建立参数失败时, 所述 RNC可以发送消息通知 eNB所述连接建立参数分配失败, 还可以不发送 任何消息通知 eNB, 此处不予限制。
307、所述 eNB接收所述响应消息,并向所述 UE发送 RRC Connection Setup 消息, 所述 RRC Connection Setu 消息携带所述连接建立参数。
308、 所述 UE接收所述 RRC Connection Setup消息, 获取所述连接建立参 数。
309、 所述 UE根据所述连接建立参数发送 RRC Connection Complete消息 给所述 RNC, 完成与所述重定向目标小区的建立连接。
在一种实施场景下, 当所述 RRC连接请求消息还包括用于指示所述 UE是 否支持系统间连接重定向的系统间连接重定向标志位时, 在上述步骤 302中还 包括: eNB判断所述系统间连接重定向标志位, 当所述系统间连接重定向标志位 指示所述 UE支持系统间连接重定向时, 执行步骤 303 ,
在上述实施场景下, eNB在收到 UE发送的 RRC连接请求消息后直接判断 UE的系统间连接重定向的支持能力,可以避免在 UE不支持系统间连接重定向 的情况下系统间进行不必要的信令交互, 节省信令开销。
在本实施例中, 第一制式网络设备在收到 UE发送的连接请求消息后立即 进行重定向判决, 省去了所述 UE与第一制式网络设备间的连接建立流程以及 UE重选第二制式小区的流程; 同时, 根据负载进行重定向判决, 避免了由于负 载问题导致呼叫失败, 起到了分担负荷的作用; 此外, 在确定将所述 UE进行 重定向处理后, 再根据测量信息确定重定向目标小区, 避免了由于覆盖或者信 号质量, 信号强度等问题导致的通信质量差或者掉话问题, 进一步提升用户感 如图 4所示, 本发明实施例提供的一种系统间空口连接重定向的第一制式 网络设备, 例如, 所述第一制式网络设备可以为 RNC或者 eNB, 包括接收单 元 401、 重定向判决单元 402、 发送单元 403和转发单元 404, 可以用于执行图 1所示的方法实施例, 具体如下所述。
接收单元 401 ,用于接收用户设备 UE在第一制式小区内发送的连接请求消 息;
重定向判决单元 402, 用于在所述接收单元 401接收所述连接请求消息后, 进行重定向判决;
发送单元 403 ,用于在所述重定向判决单元 402确定将所述 UE重定向到第 二制式网络设备管理的第二制式小区后, 发送通知消息请求所述第二制式网络 设备为所述 UE分配连接建立参数;
转发单元 404, 用于接收所述发送单元 403请求的所述第二制式网络设备 为所述 UE分配连接建立参数, 并将所述连接建立参数发送给所述 UE, 以使得 所述 UE根据所述连接建立参数与所述第二制式网络设备建立连接。 其中, 所述通知消息、 连接建立参数, 第二制式小区、 第二制式网络设备 与图 1所示实施例中的相关描述一致。
可选的, 所述第一制式网络设备用于执行图 2所示的方法实施例, 所述重 定向判决单元 402具体还用于:
获取所述第二制式小区的负载信息, 根据所述第二制式小区的负载信息进 行重定向判决;
当所述第二制式小区的负载小于第一阔值时, 确定将所述 UE重定向到所 述第二制式小区; 或者,
当所述第一制式小区的负载大于所述第二制式小区的负载, 且所述第一制 式小区的负载与所述第二制式小区的负载之间的差值大于第二阔值时, 确定将 所述 UE重定向到所述第二制式小区。
其中, 所述第一阔值和所述第二阔值, 以及负载的相关描述参见步骤 203。 可选的, 当满足重定向判决的第二制式小区个数为至少一个时, 所述重定 向判决单元 402还用于:
根据预先设置的重定向目标小区选择条件, 在满足重定向判决的第二制式 小区中选择重定向目标小区;
当所述重定向目标小区选择成功时, 通知所述发送单元发送所述通知消息 请求所述第二制式网络设备为所述 UE分配连接建立参数。
其中, 所述预先设置的重定向目标小区选择条件的相关描述参见步骤 103。 可选的, 当所述连接请求消息包含用于指示所述 UE发起的业务的类型的 业务类型指示信息时, 所述重定向判决单元 402具体还用于:
根据所述业务类型指示信息, 获得所述 UE发起的业务的类型;
当所述 UE发起的业务的类型为预设的业务类型时, 获取所述第二制式小 区的负载信息, 根据所述第二制式小区的负载信息进行重定向判决。
可选的, 当所述连接请求消息包含用于指示所述 UE发起的业务的类型的 业务类型指示信息时, 所述重定向判决单元 402具体还用于: 根据所述业务类型指示信息, 获得所述 UE发起的业务的类型; 当所述 UE发起的业务的类型为预设的业务类型时, 确定将所述 UE重定 向到所述第二制式小区。
其中, 所述业务类型指示信息的相关描述参见步骤 101 ; 所述预设的业务 类型的相关描述参见步骤 202。
可选的, 当所述连接请求消息包含所述 UE测量的所述第二制式小区的测 量信息时, 所述重定向判决单元 402具体还用于:
获得所述 UE测量的所述第二制式小区的测量信息;
当满足重定向判决的第二制式小区中存在至少一个小区的测量信息满足预 设条件时, 在所述至少一个小区中选择一个小区作为重定向目标小区, 通知发 送单元 403发送所述通知消息; 或者,
当所述满足重定向判决的 LTE小区的测量信息均不满足预设条件时, 所述 重定向目标小区选择失败, 不进行重定向处理。
可选的, 如图 5所示, 当所述连接请求消息包含用于指示所述 UE是否支 持系统间连接重定向的连接重定向标志位时, 所述第一制式网络设备还包括:
UE支持能力判断单元 405 ,用于在所述接收单元 401接收的连接请求消息 中获得所述连接重定向标志位, 并在所述连接重定向标志位指示所述 UE支持 系统间连接重定向时, 通知所述重定向判决单元 402进行重定向判决。
本实施例中, 第一制式网络设备在收到 UE发送的连接请求消息后立即进 行重定向判决, 省去了所述 UE与第一制式网络设备间的连接建立流程; 同时, 当重定向判决确定将所述 UE进行重定向处理后, 发送通知消息触发第二制式 网络设备在重定向目标小区中为所述 UE分配连接建立参数, 使得所述 UE能 够根据分配的连接建立参数直接与第二制式网络设备进行连接, 无需重选第二 制式小区, 有效减少了第一制式网络设备, 以及第二制式网络设备与 UE间的 信令交互, 节省信令开销, 缩短连接建立时延, 提升用户感受。
如图 6所示, 本发明实施例提供的一种系统间空口连接重定向的第二制式 网络设备, 例如, 所述第二制式网络设备可以为 RNC或者 eNB, 还可以是基 站控制器( base station controller, 简称 BSC ), 包括接收单元 601、分配单元 602 和发送单元 603 , 对应于图 1所示的方法实施例, 具体如下所述。
接收单元 601 , 用于接收第一制式网络设备发送的通知消息;
分配单元 602, 用于在所述接收单元 601接收所述通知消息后, 为用户设 备 UE分配连接建立参数;
发送单元 603 ,用于在所述分配单元 602为所述 UE成功分配连接建立参数 后, 发送携带有所述连接建立参数的响应消息给所述第一制式网络设备, 以使 得所述第一制式网络设备将所述连接建立参数发送给所述 UE。
其中, 所述第一制式网络设备, 通知消息, 响应消息, 以及连接建立参数 与图 1所示实施例中的相关描述一致。
可选的, 如图 7所示, 所述第二制式网络设备可以用于执行图 3所述的实 施例, 当所述通知消息包含第二制式小区的测量信息时, 所述第二制式网络设 备还包括:
获取单元 704, 用于在所述接收单元 701接收的通知消息中获取所述第二 制式小区的测量信息;
选择单元 705, 用于根据所述获取单元 704获取的第二制式小区的测量信 息选择重定向目标小区, 并在选定重定向目标小区后通知所述分配单元 702在 所述重定向目标小区中为所述 UE分配所述连接建立参数。
本实施例中, 第二制式网络设备在接收到通知消息后, 给 UE分配连接建 立参数, 并在所述连接建立参数分配成功后, 发送携带有所述连接建立参数的 响应消息给第一制式网络设备, 以使得所述第一制式网络设备将所述连接建立 参数通知给所述 UE,减少了系统间、 系统与 UE间的信令交互,节省信令开销, 缩短连接建立时延, 提升用户感受。
如图 8所示,本发明实施例提供的一种系统间空口连接重定向的用户设备, 所述用户设备包括发送单元 801、接收单元 802和连接建立单元 803 , 可以用于 执行图 1所示的实施例, 具体如下所述。
发送单元 801 , 用于在第一制式小区内发送连接请求消息给第一制式网络 设备;
接收单元 802, 用于接收所述第一制式网络设备发送的连接建立消息, 所 述连接建立消息携带第二制式网络设备为所述 UE分配的连接建立参数;
连接建立单元 803 , 用于根据所述接收单元 802获得所述连接建立参数, 并根据所述连接建立参数与所述第二制式网络设备建立连接。
其中, 所述第一制式网络设备, 第二制式网络设备, 第一制式小区, 以及 连接建立参数与图 1所示实施例中的相关描述一致。
可选的, 如图 9所示, 所述用户设备还包括:
测量单元 804, 用于测量第二制式小区的测量信息, 并将所述测量信息发 送给, 以使得所述发送单元 801通过所述连接请求消息发送给所述第一制式网 络设备。
其中, 所述第二制式小区的相关描述与步骤 101中一致。
本实施例中, 用户设备在接收连接建立参数后, 根据所述连接建立参数与 第二制式网络设备建立连接, 减少了系统间、 系统与 UE间的信令交互, 节省 信令开销, 缩短连接建立时延, 提升用户感受。
如图 10所示, 本发明实施例提供的一种系统间空口连接重定向的系统, 所 述系统包括图 4或图 5所示的第一制式网络设备, 图 6或图 7所示的第二制式 网络设备, 以及图 8或图 9所示的用户设备。
如图 11所示,本实施例提供一种系统间空口连接重定向的第一制式网络设 备, 例如, 所述第一制式网络设备可以是 RNC或者 eNB, 包括: 接收器 1101、 处理器 1102和发射器 1103 , 所述第一制式网络设备可以用于执行图 1所示实 施例, 具体如下所述。
接收器 1101 , 用于接收用户设备 UE在第一制式小区内发送的连接请求消 息; 处理器 1102, 用于在所述接收器 1301接收所述连接请求消息后, 进行重 定向判决;
发射器 1103 , 用于在所述处理器确定将所述 UE重定向到第二制式网络设 备管理的第二制式小区后,发送通知消息请求所述第二制式网络设备为所述 UE 分配连接建立参数;
所述接收器 1101 , 还用于接收所述第二制式网络设备发送的携带有所述连 接建立参数的响应消息;
所述发射器 1103 , 还用于将所述连接建立参数发送给所述 UE, 以使得所 述 UE根据所述连接建立参数与所述第二制式网络设备建立连接。
其中, 所述通知消息, 第二制式小区, 第二制式网络设备, 以及所述连接 建立参数与图 1所示实施例的相关描述一致。
可选的, 所述第一制式网络设备可以用于执行图 2所示实施例中的方法, 所述处理器 1102还用于:
获取所述第二制式小区的负载信息, 并根据所述第二制式小区的负载信息 进行重定向判决;
当所述第二制式小区的负载小于第一阔值时, 确定将所述 UE重定向到所 述第二制式小区; 或者,
当所述第一制式小区的负载大于所述第二制式小区的负载, 且所述第一制 式小区的负载与所述第二制式小区的负载之间的差值大于第二阔值时, 确定将 所述 UE重定向到所述第二制式小区。
其中, 所述第一阔值和第二阔值, 以及负载的相关描述参见步骤 203。 可选的, 当所述连接请求消息包含用于指示所述 UE发起的业务的类型的 业务类型指示信息时, 所述处理器 1102还用于:
根据所述业务类型指示信息, 获得所述 UE发起的业务的类型;
当所述 UE发起的业务的类型为预设的业务类型时, 确定将所述 UE重定 向到所述第二制式小区。 其中, 所述业务类型指示信息的相关描述参见步骤 101 ; 所述预设的业务 类型的相关描述参见步骤 202。
可选的, 当满足重定向判决的第二制式小区个数为至少一个时, 所述处理 器 1102还用于:
根据预先设置的重定向目标小区选择条件, 在满足重定向判决的第二制式 小区中选择重定向目标小区;
当所述重定向目标小区选择成功时, 发送所述通知消息请求所述第二制式 网络设备为所述 UE分配连接建立参数。
其中, 所述预先设置的重定向目标小区选择条件的相关描述参见步骤 103。 可选的, 当所述连接请求消息包含所述 UE测量的所述第二制式小区的测 量信息时, 所述处理器 1102还用于:
获得所述 UE测量的所述第二制式小区的测量信息;
当所述第二制式小区中存在至少一个小区的测量信息满足预设条件时, 在 所述至少一个小区中选择一个小区作为重定向目标小区,发送通知消息; 或者, 当所述第二制式小区的测量信息均不满足预设条件时, 所述重定向目标小 区选择失败, 不进行重定向处理。
可选的, 当所述连接请求消息包含用于指示所述 UE是否支持系统间连接 重定向的连接重定向标志位时, 所述处理器 1102还用于:
在所述连接请求消息中获得所述连接重定向标志位, 并在所述连接重定向 标志位指示所述 UE支持系统间连接重定向时, 进行重定向判决。
本实施例中, 第一制式网络设备在收到 UE发送的连接请求消息后立即进 行重定向判决, 省去了所述 UE与第一制式网络设备间的连接建立流程; 同时, 当重定向判决确定将所述 UE进行重定向处理后, 发送通知消息触发第二制式 网络设备在重定向目标小区中为所述 UE分配连接建立参数, 使得所述 UE能 够根据分配的连接建立参数直接与第二制式网络设备进行连接, 无需重选第二 制式小区, 有效减少了第一制式网络设备, 以及第二制式网络设备与 UE间的 信令交互, 节省信令开销, 缩短连接建立时延, 提升用户感受。
如图 12所示,本发明实例提供的一种系统间空口连接重定向的第二制式网 络设备, 例如, 所述第二制式网络设备可以是 RNC或者 eNB, 包括: 接收器 1201、 处理器 1202和发射器 1203 , 可以用于执行图 1所示实施例, 具体如下 所述。
接收器 1201 , 用于接收第一制式网络设备发送的通知消息;
处理器 1202, 用于在所述接收器 1201接收所述通知消息后, 为用户设备 UE分配连接建立参数;
发射器 1203 ,用于在处理器 1202为所述 UE成功分配连接建立参数后,发 送携带有所述连接建立参数的响应消息给所述第一制式网络设备, 以使得所述 第一制式网络设备将所述连接建立参数发送给所述 UE。
其中, 所述第一制式网络设备, 通知消息, 响应消息, 以及连接建立参数 与图 1所示实施例中的相关描述一致。
可选的, 所述第二制式网络设备可以用于执行图 3所示实施例, 当所述通 知消息包含第二制式小区的测量信息时, 所述处理器 1202还用于:
在所述接收器接收的通知消息中, 获取所述第二制式小区的测量信息; 根据所述获取的第二制式小区的测量信息选择重定向目标小区, 并在选定 重定向目标小区后, 在所述选定的重定向目标小区中为所述 UE分配所述连接 建立参数。
本实施例中, 第二制式网络设备在接收到通知消息后, 给 UE分配连接建 立参数, 并在连接建立参数分配成功后, 发送携带有所述连接建立参数的响应 消息给第一制式网络设备, 使得所述第一制式网络设备将所述连接建立参数通 知给所述 UE, 减少了系统间、 系统与 UE间的信令交互, 节省信令开销, 缩短 连接建立时延, 提升用户感受。
如图 13所示, 本发明实例提供的一种系统间空口连接重定向的用户设备, 包括: 发射器 1301、 接收器 1302和处理器 1303 , 可以用于执行图 1所示实施 例, 具体如下所述。
发射器 1301 , 用于在第一制式小区内发送连接请求消息给第一制式网络设 备;
接收器 1302, 用于接收所述第一制式网络设备发送携带有第二制式网络设 备为所述 UE分配的连接建立参数的连接建立消息;
处理器 1303 , 用于在所述接收器 1302接收的连接建立消息中, 获取所述 连接建立参数, 并根据所述连接建立参数与所述第二制式网络设备建立连接。
其中, 所述第一制式网络设备, 第二制式网络设备, 第一制式小区, 以及 连接建立参数与图 1所示实施例中的相关描述一致。
可选的, 所述接收器 1302还用于接收第二制式小区的下行信号, 所述处理 器 1303还用于:
根据所述下行信号, 获得所述第二制式小区的测量信息, 并将所述测量信 息存放在所述连接请求消息中通过所述发射器 1301 发送给所述第一制式网络 设备。
其中, 所述第二制式小区的相关描述与步骤 101中一致。
本实施例中, 用户设备在接收连接建立参数后, 根据所述连接建立参数与 第二制式网络设备建立连接, 减少了系统间、 系统与 UE间的信令交互, 节省 信令开销, 缩短连接建立时延, 提升用户感受。
本发明实施例提供的一种系统间空口连接重定向的系统, 所述系统包括图
11所示的第一制式网络设备, 图 12所示的第二制式网络设备, 以及图 13所的 示的用户设备。
本领域普通技术人员可以理解: 实现上述方法实施例的全部或部分步骤可 以通过程序指令相关的硬件来完成, 前述的程序可以存储于计算机可读取存储 介质中, 该程序在执行时, 执行包括上述方法实施例的步骤; 而前述的存储介 质包括: ROM、 RAM, 磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是: 以上实施例仅用以说明本发明的技术方案, 而非对其限 制; 尽管参照前述实施例对本发明进行了详细的说明, 本领域的普通技术人员 应当理解: 其依然可以对前述各实施例所记载的技术方案进行修改, 或者对其 中部分技术特征进行等同替换; 而这些修改或者替换, 并不使相应技术方案的 本质脱离本发明各实施例技术方案的精神和范围。

Claims

权 利 要 求 书
1、 一种系统间空口连接重定向的方法, 其特征在于, 所述方法包括: 第一制式网络设备接收用户设备 UE在第一制式小区内发送的连接请求消 息, 进行重定向判决;
所述第一制式网络设备在确定将所述 UE重定向到第二制式网络设备管理 的第二制式小区后, 发送通知消息请求所述第二制式网络设备为所述 UE分配 连接建立参数;
所述第一制式网络设备接收所述第二制式网络设备发送的携带有所述连接 建立参数的响应消息, 并将所述连接建立参数发送给所述 UE。
2、 根据权利要求 1所述的方法, 其特征在于, 所述进行重定向判决包括: 获取所述第二制式小区的负载信息;
根据所述第二制式小区的负载信息进行重定向判决。
3、 根据权利要求 2所述的方法, 其特征在于, 所述根据所述第二制式小区 的负载信息进行重定向判决包括:
当所述第二制式小区的负载小于第一阔值时,确定将所述 UE重定向到所述 第二制式小区; 或者,
当所述第一制式小区的负载大于所述第二制式小区的负载, 且所述第一制 式小区的负载与所述第二制式小区的负载之间的差值大于第二阔值时, 确定将 所述 UE重定向到所述第二制式小区。
4、根据权利要求 2或 3所述的方法, 其特征在于, 当所述连接请求消息包含 业务类型指示信息时,所述业务类型指示信息用于指示所述 UE发起的业务的类 型, 在所述获取所述第二制式小区的负载信息之前, 还包括:
根据所述业务类型指示信息, 获得所述 UE发起的业务的类型;
当所述 UE发起的业务的类型为预设的业务类型时,获取所述第二制式小区 的负载信息, 根据所述第二制式小区的负载信息进行重定向判决。
5、 根据权利要求 1所述的方法, 其特征在于, 当所述连接请求消息包含业 务类型指示信息时, 所述业务类型指示信息用于指示所述 UE发起的业务的类 型, 所述进行重定向判决包括:
根据所述业务类型指示信息, 获得所述 UE发起的业务的类型;
当所述 UE发起的业务的类型为预设的业务类型时, 确定将所述 UE重定向 到所述第二制式小区。
6、 根据权利要求 1-5中任一项所述的方法, 其特征在于, 当满足重定向判 决的第二制式小区个数为至少一个时, 在所述发送通知消息请求所述第二制式 网络设备为所述 UE分配连接建立参数之前, 还包括:
根据预先设置的重定向目标小区选择条件, 在所述满足重定向判决的第二 制式小区中选择重定向目标小区;
当所述重定向目标小区选择成功时, 发送所述通知消息请求所述第二制式 网络设备为所述 UE分配连接建立参数。
7、 根据权利要求 6所述的方法, 其特征在于, 当所述连接请求消息包含所 述 UE测量的所述第二制式小区的测量信息时,所述根据预先设置的重定向目标 小区选择条件,在满足重定向判决的第二制式小区中选择重定向目标小区包括: 获得所述 UE测量的所述第二制式小区的测量信息;
当满足重定向判决的第二制式小区中存在至少一个小区的测量信息满足预 设条件时, 在所述至少一个小区中选择一个小区作为重定向目标小区。
8、 根据权利要求 1-7中任一项所述的方法, 其特征在于, 当所述连接请求 消息包含用于指示所述 UE是否支持系统间连接重定向的连接重定向标志位时, 在所述进行重定向判决之前, 还包括:
获得所述连接重定向标志位;
在所述连接重定向标志位指示所述 UE支持系统间连接重定向时 ,进行重定 向判决。
9、 一种系统间空口连接重定向的方法, 其特征在于, 所述方法包括: 第二制式网络设备接收第一制式网络设备发送的通知消息, 并为用户设备 UE分配连接建立参数;
所述第二制式网络设备在为所述 UE成功分配连接建立参数后,发送携带有 所述连接建立参数的响应消息给所述第一制式网络设备, 以使得所述第一制式 网络设备将所述连接建立参数发送给所述 UE。
10、根据权利要求 9所述的系统间空口连接重定向的方法, 其特征在于, 当 所述通知消息包含第二制式小区的测量信息时, 在所述第二制式网络设备接收 第一制式网络设备发送的通知消息之后, 还包括:
获取所述第二制式小区的测量信息, 并根据所述第二制式小区的测量信息 选择重定向目标小区。
11、 一种系统间空口连接重定向的方法, 其特征在于, 所述方法包括: 用户设备 UE在第一制式小区内发送连接请求消息给第一制式网络设备; 所述 UE接收所述第一制式网络设备发送的连接建立消息,获取连接建立参 数, 所述连接建立消息携带第二制式网络设备为所述 UE分配的连接建立参数; 所述 UE根据所述连接建立参数, 与所述第二制式网络设备建立连接。
12、 根据权利要求 11所述的系统间空口连接重定向的方法, 其特征在于, 所述连接请求消息包含业务类型指示信息 , 第二制式小区的测量信息和连接重 定向标志位中至少一种。
13、 一种系统间空口连接重定向的第一制式网络设备, 其特征在于, 所述 第一制式网络设备包括:
接收单元,用于接收用户设备 UE在第一制式小区内发送的连接请求消息; 重定向判决单元, 用于在所述接收单元接收所述连接请求消息后, 进行重 定向判决;
发送单元, 用于在所述重定向判决单元确定将所述 UE重定向到第二制式 网络设备管理的第二制式小区后, 发送通知消息请求所述第二制式网络设备为 所述 UE分配连接建立参数;
转发单元, 用于接收所述第二制式网络设备发送的携带有所述连接建立参 数的响应消息, 并将所述连接建立参数发送给所述 UE, 以使得所述 UE根据所 述连接建立参数与所述第二制式网络设备建立连接。
14、根据权利要求 13所述的第一制式网络设备, 其特征在于, 所述重定向 判决单元还用于:
获取所述第二制式小区的负载信息, 根据所述第二制式小区的负载信息进 行重定向判决;
当所述第二制式小区的负载小于第一阔值时,确定将所述 UE重定向到所述 第二制式小区; 或者,
当所述第一制式小区的负载大于所述第二制式小区的负载, 且所述第一制 式小区的负载与所述第二制式小区的负载之间的差值大于第二阔值时, 确定将 所述 UE重定向到所述第二制式小区。
15、根据权利要求 14所述的第一制式网络设备, 其特征在于, 当所述连接 请求消息包含用于指示所述 UE发起的业务的类型的业务类型指示信息时, 所 述重定向判决单元还用于:
根据所述业务类型指示信息, 获得所述 UE发起的业务的类型;
当所述 UE发起的业务的类型为预设的业务类型时, 获取所述第二制式小 区的负载信息, 根据所述第二制式小区的负载信息进行重定向判决。
16、根据权利要求 13所述的第一制式网络设备, 其特征在于, 当所述连接 请求消息包含用于指示所述 UE发起的业务的类型的业务类型指示信息时, 所 述重定向判决单元还用于:
根据所述业务类型指示信息, 获得所述 UE发起的业务的类型;
当所述 UE发起的业务的类型为预设的业务类型时, 确定将所述 UE重定向 到所述第二制式小区。
17、 根据权利要求 13-16中任一项所述的第一制式网络设备, 其特征在于, 当满足重定向判决的第二制式小区个数为至少一个时, 所述重定向判决单元还 用于: 根据预先设置的重定向目标小区选择条件, 在满足重定向判决的第二制式 小区中选择重定向目标小区;
当所述重定向目标小区选择成功时, 通知所述发送单元发送所述通知消息 请求所述第二制式网络设备为所述 UE分配连接建立参数。
18、 根据权利要求 17所述的第一制式网络设备, 其特征在于, 当所述连接 请求消息包含所述 UE测量的所述第二制式小区的测量信息时,所述重定向判决 单元还用于:
获得所述 UE测量的所述第二制式小区的测量信息;
当满足重定向判决的第二制式小区中存在至少一个小区的测量信息满足预 设条件时, 在所述至少一个小区中选择一个小区作为重定向目标小区, 通知发 送单元发送所述通知消息。
19、 根据权利要求 13-18中任一项所述的第一制式网络设备, 其特征在于, 当所述连接请求消息包含用于指示所述 UE是否支持系统间连接重定向的连接 重定向标志位时, 还包括:
UE支持能力判断单元,用于在所述接收单元接收的连接请求消息中获得所 述连接重定向标志位,并在所述连接重定向标志位指示所述 UE支持系统间连接 重定向时, 通知所述重定向判决单元进行重定向判决。
20、 一种系统间空口连接重定向的第二制式网络设备, 其特征在于, 所述 第二制式网络设备包括:
接收单元, 用于接收第一制式网络设备发送的通知消息;
分配单元, 用于在所述接收单元接收所述通知消息后, 为用户设备 UE分配 连接建立参数;
发送单元, 用于在所述分配单元为所述 UE成功分配连接建立参数后, 发送 携带有所述连接建立参数的响应消息给所述第一制式网络设备, 以使得所述第 一制式网络设备将所述连接建立参数发送给所述 UE。
21、 根据权利要求 20所述的第二制式网络设备, 其特征在于, 当所述通知 消息包含第二制式小区的测量信息时, 还包括:
获取单元, 用于在所述接收单元接收的通知消息中获取所述第二制式小区 的测量信息;
选择单元, 用于根据所述获取单元获取的第二制式小区的测量信息选择重 定向目标小区, 并在选定重定向目标小区后通知所述分配单元在所述选定的重 定向目标小区中为所述 UE分配所述连接建立参数。
22、 一种系统间空口连接重定向的用户设备, 其特征在于, 所述用户设备 包括:
发送单元,用于在第一制式小区内发送连接请求消息给第一制式网络设备; 接收单元, 用于接收所述第一制式网络设备发送的连接建立消息, 所述连 接建立消息携带第二制式网络设备为所述 UE分配的连接建立参数;
连接建立单元, 用于在所述接收单元接收的所述连接建立消息中获得所述 连接建立参数, 并根据所述连接建立参数与所述第二制式网络设备建立连接。
23、根据权利要求 22所述的用户设备, 其特征在于, 所述用户设备还包括: 测量单元, 用于测量第二制式小区的测量信息, 并将所述测量信息发送给 所述发送单元, 以使得所述发送单元通过所述连接请求消息发送给所述第一制 式网络设备。
24、 一种系统间空口连接重定向的系统, 其特征在于, 所述系统包括权利 要求 13-19中任一项所述的第一制式网络设备,权利 20或 21所述的第二制式网络 设备, 以及权利要求 22或 23所述的用户设备。
25、 一种系统间空口连接重定向的第一制式网络设备, 其特征在于, 所述 第一制式网络设备包括: 接收器、 处理器和发射器;
所述接收器, 用于接收用户设备 UE在第一制式小区内发送的连接请求消 息;
所述处理器, 用于在所述接收器接收所述连接请求消息后, 进行重定向判 决; 所述发射器,用于在所述处理器确定将所述 UE重定向到第二制式网络设备 管理的第二制式小区后,发送通知消息请求所述第二制式网络设备为所述 UE分 配连接建立参数;
所述接收器, 还用于接收所述第二制式网络设备发送的携带有所述连接建 立参数的响应消息;
所述发射器, 还用于将所述连接建立参数发送给所述 UE, 以使得所述 UE 根据所述连接建立参数与所述第二制式网络设备建立连接。
26、 根据权利要求 25所述的第一制式网络设备, 其特征在于, 所述处理器 还用于:
获取所述第二制式小区的负载信息, 并根据所述第二制式小区的负载信息 进行重定向判决;
当所述第二制式小区的负载小于第一阔值时,确定将所述 UE重定向到所述 第二制式小区; 或者,
当所述第一制式小区的负载大于所述第二制式小区的负载, 且所述第一制 式小区的负载与所述第二制式小区的负载之间的差值大于第二阔值时, 确定将 所述 UE重定向到所述第二制式小区。
27、 根据权利要求 25所述的第一制式网络设备, 其特征在于, 当所述连接 请求消息包含用于指示所述 UE发起的业务的类型的业务类型指示信息时,所述 处理器还用于:
根据所述业务类型指示信息, 获得所述 UE发起的业务的类型;
当所述 UE发起的业务的类型为预设的业务类型时, 确定将所述 UE重定向 到所述第二制式小区。
28、 根据权利要求 25-27中任一项所述的第一制式网络设备, 其特征在于, 当满足重定向判决的第二制式小区个数为至少一个时, 所述处理器还用于: 根据预先设置的重定向目标小区选择条件, 在满足重定向判决的第二制式 小区中选择重定向目标小区; 当所述重定向目标小区选择成功时, 发送所述通知消息请求所述第二制式 网络设备为所述 UE分配连接建立参数。
29、 根据权利要求 28所述的第一制式网络设备, 其特征在于, 当所述连接 请求消息包含所述 UE测量的所述第二制式小区的测量信息时,所述处理器还用 于:
获得所述 UE测量的所述第二制式小区的测量信息;
当满足重定向判决的第二制式小区中存在至少一个小区的测量信息满足预 设条件时, 在所述至少一个小区中选择一个小区作为重定向目标小区, 发送所 述通知消息。
30、 根据权利要求 25-29中任一项所述的第一制式网络设备, 其特征在于, 当所述连接请求消息包含用于指示所述 UE是否支持系统间连接重定向的连接 重定向标志位时, 所述处理器还用于:
在所述连接请求消息中获得所述连接重定向标志位, 并在所述连接重定向 标志位指示所述 UE支持系统间连接重定向时, 进行重定向判决。
31、 一种系统间空口连接重定向的第二制式网络设备, 其特征在于, 所述 第二制式网络设备包括: 接收器、 处理器和发射器;
接收器, 用于接收第一制式网络设备发送的通知消息;
处理器, 用于在所述接收器接收所述通知消息后, 为用户设备 UE分配连接 建立参数;
发射器, 用于在处理器为所述 UE成功分配连接建立参数后, 发送携带有所 述连接建立参数的响应消息给所述第一制式网络设备, 以使得所述第一制式网 络设备将所述连接建立参数发送给所述 UE。
32、 根据权利要求 31所述的第二制式网络设备, 其特征在于, 当所述通知 消息包含第二制式小区的测量信息时, 所述处理器还用于:
在所述接收器接收的通知消息中, 获取所述第二制式小区的测量信息; 根据所述获取的第二制式小区的测量信息选择重定向目标小区, 并在选定 重定向目标小区后,在所述选定的重定向目标小区中为所述 UE分配所述连接建 立参数。
33、 一种系统间空口连接重定向的用户设备, 其特征在于, 所述用户设备 包括: 发射器、 接收器和处理器;
发射器, 用于在第一制式小区内发送连接请求消息给第一制式网络设备; 接收器 , 用于接收所述第一制式网络设备发送携带有第二制式网络设备为 所述 UE分配的连接建立参数的连接建立消息;
处理器, 用于在所述接收器接收的连接建立消息中, 获取所述连接建立参 数, 并根据所述连接建立参数与所述第二制式网络设备建立连接。
34、 根据权利要求 33所述的用户设备, 其特征在于, 所述接收器还用于接 收第二制式小区的下行信号, 所述处理器还用于:
才艮据所述下行信号, 获得所述第二制式小区的测量信息, 并将所述测量信 息存放在所述连接请求消息中通过所述发射器发送给所述第一制式网络设备。
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