WO2012003769A1 - 一种切换时的接入控制方法及系统 - Google Patents

一种切换时的接入控制方法及系统 Download PDF

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Publication number
WO2012003769A1
WO2012003769A1 PCT/CN2011/076519 CN2011076519W WO2012003769A1 WO 2012003769 A1 WO2012003769 A1 WO 2012003769A1 CN 2011076519 W CN2011076519 W CN 2011076519W WO 2012003769 A1 WO2012003769 A1 WO 2012003769A1
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Prior art keywords
throughput
source cell
access control
cell
source
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PCT/CN2011/076519
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English (en)
French (fr)
Inventor
邓云
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中兴通讯股份有限公司
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Publication of WO2012003769A1 publication Critical patent/WO2012003769A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information

Definitions

  • the present invention relates to handover technologies, and in particular, to an access control method and system during handover. Background technique
  • the UE After the service's, the area, and the source cell establish a connection with the network, the UE still needs to measure the signal quality of its serving cell and the neighboring cell, so as to select a more suitable cell for handover.
  • the target cell needs to implement access control for the UE, and if the resource allows, the handover request of the UE is allowed.
  • the specific handover process is shown in FIG. 1 , where the global terrestrial radio access network is evolved ( EUTRAN, Evolved Universal Terrestrial Radio Access Network)
  • EUTRAN Evolved Universal Terrestrial Radio Access Network
  • Step 101 Perform measurement on the serving cell, that is, the UE in which the source cell is in the connected state, according to the measurement configuration.
  • the UE detects the neighboring cell that meets the reporting condition, the UE reports the measurement report to the source base station to which the source cell belongs.
  • the measurement report refers to a measurement report in which the signal quality of the neighboring cell is higher than a predetermined offset of the serving cell, or a measurement report in which the signal quality of the neighboring cell is higher than a predetermined threshold.
  • Step 102 After receiving the measurement report, the source base station to which the source cell belongs, makes a handover decision, and needs to switch the UE to the neighboring base station, that is, the target cell where the target base station is located, and the source base station sends a handover request to the target base station.
  • the QoS (Quality of Service) parameter of the UE-established Radio Access Bearer (E-RAB, E-UTRAN Radio Access Bearer) is included in the handover request.
  • Step 103 After receiving the handover request, the target base station, according to the QoS parameter included in the handover request The number performs access control, allowing the handover of the UE to allocate resources for the UE when resources permit.
  • Step 104 The target base station sends a handover request acknowledgement to the source base station, including the allocated resource information.
  • the source base station transmits a handover command to the UE through the RRC connection reconfiguration message carrying mobility control information ( mobilityControlInfo).
  • mobilityControlInfo mobility control information
  • Step 106 The UE obtains synchronization with the target cell, initiates random access in the target cell, and sends handover complete signaling to the target base station. At this point, the UE switches to the target cell.
  • the QoS parameters include a QoS Class Identifier (QCI, QoS Class Identifier), an allocation, and a reservation priority (ARP, Allocation). And Retention Priority ) fame
  • QCI QoS Class Identifier
  • ARP Allocation
  • Retention Priority Retention Priority
  • the QoS parameters also include the uplink GBR and the downlink GBR, and the maximum bit rate of the uplink and downlink (MBR, The maximum frequency of the MBR may be greater than or equal to the GBR.
  • the GBR may also be referred to as a guaranteed bit rate; the MBR may also be referred to as a maximum bit rate.
  • the target base station when the target base station finds that the UE establishes the GBR service, it needs to implement access control according to the GBR, and since the actual throughput (throughput) of the UE in the source cell is not considered in the access control process, The Throughput can also be understood as traffic. Therefore, if the actual throughput of the UE exceeds the GBR, the target base station can only implement access control according to the GBR and allocate resources to the UE, resulting in the following problems: The situation is greatly reduced, affecting the user's experience; in another case, if the target base station finds that the UE establishes a non-GBR service, since the target base station does not consider the UE's actual throughput in the source cell, the access control is implemented.
  • the main object of the present invention is to provide an access control method and system for handover, which can perform access control according to actual service requirements of the UE, so as not to affect the user's experience.
  • An access control method during handover includes:
  • the source network side sends the handover signaling to the target network side;
  • the handover signaling includes the throughput of the user equipment UE in the source cell;
  • the target network side After receiving the handover signaling, the target network side implements access control according to the throughput of the UE in the source cell or the monthly quality QoS parameter of the radio access bearer E-RAB.
  • the throughput of the UE in the source cell includes: a throughput of the UE in the uplink of the source cell, and/or a throughput of the UE in the downlink of the source cell.
  • the throughput of the UE in the uplink of the source cell includes: a total data packet size sent by the receiving UE divided by a quotient of the length of time for receiving the data packet sent by the UE, or an average data packet capacity sent by the receiving UE within a period of time.
  • the downlink throughput of the UE in the source cell includes: a total data packet capacity sent to the UE divided by a quotient of a length of time for transmitting a data packet to the UE, or an average data packet capacity sent to the UE within a period of time.
  • the time period is configured by default by the protocol or by the source network side.
  • the method further includes: when the performing access control is performed according to the throughput of the source cell or the QoS parameter of the E-RAB, the UE allocates or reserves resources for the UE.
  • the UE When the throughput of the UE in the source cell is less than or equal to the guaranteed bit rate GBR or the maximum bit rate MBR in the QoS parameter of the E-RAB, the UE is allocated when the access control is implemented.
  • the reserved resource specifically includes: the target network side performs access control according to the throughput of the source cell in the source cell, and allocates or reserves resources for the UE; or
  • the allocating or reserving resources for the UE when the access control is implemented specifically includes: the target network side according to the E - the QoS parameter of the RAB implements access control, and allocates or reserves resources for the UE in the throughput of the source cell when the resource allows; or
  • the allocating or reserving resources for the UE when the access control is implemented specifically includes: the target network side is according to the UE at the source.
  • the throughput of the cell implements access control, and allocates or reserves resources for the UE; or
  • the allocating or reserving resources for the UE when the access control is implemented specifically includes: the target network side is Determining, by the UE, a target cell that meets the throughput requirement of the UE in the source cell; or, when the throughput of the UE in the source cell is greater than the GBR in the QoS parameter of the E-RAB,
  • the method of allocating or reserving resources for the UE during the control includes: performing, by the target network, access control according to the throughput of the UE in the source cell, and allocating or reserving resources for the UE.
  • An access control system for handover comprising: an access control unit, configured to: when the target network side receives the handover signaling from the source network side, according to the throughput of the UE in the source cell, or the E-RAB
  • the QoS parameter implements access control; wherein, the throughput of the UE in the source cell is included in the handover signaling.
  • the throughput of the UE in the source cell includes: a throughput of the UE in the uplink of the source cell, and/or a throughput of the UE in the downlink of the source cell.
  • the throughput of the UE in the uplink of the source cell includes: a total data packet size sent by the receiving UE divided by a quotient of the length of time for receiving the data packet sent by the UE, or an average data packet capacity sent by the receiving UE within a period of time.
  • the downlink throughput of the UE in the source cell includes: a total data packet capacity sent to the UE divided by a quotient of a length of time for transmitting a data packet to the UE, or an average data packet capacity sent to the UE within a period of time.
  • the time period is configured by default by the protocol or by the source network side.
  • the access control unit is further configured to: according to the throughput of the UE in the source cell, or
  • resources are allocated or reserved for the UE.
  • the access control unit is further configured to: when the throughput of the UE in the source cell is less than or equal to a GBR or an MBR in the QoS parameter of the E-RAB, where the target network side is in accordance with the UE
  • the throughput of the source cell implements access control, and allocates or reserves resources for the UE; or
  • the target network side When the throughput of the UE in the source cell is greater than the GBR in the QoS parameter of the E-RAB, the target network side performs access control according to the QoS parameter of the E-RAB, and if the resource permits, the UE is used.
  • the throughput of the source cell allocates or reserves resources for the UE; or
  • the target network side When the QoS parameters of the E-RAB in the handover signaling do not include the GBR and the MBR, the target network side performs access control according to the throughput of the source cell in the source cell, and allocates or reserves resources for the UE; or
  • the target network side selects, for the UE, a target cell that meets the throughput requirement of the UE in the source cell;
  • the method for allocating or reserving resources for the UE when the access control is implemented specifically includes: the target network side performing access control according to the throughput of the source cell in the UE, and allocating or pre-preserving the UE Keep resources.
  • the source network side of the present invention sends handover signaling to the target network side; the handover signaling includes the throughput of the UE in the source cell; after the target network side receives the handover signaling, according to the throughput of the UE in the source cell, or E-RAB
  • the QoS parameters implement access control.
  • the access control in consideration of the actual throughput of the UE in the source cell, since the access control is implemented according to the throughput of the UE in the source cell or the QoS parameter of the E-RAB, it can be performed according to the actual service requirement of the UE. Access control so that it does not affect the user's experience.
  • FIG. 1 is a schematic diagram of a UE handover process in an LTE system in the prior art
  • FIG. 2 is a schematic diagram of a handover procedure according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a handover process according to Embodiment 2 of the present invention.
  • FIG. 4 is a schematic diagram of a handover process according to Embodiment 3 of the present invention. detailed description
  • the basic idea of the present invention is: the source network side sends the handover signaling to the target network side; the handover signaling includes the throughput of the UE in the source cell; after the target network side receives the handover signaling, according to the throughput of the UE in the source cell, Or the E-RAB's QoS parameters implement access control.
  • the access control can be performed according to the actual service requirement of the UE, so that the user experience is not affected.
  • the access control can be performed according to the actual service requirements of the UE. Therefore, resource allocation for the UE during access control is more reasonable and more suitable for the user time service requirement, so that the user experience is greatly improved.
  • An access control method at the time of handover mainly includes the following contents:
  • the handover signaling sent by the source network to the target network side includes the throughput of the UE in the source cell, and after the target network side receives the handover signaling, according to the throughput of the UE in the source cell or the QoS of the E-RAB.
  • the parameters implement access control.
  • the throughput of the UE in the source cell herein refers to the actual throughput of the UE in the source cell, and is not described herein.
  • resources are allocated or reserved for the UE.
  • the throughput of the UE in the source cell includes: a throughput of the UE in the uplink of the source cell, and/or a throughput of the UE in the downlink of the source cell.
  • the throughput of the UE in the uplink of the source cell includes: a total packet capacity sent by the receiving UE divided by a quotient of the length of time for receiving the data packet sent by the UE, or an average data packet capacity sent by the receiving UE within a period of time.
  • the downlink throughput of the UE in the source cell includes: a total packet capacity sent to the UE divided by a quotient of a length of time for transmitting a data packet to the UE, or an average packet capacity sent to the UE within a period of time.
  • the period of time is configured by default by the protocol or by the source network side.
  • the resources are allocated or reserved for the UE, including the following cases:
  • Case 1 When the throughput of the UE in the source cell is less than or equal to the GBR or the MBR in the QoS parameter of the E-RAB, the target network side implements access control according to the throughput of the source cell in the UE, according to the UE in the source cell.
  • the throughput is allocated or reserved for the UE.
  • Case 2 When the throughput of the UE in the source cell is greater than the GBR in the QoS parameter of the E-RAB, the target network side implements access control according to the QoS parameter of the E-RAB, and if the resource permits, The throughput of the UE in the source cell allocates or reserves resources for the UE.
  • Case 3 When the QoS parameters of the E-RAB in the handover signaling do not include GBR and MBR, The target network side implements access control according to the throughput of the source cell in the UE, and allocates or reserves resources for the UE.
  • Case 4 When the target cell included in the handover signaling cannot satisfy the throughput of the UE in the source cell, the target network side selects, for the UE, a target cell that satisfies the throughput requirement of the UE in the source cell.
  • Case 5 When the throughput of the UE in the source cell is greater than the GBR in the QoS parameter of the E-RAB, the target network side implements access control according to the throughput of the UE in the source cell, according to the throughput of the UE in the source cell.
  • the UE allocates or reserves resources.
  • the source network side in the LTE system, the source network side refers to a source base station; in the WCDMA system, the source network side refers to a source radio network controller.
  • the target network side refers to the target base station in the LTE system; in the WCDMA system, the target network side refers to the target radio network controller.
  • the handover signaling in the LTE system, the handover signaling refers to a handover request or a handover requirement; in the WCDMA system, the handover signaling refers to a relocation request or a relocation requirement.
  • the method further includes: the target network side returns a handover command or a relocation command to the source network side, and the source network side sends a handover command to the UE, and triggers the UE to switch to the target cell.
  • the target network side can implement access control according to the actual service requirements of the UE, and allocate resources to the UE when performing access control, thereby avoiding scenarios in which the UE changes throughput before and after the handover, and enhances The user experience.
  • Embodiment 1 In the LTE system, there is a ⁇ 2 interface between the base station 1 and the base station 2, and the cells (cell 1 and Cell 2) under the control of the base station 1 and the cells (cell 3 and Cell 4) under the control of the base station 2 are in a neighbor relationship.
  • Base station 1 and base station 2 are any two base stations in the LTE system.
  • the UE is in the connected state in Cell 1 (the serving cell or the source cell), and the E-RAB established by the UE is a GBR service, and the uplink and downlink GBRs are both 500 kbps (kilobits/second), and the uplink and downlink MBRs are both 800 kbps. .
  • the UE performs measurement according to the measurement configuration sent by the base station 1 in the cell 1, and reports the measurement object that satisfies the reporting condition. At a certain moment, the UE reports to the base station 1 that the signal quality of the neighboring cells (Cell 3 and Cell 4) is higher than the signal quality of the serving cell (Cell 1) by a predetermined offset, and after receiving the measurement report, the base station 1 performs handover. Decision, the target cell for handover is Cell 3.
  • the base station 1 implements the handover decision, and needs to consider a plurality of factors, such as the signal quality of the serving cell, the signal quality of the target cell, the load of the target cell, and the like, which are prior art and are not described in detail herein.
  • the base station 1 is the source base station
  • the base station 2 is the target base station.
  • the specific process of the handover is as shown in FIG. 2, and includes the following steps: Step 201: The source base station sends the handover request signaling to the target base station.
  • the handover request signaling includes an identifier of the target cell, an identifier of the E-RAB established by the UE, a QoS parameter, and configuration information of the source cell.
  • the handover request signaling also carries the throughput of the UE in the source cell.
  • the throughput of the UE in the source cell may also be referred to as the traffic of the UE in the source cell.
  • the present invention is not limited to the specific name herein, and any related name that can implement the same function of the present invention is within the protection scope of the present invention. Inside, do not repeat them.
  • the source base station needs to always detect the throughput of the UE, and the throughput size can be sent to the UE (downlink) per unit time, or the capacity of the data packet sent by the UE (uplink) is received, for the downlink. Specifically, it can be expressed as the total data packet capacity (or size) sent to the UE / the length of time to send the data packet to the UE, and the unit is bit/second.
  • the specific data can be expressed as the total data sent by the receiving UE. Packet capacity / length of time to receive the packet sent by the UE, in bits per second.
  • the source base station detects the uplink, and/or downlink of the UE.
  • the parameter is included in the handover request, and the new cell is required to indicate the uplink and/or downlink throughput of the UE.
  • the uplink and downlink throughput of the UE is 600 kbps and 700 kbps, respectively.
  • the uplink and/or downlink throughput of the UE refers to three situations, namely, an uplink throughput of the UE, a downlink throughput of the UE, an uplink throughput of the UE, and a downlink throughput of the UE.
  • Step 202 After receiving the handover request signaling, the target base station performs access control according to the throughput of the source cell in the UE, and allocates resources to the UE in the throughput of the source cell.
  • the handover request signaling includes the QoS parameter of the UE establishing the E-RAB and the throughput of the uplink and downlink of the UE, and the throughput of the uplink and downlink of the UE is greater than the GBR of the uplink and downlink respectively, the target base station according to the throughput of the UE in the source cell.
  • the implementation of the access control allocates resources, or reserves resources (including radio resources, hardware resources, and S1 interface transport layer bandwidth resources) for the UE according to the throughput of the UE on the source cell and the downlink.
  • the idle resources of the target base station are sufficient to ensure the uplink and downlink throughput of the UE (upstream 600 kbps, downlink 700 kbps), so the access control is successful.
  • Step 203 The target base station sends a handover request acknowledgement signaling to the source base station, where the handover request acknowledgement signaling includes resource information allocated by the target base station to the UE.
  • Step 204 After receiving the handover request acknowledgement signaling, the source base station sends a handover command to the UE.
  • the source base station transmits a handover command to the UE by using the RRC connection reconfiguration carrying the mobility control information.
  • Step 205 The UE receives the handover command, obtains synchronization with the target cell, initiates random access in the target cell, and sends handover completion signaling to the target base station.
  • the target base station after receiving the handover complete signaling sent by the UE, the target base station triggers the core network to complete the handover of the network side path, so that the UE can continue to perform services.
  • the target base station performs resource allocation according to the uplink and downlink throughput of the source cell, which is mainly because the service carried by the UE has correlation in a period of time, that is, the throughput before the UE handover and the throughput after the handover.
  • the quantity has a large correlation (the throughput is similar), so the target base station allocates resources to the UE according to the actual throughput of the UE, ensuring that the UE is not affected by the handover. Reduced service throughput and enhanced user experience.
  • step 202 after receiving the handover request signaling, the target base station performs access control according to the QoS parameters of the E-RAB established by the UE, and the throughput of the UE in the source cell is The UE allocates resources; other steps are the same as in this embodiment.
  • the source radio network controller (SRNC) where the UE is located detects the throughput of the UE in the source cell, and when the UE switches, the enhanced relocation request sent by the SRNC to the target radio network controller (TRNC) through the lur interface is included.
  • the throughput of the UE in the source cell, the TRNC implements access control and allocates resources according to the QoS parameters of the E-RAB established by the UE and the throughput of the UE in the source cell.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • Base station 1 and base station 2 are any two base stations in the LTE system, and both base stations are connected to the core network.
  • the UE is in a connected state in Cell 1 (the serving cell or the source cell), and the E-RAB established by the UE is a non-GBR service.
  • the UE performs measurement according to the measurement configuration sent by the base station 1 in the cell 1, and reports the measurement object that satisfies the reporting condition. At a certain moment, the UE reports to the base station 1 that the signal quality of the neighboring cells (Cell 3 and Cell 4) is higher than the signal quality of the serving cell (Cell 1) by a predetermined offset, and after receiving the measurement report, the base station 1 performs handover. Decision, the target cell for handover is Cell 3.
  • the base station 1 is a source base station
  • the base station 2 is a target base station.
  • the specific process of the handover is as shown in FIG. 3, and includes the following steps:
  • Step 301 The source base station sends handover requirement signaling to the core network.
  • the handover requirement signaling includes an identifier of a target cell, configuration information at a source cell, and the like.
  • the handover requirement signaling also carries the throughput of the UE in the source cell.
  • the source base station needs to always detect the throughput of the UE, and the throughput size can be sent to the UE (downlink) per unit time, or the capacity of the data packet sent by the UE (uplink) is received, for the downlink.
  • it can be expressed as the total data packet size sent to the UE/the length of time to send the data packet to the UE, and the unit is bit/second.
  • the specific data capacity/reception of the receiving UE can be expressed.
  • the length of time that the UE sends a data packet in bits per second.
  • the parameter is included in the handover requirement signaling, and the newly added cell indicates the uplink and/or downlink throughput of the UE.
  • the uplink and downlink throughput of the UE are 300 kbps and 500 kbps, respectively.
  • Step 302 After receiving the handover requirement signaling, the core network sends the handover request signaling to the target base station.
  • the handover request signaling includes an identifier of the target cell, an identifier of the E-RAB established by the UE, a QoS parameter, and configuration information of the source cell.
  • the handover request signaling also carries the throughput of the UE in the source cell.
  • the core network has the identity of the E-RAB established by the UE and the corresponding QoS parameters, and this part of the parameters will be included in the handover request signaling.
  • Step 303 After receiving the handover request, the target base station performs access control according to the UE's throughput in the source cell, and allocates resources for the UE.
  • the target base station since the E-RAB established by the UE is a non-GBR service, the target base station cannot know the size of the allocated resource (or the size of the reserved resource) for the UE only by the QoS parameter, and the handover request includes the throughput of the UE in the source cell.
  • the target base station implements access control according to the QoS parameter and the throughput of the UE on the downlink of the source cell, and allocates resources to the UE, or reserves resources (including radio resources, hardware resources, and S1 interface transport layer bandwidth resources).
  • the resources of the target base station are sufficient to ensure the uplink and downlink throughput of the UE (upstream 300 kbps, downlink 500 kbps), so the access control is successful.
  • the target base station allocates resources to the UE according to the downlink throughput of the UE on the source cell, including selecting a carrier, or allocating a carrier. Number.
  • Step 304 The target base station sends a handover request acknowledgement signaling to the core network, and the handover request acknowledges
  • the signaling includes resource information allocated by the target base station to the UE.
  • Step 305 The core network sends a handover command to the source base station.
  • Step 306 After receiving the handover command sent by the core network, the source base station sends a handover command to the UE.
  • the source base station transmits a handover command to the UE by using the RRC connection reconfiguration carrying the mobility control information.
  • Step 307 The UE receives the handover command, obtains synchronization with the target cell, initiates random access in the target cell, and sends handover completion signaling to the target base station.
  • the target base station after receiving the handover complete signaling sent by the UE, notifies the core network that the UE has switched to the target base station.
  • This embodiment is applied to an LTE system, and the method of the present invention is equally applicable to a WCDMA system.
  • the WCDMA system if there is no Iur interface between the SRNC and the TRNC, when the UE switches, the SRNC sends a relocation request to the TRNC through the core network, and the request carries the UE's throughput in the source cell.
  • the TRNC implements access control and allocates resources according to the QoS parameters of the E-RAB established by the UE and the throughput of the UE in the source cell.
  • the UE only establishes one E-RAB. If the UE establishes multiple E-RABs, the source base station detects the uplink and downlink throughput of the multiple E-RABs, and the multiple Es that are detected during the handover. The uplink and downlink throughput of the -RAB is sent to the target base station by using handover signaling, and the target base station performs access control and allocates resources according to the QoS parameters of the E-RAB and the uplink and downlink throughput of the UE.
  • the base station calculates the total throughput of the E-RABs with the same QCI or ARP, and includes the total throughput in the handover signaling.
  • the target base station uniformly implements access control and resource allocation for the E-RAB having the same QCI or ARP.
  • the total throughput of the uplink and downlink is calculated separately. When the target base station implements access control, it needs to meet the total throughput of uplink and downlink respectively.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • Base station 1 and base station 2 are any two base stations in the LTE system.
  • the UE is in the connected state in Cell 1 (the serving cell or the source cell), and the E-RAB established by the UE is a GBR service, and the uplink and downlink GBRs are both 500 kbps (kilobits/second), and the uplink and downlink MBRs are both 900 kbps. .
  • the UE performs measurement according to the measurement configuration sent by the base station 1 in the cell 1, and reports the measurement object that satisfies the reporting condition. At a certain moment, the UE reports to the base station 1 that the signal quality of the neighboring cells (Cell 3, Cell 4, and Cell 5) is higher than the signal quality of the serving cell (Cell 1) by a predetermined offset, and after receiving the measurement report, the base station 1 receives the measurement report. A handover decision is made, and the target cell for handover is Cell 3.
  • the source base station carries the reestablishment information (ReestablishmentInfo) of the UE in Cell 4 and Cell 5 in the handover signaling, and the reconstruction information includes the cell radio network of the UE in the source cell.
  • Temporary identifier C-RNTI, Cell Radio Network Temporary Identifier
  • physical cell identity of the source cell C-RNTI, Cell Radio Network Temporary Identifier
  • target cell global identity of the potential reestablishment encryption key KeNB* of the UE in the potentially reconstructed target cell
  • truncated message integrity check Weight code short MAC-I
  • the base station 1 is a source base station
  • the base station 2 is a target base station.
  • the specific process of the handover is as shown in FIG. 4, and includes the following steps:
  • Step 401 The source base station sends a handover request signaling to the target base station.
  • the handover request signaling includes an identifier of the target cell, an identifier of the E-RAB established by the UE, a QoS parameter, configuration information of the source cell, and reconstruction information of the UE in the Cell 4 and the Cell 5.
  • the handover request signaling also carries the throughput of the UE in the source cell.
  • the source base station needs to always detect the throughput of the UE, and the throughput size may be sent to the UE (downlink) per unit time, or the capacity of the data packet sent by the UE (uplink) may be received, or It is expressed as the average packet capacity sent to the UE (downlink) or received (uplink) by the UE within a period of time, and the period of time may be the protocol default configuration or configured by the network side (source base station).
  • the source base station detects before sending the handover signaling.
  • the average throughput in 10 seconds, for the downlink the total packet capacity (or size)/10 seconds sent to the UE within 10 seconds before the source base station sends the handover signaling, in units of bits/second; Specifically, it can be expressed as the total data packet size/second of the receiving UE sent within 10 seconds before the source base station sends the handover signaling, and the unit is bit/second.
  • the source base station detects the uplink and/or downlink throughput of the UE, the parameter is included in the handover request, and the added cell is required to indicate the uplink and/or downlink throughput of the UE.
  • the uplink and downlink throughput of the UE are 600 kbps and 700 kbps, respectively.
  • Step 402 After receiving the handover request signaling, the target base station implements access control according to the throughput of the source cell in the UE, and allocates resources for the UE.
  • the target base station finds that the Cell 3 can satisfy the UE to establish the E-
  • the QoS parameters of the RAB are required, but the resources of the Cell 3 cannot meet the requirements of the downlink and downlink throughput of the UE in the source cell, and the target base station finds that the resources of the Cell 4 can meet the requirements of the uplink and downlink throughput of the UE in the source cell, so the target The base station resets the target cell of the handover, selects Cell 4 as the target cell, and allocates resources.
  • the handover request includes the UE's reconstruction information in Cell 4 and Cell 5, so the target base station considers that Cell 4 and Cell 5 can be the target cell of the UE handover, and the encryption key is included in the reconstruction information.
  • KeNB* so the target base station can modify the target cell (modified from Cell 3 to Cell 4).
  • Step 403 The target base station sends a handover request acknowledgement signaling to the source base station, where the handover request acknowledgement signaling includes resource information allocated by the target base station to the UE.
  • Step 404 After receiving the handover request acknowledgement signaling, the source base station sends a handover command to the UE.
  • the source base station transmits a handover command to the UE by using the RRC connection reconfiguration carrying the mobility control information.
  • Step 405 The UE receives the handover command, obtains synchronization with the target cell, and sends the message to the target cell. Random access is sent, and handover completion signaling is sent to the target base station.
  • the target base station after receiving the handover complete signaling sent by the UE, the target base station triggers the core network to complete the handover of the network side path, so that the UE can continue to perform services.
  • the target base station selects a cell that can satisfy the throughput according to the throughput of the source cell in the UE, and avoids the phenomenon that the throughput is reduced after the UE is switched, thereby enhancing the user experience.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • Base station 1 and base station 2 are any two base stations in the LTE system.
  • the UE is in the connected state in Cell 1 (the serving cell or the source cell), and the E-RAB established by the UE is a GBR service, and the uplink and downlink GBRs are both 500 kbps (kilobits/second), and the uplink and downlink MBRs are both 800 kbps. .
  • the UE performs measurement according to the measurement configuration sent by the base station 1 in the cell 1, and reports the measurement object that satisfies the reporting condition.
  • the UE reports to the base station 1 that the signal quality of the neighboring cells (Cell 3 and Cell 4) is higher than the signal quality of the serving cell (Cell 1) by a predetermined offset, and after receiving the measurement report, the base station 1 performs handover.
  • the target cell for handover is Cell 3.
  • the base station 1 is a source base station
  • the base station 2 is a target base station.
  • the specific process of the handover is similar to the flowchart shown in FIG. 2, and includes the following steps:
  • Step 501 The source base station sends a handover request signaling to the target base station.
  • the handover request signaling includes an identifier of the target cell, an identifier of the E-RAB established by the UE, a QoS parameter, and configuration information of the source cell.
  • the handover request signaling also carries the throughput of the UE in the source cell.
  • the source base station needs to always detect the throughput of the UE, and the throughput size can be sent to the UE (downlink) per unit time, or the capacity of the data packet sent by the UE (uplink) is received, for the downlink.
  • Specific can be expressed as total data sent to the UE Packet capacity (or size) / length of time to send a data packet to the UE, the unit is bit / sec; for uplink, the specific can be expressed as the total packet capacity sent by the receiving UE / the length of time that the receiving UE sends the data packet, the unit Is bit/second.
  • the parameter is included in the handover request, and the added cell is required to indicate the uplink and/or downlink throughput of the UE.
  • the actual throughput of the UE is low, and the uplink and downlink throughputs are 300 kbps and 400 kbps, respectively.
  • Step 502 After receiving the handover request signaling, the target base station implements access control according to the throughput of the source cell, and allocates resources for the UE.
  • the target base station finds that the resource of the Cell 3 cannot satisfy the The UE establishes the QoS requirement of the E-RAB, but can meet the requirement of the downlink throughput of the UE on the source cell.
  • the target base station allocates resources or reserves resources (including radio resources, according to the throughput of the UE on the downlink of the source cell. Hardware resources and S1 interface transport layer bandwidth resources).
  • the idle resources of the target base station are sufficient to ensure the uplink and downlink throughput of the UE (upstream 300 kbps, downlink 400 kbps), so the access control is successful.
  • Step 503 The target base station sends a handover request acknowledgement signaling to the source base station, where the handover request acknowledgement signaling includes resource information allocated by the target base station to the UE.
  • Step 504 After receiving the handover request acknowledgement signaling, the source base station sends a handover command to the UE.
  • the source base station transmits a handover command to the UE by using the RRC connection reconfiguration carrying the mobility control information.
  • Step 505 The UE receives the handover command, obtains synchronization with the target cell, initiates random access in the target cell, and sends handover completion signaling to the target base station.
  • the target base station After receiving the handover completion signaling sent by the UE, the target base station triggers the core network to complete the handover of the network side path, so that the UE can continue to perform services.
  • the target base station cannot meet the QoS requirements of the E-RAB established by the UE.
  • the access control is implemented according to the throughput of the UE in the source cell, and resources are allocated or reserved for the handover failure caused by insufficient resources. If the handover fails, and the signal quality of the source cell measured by the UE is poor, it is possible to interrupt the connection of the UE, which affects the user's feeling.
  • An access control system at the time of handover includes: an access control unit, where the access control unit is configured to: when the target network side receives the handover signaling from the source network side, according to the UE's throughput in the source cell The amount, or the QoS parameter of the E-RAB, implements access control; wherein the throughput of the UE in the source cell is included in the handover signaling.
  • the throughput of the UE in the source cell includes: the throughput of the UE in the uplink of the source cell, and/or the throughput of the UE in the downlink of the source cell.
  • the throughput of the UE in the uplink of the source cell includes: a total packet capacity received by the receiving UE divided by a quotient of the length of time for receiving the UE to send the data packet, or an average packet capacity sent by the receiving UE within a period of time.
  • the throughput of the UE in the downlink of the source cell includes: the total packet capacity transmitted to the UE divided by the quotient of the length of time for transmitting the data packet to the UE, or the average packet capacity sent to the UE within a period of time.
  • the period of time is configured by default by the protocol or by the source network side.
  • the access control unit is further configured to allocate or reserve resources for the UE according to the UE performing the access control in the throughput of the source cell or the QoS parameter of the E-RAB.
  • the access control unit at this time includes the following specific implementations:
  • the access control unit is further configured to: when the throughput of the UE in the source cell is less than or equal to the GBR or the MBR in the QoS parameter of the E-RAB, where the target network side is in accordance with the UE
  • the throughput of the source cell implements access control, and allocates or reserves resources for the UE.
  • the access control unit is further configured to: when the throughput of the UE in the source cell is greater than the GBR in the QoS parameter of the E-RAB, the target network side is configured according to the QoS of the E-RAB.
  • the parameter implements access control, and allocates or reserves resources for the UE in the throughput of the source cell when the resource allows.
  • Specific implementation 3 When the QoS parameters of the E-RAB in the handover signaling do not include the GBR and the MBR, the target network side performs access control according to the throughput of the UE in the source cell, and allocates or reserves the UE for the UE. Resources.
  • Specific implementation 4 When the target cell included in the handover signaling cannot meet the throughput of the UE in the source cell, the target network side selects, for the UE, a target cell that meets the throughput requirement of the UE in the source cell. .
  • Specific implementation 5 When the throughput of the UE in the source cell is greater than the GBR in the QoS parameter of the E-RAB, the target network side performs access control according to the throughput of the source cell in the UE, and the UE's throughput in the source cell is the UE. Allocate or reserve resources.
  • RRC connection reconfiguration is represented by RRC Connection Reconfiguration
  • mobility control information is represented by mobilityControlInfo
  • handover request is represented by Handover Request
  • handover requirement is represented by Handover Required
  • handover request acknowledgement is handled by Handover Request Acknowledge indicates
  • handover completion is represented by RRC Connection Reconfiguration Complete
  • enhanced relocation request is represented by Enhanced Relocation Request
  • handover command is represented by Handover Command.

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Abstract

本发明公开了一种切换时的接入控制方法及系统，其中方法包括：源网络侧向目标网络侧发送切换信令；所述切换信令包括用户设备UE在源小区的吞吐量；目标网络侧收到所述切换信令后，依据所述UE在源小区的吞吐量、或无线接入承载E-RAB的服务质量QoS参数实施接入控制。采用本发明，考虑到UE在源小区实际的吞吐量，由于依据所述UE在源小区的吞吐量、或E-RAB的QoS参数实施接入控制，因此，能按照UE的实际业务需求进行接入控制，从而不会影响到用户的体验。

Description

一种切换时的接入控制方法及系统 技术领域
本发明涉及切换技术， 尤其涉及一种切换时的接入控制方法及系统。 背景技术
在移动通信系统中， 为了满足移动性要求， 当用户设备（UE , User
Equipment )在服务'〗、区即源小区与网络建立连接之后， UE 仍然需要对其 服务小区和相邻小区的信号质量进行测量， 以便选择更为合适的小区进行 切换。 在切换过程中， 目标小区需要对该 UE实施接入控制， 在资源允许的 情况下， 允许该 UE的切换请求， 具体的切换流程如图 1所示， 此处以演进 全球陆地无线接入网络 （EUTRAN , Evolved Universal Terrestrial Radio Access Network )为例， 图 1的切换流程包括以下步骤：
步骤 101 ,在服务小区即源小区处于连接状态的 UE依据测量配置执行 测量， 当 UE测得满足上报条件的相邻小区时， UE向源小区所属的源基站 上报测量报告。
这里， 测量报告是指相邻小区的信号质量高于服务小区的预定偏移量 的测量报告、 或相邻小区的信号质量高于预定门限的测量报告。
步骤 102, 源小区所属的源基站收到测量报告后， 做出切换决策， 需要 将 UE切换到相邻基站即目标基站所在的目标小区，源基站向目标基站发送 切换请求。
这里， 源基站和目标基站之间存在 X2接口。 在切换请求中包含 UE建 立的无线接入承载（E-RAB, E-UTRAN Radio Access Bearer ) 的服务质量 ( QoS, Quality of Service )参数。
步骤 103 , 目标基站收到切换请求后， 依据切换请求中包含的 QoS参 数执行接入控制， 在资源允许的情况下， 允许该 UE的切换， 为该 UE分配 资源。
步骤 104,目标基站向源基站发送切换请求确认，包含分配的资源信息。 步骤 105 , 源基站收到切换请求确认后， 向 UE发送切换命令。
这里， 在现有的 LTE系统， 源基站通过 RRC连接重配置消息携带移动 控制信息 （ mobilityControllnfo ) 向 UE发送切换命令。
步骤 106, UE取得与目标小区的同步， 在目标小区发起随机接入， 向 目标基站发送切换完成信令， 至此， UE切换到目标小区。
在上述切换流程的步骤 103中，目标基站依据 UE建立的 E-RAB的 QoS 参数实施接入控制时， QoS 参数包括 QoS 类别标识 （QCI , QoS Class Identifier )、 分配和保留优先级 ( ARP, Allocation and Retention Priority )„ 如果 UE建立的 E-RAB是保证比特速率（ GBR, Guaranteed Bit Rate )业务， 则 QoS参数还需包括上行的 GBR和下行的 GBR、 以及上行和下行的最大 比特速率 （ MBR, Maximum Bit Rate ), 该 MBR可以大于或等于该 GBR。 其中， 所述 GBR还可以称为保证比特率； 所述 MBR还可以称为最大比特 率。
现有技术中，由于在目标基站实施接入控制时未考虑 UE在源小区实际 的吞吐量， 从而导致以下问题：
一种情况是：当目标基站发现 UE建立的是 GBR业务时，需要根据 GBR 实施接入控制，而由于在此接入控制过程中并没有考虑 UE在源小区实际的 吞吐量（ Throughput ) , 这里的 Throughput也可以理解为流量， 因此， 如果 该 UE实际的吞吐量超过 GBR, 则目标基站只能按照 GBR实施接入控制， 并为 UE分配资源， 从而导致的问题是： UE在切换后业务速率大大降低， 影响到用户的体验；另一种情况是：如果目标基站发现 UE建立的是非 GBR 业务， 由于目标基站没有考虑 UE在源小区实际的吞吐量而实施接入控制， 从而导致的问题是： 过多或过少的为该 UE分配资源或预留资源， 当为该 UE过多的分配资源时将导致资源浪费， 而为该 UE过少的分配资源将导致 UE切换后业务速率大大降低， 也同样会影响到用户的体验。 总之， 现有技 术中在实施接入控制时， 由于未考虑 UE在源小区实际的吞吐量， 因此无法 按照 UE的实际业务需求进行接入控制，从而影响到用户的体验。 目前迫切 需要一种改进的接入控制方案。 发明内容
有鉴于此， 本发明的主要目的在于提供一种切换时的接入控制方法及 系统， 能按照 UE的实际业务需求进行接入控制，从而不会影响到用户的体 验。
为解决上述技术问题， 本发明的技术方案是这样实现的：
一种切换时的接入控制方法， 包括：
源网络侧向目标网络侧发送切换信令； 所述切换信令包括用户设备 UE 在源小区的吞吐量；
目标网络侧收到所述切换信令后，依据所述 UE在源小区的吞吐量、或 无线接入承载 E-RAB的月良务质量 QoS参数实施接入控制。
其中， 所述 UE在源小区的吞吐量包括： UE在源小区上行的吞吐量、 和 /或 UE在源小区下行的吞吐量。
其中， 所述 UE在源小区上行的吞吐量包括： 接收 UE发送的总的数据 包容量除以接收 UE发送数据包的时间长度之商、或一段时间内接收 UE发 送的平均数据包容量。
其中， 所述 UE在源小区下行的吞吐量包括： 向 UE发送的总的数据包 容量除以向 UE发送数据包的时间长度之商、或一段时间内向 UE发送的平 均数据包容量。
其中， 所述一段时间由协议默认配置或由所述源网络侧配置。 其中， 该方法还包括： 所述依据 UE在源小区的吞吐量、 或 E-RAB的 QoS参数实施所述接入控制时， 为所述 UE分配或预留资源。
其中， 当所述 UE在源小区的吞吐量小于或等于所述 E-RAB的 QoS参 数中的保证比特率 GBR或最大比特率 MBR时， 所述实施所述接入控制时 为所述 UE分配或预留资源具体包括： 所述目标网络侧依据所述 UE在源小 区的吞吐量实施接入控制， 为所述 UE分配或预留资源； 或者，
当 UE在源小区的吞吐量大于 E-RAB的 QoS参数中的 GBR时， 所述 实施所述接入控制时为所述 UE分配或预留资源具体包括：所述目标网络侧 依据所述 E-RAB的 QoS参数实施接入控制，在资源允许的情况下， 以所述 UE在源小区的吞吐量为所述 UE分配或预留资源； 或者，
当切换信令中 E-RAB的 QoS参数不包括 GBR和 MBR时， 所述实施 所述接入控制时为所述 UE分配或预留资源具体包括：所述目标网络侧依据 所述 UE在源小区的吞吐量实施接入控制， 为所述 UE分配或预留资源； 或 者，
当切换信令中包含的目标小区不能满足所述 UE在源小区的吞吐量时， 所述实施所述接入控制时为所述 UE分配或预留资源具体包括：所述目标网 络侧为所述 UE选择满足所述 UE在源小区的吞吐量需求的目标小区；或者， 当所述 UE在源小区的吞吐量大于所述 E-RAB的 QoS参数中的 GBR 时，所述实施所述接入控制时为所述 UE分配或预留资源具体包括： 所述目 标网络侧依据所述 UE在源小区的吞吐量实施接入控制，为所述 UE分配或 预留资源。
一种切换时的接入控制系统， 包括： 接入控制单元， 用于目标网络侧 收到来自于源网络侧的切换信令的情况下，依据 UE在源小区的吞吐量、或 E-RAB的 QoS参数实施接入控制； 其中， 所述 UE在源小区的吞吐量包括 在所述切换信令中。 其中， 所述 UE在源小区的吞吐量包括： UE在源小区上行的吞吐量、 和 /或 UE在源小区下行的吞吐量。
其中， 所述 UE在源小区上行的吞吐量包括： 接收 UE发送的总的数据 包容量除以接收 UE发送数据包的时间长度之商、或一段时间内接收 UE发 送的平均数据包容量。
其中， 所述 UE在源小区下行的吞吐量包括： 向 UE发送的总的数据包 容量除以向 UE发送数据包的时间长度之商、或一段时间内向 UE发送的平 均数据包容量。
其中， 所述一段时间由协议默认配置或由所述源网络侧配置。
其中， 所述接入控制单元， 进一步用于依据 UE在源小区的吞吐量、 或
E-RAB的 QoS参数实施所述接入控制时， 为所述 UE分配或预留资源。
其中， 所述接入控制单元，进一步用于当所述 UE在源小区的吞吐量小 于或等于所述 E-RAB的 QoS参数中的 GBR或 MBR时 , 所述目标网络侧 依据所述 UE在源小区的吞吐量实施接入控制，为所述 UE分配或预留资源； 或者，
当 UE在源小区的吞吐量大于 E-RAB的 QoS参数中的 GBR时， 所述 目标网络侧依据所述 E-RAB的 QoS参数实施接入控制，在资源允许的情况 下， 以所述 UE在源小区的吞吐量为所述 UE分配或预留资源； 或者，
当切换信令中 E-RAB的 QoS参数不包括 GBR和 MBR时， 所述目标 网络侧依据所述 UE在源小区的吞吐量实施接入控制，为所述 UE分配或预 留资源； 或者，
当切换信令中包含的目标小区不能满足所述 UE在源小区的吞吐量时， 所述目标网络侧为所述 UE选择满足所述 UE在源小区的吞吐量需求的目标 小区； 或者，
当所述 UE在源小区的吞吐量大于所述 E-RAB的 QoS参数中的 GBR 时，所述实施所述接入控制时为所述 UE分配或预留资源具体包括： 所述目 标网络侧依据所述 UE在源小区的吞吐量实施接入控制，为所述 UE分配或 预留资源。
本发明的源网络侧向目标网络侧发送切换信令；切换信令包括 UE在源 小区的吞吐量； 目标网络侧收到切换信令后， 依据 UE在源小区的吞吐量、 或 E-RAB的 QoS参数实施接入控制。
釆用本发明， 考虑到 UE在源小区实际的吞吐量， 由于依据所述 UE在 源小区的吞吐量、 或 E-RAB的 QoS参数实施接入控制， 因此， 能按照 UE 的实际业务需求进行接入控制， 从而不会影响到用户的体验。 附图说明
图 1为现有技术中 LTE系统的 UE切换流程示意图；
图 2为本发明实施例一切换流程的示意图；
图 3为本发明实施例二切换流程的示意图；
图 4为本发明实施例三切换流程的示意图。 具体实施方式
本发明的基本思想是： 源网络侧向目标网络侧发送切换信令； 切换信 令包括 UE在源小区的吞吐量； 目标网络侧收到切换信令后， 依据 UE在源 小区的吞吐量、 或 E-RAB的 QoS参数实施接入控制。
下面结合附图对技术方案的实施作进一步的详细描述。
本发明的方案， 由于考虑到 UE在源小区实际的吞吐量， 因此， 能按照 UE 的实际业务需求进行接入控制， 从而不会影响到用户的体验。 能按照 UE的实际业务需求进行接入控制，那么在接入控制时为 UE进行资源分配， 就更具合理性， 也更符合用户时间业务需求， 从而使得用户体验得到很大 的提高。 一种切换时的接入控制方法， 主要包括以下内容：
源网络侧向目标网络侧发送的切换信令中， 包含 UE在源小区的吞吐 量，目标网络侧收到所述切换信令后，依据 UE在源小区的吞吐量、或 E-RAB 的 QoS参数实施接入控制。 这里的 UE在源小区的吞吐量指 UE在源小区 实际的吞吐量， 不作赘述。
进一步的 , 依据 UE在源小区的吞吐量、 或 E-RAB的 QoS参数实施所 述接入控制时， 为所述 UE分配或预留资源。
进一步的， 所述 UE在源小区的吞吐量包括： UE在源小区上行的吞吐 量、 和 /或 UE在源小区下行的吞吐量。
进一步的， 所述 UE在源小区上行的吞吐量包括： 接收 UE发送的总的 数据包容量除以接收 UE发送数据包的时间长度之商、 或一段时间内接收 UE发送的平均数据包容量。
进一步的， 所述 UE在源小区下行的吞吐量包括： 向 UE发送的总的数 据包容量除以向 UE发送数据包的时间长度之商、或一段时间内向 UE发送 的平均数据包容量。
进一步的， 所述一段时间由协议默认配置或由源网络侧配置。
进一步的， 依据 UE在源小区的吞吐量、 或 E-RAB的 QoS参数实施接 入控制时， 为 UE分配或预留资源包括以下几种情况：
情况一： 当 UE在源小区的吞吐量小于或等于 E-RAB的 QoS参数中的 GBR或 MBR时 ,所述目标网络侧依据 UE在源小区的吞吐量实施接入控制 , 依据 UE在源小区的吞吐量为所述 UE分配或预留资源。
情况二： 当 UE在源小区的吞吐量大于 E-RAB的 QoS参数中的 GBR 时， 所述目标网络侧依据 E-RAB的 QoS参数实施接入控制，在资源允许的 情况下， 以所述 UE在源小区的吞吐量为所述 UE分配或预留资源。
情况三： 当切换信令中 E-RAB的 QoS参数不包括 GBR和 MBR时， 所述目标网络侧依据 UE在源小区的吞吐量实施接入控制，为所述 UE分配 或预留资源。
情况四：当切换信令中包含的目标小区不能满足 UE在源小区的吞吐量 时，所述目标网络侧为所述 UE选择满足所述 UE在源小区的吞吐量需求的 目标小区。
情况五： 当 UE在源小区的吞吐量大于 E-RAB的 QoS参数中的 GBR 时， 所述目标网络侧依据 UE在源小区的吞吐量实施接入控制， 依据 UE在 源小区的吞吐量为所述 UE分配或预留资源。
进一步的， 针对所述源网络侧而言， 在 LTE系统中所述源网络侧指源 基站； 在 WCDMA系统中所述源网络侧指源无线网络控制器。
进一步的， 针对所述目标网络侧而言， 在 LTE系统中所述目标网络侧 指目标基站； 在 WCDMA系统中所述目标网络侧指目标无线网络控制器。
进一步的， 针对所述切换信令而言， 在 LTE系统中所述切换信令指切 换请求或切换需求； 在 WCDMA系统中所述切换信令指重定位请求或重定 位需求。
进一步的， 该方法还包括： 所述目标网络侧向所述源网络侧返回切换 命令或重定位命令， 源网络侧向所述 UE发送切换命令 , 触发 UE切换到目 标小区。
综上所示，釆用本发明， 目标网络侧能够依据 UE实际的业务需求实施 接入控制， 在实施接入控制时为 UE分配资源， 从而避免 UE在切换前后出 现吞吐量变化的场景， 增强了用户的体验。
为使本发明的目的、 技术方案和优点更加清楚， 以下结合附图对本发 明进行举例阐述。 需要说明的是， 在不冲突的情况下， 本发明中的实施例 及实施例中的特征可以相互组合。
实施例一： LTE系统中 ,基站 1和基站 2之间存在 Χ2接口，基站 1所辖小区（ Cell 1和 Cell 2 )与基站 2所辖小区（ Cell 3和 Cell 4 )互为邻区关系。 基站 1和 基站 2为 LTE系统中任意的两个基站。
UE在 Cell 1 (服务小区、或源小区）中处于连接状态， UE建立的 E-RAB 是 GBR业务， 其上下行的 GBR均为 500kbps (千比特 /秒）， 其上下行的 MBR均为 800kbps。
UE在 Cell 1按照基站 1发送的测量配置实施测量， 上报满足上报条件 的测量对象。 某个时刻， UE向基站 1上报相邻小区 （Cell 3和 Cell 4 ) 的 信号质量比服务小区 （Cell l ) 的信号质量高预定的偏移量， 基站 1收到测 量报告后， 做出切换决策， 切换的目标小区为 Cell 3。 基站 1实施切换决策 需要考虑多个因素如服务小区的信号质量、 目标小区的信号质量、 目标小 区的负荷等， 这属于现有技术， 此处不详细描述。 本实施例中， 基站 1 为 源基站， 基站 2为目标基站， 切换的具体流程如图 2所示， 包括以下步骤： 步骤 201 , 源基站向目标基站发送切换请求信令。
这里， 在该切换请求信令中包含目标小区的标识、 UE 建立的 E-RAB 的标识、 QoS 参数以及在源小区的配置信息等。 为了实现本发明， 切换请 求信令中还携带 UE在源小区的吞吐量。 这里， UE在源小区的吞吐量也可 以称为 UE在源小区的流量，本发明并不限定于此处的具体名称，只要是能 实现本发明同样功能的有关名称都在本发明的保护范围内， 不作赘述。
这里， 源基站在 UE建立 E-RAB后， 需要一直检测 UE的吞吐量， 吞 吐量大小可以用单位时间内向 UE发送（下行）、 或接收 UE发送（上行） 的数据包的容量表示，对于下行，具体的可以表示为向 UE发送的总的数据 包容量（或大小） /向 UE发送数据包的时间长度， 单位是比特 /秒； 对于上 行， 具体的可以表示为接收 UE发送的总的数据包容量 /接收 UE发送数据 包的时间长度， 单位是比特 /秒。 源基站检测获得 UE的上行、 和 /或下行吞 吐量后， 在切换请求中包含该参数， 需要新增信元表示 UE的上行和 /或下 行的吞吐量。 本实施例中， UE上下行的吞吐量分别为 600kbps和 700kbps。 其中， 所述 UE的上行、 和 /或下行吞吐量指三种情况， 分别为： UE的上行 吞吐量； UE的下行吞吐量； UE的上行吞吐量和 UE的下行吞吐量。
步骤 202, 目标基站收到切换请求信令后， 依据 UE在源小区的吞吐量 实施接入控制， 以 UE在源小区的吞吐量为该 UE分配资源。
这里， 由于切换请求信令中包含 UE建立 E-RAB的 QoS参数以及 UE 上下行的吞吐量， 且 UE上、 下行的吞吐量分别大于其上下行的 GBR, 目 标基站依据 UE在源小区的吞吐量实施接入控制， 依据 UE在源小区上、 下 行的吞吐量为 UE分配资源、 或预留资源 （包括无线资源、 硬件资源以及 S1接口传输层带宽资源）。 本实施例中， 目标基站空闲的资源足够保证 UE 上、下行的吞吐量（上行 600kbps, 下行 700kbps ), 因此接入控制是成功的。
步骤 203 , 目标基站向源基站发送切换请求确认信令， 该切换请求确认 信令包含目标基站为 UE分配的资源信息。
步骤 204, 源基站收到切换请求确认信令后， 向 UE发送切换命令。 这里， 源基站通过 RRC连接重配置携带移动控制信息向 UE发送切换 命令。
步骤 205 , UE收到切换命令， 取得与目标小区的同步， 在目标小区发 起随机接入， 向目标基站发送切换完成信令。
这里， 目标基站收到 UE发来的切换完成信令后，将触发核心网完成网 络侧路径的切换， 以便该 UE能够继续开展业务。
本实施例中，目标基站根据 UE在源小区的上下行的吞吐量进行资源分 配， 这主要是因为 UE开展的业务在一段时间内具有相关性， 即 UE切换前 的吞吐量与切换后的吞吐量存在很大的相关性（吞吐量相近）， 因此目标基 站根据 UE实际的吞吐量为 UE分配资源， 保证 UE不因为切换的影响导致 业务吞吐量降低， 增强了用户的体验。 本实施例还有另外一种实现形式， 在步骤 202中， 目标基站收到切换请求信令后， 依据 UE所建立 E-RAB的 QoS参数实施接入控制， 以 UE在源小区的吞吐量为该 UE分配资源； 其他 步骤与本实施例相同。
本实施例应用于 LTE系统， 对于 WCDMA系统， 本发明所述方法同样 适用。 在 WCDMA 系统中， UE 所在的源无线网络控制器（SRNC )检测 UE在源小区的吞吐量， UE切换时， SRNC通过 lur接口向目标无线网络控 制器（ TRNC )发送的增强重定位请求中包含 UE在源小区的吞吐量， TRNC 根据 UE建立的 E-RAB的 QoS参数和 UE在源小区的吞吐量实施接入控制、 分配资源。
实施例二：
LTE系统中，基站 1和基站 2之间不存在 X2接口，基站 1所辖小区（ Cell 1和 Cell 2 )与基站 2所辖小区（ Cell 3和 Cell 4 )互为邻区关系。 基站 1和 基站 2为 LTE系统中任意的两个基站， 这两个基站均与核心网保持连接。
UE在 Cell 1 (服务小区、或源小区）中处于连接状态， UE建立的 E-RAB 是非 GBR业务。
UE在 Cell 1按照基站 1发送的测量配置实施测量， 上报满足上报条件 的测量对象。 某个时刻， UE向基站 1上报相邻小区 （Cell 3和 Cell 4 ) 的 信号质量比服务小区 （Cell l ) 的信号质量高预定的偏移量， 基站 1收到测 量报告后， 做出切换决策， 切换的目标小区为 Cell 3。 本实施例中， 基站 1 为源基站， 基站 2为目标基站， 切换的具体流程如图 3所示， 包括以下步 骤：
步骤 301 , 源基站向核心网发送切换需求信令。
这里， 该切换需求信令包含目标小区的标识、 在源小区的配置信息等。 为了实现本发明， 切换需求信令中还携带 UE在源小区的吞吐量。 这里， 源基站在 UE建立 E-RAB后， 需要一直检测 UE的吞吐量， 吞 吐量大小可以用单位时间内向 UE发送（下行）、 或接收 UE发送（上行） 的数据包的容量表示，对于下行，具体的可以表示为向 UE发送的总的数据 包容量 /向 UE发送数据包的时间长度， 单位是比特 /秒； 对于上行， 具体的 可以表示为接收 UE发送的总的数据包容量 /接收 UE发送数据包的时间长 度， 单位是比特 /秒。 源基站检测获得 UE的上行和 /或下行吞吐量后， 在切 换需求信令中包含该参数， 需要新增信元表示 UE的上行和 /或下行的吞吐 量。 本实施例中， UE上下行的吞吐量分别为 300kbps和 500kbps。
步骤 302,核心网收到切换需求信令后，向目标基站发送切换请求信令。 在该切换请求信令中包含目标小区的标识、 UE建立的 E-RAB的标识、 QoS参数以及在源小区的配置信息等。切换请求信令中还携带 UE在源小区 的吞吐量。 核心网拥有 UE建立的 E-RAB的标识和对应的 QoS参数， 在切 换请求信令中将包含这部分参数。
步骤 303 , 目标基站收到切换请求后， 依据 UE在源小区的吞吐量实施 接入控制， 为该 UE分配资源。
这里， 由于 UE建立的 E-RAB是非 GBR业务， 目标基站仅凭 QoS参 数无法确切获知为该 UE分配资源的大小 （或预留资源的大小）， 鉴于切换 请求中包含 UE在源小区的吞吐量， 目标基站依据 QoS参数和 UE在源小 区上下行的吞吐量实施接入控制， 以及为 UE分配资源、 或预留资源（包括 无线资源、 硬件资源以及 S1接口传输层带宽资源）。 本实施例中， 目标基 站空闲的资源足够保证 UE上下行的吞吐量（上行 300kbps,下行 500kbps ), 因此接入控制是成功的。 特别的， 如果目标小区是载波聚合 （carrier aggregation ) 的小区 （由多个分量载波组成的小区）， 目标基站依据 UE在 源小区上下行的吞吐量为 UE分配资源包括选择载波、 或分配载波的个数。
步骤 304, 目标基站向核心网发送切换请求确认信令， 该切换请求确认 信令包含目标基站为 UE分配的资源信息。
步骤 305 , 核心网向源基站发送切换命令。
步骤 306,源基站收到核心网发来的切换命令后，向 UE发送切换命令。 这里， 源基站通过 RRC连接重配置携带移动控制信息向 UE发送切换 命令。
步骤 307, UE收到切换命令， 取得与目标小区的同步， 在目标小区发 起随机接入， 向目标基站发送切换完成信令。
这里， 目标基站收到 UE发来的切换完成信令后， 将通知核心网该 UE 已经切换到目标基站。
本实施例应用于 LTE系统， 对于 WCDMA系统， 本发明所述方法同样 适用。 在 WCDMA系统中， 如果 SRNC和 TRNC之间不存在 Iur接口， UE 切换时， SRNC通过核心网向 TRNC发送的重定位请求， 在该请求中携带 UE在源小区的吞吐量。 TRNC根据 UE建立的 E-RAB的 QoS参数和 UE 在源小区的吞吐量实施接入控制、 分配资源。
本实施例中， UE只建立了一个 E-RAB, 如果 UE建立了多个 E-RAB, 源基站检测这多个 E-RAB 的上下行吞吐量， 在切换时将检测到的这多个 E-RAB 的上下行吞吐量通过切换信令发送给目标基站， 目标基站根据 E-RAB的 QoS参数以及 UE的上下行吞吐量进行接入控制、 分配资源。 特 别的， 如果 UE建立的多个 E-RAB中存在相同的 QCI、 或 ARP , 基站计算 具有相同 QCI或 ARP的 E-RAB的总的吞吐量， 在切换信令中包含所述总 的吞吐量， 目标基站对于具有相同 QCI或 ARP的 E-RAB统一实施接入控 制、 资源分配。 此处上行、 下行的总的吞吐量是分别计算的， 目标基站实 施接入控制时需要分别满足上行、 下行的总的吞吐量。
实施例三：
LTE系统中，基站 1和基站 2之间存在 X2接口，基站 1所辖小区（ Cell 1和 Cell 2 ) 与基站 2所辖小区 （Cell 3、 Cell 4和 Cell 5 )互为邻区关系。 基站 1和基站 2为 LTE系统中任意的两个基站。
UE在 Cell 1 (服务小区、或源小区）中处于连接状态， UE建立的 E-RAB 是 GBR业务， 其上下行的 GBR均为 500kbps (千比特 /秒）， 其上下行的 MBR均为 900kbps。
UE在 Cell 1按照基站 1发送的测量配置实施测量， 上报满足上报条件 的测量对象。 某个时刻， UE向基站 1上报相邻小区 （Cell 3、 Cell 4和 Cell 5 ) 的信号质量比服务小区 （Cell 1 ) 的信号质量高预定的偏移量， 基站 1 收到测量报告后， 做出切换决策， 切换的目标小区为 Cell 3。 由于 UE测得 Cell 4和 Cell 5的信号质量也很好， 源基站在切换信令中携带 UE在 Cell 4 和 Cell 5的重建信息（ Reestablishmentlnfo ), 该重建信息包括 UE在源小区 的小区无线网络临时标识 （ C-RNTI , Cell Radio Network Temporary Identifier )、 源小区的物理小区标识、 潜在重建的目标小区全局性标识、 UE 在潜在重建的目标小区的加密密钥 KeNB*以及截短消息完整性鉴权码 ( short MAC-I )。 本实施例中， 基站 1为源基站， 基站 2为目标基站， 切换 的具体流程如图 4所示， 包括以下步骤：
步骤 401 , 源基站向目标基站发送切换请求信令。
这里， 在该切换请求信令中包含目标小区的标识、 UE 建立的 E-RAB 的标识、 QoS参数、在源小区的配置信息以及 UE在 Cell 4和 Cell 5的重建 信息等。 为了实现本发明， 切换请求信令中还携带 UE在源小区的吞吐量。
这里， 源基站在 UE建立 E-RAB后， 需要一直检测 UE的吞吐量， 吞 吐量大小可以用单位时间内向 UE发送（下行）、 或接收 UE发送（上行） 的数据包的容量表示， 或者可以表示为一段时间内向 UE发送（下行）、 或 接收 UE发送（上行 )的平均数据包容量， 所述一段时间可以为协议默认配 置或由网络侧 （源基站） 配置。 本实施例中， 源基站检测发送切换信令前 10秒钟内平均吞吐量， 对于下行， 具体的可以表示为源基站发送切换信令 前 10秒内向 UE发送的总的数据包容量（或大小 ) /10秒， 单位是比特 /秒； 对于上行， 具体的可以表示为源基站发送切换信令前 10秒内接收 UE发送 的总的数据包容量 /10秒， 单位是比特 /秒。 源基站检测获得 UE的上行和 / 或下行吞吐量后，在切换请求中包含该参数， 需要新增信元表示 UE的上行 和 /或下行的吞吐量。 本实施例中， UE上下行的吞吐量分别为 600kbps和 700kbps„
步骤 402, 目标基站收到切换请求信令后， 依据 UE在源小区的吞吐量 实施接入控制， 为该 UE分配资源。
这里， 由于切换请求信令中包含 UE建立 E-RAB的 QoS参数以及 UE 上下行的吞吐量， 且 UE上下行的吞吐量大于其上下行的 GBR, 目标基站 发现 Cell 3能够满足 UE建立 E-RAB的 QoS参数需求， 但 Cell 3的资源不 能够满足 UE在源小区上下行的吞吐量的需求，同时目标基站发现 Cell 4的 资源能够满足 UE在源小区上下行的吞吐量的需求，因此目标基站重新设置 切换的目标小区， 选择 Cell 4为目标小区， 并分配资源。 需要说明的是， 在步骤 401中， 切换请求包含 UE在 Cell 4和 Cell 5的重建信息， 因此目标 基站认为 Cell 4和 Cell 5可以成为 UE切换的目标小区， 同时由于重建信息 中包含加密密钥 KeNB* , 因此目标基站能够修改目标小区 （从 Cell 3修改 为 Cell 4 )。
步骤 403 , 目标基站向源基站发送切换请求确认信令， 该切换请求确认 信令包含目标基站为 UE分配的资源信息。
步骤 404, 源基站收到切换请求确认信令后， 向 UE发送切换命令。 这里， 源基站通过 RRC连接重配置携带移动控制信息向 UE发送切换 命令。
步骤 405 , UE收到切换命令， 取得与目标小区的同步， 在目标小区发 起随机接入， 向目标基站发送切换完成信令。
这里， 目标基站收到 UE发来的切换完成信令后，将触发核心网完成网 络侧路径的切换， 以便该 UE能够继续开展业务。
本实施例中， 目标基站根据 UE在源小区的吞吐量为该 UE选择能够满 足所述吞吐量的小区，避免 UE切换后吞吐量降低的现象，增强了用户体验。
实施例四：
LTE系统中，基站 1和基站 2之间存在 X2接口，基站 1所辖小区（ Cell 1和 Cell 2 )与基站 2所辖小区（ Cell 3和 Cell 4 )互为邻区关系。 基站 1和 基站 2为 LTE系统中任意的两个基站。
UE在 Cell 1 (服务小区、或源小区）中处于连接状态， UE建立的 E-RAB 是 GBR业务， 其上下行的 GBR均为 500kbps (千比特 /秒）， 其上下行的 MBR均为 800kbps。
UE在 Cell 1按照基站 1发送的测量配置实施测量， 上报满足上报条件 的测量对象。 某个时刻， UE向基站 1上报相邻小区 （Cell 3和 Cell 4 ) 的 信号质量比服务小区 （Cell 1 ) 的信号质量高预定的偏移量， 基站 1收到测 量报告后， 做出切换决策， 切换的目标小区为 Cell 3。 本实施例中， 基站 1 为源基站， 基站 2为目标基站， 切换的具体流程与图 2所示流程图类似， 包括以下步骤：
步骤 501 , 源基站向目标基站发送切换请求信令。
这里， 在该切换请求信令中包含目标小区的标识、 UE 建立的 E-RAB 的标识、 QoS 参数以及在源小区的配置信息等。 为了实现本发明， 切换请 求信令中还携带 UE在源小区的吞吐量。
这里， 源基站在 UE建立 E-RAB后， 需要一直检测 UE的吞吐量， 吞 吐量大小可以用单位时间内向 UE发送（下行）、 或接收 UE发送（上行） 的数据包的容量表示，对于下行，具体的可以表示为向 UE发送的总的数据 包容量（或大小） /向 UE发送数据包的时间长度， 单位是比特 /秒； 对于上 行， 具体的可以表示为接收 UE发送的总的数据包容量 /接收 UE发送数据 包的时间长度， 单位是比特 /秒。 源基站检测获得 UE的上行和 /或下行吞吐 量后， 在切换请求中包含该参数， 需要新增信元表示 UE的上行和 /或下行 的吞吐量。 本实施例中， UE 实际的吞吐量较低， 上下行的吞吐量分别为 300kbps和 400kbps。
步骤 502, 目标基站收到切换请求信令后， 依据 UE在源小区的吞吐量 实施接入控制， 为该 UE分配资源。
这里， 由于切换请求信令中包含 UE建立 E-RAB的 QoS参数以及 UE 上下行的吞吐量， 且 UE上下行的吞吐量低于其上下行的 GBR, 目标基站 发现 Cell 3的资源不能满足该 UE建立 E-RAB的 QoS需求， 但能够满足 UE在源小区上下行的吞吐量的需求， 目标基站依据 UE在源小区上下行的 吞吐量为 UE分配资源、 或预留资源 （包括无线资源、 硬件资源以及 S1接 口传输层带宽资源）。 本实施例中， 目标基站空闲的资源足够保证 UE上下 行的吞吐量（上行 300kbps , 下行 400kbps ), 因此接入控制是成功的。
步骤 503 , 目标基站向源基站发送切换请求确认信令， 该切换请求确认 信令包含目标基站为 UE分配的资源信息。
步骤 504, 源基站收到切换请求确认信令后， 向 UE发送切换命令。 这里， 源基站通过 RRC连接重配置携带移动控制信息向 UE发送切换 命令。
步骤 505 , UE收到切换命令， 取得与目标小区的同步， 在目标小区发 起随机接入， 向目标基站发送切换完成信令。
目标基站收到 UE发来的切换完成信令后，将触发核心网完成网络侧路 径的切换， 以便该 UE能够继续开展业务。
本实施例中， 目标基站在资源不能满足 UE所建 E-RAB的 QoS需求的 情况下， 依据 UE在源小区的吞吐量实施接入控制， 为其分配或预留资源， 避免因为资源不足导致的切换失败。如果切换失败， 并且 UE测得源小区的 信号质量很差， 有可能使 UE的连接中断， 影响了用户的感受。
一种切换时的接入控制系统， 该系统包括： 接入控制单元， 接入控制 单元用于目标网络侧收到来自于源网络侧的切换信令的情况下， 依据 UE 在源小区的吞吐量、 或 E-RAB的 QoS参数实施接入控制； 其中， UE在源 小区的吞吐量包括在切换信令中。
这里， UE在源小区的吞吐量包括： UE在源小区上行的吞吐量、 和 /或 UE在源小区下行的吞吐量。
这里， UE在源小区上行的吞吐量包括： 接收 UE发送的总的数据包容 量除以接收 UE发送数据包的时间长度之商、或一段时间内接收 UE发送的 平均数据包容量。
这里， UE在源小区下行的吞吐量包括： 向 UE发送的总的数据包容量 除以向 UE发送数据包的时间长度之商、或一段时间内向 UE发送的平均数 据包容量。
这里， 所述一段时间由协议默认配置或由源网络侧配置。
这里，接入控制单元，进一步用于依据 UE在源小区的吞吐量、或 E-RAB 的 QoS参数实施所述接入控制时， 为 UE分配或预留资源。 此时的接入控 制单元包括以下几种具体实现：
具体实现一：接入控制单元，进一步用于当所述 UE在源小区的吞吐量 小于或等于所述 E-RAB的 QoS参数中的 GBR或 MBR时， 所述目标网络 侧依据所述 UE在源小区的吞吐量实施接入控制，为所述 UE分配或预留资 源。
具体实现二：接入控制单元，进一步用于当 UE在源小区的吞吐量大于 E-RAB的 QoS参数中的 GBR时， 所述目标网络侧依据所述 E-RAB的 QoS 参数实施接入控制，在资源允许的情况下， 以所述 UE在源小区的吞吐量为 所述 UE分配或预留资源。
具体实现三： 当切换信令中 E-RAB的 QoS参数不包括 GBR和 MBR 时，所述目标网络侧依据所述 UE在源小区的吞吐量实施接入控制， 为所述 UE分配或预留资源。
具体实现四：当切换信令中包含的目标小区不能满足所述 UE在源小区 的吞吐量时，所述目标网络侧为所述 UE选择满足所述 UE在源小区的吞吐 量需求的目标小区。
具体实现五： 当 UE在源小区的吞吐量大于 E-RAB的 QoS参数中的 GBR时， 目标网络侧依据 UE在源小区的吞吐量实施接入控制 , 以 UE在 源小区的吞吐量为 UE分配或预留资源。
这里， 对以上文字中涉及的中英文进行说明： RRC连接重配置以 RRC Connection Reconfiguration表示；移动控制信息以 mobilityControlInfo表示； 切换请求以 Handover Request表示； 切换需求以 Handover Required表示； 切换请求确认以 Handover Request Acknowledge表示； 切换完成以 RRC Connection Reconfiguration Complete 表示； 增强重定位请求以 Enhanced Relocation Request表示； 切换命令以 Handover Command表示。
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保 护范围。

Claims

权利要求书
1、 一种切换时的接入控制方法， 其特征在于， 包括：
源网络侧向目标网络侧发送切换信令； 所述切换信令包括用户设备 UE 在源小区的吞吐量；
目标网络侧收到所述切换信令后，依据所述 UE在源小区的吞吐量、或 无线接入承载 E-RAB的月良务质量 QoS参数实施接入控制。
2、 根据权利要求 1所述的方法， 其特征在于， 所述 UE在源小区的吞 吐量包括： UE在源小区上行的吞吐量、 和 /或 UE在源小区下行的吞吐量。
3、 根据权利要求 2所述的方法， 其特征在于， 所述 UE在源小区上行 的吞吐量包括：接收 UE发送的总的数据包容量除以接收 UE发送数据包的 时间长度之商、 或一段时间内接收 UE发送的平均数据包容量。
4、 根据权利要求 2所述的方法， 其特征在于， 所述 UE在源小区下行 的吞吐量包括： 向 UE发送的总的数据包容量除以向 UE发送数据包的时间 长度之商、 或一段时间内向 UE发送的平均数据包容量。
5、 根据权利要求 3或 4所述的方法， 其特征在于， 所述一段时间由协 议默认配置或由所述源网络侧配置。
6、 根据权利要求 1至 4任一所述的方法， 其特征在于， 还包括： 所述 依据 UE在源小区的吞吐量、 或 E-RAB的 QoS参数实施所述接入控制时， 为所述 UE分配或预留资源。
7、 根据权利要求 6所述的方法， 其特征在于，
当所述 UE在源小区的吞吐量小于或等于所述 E-RAB的 QoS参数中的 保证比特率 GBR或最大比特率 MBR时， 所述实施所述接入控制时为所述 UE分配或预留资源具体包括： 所述目标网络侧依据所述 UE在源小区的吞 吐量实施接入控制， 为所述 UE分配或预留资源； 或者，
当 UE在源小区的吞吐量大于 E-RAB的 QoS参数中的 GBR时， 所述 实施所述接入控制时为所述 UE分配或预留资源具体包括：所述目标网络侧 依据所述 E-RAB的 QoS参数实施接入控制，在资源允许的情况下， 以所述 UE在源小区的吞吐量为所述 UE分配或预留资源； 或者，
当切换信令中 E-RAB的 QoS参数不包括 GBR和 MBR时， 所述实施 所述接入控制时为所述 UE分配或预留资源具体包括：所述目标网络侧依据 所述 UE在源小区的吞吐量实施接入控制， 为所述 UE分配或预留资源； 或 者，
当切换信令中包含的目标小区不能满足所述 UE在源小区的吞吐量时， 所述实施所述接入控制时为所述 UE分配或预留资源具体包括：所述目标网 络侧为所述 UE选择满足所述 UE在源小区的吞吐量需求的目标小区；或者， 当所述 UE在源小区的吞吐量大于所述 E-RAB的 QoS参数中的 GBR 时，所述实施所述接入控制时为所述 UE分配或预留资源具体包括： 所述目 标网络侧依据所述 UE在源小区的吞吐量实施接入控制，为所述 UE分配或 预留资源。
8、 一种切换时的接入控制系统， 其特征在于， 包括： 接入控制单元， 用于目标网络侧收到来自于源网络侧的切换信令的情况下，依据 UE在源小 区的吞吐量、 或 E-RAB的 QoS参数实施接入控制； 其中， 所述 UE在源小 区的吞吐量包括在所述切换信令中。
9、 根据权利要求 8所述的系统， 其特征在于， 所述 UE在源小区的吞 吐量包括： UE在源小区上行的吞吐量、 和 /或 UE在源小区下行的吞吐量。
10、根据权利要求 9所述的系统， 其特征在于， 所述 UE在源小区上行 的吞吐量包括：接收 UE发送的总的数据包容量除以接收 UE发送数据包的 时间长度之商、 或一段时间内接收 UE发送的平均数据包容量。
11、根据权利要求 9所述的系统， 其特征在于， 所述 UE在源小区下行 的吞吐量包括： 向 UE发送的总的数据包容量除以向 UE发送数据包的时间 长度之商、 或一段时间内向 UE发送的平均数据包容量。
12、 根据权利要求 10或 11所述的系统， 其特征在于， 所述一段时间 由协议默认配置或由所述源网络侧配置。
13、 根据权利要求 8至 11任一所述的系统， 其特征在于， 所述接入控 制单元， 进一步用于依据 UE在源小区的吞吐量、 或 E-RAB的 QoS参数实 施所述接入控制时， 为所述 UE分配或预留资源。
14、 根据权利要求 13所述的系统， 其特征在于， 所述接入控制单元， 具体用于：
当所述 UE在源小区的吞吐量小于或等于所述 E-RAB的 QoS参数中的 GBR或 MBR时，所述目标网络侧依据所述 UE在源小区的吞吐量实施接入 控制， 为所述 UE分配或预留资源； 或者，
当 UE在源小区的吞吐量大于 E-RAB的 QoS参数中的 GBR时， 所述 目标网络侧依据所述 E-RAB的 QoS参数实施接入控制，在资源允许的情况 下， 以所述 UE在源小区的吞吐量为所述 UE分配或预留资源； 或者，
当切换信令中 E-RAB的 QoS参数不包括 GBR和 MBR时， 所述目标 网络侧依据所述 UE在源小区的吞吐量实施接入控制，为所述 UE分配或预 留资源； 或者，
当切换信令中包含的目标小区不能满足所述 UE在源小区的吞吐量时， 所述目标网络侧为所述 UE选择满足所述 UE在源小区的吞吐量需求的目标 小区； 或者，
当所述 UE在源小区的吞吐量大于所述 E-RAB的 QoS参数中的 GBR 时，所述实施所述接入控制时为所述 UE分配或预留资源具体包括： 所述目 标网络侧依据所述 UE在源小区的吞吐量实施接入控制，为所述 UE分配或 预留资源。
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