WO2010105422A1 - 负载信息的获取方法、装置及系统 - Google Patents

负载信息的获取方法、装置及系统 Download PDF

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Publication number
WO2010105422A1
WO2010105422A1 PCT/CN2009/070872 CN2009070872W WO2010105422A1 WO 2010105422 A1 WO2010105422 A1 WO 2010105422A1 CN 2009070872 W CN2009070872 W CN 2009070872W WO 2010105422 A1 WO2010105422 A1 WO 2010105422A1
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WO
WIPO (PCT)
Prior art keywords
cell
rim
target
source
load information
Prior art date
Application number
PCT/CN2009/070872
Other languages
English (en)
French (fr)
Inventor
郭春琪
陈燕燕
国炜
吕博雅
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.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN200980157973.3A priority Critical patent/CN102369758B/zh
Priority to JP2012500031A priority patent/JP5243658B2/ja
Priority to EP09841706A priority patent/EP2403294A4/en
Priority to PCT/CN2009/070872 priority patent/WO2010105422A1/zh
Publication of WO2010105422A1 publication Critical patent/WO2010105422A1/zh
Priority to US13/235,891 priority patent/US8494545B2/en
Priority to US13/790,448 priority patent/US20140086207A1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/22—Performing reselection for specific purposes for handling the traffic
    • 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
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network

Definitions

  • the present invention relates to the field of mobile communication technologies, and in particular, to a method, device and system for acquiring load information. Background technique
  • LTE Long Term Evolution
  • E-UTRAN Evolved Universal Mobile Telecommunication System Territorial Radio Access Network
  • SAE System Architecture Evolution
  • EPC Evolved Packet Core
  • the EPS network only provides packets because some operators want to provide voice services by the traditional 2/3G radio access network and Circuit (CS) domain core network after deploying the EPS network.
  • Packet Switching (PS) domain data service access the EPS network coexists with the traditional 2/3G circuit domain core network for a period of time.
  • PS Packet Switching
  • UE User Equipment
  • GSM Global System for Mobile Communications
  • EDGE Enhanced Data Rate for GSM Evolution
  • the 2/3G radio access network of the Radio Access Network (GERAN), UTRAN, etc. accesses the CS domain core network, and can also access the EPC through the E-UTRAN.
  • the source access control device to which the source cell belongs in the source radio access technology system may use a redirection request (RELOCATION REQUIRED) message and a redirection command.
  • RELOCATION REQUIRED a redirection request
  • RELOCATION COMMAND Message or redirect preparation failed
  • RELOCATION PREPARATION FAILURE Message and target None
  • the access control device to which the target cell belongs in the line access technology system interacts.
  • the source radio access technology system when performing PS domain handover between different radio access technology systems, or before performing CS domain or PS domain handover between different radio access technology systems, the source radio access technology system cannot obtain the target radio access technology.
  • the load information of the system makes it impossible to load balance between different wireless access technology systems, so that the communication quality of the system cannot be guaranteed.
  • the embodiment of the invention provides a method, a device and a system for acquiring load information, which are used to implement the source wireless access technology system to obtain the load information of the target wireless access technology system, so that different wireless access technology systems can be implemented.
  • Load balancing ensures the communication quality of the system.
  • the embodiment of the invention provides a method for acquiring load information, including:
  • the source access control device to which the source cell belongs When performing the PS domain handover between different radio access technologies, the source access control device to which the source cell belongs sends a radio access technology system handover request message to the target access control device to which the target cell belongs through the core network;
  • the radio access technology system receives, by the source access control device, a radio access technology inter-system handover response message returned by the target access control device according to the radio access technology inter-system handover request message, the radio access technology system
  • the inter-switch response message carries the load information of the target cell.
  • An embodiment of the present invention provides another method for acquiring load information, including:
  • the source access control device to which the source cell belongs Before performing the inter-system handover of different radio access technologies, the source access control device to which the source cell belongs sends a load information request message based on the RIM mechanism to the target access control device to which the target cell belongs through the core network;
  • the source access control device receives the RIM mechanism-based load information response message returned by the target access control device according to the RIM mechanism-based load information request message, and the RIM mechanism-based load information response The message carries the load information of the target cell.
  • An embodiment of the present invention further provides an access control device, including:
  • a first sending module configured to send, by using a core network, a radio access technology inter-system handover request message to a target access control device to which the target cell belongs when performing a PS domain handover between different radio access technologies;
  • a first receiving module configured to receive the target access control device according to the wireless access technology system
  • the inter-system handover request message is transmitted through the radio access technology inter-system handover response message returned by the core network, where the inter-system handover response message carries the load information of the target cell.
  • the embodiment of the invention further provides another access control device, including:
  • the third sending module is configured to send, by using the core network, a load information request message based on a RAN information management (RIM Information Management, RIM for short) mechanism, to the target access control device to which the target cell belongs before performing inter-system handover between different radio access technologies.
  • RAN information management RIM Information Management
  • a third receiving module configured to receive, by the target access control device, a RIM mechanism-based load information response message returned by the core network according to the RIM mechanism-based load information request message, and the RIM mechanism-based load information response The message carries the load information of the target cell.
  • the embodiment of the present invention further provides a load information acquisition system, including a first source access control device to which a source cell belongs in a source radio access technology system, and a first target connection to which a target cell belongs in a target radio access technology system.
  • a load information acquisition system including a first source access control device to which a source cell belongs in a source radio access technology system, and a first target connection to which a target cell belongs in a target radio access technology system.
  • the first source access control device is configured to send a radio access technology intersystem handover request message to the first target access control device to which the target cell belongs through the core network when performing PS domain handover between different radio access technologies. And receiving, by the first target access control device, a radio access technology inter-system handover response message returned by the core network, where the inter-system handover response message carries the load information of the target cell;
  • the first target access control device is configured to receive a radio access technology inter-system handover request message sent by the first source access control device to which the source cell belongs, and access the first source through the core network.
  • the control device returns the inter-system handover response message of the radio access technology.
  • the embodiment of the present invention further provides another load information acquisition system, including a second source access control device to which the source cell belongs in the source radio access technology system and a second target to which the target cell belongs in the target radio access technology system.
  • another load information acquisition system including a second source access control device to which the source cell belongs in the source radio access technology system and a second target to which the target cell belongs in the target radio access technology system.
  • the second source access control device Before the second source access control device is configured to perform inter-system handover between different radio access technologies, send a load information request message based on the RIM mechanism to the second target access control device to which the target cell belongs through the core network, and the receiving station The RIM mechanism-based load information response message that is sent by the second target access control device by the core network, where the load information response message of the RIM mechanism carries the load information of the target cell;
  • the source access control device and the target access control device in the embodiment of the present invention can interact with each other by using a message related to the handover between the wireless access technologies, and implement the PS domain between different wireless access technologies.
  • the source radio access technology system can obtain the load information of the target radio access technology system, so that load balancing between different radio access technology systems can be performed, and the communication quality of the system can be ensured.
  • the ingress control device and the target access control device may also interact with the load information request message based on the RIM mechanism to interact with the load information response message based on the RIM mechanism, and implement source wireless access technology before switching between different wireless access technologies.
  • the system can obtain the load information of the target radio access technology system, so that load balancing between different radio access technology systems can be performed, and the communication quality of the system can be guaranteed.
  • FIG. 1 is a schematic flowchart of a method for acquiring load information according to Embodiment 1 of the present invention
  • FIG. 2 is a schematic flowchart of a method for acquiring load information according to Embodiment 2 of the present invention
  • FIG. 4 is a schematic flowchart of a method for acquiring load information according to Embodiment 4 of the present invention
  • FIG. 5 is a schematic flowchart of loading information provided by Embodiment 5 of the present invention
  • FIG. 6 is a schematic flowchart of a method for acquiring load information according to Embodiment 6 of the present invention
  • FIG. 7 is a schematic flowchart of a method for acquiring load information according to Embodiment 7 of the present invention
  • FIG. 1 is a schematic flowchart of a method for acquiring load information according to Embodiment 1 of the present invention
  • FIG. 2 is a schematic flowchart of a method for acquiring load information according to Embodiment 2 of the present invention
  • FIG. 4 is
  • FIG. 9 is a schematic flowchart diagram of another method for acquiring load information according to Embodiment 9 of the present invention
  • FIG. 10 is a schematic flowchart of a method for acquiring load information according to Embodiment 9 of the present invention
  • FIG. 11 is another load information obtained according to Embodiment 11 of the present invention.
  • a schematic process flow FIG. 12 is a schematic flow of another method for obtaining the load information according to an embodiment of the present invention, twelve
  • FIG. 13 is a schematic flowchart of another method for acquiring load information according to Embodiment 13 of the present invention
  • FIG. 14 is a schematic flowchart of another method for acquiring load information according to Embodiment 14 of the present invention
  • FIG. 16 is a schematic structural diagram of another access control device according to Embodiment 16 of the present invention
  • FIG. 17 is a schematic structural diagram of another access control device according to Embodiment 17 of the present invention
  • FIG. 18 is a schematic structural diagram of another access control device according to Embodiment 18 of the present invention
  • FIG. 19 is a schematic diagram of acquiring load information according to Embodiment 19 of the present invention
  • FIG. 20 is a schematic structural diagram of another load information acquisition system according to Embodiment 20 of the present invention.
  • the load information of the target cell in the target radio access technology system referred to in this specification is abbreviated as the load information of the target radio access technology system; similarly, the load information of the source cell in the source radio access technology system is Abbreviated as the load information of the source wireless access technology system.
  • FIG. 1 is a schematic flowchart of a method for acquiring load information according to Embodiment 1 of the present invention. As shown in FIG. 1, the method for acquiring load information in this embodiment may include the following steps:
  • Step 101 When performing PS domain handover between different radio access technologies, the source access control device to which the source cell belongs in the source radio access technology system connects to the target to which the target cell belongs in the target radio access technology system through the core network.
  • the ingress control device sends a radio access technology intersystem handover request message.
  • Step 102 The source access control device receives the radio access technology system that the target access control device returns through the core network according to the radio access technology intersystem handover request message.
  • the inter-system handover response message carries the load information of the target cell.
  • the source radio access technology system and the target radio access technology system in this embodiment may be any two of GERAN, UTRAN, and E-UTRAN, and their corresponding access control devices are respectively a base station system (Base Station System, Referred to as BSS), Radio Network Controller (RNC) and evolved Node B (eNB).
  • BSS Base Station System
  • RNC Radio Network Controller
  • eNB evolved Node B
  • the bearer of the load information of the target cell may be implemented by using a Transparent Container (Information Element, referred to as IE) carried in a related message of the inter-system handover between the radio access technologies;
  • IE Transparent Container
  • the source access control device and the target access control device can interact with each other through the related information of the wireless access technology system switching, and realize the source wireless connection when performing PS domain switching between different wireless access technology systems.
  • the incoming technology system can obtain the load information of the target wireless access technology system, so that load balancing between different wireless access technology systems can be performed, and the communication quality of the system can be guaranteed.
  • the handover-related messages of the access control device in each radio access technology system interact with the core network are different. The specific process can be described in detail through the following six embodiments of the present invention.
  • FIG. 2 is a schematic flowchart of a method for acquiring load information according to Embodiment 2 of the present invention. As shown in FIG. 2, this embodiment is applicable to a scenario in which a PS domain is switched from a UTRAN to an E-UTRAN.
  • the method for obtaining information may include the following steps:
  • Step 201 The source RNC to which the source cell belongs to the serving GPRS support node (Serving GPRS)
  • the support node sends a request relocation (RELOCATION REQUIRE) message, where the request relocation message carries the first transparent container cell, and the first transparent container cell carries the load information cell of the active cell. ;
  • Step 202 The SGSN receives the requesting relocation message, and sends a first handover request (HANDOVER REQUEST) message to the target eNB to which the target cell belongs, where the first handover request message carries the first transparent container cell;
  • HANDOVER REQUEST a first handover request
  • Step 203 The target eNB receives the first handover request message, and returns a handover request response (HANDOVER REQUEST ACKNOWLEDGE) message to the SGSN, where the handover request response message carries a second transparent transmission container cell, and the second transparent transmission container letter The element carries the load information cell of the target cell;
  • HANDOVER REQUEST ACKNOWLEDGE handover request response
  • Step 204 The SGSN receives the handover request response message, and returns a first relocation command (RELOCATION COMMAND) message to the source RNC, where the first relocation command message carries the second transparent container cell.
  • RELOCATION COMMAND a first relocation command
  • the first transparent container cell in this embodiment may be a transparent container for inter-system information.
  • the (Inter-System Information Transparent Container) cell may also be a source-to-target transparent container (Source eNB To Target eNB Transparent Container) cell; similarly, the second transparent container cell may be a transparent information between systems.
  • the Inter-System Information Transparent Container (CFC) can also be a Target eNB To Source eNB Transparent Container (PB).
  • the load information information cell of the source cell and the load information cell of the target cell carried in the second transparent transmission container cell carried in the first transparent transmission container cell are used to perform different wireless access technology systems.
  • the interaction of the load information enables the UTRAN and the E-UTRAN to obtain the load information of the peer system when performing the inter-system PS domain handover of the UTRAN to E-UTRAN radio access technology, so that different radio access technologies can be performed.
  • Load balancing between systems ensures the communication quality of the system.
  • FIG. 3 is a schematic flowchart of a method for acquiring load information according to Embodiment 3 of the present invention. As shown in FIG. 3, this embodiment is applicable to a scenario in which a PS domain is switched from a UTRAN to a GERAN, and the load information of this embodiment is used.
  • the acquisition method can include the following steps:
  • Step 301 The source RNC to which the source cell belongs sends a request relocation message to the SGSN, where the request relocation message carries the first transparent container cell, and the first transparent container cell carries the load information information of the active cell. Yuan
  • Step 302 The SGSN receives the foregoing request relocation message, and sends a first PS domain handover request (PS-HANDOVER-REQUEST) message to the target BSS to which the target cell belongs, where the first PS domain handover request message carries the first transparent Passing container cells;
  • PS-HANDOVER-REQUEST PS domain handover request
  • Step 303 The target BSS receives the first PS domain handover request message, and returns a PS domain handover request response (PS-HANDOVER-REQUEST-ACKNOWLEDGE) message to the SGSN, where the PS domain handover request response message carries the second transparent transmission container. a cell, where the second transparent container cell carries a load information cell of the target cell;
  • Step 304 The SGSN receives the PS domain handover request response message, and returns a second relocation command message to the source RNC, where the second relocation command message carries the second transparent container cell.
  • the first transparent container cell in this embodiment may be an Inter-System Information Transparent Container (Cell) of the inter-system information, and may also be a source to the destination.
  • Cell Inter-System Information Transparent Container
  • the load information information cell of the source cell and the load information cell of the target cell carried in the second transparent transmission container cell carried in the first transparent transmission container cell are used to perform different wireless access technology systems.
  • the interaction of the load information enables the UTRAN and GERAN to obtain the load information of the peer system when performing the PS domain handover between the UTRAN and GERAN radio access technologies, so that the load between different wireless access technology systems can be performed. Balanced, can guarantee the communication quality of the system.
  • FIG. 4 is a schematic flowchart of a method for acquiring load information according to Embodiment 4 of the present invention. As shown in FIG. 4, this embodiment is applicable to a scenario in which a PS domain is switched from an E-UTRAN to a UTRAN.
  • the method for obtaining information may include the following steps:
  • Step 401 The source eNB to which the source cell belongs sends a request handover message to the SGSN, where the HANDOVER REQUIRE message carries the first transparent container cell, where the first transparent container cell carries the load of the active cell.
  • Step 402 The SGSN receives the requesting handover message, and sends a first relocation request (RELOCATION REQUEST) message to the target RNC to which the target cell belongs, where the first relocation request message carries the first transparent container cell;
  • RELOCATION REQUEST a first relocation request
  • Step 403 The target RNC receives the first relocation request message, and returns a RELOCATION REQUEST ACKNOWLEDGE message to the SGSN, where the relocation request response message carries a second transparent container cell, and the second transparent
  • the transport container cell carries the load information cell of the target cell;
  • Step 404 The SGSN receives the relocation request response message, and returns a first handover command (HANDOVER COMMAND) message to the source eNB, where the first handover command message carries the second transparent container cell.
  • HANDOVER COMMAND first handover command
  • the first transparent container cell in this embodiment may be an Inter-System Information Transparent Container (Cell) of the inter-system information, and may also be a source-to-target transparent container (Source RNC To Target RNC Transparent Container). ) cell; Similarly, the second transparent container cell may be an Inter-System Information Transparent Container cell or a target RNC To Source RNC Transparent Container letter. yuan.
  • Cell Inter-System Information Transparent Container
  • Source RNC To Target RNC Transparent Container Source RNC To Target RNC Transparent Container
  • the second transparent container cell may be an Inter-System Information Transparent Container cell or a target RNC To Source RNC Transparent Container letter. yuan.
  • the load information information cell of the source cell and the load information cell of the target cell carried in the second transparent transmission container cell carried in the first transparent transmission container cell are used to perform different wireless access technology systems.
  • the interaction of the load information enables the E-UTRAN and the UTRAN to obtain the load information of the peer system when performing the inter-system PS domain handover of the E-UTRAN to UTRAN radio access technology, so that different radio access technologies can be performed.
  • Load balancing between systems ensures the communication quality of the system.
  • FIG. 5 is a schematic flowchart of a method for acquiring load information according to Embodiment 5 of the present invention. As shown in FIG. 5, this embodiment is applicable to a scenario in which a PS domain is switched from GERAN to UTRAN, and the load information of this embodiment is used.
  • the acquisition method can include the following steps:
  • Step 501 The source BSS to which the source cell belongs sends a PS domain request handover message to the SGSN, where the PS-HANDOVER-REQUIRE message carries the first transparent container cell, and the first transparent container cell a load information cell carrying an active cell;
  • Step 502 The SGSN receives the foregoing PS domain request handover message, and sends a second relocation request message to the target RNC to which the target cell belongs, where the second relocation request message carries the first transparent container.
  • Step 503 The target RNC receives the second relocation request message, and returns a relocation request response message to the SGSN, where the relocation request response message carries a second transparent container cell, where the second transparent container cell is included. Carrying a load information cell with a target cell;
  • Step 504 The SGSN receives the relocation request response message, and returns a first PS domain request handover response (PS-HANDOVER-REQUIRE-ACK) message to the source BSS, where the first PS domain requires the handover response message to carry the second Transparent container cells.
  • PS-HANDOVER-REQUIRE-ACK PS domain request handover response
  • the first transparent container cell in this embodiment may be a transparent container for inter-system information.
  • the (Inter-System Information Transparent Container) cell may also be a source RNC To Target RNC Transparent Container cell; similarly, the second transparent container cell may be a transparent information between systems.
  • Inter-System Information Transparent Container CFC
  • CFC Inter-System Information Transparent Container
  • the load information information cell of the source cell and the load information cell of the target cell carried in the second transparent transmission container cell carried in the first transparent transmission container cell are used to perform different wireless access technology systems.
  • the interaction of the load information enables the GERAN and the UTRAN to obtain the load information of the peer system when performing the PS-domain handover between the GERAN and the UTRAN radio access technologies, so that the load between different wireless access technology systems can be performed. Balanced, can guarantee the communication quality of the system.
  • FIG. 6 is a schematic flowchart of a method for acquiring load information according to Embodiment 6 of the present invention. As shown in FIG. 6, the embodiment is applicable to a scenario in which a PS domain is switched from GERAN to E-UTRAN.
  • the method for obtaining information may include the following steps:
  • Step 601 The source BSS to which the source cell belongs sends a PS domain request handover message to the SGSN, where the PS domain request handover message carries the first transparent transmission container cell, where the first transparent transmission container cell carries the load of the active cell.
  • Information cell
  • Step 602 The SGSN receives the PS domain request handover message, and sends a second handover request message to the target eNB to which the target cell belongs, where the second handover request message carries the first transparent container cell.
  • Step 603 The target eNB receives the second handover request message, and returns a handover request response message to the SGSN.
  • the handover request response message carries a second transparent container cell, where the second transparent container cell carries a target.
  • Step 604 The SGSN receives the handover request response message, and returns a second message to the source BSS.
  • the PS domain requires a handover response message, and the second PS domain requires the handover message to carry the second transparent container cell.
  • the first transparent container cell in this embodiment may be a transparent container for inter-system information.
  • the (Inter-System Information Transparent Container) cell may also be a source-to-target transparent container (Source eNB To Target eNB Transparent Container) cell; similarly, the second transparent container cell may be a transparent information between systems.
  • the Inter-System Information Transparent Container (CFC) can also be a Target eNB To Source eNB Transparent Container (PB).
  • the load information cell and the source cell of the source cell carried in the first transparent transmission container cell are used.
  • the load information information cell of the target cell carried in the second transparent container cell carries out the interaction of load information between different wireless access technology systems, and realizes the PS domain between the wireless access technology systems of GERAN to E-UTRAN.
  • GERAN and E-UTRAN can obtain the load information of the peer system, so that load balancing between different wireless access technology systems can be performed, and the communication quality of the system can be guaranteed.
  • FIG. 7 is a schematic flowchart of a method for acquiring load information according to Embodiment 7 of the present invention. As shown in FIG. 7, the embodiment is applicable to a scenario in which a PS domain is switched from an E-UTRAN to a GERAN, and the load in this embodiment is used.
  • the method for obtaining information may include the following steps:
  • Step 701 The source eNB to which the source cell belongs sends a request handover message to the SGSN, where the request handover message carries a first transparent transmission container cell, where the first transparent transmission container cell carries a load information cell of the active cell;
  • Step 702 The SGSN receives the requesting handover message, and sends a second PS domain handover request message to the target BSS to which the target cell belongs, where the second PS domain handover request message carries the first transparent container.
  • Step 703 The target BSS receives the second PS domain handover request message, and returns a PS domain handover request response message to the SGSN, where the PS domain handover request response message carries the second transparent transmission container cell, and the second transparent transmission container The cell carries the load information cell of the target cell;
  • Step 704 The SGSN receives the PS domain handover request response message, and returns a second handover command message to the source eNB, where the second handover command message carries the second transparent transmission container cell.
  • the first transparent container cell in this embodiment may be a transparent container for inter-system information.
  • the (Inter-System Information Transparent Container) cell may also be a source BSS To Target BSS Transparent Container cell; similarly, the second transparent container cell may be a transparent information between systems.
  • the Inter-System Information Transparent Container cell can also be a Target BSS To Source BSS Transparent Container cell.
  • the load information information cell of the source cell and the load information cell of the target cell carried in the second transparent transmission container cell carried in the first transparent transmission container cell are used to perform different wireless access technology systems.
  • the interaction of the load information enables E-UTRAN and GERAN to obtain the negative of the peer system when performing the PS-domain handover between the E-UTRAN and GERAN radio access technologies.
  • the information is loaded so that load balancing between different wireless access technology systems can be performed, and the communication quality of the system can be guaranteed.
  • Embodiment 2 of the present invention - Embodiment 7 of the present invention is a scenario in which the handover is successful, and those skilled in the art should be able to [easily think that the embodiment of the present invention may further be a handover failure scenario, that is, the first The delivery of the two transparent container cells is carried by a response message indicating a failure, and details are not described herein again.
  • the method for obtaining the load information provided in Embodiment 1 to Embodiment 7 of the present invention requires the source access control device to initiate a handover process before the source access control device and the target access control device can perform the process.
  • the interaction of the load information, at this time, the load information of the target cell acquired by the source access control device cannot avoid the handover failure caused by the excessive load of the target access control device, and can only be used as the next successful handover. Ensure that load balancing between different wireless access technology systems is performed to ensure the communication quality of the system.
  • FIG. 8 is a schematic flowchart of another method for acquiring load information according to Embodiment 8 of the present invention. As shown in FIG. 8, the method for acquiring load information in this embodiment may include the following steps:
  • Step 801 Before performing the inter-system handover between different radio access technologies, the source access control device to which the source cell belongs in the source radio access technology system passes the core network to the target access control device to which the target cell belongs in the target radio access technology system. Sending a load information request message based on the RIM mechanism;
  • Step 802 The source access control device receives, according to the RIM mechanism-based load information request message, the RIM mechanism-based load information response message returned by the core network, The load information response message based on the RIM mechanism carries the load information of the target cell.
  • the source radio access technology system and the target radio access technology system in this embodiment may be any two of GERAN, UTRAN, and E-UTRAN, and their corresponding access control devices are separated into two types: BSS, RNC, and eNB.
  • the source access control device may send a load information request message based on the RIM mechanism to the target access control device by using an event, for example: when the load of the source cell is greater than 60%, the source cell belongs to the source cell.
  • the source access control device reports a preset event to trigger the source access control device to send a load information request message based on the RIM mechanism to the target access control device through the core network; the source access control device is triggered after a preset time period.
  • Target access control through the core network The device sends a load information request message based on the RIM mechanism.
  • the source access control device and the target access control device may interact with the load information request message based on the RIM mechanism by using a load information request message based on the RIM mechanism, so as to implement switching between different wireless access technologies before the system is switched.
  • the source radio access technology system can obtain the load information of the target radio access technology system, so that load balancing between different radio access technology systems can be performed, and the communication quality of the system can be guaranteed.
  • the number of target cells in the method for acquiring load information may be one, or may be multiple. Specifically, it may be indicated by carrying a cell identifier of one target cell requested or a cell identity list of a plurality of target cells in the transmitted RIM mechanism-based load information request message.
  • the core network After receiving the RIM mechanism-based load information request message carrying the cell identifier list of the multiple target cells, the core network respectively finds the corresponding target cell according to the target cell identifier in the cell identifier list.
  • each target access control device returns a RIM mechanism-based load information response message carrying the load information of the respective target cell to the source access control device to which the source cell belongs through the core network.
  • the source access control device and the plurality of target access control devices interact with the RIM mechanism-based load information response message through the RIM mechanism-based load information request message, and implement the source before switching between different wireless access technologies.
  • the wireless access technology system can acquire the load information of multiple target radio access technology systems, so that the target cell can be further selected according to the load information of multiple cells to perform load balancing between different radio access technology systems. Further ensure the communication quality of the system.
  • the embodiment may be implemented by using an SGSN (PS domain) of the core network or a Mobile Switching Center (MSC) (CS domain).
  • PS domain PS domain
  • MSC Mobile Switching Center
  • the load information request message and the load information response message are transparently transmitted.
  • FIG. 9 is a schematic flowchart of another method for acquiring load information according to Embodiment 9 of the present invention. As shown in FIG. 9, the embodiment is applicable to a scenario for switching from UTRAN to E-UTRAN.
  • the method for obtaining load information of the example may include the following steps:
  • Step 901 The source RNC to which the source cell belongs sends a first direct information transmission (DIRECT INFORMATION TRANSFER) message to the SGSN or the MSC, where the first direct information transmission message carries the first inter-system information transmission type cell, and the foregoing first system
  • the first information transmission type cell carries a first RIM Transfer (RIM Transfer) cell, and the first RIM transmission cell carries a load information cell of the active cell;
  • Step 902 The SGSN or the MSC receives the first direct information transmission message, and sends a first MME DIRECT INFORMATION TRANSFER message to the target eNB to which the target cell belongs, where the first MME direct information transmission message carries the foregoing First inter-system information transmission type cell;
  • Step 903 The target eNB receives the first MME direct information transmission message, and returns an eNB DIRECT INFORMATION TRANSFER message to the SGSN or the MSC, where the eNB direct information transmission message carries the second intersystem information transmission type message.
  • the second inter-system information transmission type cell carries the second RIM transmission cell, where the second RIM transmission cell carries the load information cell of the target cell;
  • Step 904 The SGSN or the MSC receives the eNB direct information transmission message, and returns a second direct information transmission message to the source RNC, where the second direct information transmission message carries the second inter-system information transmission type information.
  • the load information cell of the source cell carried in the first RIM transmission cell and the load information cell of the target cell carried in the second RIM transmission cell perform load between different wireless access technology systems.
  • the interaction of the information enables the UTRAN and the E-UTRAN to obtain the load information of the peer system before performing the UTRAN to E-UTRAN radio access technology system handover, so that load balancing between different radio access technology systems can be performed. , can guarantee the communication quality of the system.
  • FIG. 10 is a schematic flowchart of another method for acquiring load information according to Embodiment 10 of the present invention. As shown in FIG. 10, this embodiment is applicable to a scenario in which a handover is performed from a UTRAN to a GERAN, and the load information is acquired in this embodiment.
  • the method can include the following steps:
  • Step 1001 The source RNC to which the source cell belongs sends a first direct information transmission message to the SGSN or the MSC, where the first direct information transmission message carries the first inter-system information transmission type letter.
  • the first inter-system information transmission type cell carries the first RIM transmission cell, where the first RIM transmission cell carries the load information cell of the active cell;
  • Step 1002 The SGSN or the MSC receives the first direct information transmission message, and sends a first RIM protocol data unit transmission request related (RIM-PDU-TRANSFER.req) message to the target BSS to which the target cell belongs, where the first RIM protocol data is sent.
  • the unit transmission request related message carries a first RIM container cell (RIM Container), and the first RIM container cell carries a load information cell of the active cell;
  • Step 1003 The target BSS receives the first RIM protocol data unit transmission request related message, and returns a first RIM protocol data unit transmission indication related (RIM-PDU-TRANSFER.ind) message to the SGSN or the MSC, where the first RIM protocol data is used.
  • the unit transmission indication related message carries a second RIM container cell, where the second RIM container cell carries a load information cell of the target cell;
  • Step 1004 The SGSN or the MSC receives the first RIM protocol data unit transmission indication related message, and returns a third direct information transmission message to the source RNC, where the third direct information transmission message carries the third intersystem information transmission type cell.
  • the third inter-system information transmission type cell carries a third RIM transmission cell, where the third RIM transmission cell carries a load information cell of the target cell.
  • the first RIM protocol data unit transmission request related message in this embodiment may include a RAN information request protocol data unit (RAN-INFORMATION-REQUEST PDU) message, etc.; the first RIM protocol data unit transmission indication related message may include RAN information protocol data. Unit (RAN-INFORMATION PDU) message, etc.
  • RAN-INFORMATION-REQUEST PDU RAN information request protocol data unit
  • the first RIM protocol data unit transmission indication related message may include RAN information protocol data. Unit (RAN-INFORMATION PDU) message, etc.
  • the first RIM transmission cell, the load information cell of the source cell and the second RIM container cell carried in the first RIM container cell, and the load of the target cell carried in the third RIM transmission cell are used.
  • the information cell interacts with the load information of different radio access technology systems, so that UTRAN and GERAN can obtain the load information of the peer system before performing the UTRAN-to-GERAN radio access technology system handover, so that the information can be performed.
  • Load balancing between different wireless access technology systems can ensure the communication quality of the system.
  • FIG. 11 is a schematic flowchart of another method for acquiring load information according to Embodiment 11 of the present invention. As shown in FIG. 11, the embodiment is applicable to a scenario for switching from E-UTRAN to UTRAN.
  • the method for acquiring load information in this embodiment may include the following steps:
  • Step 1101 The source eNB to which the source cell belongs sends an eNB direct information transmission message to the SGSN or the MSC, where the eNB direct information transmission message carries the second inter-system information transmission type cell, and the second inter-system information transmission type cell Carrying a second RIM transmission cell, where the second RIM transmission cell carries a load information cell of the active cell;
  • Step 1102 The SGSN or the MSC receives the eNB direct information transmission message, and sends a second direct information transmission message to the target RNC to which the target cell belongs, where the second direct information transmission message carries the second inter-system information transmission type cell. ;
  • Step 1103 The target RNC receives the second direct information transmission message, and returns a first direct information transmission message to the SGSN or the MSC, where the first direct information transmission message carries the first inter-system information transmission type cell, where the first The inter-system information transmission type cell carries the first RIM transmission cell, where the first RIM transmission cell carries the load information cell of the target cell; Step 1104, the SGSN or the MSC receives the first direct information transmission message. And returning, to the source eNB, the first MME direct information transmission message, where the first MME direct information transmission message carries the first inter-system information transmission type cell.
  • the load information cell of the source cell carried in the second RIM transmission cell and the load information cell of the target cell carried in the first RIM transmission cell perform load between different wireless access technology systems.
  • the interaction of the information enables the E-UTRAN and the UTRAN to obtain the load information of the peer system before the handover of the radio access technology system of the E-UTRAN to the UTRAN, so that load balancing between different radio access technology systems can be performed. , can guarantee the communication quality of the system.
  • FIG. 12 is a schematic flowchart of another method for acquiring load information according to Embodiment 12 of the present invention. As shown in FIG. 12, the embodiment is applicable to a scenario of switching from GERAN to UTRAN, and the load information of this embodiment is
  • the acquisition method can include the following steps:
  • Step 1201 The source BSS to which the source cell belongs sends a second RIM protocol data unit transmission request related message to the SGSN or the MSC, where the second RIM protocol data unit transmission request related message carries the third RIM container cell, and the third RIM Carrying load information cells of the active cell in the container cell;
  • Step 1202 The SGSN or the MSC receives the foregoing RIM protocol data unit transmission request. Correlating a message, sending a third direct information transmission message to the target RNC to which the target cell belongs, where the third direct information transmission message carries a third inter-system information transmission type cell, where the third inter-system information transmission type cell carries There is a third RIM transmission cell, where the third RIM transmission cell carries a load information cell of the active cell;
  • Step 1203 The target RNC receives the foregoing third direct information transmission message, to the SGSN or
  • the MSC returns a first direct information transmission message, where the first direct information transmission message carries a first inter-system information transmission type cell, and the first inter-system information transmission type cell carries a first RIM transmission cell,
  • the first RIM transmission cell carries the load information cell of the target cell;
  • Step 1204 the SGSN or the MSC receives the first direct information transmission message, and returns a second RIM protocol data unit transmission indication related message to the source BSS, where the foregoing
  • the second RIM protocol data unit transmission indication related message carries a fourth RIM container cell, and the fourth RIM container cell carries a load information cell of the target cell.
  • the second RIM protocol data unit transmission request related message in this embodiment may include a RAN information request protocol data unit (RAN-INFORMATION-REQUEST PDU) message, etc.; the second RIM protocol data unit transmission indication related message may include RAN information protocol data. Unit (RAN-INFORMATION PDU) message, etc.
  • RAN-INFORMATION-REQUEST PDU RAN information request protocol data unit
  • the second RIM protocol data unit transmission indication related message may include RAN information protocol data. Unit (RAN-INFORMATION PDU) message, etc.
  • the third RIM container cell the load information cell of the source cell carried in the third RIM transmission cell, and the load of the target cell carried in the first RIM transmission cell and the fourth RIM container cell are used.
  • the information cell interacts with the load information of different radio access technology systems, and realizes that the GERAN and the UTRAN can obtain the load information of the peer system before performing the GERAN to UTRAN radio access technology system handover, so that the information can be performed.
  • Load balancing between different wireless access technology systems can ensure the communication quality of the system.
  • FIG. 13 is a schematic flowchart of another method for acquiring load information according to Embodiment 13 of the present invention. As shown in FIG. 13, the embodiment is applicable to a scenario of switching from GERAN to E-UTRAN, and the load in this embodiment.
  • the method for obtaining information may include the following steps:
  • Step 1301 The source BSS to which the source cell belongs sends a second RIM protocol data unit transmission request related message to the SGSN or the MSC, where the second RIM protocol data unit transmission request related message carries the third RIM container cell, and the third RIM The container cell carries the load information cell of the source cell;
  • Step 1302 The SGSN or the MSC receives the second RIM protocol data unit transmission request related message, and sends a second MME direct information transmission message to the target eNB to which the target cell belongs, where the second MME direct information transmission message carries the third system.
  • the information transmission type cell, the third inter-system information transmission type cell carries a third RIM transmission cell, and the third RIM transmission cell carries a load information cell of the active cell;
  • Step 1303 The target eNB receives the second MME direct information transmission message, and returns an eNB direct information transmission message to the SGSN or the MSC, where the eNB direct information transmission message carries a second inter-system information transmission type cell, and the second system
  • the information transmission type cell carries a second RIM transmission cell, where the second RIM transmission cell carries the load information cell of the target cell;
  • Step 1304 the SGSN or the MSC receives the eNB direct information transmission message, source
  • the BSS returns a third RIM protocol data unit transmission indication related message, where the third RIM protocol data unit transmission indication related message carries a fifth RIM container cell, and the fifth RIM container cell carries the load information information of the target cell. yuan.
  • the second RIM protocol data unit transmission request related message in this embodiment may include a RAN information request protocol data unit (RAN-INFORMATION-REQUEST PDU) message, etc.; the third RIM protocol data unit transmission indication related message may include RAN information protocol data. Unit (RAN-INFORMATION PDU) message, etc.
  • RAN-INFORMATION-REQUEST PDU RAN information request protocol data unit
  • the third RIM protocol data unit transmission indication related message may include RAN information protocol data. Unit (RAN-INFORMATION PDU) message, etc.
  • the third RIM container cell, the load information cell of the source cell and the second RIM transmission cell carried in the third RIM transmission cell, and the load of the target cell carried in the fifth RIM container cell are used.
  • the information cell interacts with the load information of different radio access technology systems, and realizes that GERAN and E-UTRAN can obtain the load information of the peer system before performing the GERAN to E-UTRAN radio access technology system handover. , so that load balancing between different wireless access technology systems can be performed, and the communication quality of the system can be guaranteed.
  • FIG. 14 is a schematic flowchart of another method for acquiring load information according to Embodiment 14 of the present invention. As shown in FIG. 14, the embodiment is applicable to a scenario of switching from E-UTRAN to GERAN, and the load in this embodiment.
  • the method for obtaining information may include the following steps:
  • Step 1401 The source eNB to which the source cell belongs sends an eNB direct information transmission message to the SGSN or the MSC, where the eNB direct information transmission message carries the second inter-system information transmission type cell, and the second inter-system information transmission type cell Carrying a second RIM transmission cell, the above a load information cell carrying an active cell in the second RIM transmission cell;
  • Step 1402 The SGSN or the MSC receives the eNB direct information transmission message, and sends a third RIM protocol data unit transmission request related message to the target BSS to which the target cell belongs, where the third RIM protocol data unit transmission request related message carries the sixth message.
  • a RIM container cell wherein the sixth RIM container cell carries a load information cell of the active cell;
  • Step 1403 The target BSS receives the third RIM protocol data unit transmission request related message, and returns a first RIM protocol data unit transmission indication related message to the SGSN or the MSC, where the first RIM protocol data unit transmission indication related message carries the first message.
  • a second RIM container cell wherein the second RIM container cell carries a load information cell of the target cell;
  • Step 1404 The SGSN or the MSC receives the first RIM protocol data unit transmission indication related message, and returns a second MME direct information transmission message to the source eNB, where the second MME direct information transmission message carries the third intersystem information transmission type.
  • the third RIM transmission cell is carried in the third inter-system information transmission type cell, and the third RIM transmission cell carries the load information cell of the target cell.
  • the third RIM protocol data unit transmission request related message in this embodiment may include a RAN information request protocol data unit (RAN-INFORMATION-REQUEST PDU) message, etc.; the first RIM protocol data unit transmission indication related message may include RAN information protocol data. Unit (RAN-INFORMATION PDU) message, etc.
  • RAN-INFORMATION-REQUEST PDU RAN information request protocol data unit
  • the first RIM protocol data unit transmission indication related message may include RAN information protocol data. Unit (RAN-INFORMATION PDU) message, etc.
  • the second RIM transmission cell, the load information cell of the source cell and the second RIM container cell carried in the sixth RIM container cell, and the load of the target cell carried in the third RIM transmission cell are used.
  • the information cell performs the interaction of the load information between different wireless access technology systems, and realizes that the E-UTRAN and the GERAN can obtain the load information of the peer system before the E-UTRAN to GERAN wireless access technology system is switched. , so that load balancing between different wireless access technology systems can be performed, and the communication quality of the system can be guaranteed.
  • the method for obtaining the load information provided by the embodiment 8 of the present invention to the fourteenth embodiment of the present invention is that the source access control device and the target access control device can be used before the source access control device initiates the handover related process.
  • the load information is obtained, and the load information of the target cell acquired by the source access control device can be used as a guarantee for the successful handover. This can effectively avoid the overload of the target access control device due to the overload of the target access control device. Switching failed, enabling different wireless Load balancing between access technology systems ensures the communication quality of the system.
  • FIG. 15 is a schematic structural diagram of an access control device according to Embodiment 15 of the present invention.
  • the access control device in this embodiment may include a first sending module 151 and a first receiving module 152.
  • the first sending module 151 sends a radio access technology inter-system handover request message to the target access control device to which the target cell belongs by using the core network to perform the PS domain handover between the different radio access technologies
  • the first receiving module 152 sends the inter-system handover request message to the target access control device to which the target cell belongs.
  • the source access control device in the first embodiment of the present invention, the source RNC in the second embodiment of the present invention, the source RNC in the third embodiment of the present invention, the source eNB in the fourth embodiment of the present invention, and the source BSS and the present in the fifth embodiment of the present invention The function of the source eNB in the sixth embodiment of the present invention and the source eNB in the seventh embodiment of the present invention can be implemented by the access control device provided in this embodiment;
  • FIG. 16 is a schematic structural diagram of another access control device according to Embodiment 16 of the present invention.
  • the access control device of this embodiment may include a second receiving module 161 and a second sending module 162.
  • the second receiving module 161 receives the inter-system handover request message of the radio access technology sent by the source access control device to which the source cell belongs, and the second sending module 162 returns the radio connection to the source access control device through the core network.
  • the inter-system inter-system handover response message carries the load information of the target cell under the access control device.
  • the target access control device in the first embodiment of the present invention, the target eNB in the second embodiment of the present invention, the target BSS in the third embodiment of the present invention, the target RNC in the fourth embodiment of the present invention, and the fifth embodiment of the present invention The functions of the target RNC, the target eNB in the sixth embodiment of the present invention, and the target BSS in the seventh embodiment of the present invention can be implemented by the access control device provided in this embodiment.
  • FIG. 17 is a schematic structural diagram of still another access control device according to Embodiment 17 of the present invention.
  • the access control device of this embodiment may include a third sending module 171 and a third receiving module 172.
  • the third sending module 171 sends a load information request message based on the RIM mechanism to the target access control device to which the target cell belongs, before the third sending module 171 performs the inter-system handover of the different radio access technologies, and the third receiving module 172 receives the target connection.
  • the RIM mechanism-based load information response message is carried by the RIM mechanism-based load information response message according to the RIM mechanism-based load information request message, and the load information of the target cell is carried in the RIM mechanism-based load information response message.
  • the source access control device in the eighth embodiment of the present invention, the source RNC in the ninth embodiment of the present invention, the source RNC in the tenth embodiment of the present invention, the source eNB in the eleventh embodiment of the present invention, and the source BSS in the twelfth embodiment of the present invention The function of the source eNB in the thirteenth embodiment of the present invention and the source eNB in the fourteenth embodiment of the present invention can be implemented by the access control device provided in this embodiment.
  • FIG. 18 is a schematic structural diagram of still another access control device according to Embodiment 18 of the present invention.
  • the access control device of this embodiment may include a fourth receiving module 181 and a fourth sending module 182.
  • the fourth receiving module 181 receives the RIM mechanism-based load information request message sent by the source access control device to which the source cell belongs, and the fourth sending module 182 returns the RIM-based mechanism to the source access control device through the core network.
  • the load information response message, the load information response message based on the RIM mechanism carries the load information of the target cell under the access control device.
  • the target access control device in the eighth embodiment of the present invention, the target eNB in the ninth embodiment of the present invention, the target BSS in the tenth embodiment of the present invention, the target RNC in the eleventh embodiment of the present invention, and the target RNC in the twelfth embodiment of the present invention The functions of the target eNB in the thirteenth embodiment of the present invention and the target BSS in the fourteenth embodiment of the present invention can be implemented by the access control device provided in this embodiment.
  • FIG. 19 is a schematic structural diagram of a load information acquisition system according to Embodiment 19 of the present invention.
  • the load information acquisition system in this embodiment may include a source cell in a source radio access technology system.
  • the first source access control device 10 is configured to send a radio access technology inter-system handover request message to the first target access control device 20 to which the target cell belongs through the core network when performing PS-domain handover between different radio access technologies.
  • the first target access control device 20 is configured to receive a radio access technology inter-system handover request message sent by the first source access control device 10 to which the source cell belongs through the core network, and access the control device to the first source through the core network. 10 returns the above-mentioned wireless access technology system inter-system handover response message.
  • the source access control device in the first embodiment of the present invention, the source RNC in the second embodiment of the present invention, the source RNC in the third embodiment of the present invention, the source eNB in the fourth embodiment of the present invention, and the source BSS and the present in the fifth embodiment of the present invention The function of the source BSS in the sixth embodiment of the present invention and the source eNB in the seventh embodiment of the present invention can be implemented by the first source access control device 10 in the load information obtaining system provided in this embodiment;
  • the access control device, the target eNB in the second embodiment of the present invention, the target BSS in the third embodiment of the present invention, the target RNC in the fourth embodiment of the present invention, the target RNC in the fifth embodiment of the present invention, and the target eNB in the sixth embodiment of the present invention The functions of the target BSS in the seventh embodiment of the present invention can be implemented by the first target access control device 20 in the load information acquisition system provided in this embodiment.
  • the source access control device and the target access control device can interact with each other through the related information of the wireless access technology system switching, and realize the source wireless connection when performing PS domain switching between different wireless access technology systems.
  • the incoming technology system can obtain the load information of the target wireless access technology system, so that load balancing between different wireless access technology systems can be performed, and the communication quality of the system can be guaranteed.
  • FIG. 20 is a schematic structural diagram of another load information acquisition system according to Embodiment 20 of the present invention.
  • the load information acquisition system in this embodiment may include a source cell in a source radio access technology system.
  • the second source access control device 30 is configured to send a load information request message based on the RIM mechanism to the second target access control device 40 to which the target cell belongs through the core network before performing inter-system handover between different radio access technologies, and receive the first The second target access control device 40 returns through the core network. Based on the load information response message of the RIM mechanism, the load information response message based on the RIM mechanism carries the load information of the target cell.
  • the second target access control device 40 receives the RIM mechanism-based load information request message sent by the source access control device to which the source cell belongs through the core network, and returns the foregoing RIM-based mechanism to the second source access control device 30 through the core network. Load information response message.
  • the source access control device in the eighth embodiment of the present invention, the source RNC in the ninth embodiment of the present invention, the source RNC in the tenth embodiment of the present invention, the source eNB in the eleventh embodiment of the present invention, and the source BSS in the twelfth embodiment of the present invention The function of the source BSS in the thirteenth embodiment of the present invention and the source eNB in the fourteenth embodiment of the present invention can be implemented by the second source access control device 30 in the load information obtaining system provided in this embodiment;
  • the function of the target eNB in the thirteenth embodiment and the target BSS in the fourteenth embodiment of the present invention can be implemented by the second target access control device 40 in the load information acquisition system provided in
  • the source access control device and the target access control device may interact with the load information request message based on the RIM mechanism by using a load information request message based on the RIM mechanism, so as to implement switching between different wireless access technologies before the system is switched.
  • the source radio access technology system can obtain the load information of the target radio access technology system, so that load balancing between different radio access technology systems can be performed, and the communication quality of the system can be guaranteed.

Description

负载信息的获取方法、 装置及系统 技术领域
本发明涉及移动通信技术领域， 特别涉及一种负载信息的获取方法、 装 置及系统。 背景技术
在网絡向宽带化、 移动化发展的过程中， 第三代合作伙伴计划 （3rd Generation Partnership Program, 简称 3GPP )组织分别在移动接入网提出 了长期演进（Long Term Evolution , 简称 LTE )方案即演进通用移动通信系 统 ( UMTS )陆地无线接入网（ Evolved Universal Mobile Telecommunication System Territorial Radio Access Network, 简称 E-UTRAN )、 以及在移动核 心网提出了系统架构演进（ System Architecture Evolution , 简称 SAE )方案 即演进分组核心网 （Evolved Packet Core, 简称 EPC )。 LTE/SAE架构中， 由于某些运营商希望在部署 EPS网絡后仍然由传统的 2/3G无线接入网和电 路（Circuit Switching, 简称 CS )域核心网提供语音业务， EPS网絡只提供 分组（Packet Switching, 简称 PS )域数据业务接入， 在一段时间内 EPS 网絡与传统 2/3G电路域核心网絡共存。 终端 （ User Equipment, 简称 UE ) 可以通过全球移动通信系统 ( Global System for Mobile Communications, 简称 GSM ) /提高数据速率的 GSM演进技术（ Enhanced Data rate for GSM Evolution , 简称 EDGE )无线接入网 ( GSM EDGE Radio Access Network, 简称 GERAN )、 UTRAN等 2/3G无线接入网接入 CS域核心网，还可以通过 E-UTRAN接入 EPC。
为了均衡无线接入网即无线接入技术（ Radio Access Technology, 简称 RAT )系统间的负载， 可以进行不同无线接入技术系统间（ Inter-RAT )切换。 当 UE在 2G/3G无线接入技术系统之间进行 CS域切换时， 源无线接入技术 系统中源小区所属的源接入控制设备可以通过重定向请求 ( RELOCATION REQUIRED ) 消息、 以及重定向命令 ( RELOCATION COMMAND ) 消息或 重定向准备失败（ RELOCATION PREPARATION FAILURE ) 消息与目标无 线接入技术系统中目标小区所属的接入控制设备进行交互。
上述技术方案中， 当进行不同无线接入技术系统间 PS域切换时， 或者 进行不同无线接入技术系统间 CS域或 PS域切换之前， 源无线接入技术系 统无法获取到目标无线接入技术系统的负载信息， 使得无法进行不同无线接 入技术系统间的负载均衡， 从而无法保证系统的通信质量。 发明内容
本发明实施例提供一种负载信息的获取方法、 装置及系统， 用以实现源 无线接入技术系统能够获取到目标无线接入技术系统的负载信息， 使得可以 进行不同无线接入技术系统间的负载均衡， 能够保证系统的通信质量。
本发明实施例提供了一种负载信息的获取方法， 包括：
当进行不同无线接入技术系统间 PS域切换时， 源小区所属的源接入控 制设备通过核心网向目标小区所属的目标接入控制设备发送无线接入技术系 统间切换请求消息；
所述源接入控制设备接收所述目标接入控制设备根据所述无线接入技术 系统间切换请求消息通过核心网所返回的无线接入技术系统间切换响应消息， 所述无线接入技术系统间切换响应消息中携带有所述目标小区的负载信息。
本发明实施例提供了另一种负载信息的获取方法， 包括：
进行不同无线接入技术系统间切换之前， 源小区所属的源接入控制设备 通过核心网向目标小区所属的目标接入控制设备发送基于 RIM机制的负载信 息请求消息；
所述源接入控制设备接收所述目标接入控制设备根据所述基于 RIM机制 的负载信息请求消息通过核心网所返回的基于 RIM机制的负载信息响应消息， 所述基于 RIM机制的负载信息响应消息中携带有所述目标小区的负载信息。
本发明实施例还提供了一种接入控制设备， 包括：
第一发送模块， 用于当进行不同无线接入技术系统间 PS域切换时， 通 过核心网向目标小区所属的目标接入控制设备发送无线接入技术系统间切换 请求消息；
第一接收模块，用于接收所述目标接入控制设备根据所述无线接入技术系 统间切换请求消息通过核心网所返回的无线接入技术系统间切换响应消息，所 述无线接入技术系统间切换响应消息中携带有所述目标小区的负载信息。
本发明实施例还提供了再一种接入控制设备， 包括：
第三发送模块， 用于进行不同无线接入技术系统间切换之前， 通过核心 网向目标小区所属的目标接入控制设备发送基于 RAN 信息管理 ( RAN Information Management, 简称 RIM )机制的负载信息请求消息；
第三接收模块， 用于接收所述目标接入控制设备根据所述基于 RIM机制 的负载信息请求消息通过核心网所返回的基于 RIM机制的负载信息响应消息， 所述基于 RIM机制的负载信息响应消息中携带有所述目标小区的负载信息。
本发明实施例再提供了一种负载信息的获取系统， 包括源无线接入技术 系统中源小区所属的第一源接入控制设备和目标无线接入技术系统中目标小 区所属的第一目标接入控制设备，
所述第一源接入控制设备用于当进行不同无线接入技术系统间 PS域切 换时， 通过核心网向目标小区所属的第一目标接入控制设备发送无线接入技 术系统间切换请求消息， 以及接收所述第一目标接入控制设备通过核心网所 返回的无线接入技术系统间切换响应消息， 所述无线接入技术系统间切换响 应消息中携带有所述目标小区的负载信息；
所述第一目标接入控制设备用于接收源小区所属的第一源接入控制设备 通过核心网发送的无线接入技术系统间切换请求消息， 以及通过核心网向所 述第一源接入控制设备返回所述无线接入技术系统间切换响应消息。
本发明实施例再提供了另一种负载信息的获取系统， 包括源无线接入技 术系统中源小区所属的第二源接入控制设备和目标无线接入技术系统中目标 小区所属的第二目标接入控制设备，
所述第二源接入控制设备用于进行不同无线接入技术系统间切换之前， 通过核心网向目标小区所属的第二目标接入控制设备发送基于 RIM机制的负 载信息请求消息， 以及接收所述第二目标接入控制设备通过核心网所返回的 基于 RIM机制的负载信息响应消息，所述基于 RIM机制的负载信息响应消息 中携带有所述目标小区的负载信息；
所述第二目标接入控制设备接收源小区所属的源接入控制设备通过核心 网发送的基于 RIM机制的负载信息请求消息， 以及通过核心网向所述第二源 接入控制设备返回所述基于 RIM机制的负载信息响应消息。
由上述技术方案可知， 本发明实施例的源接入控制设备与目标接入控制 设备可以通过无线接入技术系统间切换的相关消息进行交互， 实现了当进行 不同无线接入技术系统间 PS域切换时， 源无线接入技术系统能够获取到目 标无线接入技术系统的负载信息， 使得可以进行不同无线接入技术系统间的 负载均衡， 能够保证系统的通信质量； 本发明实施例的源接入控制设备与目 标接入控制设备还可以通过基于 RIM机制的负载信息请求消息与基于 RIM机 制的负载信息响应消息进行交互， 实现了进行不同无线接入技术系统间切换 之前， 源无线接入技术系统能够获取到目标无线接入技术系统的负载信息， 使 得可以进行不同无线接入技术系统间的负载均衡， 能够保证系统的通信质量。 附图说明 施例或现有技术描述中所需要使用的附图作简单地介绍， 显而易见地， 下面 描述中的附图仅仅是本发明的一些实施例， 对于本领域普通技术人员来讲， 在不付出创造性劳动性的前提下， 还可以根据这些附图获得其他的附图。
图 1为本发明实施例一提供的一种负载信息的获取方法的流程示意图； 图 2为本发明实施例二提供的一种负载信息的获取方法的流程示意图； 图 3为本发明实施例三提供的一种负载信息的获取方法的流程示意图； 图 4为本发明实施例四提供的一种负载信息的获取方法的流程示意图； 图 5为本发明实施例五提供的一种负载信息的获取方法的流程示意图； 图 6为本发明实施例六提供的一种负载信息的获取方法的流程示意图； 图 7为本发明实施例七提供的一种负载信息的获取方法的流程示意图； 图 8为本发明实施例八提供的另一种负载信息的获取方法的流程示意图； 图 9为本发明实施例九提供的另一种负载信息的获取方法的流程示意图； 图 10为本发明实施例十提供的另一种负载信息的获取方法的流程示意图； 图 11为本发明实施例十一提供的另一种负载信息的获取方法的流程示意图； 图 12为本发明实施例十二提供的另一种负载信息的获取方法的流程示意图； 图 13为本发明实施例十三提供的另一种负载信息的获取方法的流程示意图； 图 14为本发明实施例十四提供的另一种负载信息的获取方法的流程示意图； 图 15为本发明实施例十五提供的一种接入控制设备的结构示意图； 图 16为本发明实施例十六提供的另一种接入控制设备的结构示意图； 图 17为本发明实施例十七提供的再一种接入控制设备的结构示意图； 图 18为本发明实施例十八提供的又一种接入控制设备的结构示意图； 图 19为本发明实施例十九提供的一种负载信息的获取系统的结构示意图； 图 20为本发明实施例二十提供的另一种负载信息的获取系统的结构示意图。 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。
为了方便描述， 本说明书中涉及的目标无线接入技术系统中目标小区的 负载信息均简写为目标无线接入技术系统的负载信息； 类似地， 源无线接入 技术系统中源小区的负载信息均简写为源无线接入技术系统的负载信息。
图 1为本发明实施例一提供的一种负载信息的获取方法的流程示意图， 如 图 1所示， 本实施例的负载信息的获取方法可以包括以下步骤：
步骤 101、 当进行不同无线接入技术系统间 PS域切换时， 源无线接入技 术系统中源小区所属的源接入控制设备通过核心网向目标无线接入技术系统 中目标小区所属的目标接入控制设备发送无线接入技术系统间切换请求消息； 步骤 102、源接入控制设备接收目标接入控制设备根据上述无线接入技术 系统间切换请求消息通过核心网所返回的无线接入技术系统间切换响应消息， 上述无线接入技术系统间切换响应消息中携带有上述目标小区的负载信息。
本实施例中的源无线接入技术系统与目标无线接入技术系统可以为 GERAN、 UTRAN、 E-UTRAN中的任意两个系统，他们对应的接入控制设备 分别为基站系统（ Base Station System,简称 BSS )、无线网絡控制器（ Radio Network Controller, 简称 RNC )和演进型 Node B ( eNB )。 本实施例中， 上述目标小区的负载信息的承载可以通过无线接入技术系 统间切换的相关消息中所携带的透传容器 （Transparent Container )信元 ( Information Element, 简称 IE )来实现;
本实施例中， 源接入控制设备与目标接入控制设备可以通过无线接入技 术系统间切换的相关消息进行交互， 实现了当进行不同无线接入技术系统间 PS域切换时，源无线接入技术系统能够获取到目标无线接入技术系统的负载 信息， 使得可以进行不同无线接入技术系统间的负载均衡， 能够保证系统的 通信质量。
在进行上述任意两个无线接入技术系统之间的无线接入技术系统间 PS 域切换时， 每个无线接入技术系统中的接入控制设备与核心网进行交互的切 换相关消息均不同，具体流程可以通过下述六个本发明实施例详细进行说明。
图 2为本发明实施例二提供的一种负载信息的获取方法的流程示意图， 如 图 2所示， 本实施例适用于从 UTRAN向 E-UTRAN进行 PS域切换的场景， 本实施例的负载信息的获取方法可以包括以下步骤：
步骤 201、源小区所属的源 RNC向服务 GPRS支持节点（ Serving GPRS
Support Node, 简称 SGSN )发送要求重定位（ RELOCATION REQUIRE ) 消息， 上述要求重定位消息中携带有第一透传容器信元， 上述第一透传容器 信元中携带有源小区的负载信息信元；
步骤 202、 SGSN接收到上述要求重定位消息， 向目标小区所属的目标 eNB发送第一切换请求（HANDOVER REQUEST ) 消息， 上述第一切换请 求消息中携带有上述第一透传容器信元；
步骤 203、 目标 eNB接收到上述第一切换请求消息，向 SGSN返回切换 请求应答（HANDOVER REQUEST ACKNOWLEDGE ) 消息， 上述切换请 求应答消息中携带有第二透传容器信元， 上述第二透传容器信元中携带有目 标小区的负载信息信元；
步骤 204、 SGSN接收到上述切换请求应答消息， 向源 RNC返回第一重 定位命令 ( RELOCATION COMMAND ) 消息， 上述第一重定位命令消息中 携带有上述第二透传容器信元。
本实施例中的第一透传容器信元可以为系统间信息的透传容器 ( Inter-System Information Transparent Container )信元, 还可以为源到目 标的透传容器 ( Source eNB To Target eNB Transparent Container )信元； 类似地， 第二透传容器信元可以为系统间信息的透传容器 （Inter-System Information Transparent Container )信元， 还可以为目标到源的透传容器 ( Target eNB To Source eNB Transparent Container )信元。
本实施例通过第一透传容器信元中所携带的源小区的负载信息信元和第 二透传容器信元中所携带的目标小区的负载信息信元， 进行不同无线接入技 术系统间的负载信息的交互， 实现了当进行 UTRAN到 E-UTRAN的无线接 入技术系统间 PS域切换时， UTRAN与 E-UTRAN能够获取到对端系统的负 载信息， 使得可以进行不同无线接入技术系统间的负载均衡， 能够保证系统 的通信质量。
图 3为本发明实施例三提供的一种负载信息的获取方法的流程示意图， 如 图 3所示， 本实施例适用于从 UTRAN向 GERAN进行 PS域切换的场景， 本 实施例的负载信息的获取方法可以包括以下步骤：
步骤 301、 源小区所属的源 RNC向 SGSN发送要求重定位消息， 上述 要求重定位消息中携带有第一透传容器信元， 上述第一透传容器信元中携带 有源小区的负载信息信元；
步骤 302、 SGSN接收到上述要求重定位消息， 向目标小区所属的目标 BSS发送第一 PS域切换请求 ( PS-HANDOVER-REQUEST )消息， 上述第 一 PS域切换请求消息中携带有上述第一透传容器信元；
步骤 303、 目标 BSS接收到上述第一 PS域切换请求消息， 向 SGSN返 回 PS域切换请求应答（ PS-HANDOVER-REQUEST-ACKNOWLEDGE )消 息， 上述 PS域切换请求应答消息中携带有第二透传容器信元， 上述第二透 传容器信元中携带有目标小区的负载信息信元；
步骤 304、 SGSN接收到上述 PS域切换请求应答消息， 向源 RNC返回 第二重定位命令消息， 上述第二重定位命令消息中携带有上述第二透传容器 信元。
本实施例中的第一透传容器信元可以为系统间信息的透传容器 ( Inter-System Information Transparent Container )信元, 还可以为源到目 标的透传容器（ Source BSS To Target BSS Transparent Container )信元； 类似地， 第二透传容器信元可以为系统间信息的透传容器 （Inter-System Information Transparent Container )信元， 还可以为目标到源的透传容器 ( Target BSS To Source BSS Transparent Container )信元。
本实施例通过第一透传容器信元中所携带的源小区的负载信息信元和第 二透传容器信元中所携带的目标小区的负载信息信元， 进行不同无线接入技 术系统间的负载信息的交互， 实现了当进行 UTRAN到 GERAN的无线接入 技术系统间 PS域切换时， UTRAN与 GERAN能够获取到对端系统的负载信 息， 使得可以进行不同无线接入技术系统间的负载均衡， 能够保证系统的通 信质量。
图 4为本发明实施例四提供的一种负载信息的获取方法的流程示意图， 如 图 4所示， 本实施例适用于从 E-UTRAN向 UTRAN进行 PS域切换的场景， 本实施例的负载信息的获取方法可以包括以下步骤：
步骤 401、源小区所属的源 eNB向 SGSN发送要求切换消息，上述要求 切换（HANDOVER REQUIRE )消息中携带有第一透传容器信元， 上述第一 透传容器信元中携带有源小区的负载信息信元；
步骤 402、 SGSN接收到上述要求切换消息，向目标小区所属的目标 RNC 发送第一重定位请求（RELOCATION REQUEST )消息， 上述第一重定位请 求消息中携带有上述第一透传容器信元；
步骤 403、 目标 RNC接收到上述第一重定位请求消息， 向 SGSN返回 重定位请求应答（ RELOCATION REQUEST ACKNOWLEDGE )消息， 上述 重定位请求应答消息中携带有第二透传容器信元， 上述第二透传容器信元中 携带有目标小区的负载信息信元；
步骤 404、 SGSN接收到上述重定位请求应答消息， 向源 eNB返回第一 切换命令（ HANDOVER COMMAND ) 消息， 上述第一切换命令消息中携带 有上述第二透传容器信元。
本实施例中的第一透传容器信元可以为系统间信息的透传容器 ( Inter-System Information Transparent Container )信元, 还可以为源到目 标的透传容器（ Source RNC To Target RNC Transparent Container )信元； 类似地， 第二透传容器信元可以为系统间信息的透传容器 （Inter-System Information Transparent Container )信元， 还可以为目标到源的透传容器 ( Target RNC To Source RNC Transparent Container )信元。
本实施例通过第一透传容器信元中所携带的源小区的负载信息信元和第 二透传容器信元中所携带的目标小区的负载信息信元， 进行不同无线接入技 术系统间的负载信息的交互， 实现了当进行 E-UTRAN到 UTRAN的无线接 入技术系统间 PS域切换时， E-UTRAN与 UTRAN能够获取到对端系统的负 载信息， 使得可以进行不同无线接入技术系统间的负载均衡， 能够保证系统 的通信质量。
图 5为本发明实施例五提供的一种负载信息的获取方法的流程示意图， 如 图 5所示， 本实施例适用于从 GERAN向 UTRAN进行 PS域切换的场景， 本 实施例的负载信息的获取方法可以包括以下步骤：
步骤 501、 源小区所属的源 BSS向 SGSN发送 PS域要求切换消息， 上述 PS域要求切换（PS-HANDOVER-REQUIRE ) 消息中携带有第一透传 容器信元， 上述第一透传容器信元中携带有源小区的负载信息信元；
步骤 502、 SGSN接收到上述 PS域要求切换消息， 向目标小区所属的 目标 RNC发送第二重定位请求消息，上述第二重定位请求消息中携带有上述 第一透传容器信元；
步骤 503、 目标 RNC接收到上述第二重定位请求消息， 向 SGSN返回 重定位请求应答消息 ,上述重定位请求应答消息中携带有第二透传容器信元， 上述第二透传容器信元中携带有目标小区的负载信息信元；
步骤 504、 SGSN接收到上述重定位请求应答消息， 向源 BSS返回第一 PS域要求切换应答（ PS-HANDOVER-REQUIRE-ACK )消息， 上述第一 PS 域要求切换应答消息中携带有上述第二透传容器信元。
本实施例中的第一透传容器信元可以为系统间信息的透传容器
( Inter-System Information Transparent Container )信元, 还可以为源到目 标的透传容器（ Source RNC To Target RNC Transparent Container )信元； 类似地， 第二透传容器信元可以为系统间信息的透传容器 （Inter-System Information Transparent Container )信元， 还可以为目标到源的透传容器 ( Target RNC To Source RNC Transparent Container )信元。
本实施例通过第一透传容器信元中所携带的源小区的负载信息信元和第 二透传容器信元中所携带的目标小区的负载信息信元， 进行不同无线接入技 术系统间的负载信息的交互， 实现了当进行 GERAN到 UTRAN的无线接入 技术系统间 PS域切换时， GERAN与 UTRAN能够获取到对端系统的负载信 息， 使得可以进行不同无线接入技术系统间的负载均衡， 能够保证系统的通 信质量。
图 6为本发明实施例六提供的一种负载信息的获取方法的流程示意图， 如 图 6所示， 本实施例适用于从 GERAN向 E-UTRAN进行 PS域切换的场景， 本实施例的负载信息的获取方法可以包括以下步骤：
步骤 601、 源小区所属的源 BSS向 SGSN发送 PS域要求切换消息， 上 述 PS域要求切换消息中携带有第一透传容器信元， 上述第一透传容器信元 中携带有源小区的负载信息信元；
步骤 602、 SGSN接收到上述 PS域要求切换消息， 向目标小区所属的 目标 eNB发送第二切换请求消息，上述第二切换请求消息中携带有上述第一 透传容器信元；
步骤 603、 目标 eNB接收到上述第二切换请求消息，向 SGSN返回切换 请求应答消息， 上述切换请求应答消息中携带有第二透传容器信元， 上述第 二透传容器信元中携带有目标小区的负载信息信元；
步骤 604、 SGSN接收到上述切换请求应答消息， 向源 BSS返回第二
PS域要求切换应答消息，上述第二 PS域要求切换应答消息中携带有上述第 二透传容器信元。
本实施例中的第一透传容器信元可以为系统间信息的透传容器
( Inter-System Information Transparent Container )信元, 还可以为源到目 标的透传容器 ( Source eNB To Target eNB Transparent Container )信元； 类似地， 第二透传容器信元可以为系统间信息的透传容器 （Inter-System Information Transparent Container )信元， 还可以为目标到源的透传容器 ( Target eNB To Source eNB Transparent Container )信元。
本实施例通过第一透传容器信元中所携带的源小区的负载信息信元和第 二透传容器信元中所携带的目标小区的负载信息信元， 进行不同无线接入技 术系统间的负载信息的交互， 实现了当进行 GERAN到 E-UTRAN的无线接 入技术系统间 PS域切换时， GERAN与 E-UTRAN能够获取到对端系统的负 载信息， 使得可以进行不同无线接入技术系统间的负载均衡， 能够保证系统 的通信质量。
图 7为本发明实施例七提供的一种负载信息的获取方法的流程示意图， 如 图 7所示， 本实施例适用于从 E-UTRAN向 GERAN进行 PS域切换的场景， 本实施例的负载信息的获取方法可以包括以下步骤：
步骤 701、源小区所属的源 eNB向 SGSN发送要求切换消息，上述要求 切换消息中携带有第一透传容器信元， 上述第一透传容器信元中携带有源小 区的负载信息信元；
步骤 702、SGSN接收到上述要求切换消息，向目标小区所属的目标 BSS 发送第二 PS域切换请求消息，上述第二 PS域切换请求消息中携带有上述第 一透传容器信元；
步骤 703、 目标 BSS接收到上述第二 PS域切换请求消息， 向 SGSN返 回 PS域切换请求应答消息，上述 PS域切换请求应答消息中携带有第二透传 容器信元， 上述第二透传容器信元中携带有目标小区的负载信息信元；
步骤 704、 SGSN接收到上述 PS域切换请求应答消息， 向源 eNB返回 第二切换命令消息，上述第二切换命令消息中携带有上述第二透传容器信元。
本实施例中的第一透传容器信元可以为系统间信息的透传容器
( Inter-System Information Transparent Container )信元, 还可以为源到目 标的透传容器（ Source BSS To Target BSS Transparent Container )信元； 类似地， 第二透传容器信元可以为系统间信息的透传容器 （Inter-System Information Transparent Container )信元， 还可以为目标到源的透传容器 ( Target BSS To Source BSS Transparent Container )信元。
本实施例通过第一透传容器信元中所携带的源小区的负载信息信元和第 二透传容器信元中所携带的目标小区的负载信息信元， 进行不同无线接入技 术系统间的负载信息的交互， 实现了当进行 E-UTRAN到 GERAN的无线接 入技术系统间 PS域切换时， E-UTRAN与 GERAN能够获取到对端系统的负 载信息， 使得可以进行不同无线接入技术系统间的负载均衡， 能够保证系统 的通信质量。
需要说明的是：上述本发明实施例二~本发明实施例七均是切换成功的场 景， 本领域技术人员应该能够 [艮容易想到， 本发明实施例还可以进一步为切 换失败的场景， 即第二透传容器信元的传递则通过表示失败的响应消息来承 载， 此处不再赘述。
上述本发明实施例一~本发明实施例七所提供的负载信息的获取方法中 需要源接入控制设备发起切换的相关流程之后， 才能在源接入控制设备与目 标接入控制设备之间进行负载信息的交互， 此时源接入控制设备所获取的目 标小区的负载信息不能避免本次切换由于目标接入控制设备的负载过重而导 致的切换失败， 而只能作为下一次成功切换的保证， 进行不同无线接入技术 系统间的负载均衡， 能够保证系统的通信质量。
图 8为本发明实施例八提供的另一种负载信息的获取方法的流程示意图， 如图 8所示， 本实施例的负载信息的获取方法可以包括以下步骤：
步骤 801、 进行不同无线接入技术系统间切换之前， 源无线接入技术系 统中源小区所属的源接入控制设备通过核心网向目标无线接入技术系统中目 标小区所属的目标接入控制设备发送基于 RIM机制的负载信息请求消息； 步骤 802、 源接入控制设备接收目标接入控制设备根据上述基于 RIM机 制的负载信息请求消息通过核心网所返回的基于 RIM机制的负载信息响应消 息， 上述基于 RIM机制的负载信息响应消息中携带有上述目标小区的负载信 息。
本实施例中的源无线接入技术系统与目标无线接入技术系统可以为 GERAN、 UTRAN、 E-UTRAN中的任意两个系统，他们对应的接入控制设备 分另' J为 BSS、 RNC和 eNB。
本实施例中， 源接入控制设备可以通过事件触发或周期性向目标接入控 制设备发送基于 RIM机制的负载信息请求消息， 例如： 当源小区的负载大于 60%时， 源小区则向所属的源接入控制设备上报预设事件， 以触发源接入控 制设备通过核心网向目标接入控制设备发送基于 RIM机制的负载信息请求消 息； 源接入控制设备每隔预设时间段之后被触发通过核心网向目标接入控制 设备发送基于 RIM机制的负载信息请求消息。
本实施例中，源接入控制设备与目标接入控制设备可以通过基于 RIM机 制的负载信息请求消息与基于 RIM机制的负载信息响应消息进行交互， 实现 了进行不同无线接入技术系统间切换之前， 源无线接入技术系统能够获取到 目标无线接入技术系统的负载信息， 使得可以进行不同无线接入技术系统间 的负载均衡， 能够保证系统的通信质量。
需要说明的是： 本实施例所提供的负载信息的获取方法中的目标小区的 个数可以为一个， 还可以为多个。 具体地， 可以通过在所发送的基于 RIM机 制的负载信息请求消息中携带上所请求的一个目标小区的小区标识或多个目 标小区的小区标识列表来指示。 对于多个目标小区的情况， 核心网接收到携 带有多个目标小区的小区标识列表的基于 RIM 机制的负载信息请求消息之 后， 根据上述小区标识列表中的目标小区标识分别找到相应的目标小区所述 的目标接入控制设备， 每个目标接入控制设备分别通过核心网向源小区所属 的源接入控制设备返回携带有各自目标小区的负载信息的基于 RIM机制的负 载信息响应消息。 上述的源接入控制设备与多个目标接入控制设备通过基于 RIM 机制的负载信息请求消息与基于 RIM 机制的负载信息响应消息进行交 互， 实现了进行不同无线接入技术系统间切换之前， 源无线接入技术系统能 够获取到多个目标无线接入技术系统的负载信息， 得可以根据多个小区的负 载信息进一步更加有效地选择目标小区以进行不同无线接入技术系统间的负 载均衡， 能够进一步保证系统的通信质量。
由于源接入控制设备与目标接入控制设备之间没有接口， 因此， 本实施 例可以通过核心网的 SGSN ( PS 域）或移动交换中心 （Mobile Switching Center, 简称 MSC ) ( CS域）对上述负载信息请求消息与负载信息响应消息 进行透传。
在进行上述任意两个无线接入技术系统之间的无线接入技术系统间 PS 域切换之前， 每个无线接入技术系统与核心网进行交互的 Rl M机制的相关消 息均不同， 具体流程可以通过下述六个本发明实施例详细进行说明。
图 9为本发明实施例九提供的另一种负载信息的获取方法的流程示意图， 如图 9所示， 本实施例适用于从 UTRAN向 E-UTRAN进行切换的场景， 本实 施例的负载信息的获取方法可以包括以下步骤：
步骤 901、源小区所属的源 RNC向 SGSN或 MSC发送第一直接信息传 输（DIRECT INFORMATION TRANSFER )消息， 上述第一直接信息传输消 息中携带有第一系统间信息传输类型信元， 上述第一系统间信息传输类型信 元中携带有第一 RIM传输（ RIM Transfer )信元， 上述第一 RIM传输信元中 携带有源小区的负载信息信元；
步骤 902、 SGSN或 MSC接收到上述第一直接信息传输消息， 向目标 小区所属的目标 eNB 发送第一 MME 直接信息传输 （ MME DIRECT INFORMATION TRANSFER )消息， 上述第一 MME直接信息传输消息中携 带有上述第一系统间信息传输类型信元；
步骤 903、目标 eNB接收到上述第一 MME直接信息传输消息，向 SGSN 或 MSC 返回 eNB 直接信息传输 （ eNB DIRECT INFORMATION TRANSFER ) 消息， 上述 eNB直接信息传输消息中携带有第二系统间信息 传输类型信元， 上述第二系统间信息传输类型信元中携带有第二 RIM传输信 元， 上述第二 RIM传输信元中携带有目标小区的负载信息信元；
步骤 904、 SGSN或 MSC接收到上述 eNB直接信息传输消息， 向源 RNC返回第二直接信息传输消息，上述第二直接信息传输消息中携带有上述 第二系统间信息传输类型信元。
本实施例通过第一 RIM 传输信元中所携带的源小区的负载信息信元和 第二 RIM传输信元中所携带的目标小区的负载信息信元， 进行不同无线接入 技术系统间的负载信息的交互， 实现了当进行 UTRAN到 E-UTRAN的无线 接入技术系统切换之前， UTRAN与 E-UTRAN能够获取到对端系统的负载信 息， 使得可以进行不同无线接入技术系统间的负载均衡， 能够保证系统的通 信质量。
图 10为本发明实施例十提供的另一种负载信息的获取方法的流程示意图， 如图 10所示， 本实施例适用于从 UTRAN向 GERAN进行切换的场景， 本实 施例的负载信息的获取方法可以包括以下步骤：
步骤 1001、 源小区所属的源 RNC向 SGSN或 MSC发送第一直接信息 传输消息， 上述第一直接信息传输消息中携带有第一系统间信息传输类型信 元， 上述第一系统间信息传输类型信元中携带有第一 RIM传输信元， 上述第 一 RIM传输信元中携带有源小区的负载信息信元；
步骤 1002、 SGSN或 MSC接收到上述第一直接信息传输消息， 向目标 小区所属的目标 BSS 发送第一 RIM 协议数据单元传输请求相关 ( RIM-PDU-TRANSFER.req ) 消息， 上述第一 RIM协议数据单元传输请求 相关消息中携带有第一 RIM容器信元（ RIM Container ), 上述第一 RIM容器 信元中携带有源小区的负载信息信元；
步骤 1003、 目标 BSS接收到上述第一 RIM协议数据单元传输请求相关 消息， 向 SGSN 或 MSC 返回第一 RIM 协议数据单元传输指示相关 ( RIM-PDU-TRANSFER.ind ) 消息， 上述第一 RIM协议数据单元传输指示 相关消息中携带有第二 RIM容器信元，上述第二 RIM容器信元中携带有目标 小区的负载信息信元；
步骤 1004、 SGSN或 MSC接收到上述第一 RIM协议数据单元传输指 示相关消息， 向源 RNC返回第三直接信息传输消息，上述第三直接信息传输 消息中携带有第三系统间信息传输类型信元， 上述第三系统间信息传输类型 信元中携带有第三 RIM传输信元，上述第三 RIM传输信元中携带有目标小区 的负载信息信元。
本实施例中的第一 RIM协议数据单元传输请求相关消息可以包括 RAN 信息请求协议数据单元（ RAN-INFORMATION-REQUEST PDU ) 消息等； 第一 RIM协议数据单元传输指示相关消息可以包括 RAN信息协议数据单元 ( RAN-INFORMATION PDU ) 消息等。
本实施例通过第一 RIM传输信元、 第一 RIM容器信元中所携带的源小 区的负载信息信元和第二 RIM容器信元、第三 RIM传输信元中所携带的目标 小区的负载信息信元， 进行不同无线接入技术系统间的负载信息的交互， 实 现了当进行 UTRAN到 GERAN的无线接入技术系统切换之前， UTRAN与 GERAN 能够获取到对端系统的负载信息， 使得可以进行不同无线接入技术 系统间的负载均衡， 能够保证系统的通信质量。
图 11 为本发明实施例十一提供的另一种负载信息的获取方法的流程示意 图， 如图 11所示， 本实施例适用于从 E-UTRAN向 UTRAN进行切换的场景， 本实施例的负载信息的获取方法可以包括以下步骤：
步骤 1101、 源小区所属的源 eNB向 SGSN或 MSC发送 eNB直接信息 传输消息，上述 eNB直接信息传输消息中携带有第二系统间信息传输类型信 元， 上述第二系统间信息传输类型信元中携带有第二 RIM传输信元， 上述第 二 RIM传输信元中携带有源小区的负载信息信元；
步骤 1102、 SGSN或 MSC接收到上述 eNB直接信息传输消息， 向目标 小区所属的目标 RNC发送第二直接信息传输消息，上述第二直接信息传输消 息中携带有上述第二系统间信息传输类型信元；
步骤 1103、 目标 RNC接收到上述第二直接信息传输消息， 向 SGSN或 MSC返回第一直接信息传输消息，上述第一直接信息传输消息中携带有第一 系统间信息传输类型信元， 上述第一系统间信息传输类型信元中携带有第一 RIM传输信元， 上述第一 RIM传输信元中携带有目标小区的负载信息信元； 步骤 1104、 SGSN或 MSC接收到上述第一直接信息传输消息，向源 eNB 返回第一 MME直接信息传输消息，上述第一 MME直接信息传输消息中携带 有上述第一系统间信息传输类型信元。
本实施例通过第二 RIM 传输信元中所携带的源小区的负载信息信元和 第一 RIM传输信元中所携带的目标小区的负载信息信元， 进行不同无线接入 技术系统间的负载信息的交互， 实现了当进行 E-UTRAN到 UTRAN的无线 接入技术系统切换之前， E-UTRAN与 UTRAN能够获取到对端系统的负载信 息， 使得可以进行不同无线接入技术系统间的负载均衡， 能够保证系统的通 信质量。
图 12为本发明实施例十二提供的另一种负载信息的获取方法的流程示意 图， 如图 12所示， 本实施例适用于从 GERAN向 UTRAN进行切换的场景， 本实施例的负载信息的获取方法可以包括以下步骤：
步骤 1201、 源小区所属的源 BSS向 SGSN或 MSC发送第二 RIM协议 数据单元传输请求相关消息， 上述第二 RIM协议数据单元传输请求相关消息 中携带有第三 RIM容器信元，上述第三 RIM容器信元中携带有源小区的负载 信息信元；
步骤 1202、 SGSN或 MSC接收到上述第二 RIM协议数据单元传输请求 相关消息， 向目标小区所属的目标 RNC发送第三直接信息传输消息，上述第 三直接信息传输消息中携带有第三系统间信息传输类型信元， 上述第三系统 间信息传输类型信元中携带有第三 RIM传输信元，上述第三 RIM传输信元中 携带有源小区的负载信息信元；
步骤 1203、 目标 RNC接收到上述第三直接信息传输消息， 向 SGSN或
MSC返回第一直接信息传输消息，上述第一直接信息传输消息中携带有第一 系统间信息传输类型信元， 上述第一系统间信息传输类型信元中携带有第一 RIM传输信元， 上述第一 RIM传输信元中携带有目标小区的负载信息信元； 步骤 1204、SGSN或 MSC接收到上述第一直接信息传输消息，向源 BSS 返回第二 RIM协议数据单元传输指示相关消息，上述第二 RIM协议数据单元 传输指示相关消息中携带有第四 RIM容器信元，上述第四 RIM容器信元中携 带有目标小区的负载信息信元。
本实施例中的第二 RIM协议数据单元传输请求相关消息可以包括 RAN 信息请求协议数据单元（ RAN-INFORMATION-REQUEST PDU ) 消息等； 第二 RIM协议数据单元传输指示相关消息可以包括 RAN信息协议数据单元 ( RAN-INFORMATION PDU ) 消息等。
本实施例通过第三 RIM容器信元、 第三 RIM传输信元中所携带的源小 区的负载信息信元和第一 RIM传输信元、第四 RIM容器信元中所携带的目标 小区的负载信息信元， 进行不同无线接入技术系统间的负载信息的交互， 实 现了当进行 GERAN到 UTRAN的无线接入技术系统切换之前， GERAN与 UTRAN能够获取到对端系统的负载信息，使得可以进行不同无线接入技术系 统间的负载均衡， 能够保证系统的通信质量。
图 13为本发明实施例十三提供的另一种负载信息的获取方法的流程示意 图，如图 13所示，本实施例适用于从 GERAN向 E-UTRAN进行切换的场景， 本实施例的负载信息的获取方法可以包括以下步骤：
步骤 1301、 源小区所属的源 BSS向 SGSN或 MSC发送第二 RIM协议 数据单元传输请求相关消息， 上述第二 RIM协议数据单元传输请求相关消息 中携带有第三 RIM容器信元，上述第三 RIM容器信元中携带有上述源小区的 负载信息信元； 步骤 1302、 SGSN或 MSC接收到上述第二 RIM协议数据单元传输请求 相关消息， 向目标小区所属的目标 eNB发送第二 MME直接信息传输消息， 上述第二 MME直接信息传输消息中携带有第三系统间信息传输类型信元， 上述第三系统间信息传输类型信元中携带有第三 RIM 传输信元， 上述第三 RIM传输信元中携带有源小区的负载信息信元；
步骤 1303、目标 eNB接收到上述第二 MME直接信息传输消息，向 SGSN 或 MSC返回 eNB直接信息传输消息，上述 eNB直接信息传输消息中携带有 第二系统间信息传输类型信元，上述第二系统间信息传输类型信元中携带有第 二 RIM传输信元，上述第二 RIM传输信元中携带有目标小区的负载信息信元； 步骤 1304、 SGSN或 MSC接收到上述 eNB直接信息传输消息， 向源
BSS返回第三 RIM协议数据单元传输指示相关消息， 上述第三 RIM协议数 据单元传输指示相关消息中携带有第五 RIM容器信元，上述第五 RIM容器信 元中携带有目标小区的负载信息信元。
本实施例中的第二 RIM协议数据单元传输请求相关消息可以包括 RAN 信息请求协议数据单元（ RAN-INFORMATION-REQUEST PDU ) 消息等； 第三 RIM协议数据单元传输指示相关消息可以包括 RAN信息协议数据单元 ( RAN-INFORMATION PDU ) 消息等。
本实施例通过第三 RIM容器信元、 第三 RIM传输信元中所携带的源小 区的负载信息信元和第二 RIM传输信元、第五 RIM容器信元中所携带的目标 小区的负载信息信元， 进行不同无线接入技术系统间的负载信息的交互， 实 现了当进行 GERAN到 E-UTRAN 的无线接入技术系统切换之前， GERAN 与 E-UTRAN能够获取到对端系统的负载信息， 使得可以进行不同无线接入 技术系统间的负载均衡， 能够保证系统的通信质量。
图 14为本发明实施例十四提供的另一种负载信息的获取方法的流程示意 图，如图 14所示，本实施例适用于从 E-UTRAN向 GERAN进行切换的场景， 本实施例的负载信息的获取方法可以包括以下步骤：
步骤 1401、 源小区所属的源 eNB向 SGSN或 MSC发送 eNB直接信息 传输消息，上述 eNB直接信息传输消息中携带有第二系统间信息传输类型信 元， 上述第二系统间信息传输类型信元中携带有第二 RIM传输信元， 上述第 二 RIM传输信元中携带有源小区的负载信息信元；
步骤 1402、 SGSN或 MSC接收到上述 eNB直接信息传输消息， 向目 标小区所属的目标 BSS发送第三 RIM协议数据单元传输请求相关消息， 上 述第三 RIM协议数据单元传输请求相关消息中携带有第六 RIM容器信元，上 述第六 RIM容器信元中携带有源小区的负载信息信元；
步骤 1403、 目标 BSS接收到上述第三 RIM协议数据单元传输请求相关 消息， 向 SGSN或 MSC返回第一 RIM协议数据单元传输指示相关消息， 上 述第一 RIM协议数据单元传输指示相关消息中携带有第二 RIM容器信元，上 述第二 RIM容器信元中携带有目标小区的负载信息信元；
步骤 1404、 SGSN或 MSC接收到上述第一 RIM协议数据单元传输指示 相关消息， 向源 eNB返回第二 MME直接信息传输消息， 上述第二 MME直 接信息传输消息中携带有第三系统间信息传输类型信元， 上述第三系统间信 息传输类型信元中携带有第三 RIM传输信元，上述第三 RIM传输信元中携带 有目标小区的负载信息信元。
本实施例中的第三 RIM协议数据单元传输请求相关消息可以包括 RAN 信息请求协议数据单元（ RAN-INFORMATION-REQUEST PDU ) 消息等； 第一 RIM协议数据单元传输指示相关消息可以包括 RAN信息协议数据单元 ( RAN-INFORMATION PDU ) 消息等。
本实施例通过第二 RIM传输信元、 第六 RIM容器信元中所携带的源小 区的负载信息信元和第二 RIM容器信元、第三 RIM传输信元中所携带的目标 小区的负载信息信元， 进行不同无线接入技术系统间的负载信息的交互， 实 现了当进行 E-UTRAN到 GERAN的无线接入技术系统切换之前， E-UTRAN 与 GERAN能够获取到对端系统的负载信息， 使得可以进行不同无线接入技 术系统间的负载均衡， 能够保证系统的通信质量。
上述本发明实施例八~本发明实施例十四所提供的负载信息的获取方法 是在源接入控制设备发起切换的相关流程之前， 就能在源接入控制设备与目 标接入控制设备之间进行负载信息的获取， 此时源接入控制设备所获取的目 标小区的负载信息能够作为本次成功切换的保证， 能够有效避免本次切换由 于目标接入控制设备的负载过重而导致的切换失败， 使得可以进行不同无线 接入技术系统间的负载均衡， 能够保证系统的通信质量。
需要说明的是： 对于前述的各方法实施例， 为了简单描述， 故将其都表 述为一系列的动作组合， 但是本领域技术人员应该知悉， 本发明并不受所描 述的动作顺序的限制， 因为依据本发明， 某些步骤可以釆用其他顺序或者同 时进行。 其次， 本领域技术人员也应该知悉， 说明书中所描述的实施例均属 于优选实施例， 所涉及的动作和模块并不一定是本发明所必须的。
在上述实施例中， 对各个实施例的描述都各有侧重， 某个实施例中没有 详述的部分， 可以参见其他实施例的相关描述。
图 15为本发明实施例十五提供的一种接入控制设备的结构示意图， 如图 15所示， 本实施例的接入控制设备可以包括第一发送模块 151和第一接收模 块 152。 其中， 第一发送模块 151 当进行不同无线接入技术系统间 PS域切 换时， 通过核心网向目标小区所属的目标接入控制设备发送无线接入技术系 统间切换请求消息， 第一接收模块 152接收上述目标接入控制设备根据上述 无线接入技术系统间切换请求消息通过核心网所返回的无线接入技术系统间 切换响应消息， 上述无线接入技术系统间切换响应消息中携带有上述目标小 区的负载信息。
上述本发明实施例一中源接入控制设备、 本发明实施例二中源 RNC、 本 发明实施例三中源 RNC、 本发明实施例四中源 eNB、 本发明实施例五中源 BSS、 本发明实施例六中源 BSS和本发明实施例七中源 eNB的功能均可以 由本实施例提供的接入控制设备实现；
图 16为本发明实施例十六提供的另一种接入控制设备的结构示意图， 如 图 16所示，本实施例的接入控制设备可以包括第二接收模块 161和第二发送 模块 162。 其中， 第二接收模块 161接收源小区所属的源接入控制设备通过 核心网发送的无线接入技术系统间切换请求消息， 第二发送模块 162通过核 心网向上述源接入控制设备返回无线接入技术系统间切换响应消息， 上述无 线接入技术系统间切换响应消息中携带有上述接入控制设备下目标小区的负 载信息。
上述本发明实施例一中目标接入控制设备、本发明实施例二中目标 eNB、 本发明实施例三中目标 BSS、本发明实施例四中目标 RNC、本发明实施例五 中目标 RNC、 本发明实施例六中目标 eNB和本发明实施例七中目标 BSS的 功能均可以由本实施例提供的接入控制设备实现。
图 17为本发明实施例十七提供的再一种接入控制设备的结构示意图， 如 图 17所示，本实施例的接入控制设备可以包括第三发送模块 171和第三接收 模块 172。 其中， 第三发送模块 171进行不同无线接入技术系统间切换之前， 通过核心网向目标小区所属的目标接入控制设备发送基于 RIM机制的负载信 息请求消息， 第三接收模块 172接收上述目标接入控制设备根据上述基于 RIM机制的负载信息请求消息通过核心网所返回的基于 RIM机制的负载信息 响应消息， 上述基于 RIM机制的负载信息响应消息中携带有上述目标小区的 负载信息。
上述本发明实施例八中源接入控制设备、 本发明实施例九中源 RNC、 本 发明实施例十中源 RNC、本发明实施例十一中源 eNB、本发明实施例十二中 源 BSS、 本发明实施例十三中源 BSS和本发明实施例十四中源 eNB的功能 均可以由本实施例提供的接入控制设备实现。
图 18为本发明实施例十八提供的又一种接入控制设备的结构示意图， 如 图 18所示，本实施例的接入控制设备可以包括第四接收模块 181和第四发送 模块 182。 其中， 第四接收模块 181接收源小区所属的源接入控制设备通过 核心网发送的基于 RIM机制的负载信息请求消息，第四发送模块 182通过核 心网向上述源接入控制设备返回基于 RIM机制的负载信息响应消息， 上述基 于 RIM机制的负载信息响应消息中携带有上述接入控制设备下目标小区的负 载信息。
上述本发明实施例八中目标接入控制设备、本发明实施例九中目标 eNB、 本发明实施例十中目标 BSS、本发明实施例十一中目标 RNC、本发明实施例 十二中目标 RNC、 本发明实施例十三中目标 eNB和本发明实施例十四中目 标 BSS的功能均可以由本实施例提供的接入控制设备实现。
图 19 为本发明实施例十九提供的一种负载信息的获取系统的结构示意 图，如图 19所示，本实施例的负载信息的获取系统可以包括源无线接入技术 系统中源小区所属的第一源接入控制设备 10 和目标无线接入技术系统中目 标小区所属的第一目标接入控制设备 20。 其中， 第一源接入控制设备 10用于当进行不同无线接入技术系统间 PS域切换 时，通过核心网向目标小区所属的第一目标接入控制设备 20发送无线接入技 术系统间切换请求消息，以及接收第一目标接入控制设备 20通过核心网所返 回的无线接入技术系统间切换响应消息， 上述无线接入技术系统间切换响应 消息中携带有上述目标小区的负载信息；
第一目标接入控制设备 20 用于接收源小区所属的第一源接入控制设备 10通过核心网发送的无线接入技术系统间切换请求消息， 以及通过核心网向 第一源接入控制设备 10返回上述无线接入技术系统间切换响应消息。
上述本发明实施例一中源接入控制设备、 本发明实施例二中源 RNC、 本 发明实施例三中源 RNC、 本发明实施例四中源 eNB、 本发明实施例五中源 BSS、 本发明实施例六中源 BSS和本发明实施例七中源 eNB的功能均可以 由本实施例提供的负载信息的获取系统中的第一源接入控制设备 10实现；上 述本发明实施例一中目标接入控制设备、 本发明实施例二中目标 eNB、 本发 明实施例三中目标 BSS、本发明实施例四中目标 RNC、本发明实施例五中目 标 RNC、 本发明实施例六中目标 eNB和本发明实施例七中目标 BSS的功能 均可以由本实施例提供的负载信息的获取系统中的第一目标接入控制设备 20实现。
本实施例中， 源接入控制设备与目标接入控制设备可以通过无线接入技 术系统间切换的相关消息进行交互， 实现了当进行不同无线接入技术系统间 PS域切换时，源无线接入技术系统能够获取到目标无线接入技术系统的负载 信息， 使得可以进行不同无线接入技术系统间的负载均衡， 能够保证系统的 通信质量。
图 20 为本发明实施例二十提供的另一种负载信息的获取系统的结构示 意图，如图 20所示，本实施例的负载信息的获取系统可以包括源无线接入技 术系统中源小区所属的第二源接入控制设备 30 和目标无线接入技术系统中 目标小区所属的第二目标接入控制设备 40。 其中，
第二源接入控制设备 30用于进行不同无线接入技术系统间切换之前，通 过核心网向目标小区所属的第二目标接入控制设备 40发送基于 RIM机制的 负载信息请求消息，以及接收第二目标接入控制设备 40通过核心网所返回的 基于 RIM机制的负载信息响应消息，上述基于 RIM机制的负载信息响应消息 中携带有上述目标小区的负载信息；
第二目标接入控制设备 40接收源小区所属的源接入控制设备通过核心 网发送的基于 RIM机制的负载信息请求消息， 以及通过核心网向第二源接入 控制设备 30返回上述基于 RIM机制的负载信息响应消息。
上述本发明实施例八中源接入控制设备、 本发明实施例九中源 RNC、 本 发明实施例十中源 RNC、本发明实施例十一中源 eNB、本发明实施例十二中 源 BSS、 本发明实施例十三中源 BSS和本发明实施例十四中源 eNB的功能 均可以由本实施例提供的负载信息的获取系统中的第二源接入控制设备 30 实现； 上述本发明实施例八中目标接入控制设备、 本发明实施例九中目标 eNB、 本发明实施例十中目标 BSS、 本发明实施例十一中目标 RNC、 本发明 实施例十二中目标 RNC、 本发明实施例十三中目标 eNB和本发明实施例十 四中目标 BSS 的功能均可以由本实施例提供的负载信息的获取系统中的第 二目标接入控制设备 40实现。
本实施例中，源接入控制设备与目标接入控制设备可以通过基于 RIM机 制的负载信息请求消息与基于 RIM机制的负载信息响应消息进行交互， 实现 了进行不同无线接入技术系统间切换之前， 源无线接入技术系统能够获取到 目标无线接入技术系统的负载信息， 使得可以进行不同无线接入技术系统间 的负载均衡， 能够保证系统的通信质量。
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一计算机可读 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
1、 一种负载信息的获取方法， 其特征在于， 包括：
当进行不同无线接入技术系统间 PS域切换时， 源小区所属的源接入控 制设备通过核心网向目标小区所属的目标接入控制设备发送无线接入技术系 统间切换请求消息；
所述源接入控制设备接收所述目标接入控制设备根据所述无线接入技术 系统间切换请求消息通过核心网所返回的无线接入技术系统间切换响应消息， 所述无线接入技术系统间切换响应消息中携带有所述目标小区的负载信息。
2、 根据权利要求 1所述的方法， 其特征在于， 所述无线接入技术系统间 切换请求消息中携带有所述源小区的负载信息。
3、 根据权利要求 2所述的方法， 其特征在于， 所述源小区的负载信息承 载在第一透传容器信元中； 所述目标小区的负载信息承载在第二透传容器信 元中。
4、 根据权利要求 3所述的方法， 其特征在于， 所述第一透传容器信元包 括系统间信息的透传容器信元和 /或源到目标的透传容器信元； 所述第二透传 容器信元包括系统间信息的透传容器信元和 /或目标到源的透传容器信元。
5、 根据权利要求 1~4 中任一权利要求所述的方法， 其特征在于， 所述 不同无线接入技术系统间 PS域切换包括 UTRAN向 E-UTRAN的 PS域切换、 UTRAN向 GERAN的 PS域切换、 E-UTRAN向 UTRAN的 PS域切换、 GERAN向 UTRAN的 PS域切换、 GERAN向 E-UTRAN的 PS域切换或 E-UTRAN向 GERAN的 PS域切换。
6、 一种负载信息的获取方法， 其特征在于， 包括：
进行不同无线接入技术系统间切换之前， 源小区所属的源接入控制设备 通过核心网向目标小区所属的目标接入控制设备发送基于 RIM机制的负载信 息请求消息；
所述源接入控制设备接收所述目标接入控制设备根据所述基于 RIM机制 的负载信息请求消息通过核心网所返回的基于 RIM机制的负载信息响应消息， 所述基于 RIM机制的负载信息响应消息中携带有所述目标小区的负载信息。
7、 根据权利要求 6所述的方法， 其特征在于， 所述源小区所属的源接入 控制设备通过核心网向目标小区所属的目标接入控制设备发送基于 RIM机制 的负载信息请求消息包括： 所述源小区所属的源接入控制设备通过事件触发 或周期性通过核心网向目标小区所属的目标接入控制设备发送基于 RIM机制 的负载信息请求消息。
8、 根据权利要求 6所述的方法， 其特征在于， 所述基于 RIM机制的负 载信息请求消息中携带有所述源小区的负载信息。
9、 根据权利要求 8所述的方法， 其特征在于， 所述无线接入技术系统间 切换为 UTRAN向 E-UTRAN的切换，
所述源小区所属的源接入控制设备通过核心网向目标小区所属的目标接 入控制设备发送基于 RIM机制的负载信息请求消息包括：
源小区所属的源 RNC向 SGSN或 MSC发送第一直接信息传输消息， 所述第一直接信息传输消息中携带有第一系统间信息传输类型信元， 所述第 一系统间信息传输类型信元中携带有第一 RIM传输信元，所述第一 RIM传输 信元中携带有所述源小区的负载信息信元， 以供所述 SGSN或 MSC向目标 小区所属的目标 eNB发送第一 MME直接信息传输消息， 所述第一 MME直 接信息传输消息中携带有所述第一系统间信息传输类型信元；
所述源接入控制设备接收所述目标接入控制设备根据所述基于 RIM机制 的负载信息请求消息通过核心网所返回的基于 RIM 机制的负载信息响应消 息， 所述基于 RIM机制的负载信息响应消息中携带有所述目标小区的负载信 息包括：
所述源 RNC接收所述 SGSN或 MSC所返回的第二直接信息传输消息， 所述第二直接信息传输消息为所述 SGSN或 MSC根据所述目标 eNB所返回 的 eNB直接信息传输消息所返回的，所述 eNB直接信息传输消息中携带有第 二系统间信息传输类型信元，所述第二系统间信息传输类型信元中携带有第二 RIM传输信元， 所述第二 RIM传输信元中携带有所述目标小区的负载信息信 元， 所述第二直接信息传输消息中携带有所述第二系统间信息传输类型信元。
10、 根据权利要求 8所述的方法， 其特征在于， 所述无线接入技术系统 间切换为 UTRAN向 GERAN的切换，
所述源小区所属的源接入控制设备通过核心网向目标小区所属的目标接 入控制设备发送基于 RIM机制的负载信息请求消息包括：
源小区所属的源 RNC向 SGSN或 MSC发送第一直接信息传输消息， 所述第一直接信息传输消息中携带有第一系统间信息传输类型信元， 所述第 一系统间信息传输类型信元中携带有第一 RIM传输信元，所述第一 RIM传输 信元中携带有所述源小区的负载信息信元， 以供所述 SGSN或 MSC向目标 小区所属的目标 BSS发送第一 RIM协议数据单元传输请求相关消息， 所述 第一 RIM协议数据单元传输请求相关消息中携带有第一 RIM容器信元，所述 第一 RIM容器信元中携带有所述源小区的负载信息信元；
所述源接入控制设备接收所述目标接入控制设备根据所述基于 RIM机制 的负载信息请求消息通过核心网所返回的基于 RIM 机制的负载信息响应消 息， 所述基于 RIM机制的负载信息响应消息中携带有所述目标小区的负载信 息包括：
所述源 RNC接收所述 SGSN或 MSC所返回的第三直接信息传输消息， 所述第三直接信息传输消息为所述 SGSN或 MSC根据所述目标 eNB所返回 的第一 RIM协议数据单元传输指示相关消息所返回的，所述第一 RIM协议数 据单元传输指示相关消息中携带有第二 RIM容器信元，所述第二 RIM容器信 元中携带有所述目标小区的负载信息信元， 所述第三直接信息传输消息中携 带有第三系统间信息传输类型信元， 所述第三系统间信息传输类型信元中携 带有第三 RIM传输信元，所述第三 RIM传输信元中携带有所述目标小区的负 载信息信元。
11、 根据权利要求 8所述的方法， 其特征在于， 所述无线接入技术系统 间切换为 E-UTRAN向 UTRAN的切换，
所述源小区所属的源接入控制设备通过核心网向目标小区所属的目标接 入控制设备发送基于 RIM机制的负载信息请求消息包括：
源小区所属的源 eNB向 SGSN或 MSC发送 eNB直接信息传输消息， 所述 eNB直接信息传输消息中携带有第二系统间信息传输类型信元，所述第 二系统间信息传输类型信元中携带有第二 RIM传输信元，所述第二 RIM传输 信元中携带有所述源小区的负载信息信元， 以供所述 SGSN或 MSC向目标 小区所属的目标 RNC发送第二直接信息传输消息，所述第二直接信息传输消 息中携带有所述第二系统间信息传输类型信元；
所述源接入控制设备接收所述目标接入控制设备根据所述基于 RIM机制 的负载信息请求消息通过核心网所返回的基于 RIM 机制的负载信息响应消 息， 所述基于 RIM机制的负载信息响应消息中携带有所述目标小区的负载信 息包括：
所述源 eNB接收所述 SGSN或 MSC所返回的第一 MME直接信息传输 消息， 所述第一 MME直接信息传输消息为所述 SGSN或 MSC根据所述目 标 RNC所返回的第一直接信息传输消息所返回的，所述第一直接信息传输消 息中携带有第一系统间信息传输类型信元， 所述第一系统间信息传输类型信 元中携带有第一 RIM传输信元，所述第一 RIM传输信元中携带有所述目标小 区的负载信息信元， 所述第一 MME直接信息传输消息中携带有所述第一系 统间信息传输类型信元。
12、 根据权利要求 8所述的方法， 其特征在于， 所述无线接入技术系统 间切换为 GERAN向 UTRAN的切换，
所述源小区所属的源接入控制设备通过核心网向目标小区所属的目标接 入控制设备发送基于 RIM机制的负载信息请求消息包括：
源小区所属的源 BSS向 SGSN或 MSC发送第二 RIM协议数据单元传 输请求相关消息， 所述第二 RIM协议数据单元传输请求相关消息中携带有第 三 RIM容器信元，所述第三 RIM容器信元中携带有所述源小区的负载信息信 元， 以供所述 SGSN或 MSC向目标小区所属的目标 RNC发送第三直接信 息传输消息， 所述第三直接信息传输消息中携带有第三系统间信息传输类型 信元， 所述第三系统间信息传输类型信元中携带有第三 RIM传输信元， 所述 第三 Rl M传输信元中携带有所述源小区的负载信息信元；
所述源接入控制设备接收所述目标接入控制设备根据所述基于 RIM机制 的负载信息请求消息通过核心网所返回的基于 RIM 机制的负载信息响应消 息， 所述基于 RIM机制的负载信息响应消息中携带有所述目标小区的负载信 息包括：
所述源 BSS接收所述 SGSN或 MSC所返回的第二 RIM协议数据单元 传输指示相关消息， 所述第二 RIM 协议数据单元传输指示相关消息为所述 SGSN或 MSC根据所述目标 RNC所返回的第一直接信息传输消息所返回 的， 所述第一直接信息传输消息中携带有第一系统间信息传输类型信元， 所 述第一系统间信息传输类型信元中携带有第一 RIM传输信元， 所述第一 RIM 传输信元中携带有所述目标小区的负载信息信元， 所述第二 RIM协议数据单 元传输指示相关消息中携带有第四 RIM容器信元，所述第四 RIM容器信元中 携带有所述目标小区的负载信息信元。
13、 根据权利要求 8所述的方法， 其特征在于， 所述无线接入技术系统 间切换为 GERAN向 E-UTRAN的切换，
所述源小区所属的源接入控制设备通过核心网向目标小区所属的目标接 入控制设备发送基于 RIM机制的负载信息请求消息包括：
源小区所属的源 BSS向 SGSN或 MSC发送第二 RIM协议数据单元传 输请求相关消息， 所述第二 RIM协议数据单元传输请求相关消息中携带有第 三 RIM容器信元，所述第三 RIM容器信元中携带有所述源小区的负载信息信 元， 以供所述 SGSN或 MSC向目标小区所属的目标 eNB发送第二 MME直 接信息传输消息， 所述第二 MME直接信息传输消息中携带有第三系统间信 息传输类型信元， 所述第三系统间信息传输类型信元中携带有第三 RIM传输 信元， 所述第三 RIM传输信元中携带有所述源小区的负载信息信元；
所述源接入控制设备接收所述目标接入控制设备根据所述基于 RIM机制的 负载信息请求消息通过核心网所返回的基于 RIM机制的负载信息响应消息， 所 述基于 RIM机制的负载信息响应消息中携带有所述目标小区的负载信息包括： 所述源 BSS接收所述 SGSN或 MSC所返回的第三 RIM协议数据单元 传输指示相关消息， 所述第三 RIM 协议数据单元传输指示相关消息为所述 SGSN或 MSC根据所述目标 eNB所返回的 eNB直接信息传输消息所返回， 所述 eNB直接信息传输消息中携带有第二系统间信息传输类型信元，所述第 二系统间信息传输类型信元中携带有第二 RIM传输信元，所述第二 RIM传输 信元中携带有所述目标小区的负载信息信元， 所述第三 RIM协议数据单元传 输指示相关消息中携带有第五 RIM容器信元，所述第五 RIM容器信元中携带 有所述目标小区的负载信息信元。
14、 根据权利要求 8所述的方法， 其特征在于， 所述无线接入技术系统 间切换为 E-UTRAN向 GERAN的切换，
所述源小区所属的源接入控制设备通过核心网向目标小区所属的目标接 入控制设备发送基于 RIM机制的负载信息请求消息包括：
源小区所属的源 eNB向 SGSN或 MSC发送 eNB直接信息传输消息， 所述 eNB直接信息传输消息中携带有第二系统间信息传输类型信元，所述第 二系统间信息传输类型信元中携带有第二 RIM传输信元，所述第二 RIM传输 信元中携带有所述源小区的负载信息信元， 以供所述 SGSN或 MSC向目标 小区所属的目标 BSS发送第三 RIM协议数据单元传输请求相关消息， 所述 第三 RIM协议数据单元传输请求相关消息中携带有第六 RIM容器信元，所述 第六 Rl M容器信元中携带有所述源小区的负载信息信元；
所述源接入控制设备接收所述目标接入控制设备根据所述基于 RIM机制的 负载信息请求消息通过核心网所返回的基于 RIM机制的负载信息响应消息， 所 述基于 RIM机制的负载信息响应消息中携带有所述目标小区的负载信息包括： 所述源 eNB接收所述 SGSN或 MSC所返回的第二 MME直接信息传输 消息， 所述第二 MME直接信息传输消息为所述 SGSN或 MSC根据所述目 标 BSS所返回的第一 RIM协议数据单元传输指示相关消息所返回的， 所述 第一 RIM协议数据单元传输指示相关消息中携带有第二 RIM容器信元，所述 第二 RIM容器信元中携带有所述目标小区的负载信息信元， 所述第二 MME 直接信息传输消息中携带有第三系统间信息传输类型信元， 所述第三系统间 信息传输类型信元中携带有第三 RIM传输信元，所述第三 RIM传输信元中携 带有所述目标小区的负载信息信元。
15、 根据权利要求 6~14任一权利要求所述的方法， 其特征在于， 所述 目标小区的个数为一个或多个。
16、 一种接入控制设备， 其特征在于， 包括：
第一发送模块， 用于当进行不同无线接入技术系统间 PS域切换时， 通 过核心网向目标小区所属的目标接入控制设备发送无线接入技术系统间切换 请求消息；
第一接收模块，用于接收所述目标接入控制设备根据所述无线接入技术系 统间切换请求消息通过核心网所返回的无线接入技术系统间切换响应消息，所 述无线接入技术系统间切换响应消息中携带有所述目标小区的负载信息。
17、 一种接入控制设备， 其特征在于， 包括：
第三发送模块， 用于进行不同无线接入技术系统间切换之前， 通过核心网 向目标小区所属的目标接入控制设备发送基于 RIM机制的负载信息请求消息； 第三接收模块， 用于接收所述目标接入控制设备根据所述基于 RIM机制 的负载信息请求消息通过核心网所返回的基于 RIM机制的负载信息响应消息， 所述基于 RIM机制的负载信息响应消息中携带有所述目标小区的负载信息。
18、 一种负载信息的获取系统， 其特征在于， 包括源无线接入技术系统 中源小区所属的第一源接入控制设备和目标无线接入技术系统中目标小区所 属的第一目标接入控制设备，
所述第一源接入控制设备用于当进行不同无线接入技术系统间 PS域切 换时， 通过核心网向目标小区所属的第一目标接入控制设备发送无线接入技 术系统间切换请求消息， 以及接收所述第一目标接入控制设备通过核心网所 返回的无线接入技术系统间切换响应消息， 所述无线接入技术系统间切换响 应消息中携带有所述目标小区的负载信息；
所述第一目标接入控制设备用于接收源小区所属的第一源接入控制设备 通过核心网发送的无线接入技术系统间切换请求消息， 以及通过核心网向所 述第一源接入控制设备返回所述无线接入技术系统间切换响应消息。
19、 一种负载信息的获取系统， 其特征在于， 包括源无线接入技术系统 中源小区所属的第二源接入控制设备和目标无线接入技术系统中目标小区所 属的第二目标接入控制设备，
所述第二源接入控制设备用于进行不同无线接入技术系统间切换之前， 通过核心网向目标小区所属的第二目标接入控制设备发送基于 RIM机制的负 载信息请求消息， 以及接收所述第二目标接入控制设备通过核心网所返回的 基于 RIM机制的负载信息响应消息，所述基于 RIM机制的负载信息响应消息 中携带有所述目标小区的负载信息；
所述第二目标接入控制设备接收源小区所属的源接入控制设备通过核心 网发送的基于 RIM机制的负载信息请求消息， 以及通过核心网向所述第二源 接入控制设备返回所述基于 RIM机制的负载信息响应消息。
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