WO2014176982A1 - Procédé et dispositif de traitement à double connexion et élément de réseau d'un réseau central - Google Patents

Procédé et dispositif de traitement à double connexion et élément de réseau d'un réseau central Download PDF

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Publication number
WO2014176982A1
WO2014176982A1 PCT/CN2014/075605 CN2014075605W WO2014176982A1 WO 2014176982 A1 WO2014176982 A1 WO 2014176982A1 CN 2014075605 W CN2014075605 W CN 2014075605W WO 2014176982 A1 WO2014176982 A1 WO 2014176982A1
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Prior art keywords
connection
core network
network element
base station
base stations
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Ceased
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PCT/CN2014/075605
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English (en)
Chinese (zh)
Inventor
陈中明
杜忠达
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ZTE Corp
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ZTE Corp
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • 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
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • H04W36/00692—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink using simultaneous multiple data streams, e.g. cooperative multipoint [CoMP], carrier aggregation [CA] or multiple input multiple output [MIMO]

Definitions

  • the present invention relates to the field of communications, and in particular, to a dual connectivity processing method and apparatus, and a core network element.
  • 1 is a schematic diagram of an overall architecture of a Long Term Evolution (LTE) system.
  • the LTE architecture includes a Mobility Management Entity (MME) service.
  • MME Mobility Management Entity
  • a gateway Serving GetWay, abbreviated as SGW
  • UE user equipment
  • eNodeB eNodeB
  • eNB base station
  • S 1 -MME SI for the control plane
  • X2 X2 interface between the eNBs.
  • the process of establishing a call by the terminal that is, establishing a control plane link and a user plane link between the UE and the eNB, and a process of controlling a plane link and a user plane link between the eNB and the core network.
  • the user plane GTP-U data of the different services on the connection between the eNB and the core network is carried by an E-UTRAN Radio Access Bearer (EBB), and the control plane is through the eNB and the core network (MME). )
  • EBB E-UTRAN Radio Access Bearer
  • MME core network
  • the user plane connection between the eNB and the UE is carried by a Data Radio Bearer (DRB), and the control connection is carried by a Signalling Radio Bearer (SRB).
  • DRB Data Radio Bearer
  • SRB Signalling Radio Bearer
  • 2 is a flowchart of a process of establishing, modifying, and deleting a radio bearer in the related art. As shown in FIG. 2, (a) is a flowchart for establishing a radio bearer in the related art, and (b) is a radio bearer modified in the related art. Flowchart, (c) is a flow chart for radio bearer deletion in the related art. Due to the surge in mobile users' high-traffic services, and in order to increase user throughput and enhance mobile performance, many companies and operators are eager to seek a new enhancement solution. Dual Connectivity is one of them.
  • the dual-connected terminal can maintain connection with more than two network nodes at the same time.
  • the transmission delay between these network nodes cannot be ignored.
  • the UE keeps connected with two macro cells at the same time, or maintains connection with the macro cell and the micro cell at the same time.
  • the network side can adjust the amount of data transmitted by the terminal on the two nodes in real time.
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • These two networks may be different operators or the same network.
  • One carrier, but different device vendors, so, the base in both networks There may not be a direct interface between the stations (similar to the existing X2 interface).
  • a dual connection processing method including: a core network element determines that one or more second base stations establish a connection with a terminal; and the core network element performs processing on a dual connection, where The dual connection establishes a connection between the terminal that has established a connection with the first base station and the one or more second base stations.
  • the processing, by the core network element, the dual network connection comprises: the core network element processing a connection between the terminal and the one or more second base stations; A unit establishes a connection with the one or more second base stations.
  • the process of establishing a connection between the terminal and the one or more second base stations by the core network element includes: receiving, by the core network element, a request message from the first base station, where The request message is used to request to establish a connection between the one or more second base stations and the terminal that has established a connection with the first base station; the core network element sends the request message to the The one or more second base stations; the core network element sends a response message from the one or more second base stations to the first base station, where the response message carries the one or The plurality of second base stations are configured to establish connection configuration information, and the terminal establishes a connection with the one or more second base stations according to the configuration information.
  • the processing, by the core network element, the double connection comprises: modifying, by the core network element, the dual connection.
  • the processing, by the core network element, the dual connectivity includes: deleting, by the core network element, the dual connection.
  • the first base station, the one or more second base stations are at least one of the following: a frequency division duplex system base station, a time division duplex system base station.
  • the first base station, the one or more second base stations are at least one of the following: a macro base station, a micro base station.
  • a dual connectivity processing apparatus including: a determining module, configured to determine, by a core network element, one or more second base stations to establish a connection with a terminal; and a processing module, configured to be the core network
  • the network element processes the dual connection, wherein the dual connection establishes a connection between the terminal that establishes a connection with the first base station and the one or more second base stations.
  • the processing module includes: a processing unit, configured to process, by the core network element, a connection between the terminal and the one or more second base stations; and establishing a unit, configured as the core network The network element establishes a connection with the one or more second base stations.
  • the processing unit includes: a receiving subunit, configured to receive a request message from the first base station, where the request message is used to request the one or more second base stations and the first Establishing a connection between the terminals that establish a connection by a base station; a first sending subunit, configured to send the request message to the one or more second base stations; and a second sending subunit, configured to Transmitting, by the one or more second base stations, a response message to the first base station, where the response message carries configuration information that is used by the one or more second base stations to establish a connection, where the terminal is configured according to the The configuration information establishes a connection with the one or more second base stations.
  • a receiving subunit configured to receive a request message from the first base station, where the request message is used to request the one or more second base stations and the first Establishing a connection between the terminals that establish a connection by a base station
  • a first sending subunit configured to send the request message to the one or more second base stations
  • the processing module includes: a modifying unit, configured to modify, by the core network element, the dual connection.
  • the processing module includes: a deleting unit, configured to perform, by the core network element, a deletion process on the dual connection.
  • a core network element is provided, comprising the apparatus of any of the above. According to the present invention, the core network element is used to determine that one or more second base stations establish a connection with the terminal; the core network element performs processing on the dual connection, wherein the dual connection is a terminal that establishes a connection with the first base station.
  • FIG. 1 is a schematic diagram of an overall architecture of a long term evolution system LTE in the related art
  • 2 is a flowchart of a process of establishing, modifying, and deleting a radio bearer in the related art
  • FIG. 3 is a flowchart of a dual connectivity processing method according to an embodiment of the present invention
  • FIG. 4 is a dual connectivity processing apparatus according to an embodiment of the present invention
  • Figure 5 is a block diagram of a preferred block diagram of a processing module 44 in a dual connectivity processing device in accordance with an embodiment of the present invention
  • Figure 6 is a preferred configuration of processing unit 52 in processing module 44 in a dual connectivity processing device in accordance with an embodiment of the present invention.
  • FIG. 7 is a block diagram of a preferred structure of a processing module 44 in a dual connectivity processing device in accordance with an embodiment of the present invention
  • Figure 8 is a block diagram 3 of a preferred configuration of a processing module 44 in a dual connectivity processing device in accordance with an embodiment of the present invention
  • FIG. 10 is a schematic structural diagram of a dual connection according to a preferred embodiment of the present invention
  • FIG. 11 is a schematic diagram of a dual connection establishment process according to a preferred embodiment of the present invention
  • FIG. 13 is a flow of a dual connectivity deletion procedure in accordance with a preferred embodiment of the present invention Fig.
  • FIG. 3 is a flowchart of a dual connectivity processing method according to an embodiment of the present invention. As shown in FIG. 3, the process includes the following steps: Step S302, a core network element Determining that one or more second base stations establish a connection with the terminal; Step S304, the core network element performs processing on the dual connection, where the dual connection is a terminal that establishes a connection with the first base station and one or more second base stations establish connection.
  • the core network determines that one or more second base stations establish a connection with the terminal, and the core network element performs processing on the dual connection.
  • the processing of the dual network by the core network includes various aspects, for example, including processing, by the core network element, establishing a connection between the terminal and the one or more second base stations; and establishing, by the core network element, one or more second The connection between base stations.
  • the method further includes: modifying, by the core network element, the dual connection.
  • the method further includes: deleting, by the core network element, the dual connection.
  • the core network element processing the dual connection may adopt the following process: the core network element receives the request message from the first base station, where the request message is used to request the one or more second base stations and A base station establishes a connection between the connected terminals; after processing the request message by the core network element, the request message is sent to one or more second base stations; the core network element will be from one or more second The response message of the base station is sent to the first base station, where the response message carries configuration information for establishing the connection by the one or more second base stations, and the terminal establishes a connection with one or more second base stations according to the configuration information.
  • first base station, one or more second base stations may be in multiple formats, for example, at least one of the following: a frequency division duplex system base station, and a time division duplex system base station.
  • the type of the base station may also be multiple.
  • the first base station, the one or more second base stations are at least one of the following: a macro base station, a micro base station.
  • a dual-connection processing device is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and has not been described again.
  • the term "module" may implement a combination of software and/or hardware of a predetermined function.
  • FIG. 4 is a block diagram showing the structure of a dual connectivity processing apparatus according to an embodiment of the present invention.
  • the apparatus includes a determination module 42 and a processing module 44, which will be described below.
  • the determining module 42 is configured to determine, by the core network element, that one or more second base stations establish a connection with the terminal;
  • the processing module 44 is connected to the determining module 42 and configured to process the dual connection by the core network, where the dual connection is
  • the first base station establishes a connection between the connected terminal and one or more second base stations.
  • FIG. 5 is a block diagram of a preferred structure of the processing module 44 in the dual connectivity processing apparatus according to an embodiment of the present invention.
  • the processing module 44 includes: a processing unit 52 and an establishing unit 54, and the processing module 44 is Be explained.
  • the processing unit 52 is configured to process, by the core network element, a connection between the terminal and one or more second base stations; and the establishing unit 54 is configured to establish a connection between the core network element and one or more second base stations.
  • . 6 is a block diagram showing a preferred structure of a processing unit 52 in a processing module 44 in a dual connectivity processing apparatus according to an embodiment of the present invention. As shown in FIG.
  • the processing unit 52 includes a receiving subunit 62, a first transmitting subunit 64, and a The second transmitting subunit 66 will be described below.
  • the receiving sub-unit 62 is configured to receive a request message from the first base station, where the request message is used to request to establish a connection between the one or more second base stations and the terminal that has established a connection with the first base station;
  • the subunit 64 is connected to the receiving subunit 62, and is configured to send the request message to one or more second base stations;
  • the second sending subunit 66 is connected to the first sending subunit 64, and is configured to be from a Or the response message of the second base station is sent to the first base station, where the response message carries one or more second base stations for establishing connection configuration information, and the terminal according to the configuration information and one or more second base stations establish connection.
  • FIG. 7 is a block diagram 2 showing a preferred structure of the processing module 44 in the dual connectivity processing apparatus according to an embodiment of the present invention.
  • the processing module 44 includes a modification unit 72, which will be described below.
  • the modifying unit 72 is configured to modify the dual connectivity by the core network element.
  • FIG. 8 is a block diagram 3 showing a preferred structure of the processing module 44 in the dual connectivity processing apparatus according to the embodiment of the present invention.
  • the processing module 44 includes a deleting unit 82.
  • the deleting unit 82 will be described below.
  • the deleting unit 82 is configured to delete the double connection by the core network element.
  • FIG. 9 is a structural block diagram of a core network element according to an embodiment of the present invention. As shown in FIG.
  • the core network element 90 includes the dual connectivity processing device 92 of any of the above.
  • a dual connection management method is proposed, which is managed by the core network for dual connectivity, and the current terminal establishes a connection with the first base station.
  • the method generally includes the following steps: Step 1: The core network and the second base station confirm that the connection can be established with the terminal; Step 2: The core network notifies the first base station and the terminal to establish a connection with the second base station; Step 3: The core network is established and the first The connection of two base stations.
  • the terminal can perform normal high-speed data services, and improve the performance and user experience of the user data service.
  • FIG. 10 is a schematic structural diagram of a dual connection according to a preferred embodiment of the present invention.
  • a UE establishes a connection with two eNBs to access a core network
  • two base stations that are dual-connected The (or network) system has no effect on the implementation of the present invention, that is, the dual connectivity of the terminal can be two FDDs, or two TDDs, or one FDD-TDD.
  • the categories of the two base stations are also not limited, and may be two macro base stations, two micro base stations, or a macro base station and a micro base station.
  • the processes of three connections, four connections, etc. are similar to the double connections, and the description will not be repeated.
  • Step S1102 The base station 1 sends a measurement task to the terminal.
  • Step S1104 The base station 1 receives the measurement report reported by the terminal.
  • Step S1106 The terminal traffic increases or adds a new service.
  • Step S1108 The terminal traffic increases, and the base station 1 passes.
  • the measurement report reported by the terminal finds that the cell 2 signal of the base station 2 is very good, and determines to increase the cell 2; in step S1110, the base station 1 sends a request message for adding the cell 2 of the base station 2 to the MME, and the base station 1 sends a request for the cell to the MME.
  • the message may include the following information: the identifier of the base station 2, the identifier of the cell 2, and may also carry the following information: the measurement result; in step S1112, the MME receives the add cell request message, and sends a request message for adding the cell to the base station 2, including the cell 2
  • the identifier may further include an IP address of the S-GW.
  • Step S1114 The base station 2 confirms the request, and returns a response message to the MME, allowing The cell 2 is added, and the configuration information of the cell 2 is carried, and the IP address of the base station 2 is received.
  • the MME receives the response message, and sends a radio bearer request to the base station 1, allowing the cell 2 to be added, and the IP address of the base station 2 can be carried. And carrying the indication that the GTP-U tunnel is not required to be established; in step S1118, the base station 1 receives the radio bearer setup request, and configures the cell 2 to the terminal, and can notify the terminal to add the cell 2 by using the configuration information; Step S1120, the terminal receives the configuration.
  • FIG. 12 is a flowchart of dual connectivity modification according to an embodiment of the present invention. As shown in FIG.
  • Step S1202 The base station 1 sends a measurement task to the terminal.
  • step S1204 the base station 1 receives the measurement report reported by the terminal.
  • step S1206 the base station 1 discovers the cell of the base station 2 by using the measurement report reported by the terminal.
  • Step S1208 the base station 1 sends a request message to the MME for adding the cell to the MME, and the request message is used to request to delete the cell 2 and add the cell 3 of the base station.
  • the request message may include the following information of the added cell: the identifier of the base station 2, the identifier of the cell 3, and may also carry the following information: the measurement result; and the message of deleting the cell, including the following information: identifier of the base station 2, cell 2 Identification; It should be noted that the above two messages can be combined and sent in one message, or merged into a cell modification message, ie, cell 2 repair
  • the cell 3 is changed to the cell 3 and carries the identifiers of the cell 2 and the cell 3; in step S1210, the MME receives the request message for adding the cell to delete the cell, sends a request message for deleting the cell to the base station 2, and sends a request message for adding the cell to the base station 2,
  • the identifier of the cell 3 may further include an IP address of the S-GW, and send a request message for deleting the cell, including the identifier of the cell 2.
  • the two messages may be combined and sent in one message, or merged into a cell modification message, that is, the cell 2 Modifying to the cell 3, carrying the identifiers of the cell 2 and the cell 3, may also include the IP address of the S-GW; Step S1212, the base station 2 confirms the request, returns a response message to the MME, allows the cell 2 to be deleted, the cell 3 is added, and the cell 3 is carried.
  • the configuration information may also carry the IP address of the base station 2, or be merged into a cell modification message, that is, the cell 2 is allowed to be modified into the cell 3, and the configuration information of the cell 3 may be carried, and the IP address of the base station 2 may be carried;
  • Step S1214 MME Receiving a response message, sending a radio bearer request to the base station 1, that is, allowing the cell 2 to be deleted, adding the cell 3, and carrying the base
  • the IP address of the 2, and the carrying indication does not need to establish a GTP-U tunnel;
  • the base station 1 receives the radio bearer setup request, and configures the cell 3 to the terminal, that is, the terminal deletes the cell 2 and adds the cell 3, and carries the cell 3 Identifying and configuring the information, and deleting the cell 2, carrying the identity of the cell 2, or merging into a cell modification message, that is, the cell 2 is modified into the cell 3, carrying the identity and configuration information of the cell 3, and the identifier of the cell 2;
  • Step S1218
  • Step S1224 the MME receives the added cell deletion complete message of the base station 1, or merges into a cell modification complete message, and sends a message to the S-GW to establish a path with the cell 3, including the identifier and/or IP address of the cell 3.
  • Deleting the path with cell 2 may include the identity and/or IP address of cell 2, or merge into a cell modification message, that is, cell 2 is modified into cell 3, including the identity and/or IP address of cell 3, the identity of cell 2, and/or IP address;
  • Step S1226 the S-GW establishes a GTP-U tunnel with the cell 3, deletes the GTP-U tunnel with the cell 2, and returns the MME tunnel establishment and tunnel deletion completion, or merges into a tunnel modification complete message.
  • the added cell and the deleted cell message are separately transmitted, that is, the added cell is sent to the base station 3, and the deleted cell is sent to the base station 2.
  • 13 is a flowchart of a dual-connection deletion process according to a preferred embodiment of the present invention.
  • the terminal establishes a connection with the cell 1 on the base station 1 and the cell 2 on the base station 2, and the cell 1 is in the FDD system.
  • the base station 2 is a TDD system.
  • the process includes the following steps: Step S1302: The base station 1 sends a measurement task to the terminal.
  • Step S1304 The base station 1 receives the measurement report reported by the terminal.
  • Step S1306 The base station 1 finds that the cell 2 signal of the base station 2 is not good through the measurement report reported by the terminal. And the terminal traffic is not very large, and it is decided to delete the cell 2; in step S1308, the base station 1 sends a message for deleting the cell to the terminal, and carries the identifier of the cell 2; Step S1310, the terminal receives the deletion message, deletes the cell 2, and sends the cell 2 to the base station 1. The reply deletion is completed.
  • Step S1312 The base station 1 sends a delete cell message to the MME, and carries the identifier of the cell 2.
  • step S1314 the MME receives the delete cell message of the base station 1, and sends a message to the S-GW to delete the GTP-U tunnel of the cell 2.
  • the path may include the IP address of the cell 2; in step S1316, the S-GW deletes the GTP-U tunnel with the cell 2, and returns the MME tunnel deletion completion.
  • the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.
  • Industrial Applicability As described above, the dual connection processing method and apparatus and the core network element provided by the embodiments of the present invention have the following beneficial effects: The problem that the dual connection cannot be managed and controlled in the related art is solved, and the problem is achieved. The effect of effective management control of dual connectivity by the core network.

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

Abstract

La présente invention concerne un procédé et un dispositif de traitement à double connexion, ainsi qu'un élément de réseau d'un réseau central. Le procédé comprend les étapes suivantes : un élément de réseau d'un réseau central détermine qu'une ou plusieurs secondes stations de base établissent une connexion avec un terminal ; et l'élément de réseau du réseau central traite les doubles connexions, les doubles connexions signifiant que le terminal qui a établi une connexion avec une première station de base établit la connexion avec la ou les secondes stations de base. La présente invention règle le problème en l'état de la technique, selon lequel les doubles connexions ne peuvent pas être gérées et commandées et réalise l'effet selon lequel les doubles connexions sont efficacement gérées et commandées par le réseau central.
PCT/CN2014/075605 2013-08-08 2014-04-17 Procédé et dispositif de traitement à double connexion et élément de réseau d'un réseau central Ceased WO2014176982A1 (fr)

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CN201310344608.1A CN104349300A (zh) 2013-08-08 2013-08-08 双连接处理方法、装置及核心网网元
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CN113543258B (zh) * 2019-09-23 2023-06-30 Oppo广东移动通信有限公司 系统互操作的方法及装置
US11974177B2 (en) 2019-09-23 2024-04-30 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Method and apparatus for system interworking
WO2025209030A1 (fr) * 2024-04-03 2025-10-09 华为技术有限公司 Procédé et appareil de communication

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