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WO2017024453A1 - 连接控制装置及方法 - Google Patents

连接控制装置及方法 Download PDF

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Publication number
WO2017024453A1
WO2017024453A1 PCT/CN2015/086407 CN2015086407W WO2017024453A1 WO 2017024453 A1 WO2017024453 A1 WO 2017024453A1 CN 2015086407 W CN2015086407 W CN 2015086407W WO 2017024453 A1 WO2017024453 A1 WO 2017024453A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
bearer
enb
radio bearer
request message
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2015/086407
Other languages
English (en)
French (fr)
Inventor
蔺波
王宏
李亚娟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2015/086407 priority Critical patent/WO2017024453A1/zh
Priority to JP2018506138A priority patent/JP6496079B2/ja
Priority to CN201580082085.5A priority patent/CN107852759B/zh
Priority to EP15900651.9A priority patent/EP3322253B1/en
Publication of WO2017024453A1 publication Critical patent/WO2017024453A1/zh
Priority to US15/890,453 priority patent/US10873980B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/11Allocation or use of connection identifiers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0016Hand-off preparation specially adapted for end-to-end data sessions
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/006Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/21Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/51Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/20Manipulation of established connections
    • H04W76/22Manipulation of transport tunnels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/26Network addressing or numbering for mobility support
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements, protocols or services for addressing or naming
    • H04L61/50Address allocation
    • H04L61/5007Internet protocol [IP] addresses
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W36/00Hand-off or reselection arrangements
    • H04W36/0005Control or signalling for completing the hand-off
    • H04W36/0011Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/14Direct-mode setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • H04W88/04Terminal devices adapted for relaying to or from another terminal or user
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • H04W88/06Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a connection control apparatus and method.
  • the communication network When the communication network is deployed, it cannot fully guarantee the complete and seamless coverage of the network. Especially in the case of natural disasters (such as earthquakes, tsunamis, etc.), the base station may be damaged, which leads to the termination of the terminal and the base station within the coverage of the base station. Inter-communication is interrupted.
  • natural disasters such as earthquakes, tsunamis, etc.
  • the D2D communication mode is that the user equipment directly communicates with the user equipment, and the data transmission between the two base stations and the network does not need to be performed between the two, and the network signal coverage is weak and the public emergency is dealt with to a certain extent (Public Safety).
  • Public Safety The weakness of existing communication networks such as accidents.
  • FIG. 1 A deployment scenario of the D2D communication mode is shown in FIG. 1.
  • the UE a located outside the coverage area (the elliptical area shown in the figure) of the STA (Station) can perform D2D with the UE x in the coverage area of the STA.
  • Communication enables the UE a to communicate with the UE x when it is unable to communicate with the STA.
  • the UE a can communicate with the UE x located in the coverage area of the STA when the UE a cannot communicate with the STA, but the UE a cannot access the network through the STA.
  • UE a can establish a communication connection with the STA and perform data transmission with the STA through the STA.
  • the terminal usually has the mobility capability, when the UE a is removed from the STA coverage, although the UE a can perform D2D communication with the UE x, the UE a cannot access the network through the UE x at this time, so that the UE a The interruption of data transmission with the network affects the network service quality of UE a.
  • the present invention provides a connection control apparatus and method for solving the problem that a terminal cannot access a network through a STA when performing a D2D communication connection between a terminal and a terminal within the coverage area of the STA.
  • an apparatus including: a receiving unit, a sending unit, and a processing unit, where
  • the receiving unit is configured to receive a link configuration request message sent by the second terminal, where the link configuration request is The message carries the context information of the second terminal, where the context information includes at least the identifier ID of the second terminal;
  • the sending unit is configured to send, according to the link configuration request message, a bearer configuration request message to the network side device, where the bearer configuration request message includes: a radio bearer modification request message or a request bearer resource modification message, and the bearer configuration request
  • the message carries the context information, where the bearer configuration request message is used to request the network side device to configure a service bearer, and the service bearer is used to transmit service data of the second terminal;
  • the receiving unit is further configured to receive a bearer configuration completion message sent by the network side device according to the bearer configuration request message, where the bearer configuration completion message carries the service bearer ID;
  • the processing unit is configured to establish a mapping relationship between the service bearer and the second terminal;
  • the sending unit is further configured to send a link configuration complete message to the second terminal after the mapping relationship is established, so that the second terminal uses the service bearer, and the first terminal and the The network side device performs data transmission.
  • the sending unit sends a bearer configuration request message to the network side device according to the link configuration request message, specifically, to:
  • the first radio bearer is configured to transmit service data of the second terminal.
  • the sending unit sends a bearer configuration request message to the network side device according to the link configuration request message, specifically, to:
  • the first eNB configures a first radio bearer between the first eNB and the first terminal, where the second S1 bearer and the first radio bearer are used to transmit service data of the second terminal.
  • the processing unit establishes a mapping relationship between the service bearer and the second terminal Specifically for:
  • the context information further includes a first IP address allocated by the data gateway P-GW to the second terminal;
  • the context information further includes a first IP address allocated by the data gateway P-GW to the second terminal.
  • the context information further includes: an original access cell ID of the second terminal,
  • the receiving unit is further configured to receive an original access cell ID of the second terminal in the context information
  • the sending unit is further configured to send the original access cell ID of the second terminal to the first eNB.
  • an apparatus including: a receiving unit, a sending unit, and a processing unit, where
  • the receiving unit is configured to receive a radio bearer modification request message sent by the first terminal, where the radio bearer modification request message carries the context information of the second terminal, where the context information includes at least the identifier of the second terminal. ID;
  • the processing unit is configured to configure, according to the radio bearer modification request message, a first radio bearer between the first eNB and the first terminal, where the first radio bearer is used to transmit the second terminal Business data;
  • the processing unit is further configured to: in the S1 bearer existing in the first eNB, search for a first S1 bearer corresponding to an ID of the second terminal;
  • the processing unit is further configured to establish a mapping relationship between the first radio bearer and the first S1 bearer.
  • the sending unit is configured to send a bearer configuration completion message to the first terminal after the mapping is established, where the bearer configuration completion message carries an ID of the first radio bearer.
  • the processing unit is configured to configure a first radio bearer between the first eNB and the first terminal, specifically:
  • the method further includes:
  • the receiving unit is further configured to receive an original access cell ID of the second terminal that is sent by the first terminal;
  • the processing unit is further configured to: when the ID of the first eNB is the same as the original access cell ID, according to the radio bearer modification request message, between the first eNB and the first terminal Configuring a first radio bearer;
  • the sending unit is further configured to: when the ID of the first eNB is different from the original access cell ID, send a handover request message to a source eNB corresponding to the original access cell ID;
  • the receiving unit is further configured to receive a handover confirmation message sent by the source eNB;
  • the processing unit is further configured to: when receiving the handover confirmation message, modify according to the radio bearer And requesting a message, configuring a first radio bearer between the first eNB and the first terminal.
  • an apparatus including: a receiving unit, a sending unit, and a processing unit, where
  • the receiving unit is configured to receive a request bearer resource modification message sent by the first terminal, where the request bearer resource modification message carries context information of the second terminal, where the context information includes at least the second terminal Identification ID;
  • the processing unit is configured to configure a second S1 bearer between the first eNB and the serving gateway S-GW according to the request bearer resource modification message, where the second S1 bearer is used to transmit the second terminal Business data;
  • the sending unit is configured to send a bearer resource command message to the first eNB according to the request bearer resource modification message, so that the first eNB configures the first eNB between the first eNB and the first terminal.
  • a radio bearer where the first radio bearer is used to transmit service data of the second terminal.
  • the processing unit is further configured to allocate, by the second terminal, an identifier of the second S1 bearer;
  • the sending unit is further configured to send a bearer resource command message to the S-GW, where the bearer resource command message carries the identifier of the second S1 bearer;
  • the receiving unit is further configured to receive a create bearer request message sent by the S-GW;
  • the sending unit is further configured to send an E-RAB modification request message to the first eNB according to the creating a bearer request message;
  • the receiving unit is further configured to receive an E-RAB modify bearer setup response message sent by the first eNB according to the E-RAB modification request message;
  • the sending unit is further configured to send a create bearer response message to the S-GW according to the E-RAB modify bearer setup response message, to establish the second between the S-GW and the first eNB. S1 bears.
  • connection control method comprising:
  • the first terminal receives the link configuration request message sent by the second terminal, where the link configuration request message carries the context information of the second terminal, where the context information includes at least the identifier ID of the second terminal;
  • the first terminal sends a bearer configuration request message to the network side device according to the link configuration request message, where the bearer configuration request message includes at least: a radio bearer modification request message or a request bearer resource modification message, and the bearer configuration request message And carrying the context information, where the bearer configuration request message is used to request the network side device to configure a service bearer, where the service bearer is used to transmit service data of the second terminal;
  • the first terminal receives a bearer configuration completion message sent by the network side device according to the bearer configuration request message, where the bearer configuration completion message carries the service bearer ID;
  • the first terminal establishes a mapping relationship between the service bearer and the second terminal
  • the first terminal After the first terminal establishes the mapping relationship, the first terminal sends a link configuration complete message to the second terminal, so that the second terminal uses the service bearer to pass the first terminal and the network side device. Data transfer.
  • the first terminal sends a bearer configuration request message to the network side device according to the link configuration request message, including:
  • the first radio bearer is configured to transmit the service data of the second terminal.
  • the first terminal sends a bearer configuration request message to the network side device according to the link configuration request message, including:
  • the first terminal sends a request bearer resource modification message to the mobility management entity MME according to the context information, so that the MME configures a second S1 bearer between the first eNB and the serving gateway S-GW, and
  • the MME is configured to control the first eNB to configure a first radio bearer between the first eNB and the first terminal, where the second S1 bearer and the first radio bearer are used to transmit the first radio bearer.
  • Second terminal business data business data.
  • the first terminal establishes a mapping relationship between the service bearer and the second terminal ,include:
  • the first terminal establishes a mapping relationship between an ID of the first radio bearer and an ID of the second terminal;
  • the first terminal establishes a mapping relationship between the ID of the first radio bearer and the first IP address, where the context information further includes a first IP address allocated by the data gateway P-GW to the second terminal;
  • the first terminal allocates a second IP address to the second terminal, and establishes a mapping relationship between the first IP address and the second IP address, and establishes an ID of the first radio bearer. a mapping relationship of the second IP address, where the context information further includes a first IP address allocated by the P-GW to the second terminal
  • the first terminal sends the original access cell ID of the second terminal to the first eNB.
  • connection control method comprising:
  • the first base station eNB receives the radio bearer modification request message sent by the first terminal, where the radio bearer modification request message carries the context information of the second terminal, where the context information includes at least the second terminal Identification ID;
  • the first eNB configures a first radio bearer between the first eNB and the first terminal according to the radio bearer modification request message, where the first radio bearer is used to transmit the service of the second terminal. data;
  • the first eNB searches for the first S1 bearer corresponding to the ID of the second terminal in the S1 bearer that exists in the first eNB;
  • the first eNB establishes a mapping relationship between the first radio bearer and the first S1 bearer
  • the first eNB After the first eNB establishes the mapping relationship, the first eNB sends a bearer configuration complete message to the first terminal, where the bearer configuration complete message carries the ID of the first radio bearer.
  • the configuring, by the first eNB, the first radio bearer between the first eNB and the first terminal includes:
  • the first eNB configures an existing radio bearer between the first eNB and the first terminal as the first radio bearer, and the existing radio bearer is used to transmit services of other second terminals. data;
  • the first eNB establishes a first radio bearer between the first eNB and the first terminal.
  • the method further includes:
  • the first eNB configures the first between the first eNB and the first terminal according to the radio bearer modification request message.
  • Radio bearer
  • the first eNB when the ID of the first eNB is different from the original access cell ID, the first eNB sends a handover request message to the source eNB corresponding to the original access cell ID; when receiving the source eNB, The first eNB configures a first radio bearer between the first eNB and the first terminal according to the radio bearer modification request message.
  • connection control method comprising:
  • the mobility management entity MME receives the request bearer resource modification message sent by the first terminal, where the request bearer resource modification message carries the context information of the second terminal, where the context information includes at least the identifier ID of the second terminal. ;
  • the MME configures a second S1 bearer between the first eNB and the serving gateway S-GW according to the request bearer resource modification message, where the second S1 bearer is used to transmit service data of the second terminal;
  • the MME sends a bearer resource command message to the first eNB according to the request bearer resource modification message, so that the first eNB configures a first radio bearer between the first eNB and the first terminal,
  • the first radio bearer is configured to transmit service data of the second terminal.
  • the configuring the second S1 bearer between the first eNB and the S-GW includes:
  • the MME sends a bearer resource command message to the S-GW, where the bearer resource command message carries the identifier of the second S1 bearer;
  • the MME sends a create bearer response message to the S-GW according to the E-RAB modify bearer setup response message, to establish the second S1 bearer between the S-GW and the first eNB.
  • the first terminal by receiving the link configuration request of the second terminal, may request the network side device to configure a service bearer for the second terminal, so that the second terminal can pass the first terminal and the service bearer
  • the network side device performs data transmission.
  • the method can be implemented when the second terminal and the first terminal perform D2D communication, and the second terminal can also access the network by using the first terminal to perform data transmission, so that when the second terminal cannot directly access the base station, The network quality of the second terminal can be improved by the first terminal.
  • FIG. 1 is a deployment scenario diagram of a D2D communication mode
  • FIG. 2 is a schematic diagram of a network architecture that can be applied to a connection control method according to an embodiment of the present invention
  • FIG. 3 is a schematic flowchart of a connection establishment method according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of a bearer mapping method according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of another connection establishment method according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of another bearer mapping method according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of still another bearer mapping method according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of still another bearer mapping method according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of another network architecture that can be applied to a connection control method according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of still another bearer mapping method according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of still another network architecture that can be applied to a connection control method according to an embodiment of the present disclosure
  • FIG. 12 is a schematic flowchart diagram of still another method for establishing a connection according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic diagram of still another bearer mapping method according to an embodiment of the present invention.
  • FIG. 14 is a signaling flowchart provided by an embodiment of the present invention.
  • FIG. 15 is a signaling flowchart of another embodiment of the present invention.
  • FIG. 16 is a signaling flowchart provided by another embodiment of the present invention.
  • FIG. 17 is a schematic structural diagram of a connection control apparatus according to an embodiment of the present invention.
  • FIG. 18 is a schematic structural diagram of another connection control apparatus according to an embodiment of the present invention.
  • FIG. 19 is a schematic structural diagram of still another connection control apparatus according to an embodiment of the present invention.
  • FIG. 20 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 21 is a schematic structural diagram of an eNB according to an embodiment of the present disclosure.
  • FIG. 22 is a schematic structural diagram of an MME according to an embodiment of the present disclosure.
  • connection control method provided by the embodiment of the present invention can be applied to an LTE (Long Term Evolution) communication system, for example, TD-LTE (Time Division Long Term Evolution) or FDD-LTE (Frequency Division Dual Long).
  • LTE Long Term Evolution
  • FDD-LTE Frequency Division Dual Long
  • Term Evolution, frequency division duplex long-term evolution can also be applied to other communication systems, such as: WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, time division) CDMA (Global System for Mobile Communication).
  • WCDMA Wideband Code Division Multiple Access
  • TD-SCDMA Time Division-Synchronous Code Division Multiple Access, time division
  • CDMA Global System for Mobile Communication
  • FIG. 2 is a schematic diagram of a network architecture that can be applied to a connection control method according to an embodiment of the present invention.
  • the figure includes: a first terminal 1, a second terminal 2, and an first eNB (evolved NodeB, evolved base station).
  • eNB evolved NodeB, evolved base station
  • the first eNB 3 is connected to the network server 4, and the network server 4 may be an MME (Mobility Management Entity), an S-GW (Serving GateWay), and a P-GW (Public Data Network GateWay). Any one of the public data network gateways.
  • the network side device refers to the peer network device of the terminal in the communication network, and the first eNB 3 and the network server 4 in FIG. 2 can be referred to as a network side device.
  • connection control method provided by the embodiment of the present invention is described below by taking the first terminal as an example. As shown in FIG. 3, the connection establishment method includes the following steps:
  • the first terminal receives a link configuration request message sent by the second terminal.
  • the second terminal can send a link configuration request message to the first terminal by using a D2D communication manner.
  • the link configuration request message is used to request to establish a communication connection between the first terminal and the network device for transmitting the service data of the second terminal.
  • the second terminal may decide to connect to the first terminal, that is, perform D2D communication with the first terminal.
  • the triggering condition may be: the second terminal has an RLF (Radio Link Failure), or the signal quality between the second terminal and the eNB is lower than a threshold, or the second terminal is at the cell edge.
  • RLF Radio Link Failure
  • the second terminal Before performing the D2D communication, the second terminal first initiates a direct communication establishment request to the first terminal; if the first terminal accepts the D2D communication connection establishment request of the first terminal, the configuration information that is established in response to the second terminal D2D communication is used to complete After the D2D communication is established, when the second terminal receives the configuration information of the D2D communication establishment sent by the first terminal and completes the configuration, the D2D communication setup completion message is sent to the first terminal.
  • the link configuration request message may be a direct communication setup request message sent by the second terminal or a D2D communication setup complete message sent by the second terminal.
  • the link configuration request message may carry the context information of the second terminal, and the context information of the second terminal refers to the second terminal establishing a communication link with the network side device within the coverage of the original access base station.
  • Parameter information for example, an identifier ID of the second terminal, where the identifier ID of the second terminal may be an ID of the second terminal in the eNB or an ID of the second terminal in the MME, the S-GW, or the P-GW, and the The ID of the second terminal in the first eNB may be different from the ID of the second terminal in the MME, the S-GW, or the P-GW, where the ID of the second terminal in the first eNB may be C-RNTI (Cell Radio) Network Temporary Identifier, the ID of the MME, S-GW, or P-GW may be IMEI (International Mobile Equipment Identity), TMSI (Temporary Mobile Subscriber Identity) ), IMSI (International Mobile Subscriber Identification Number); the original access cell identifier ID of the second
  • the context information may also carry parameters such as the original access cell identifier ID of the second terminal or the first IP address allocated by the P-GW to the second terminal.
  • S102 The first terminal sends a bearer configuration request message to the network side device according to the link configuration request message.
  • the bearer configuration request message at least includes: a radio bearer modification request message or a request bearer resource modification message, and the bearer configuration request message usually carries the context information of the foregoing second terminal, and the bearer configuration request The function of the message is to request the network side device to configure the service bearer, and the service bearer is used to transmit the service data of the second terminal.
  • a service bearer refers to a link that can access a second terminal to a network via a first terminal.
  • the service bearer may be a radio bearer between the first terminal and the first eNB.
  • the radio bearer is also referred to as an end-to-end (End). -to End), correspondingly, the step S102 may comprise the following steps:
  • Radio Bearer Modification Request sending, by the first base station eNB, the radio bearer modification request message (Radio Bearer Modification Request), to the first base station eNB where the first terminal is located, according to the context information.
  • the first eNB After receiving the radio bearer modification request message, the first eNB configures a first radio bearer for the second terminal between the first eNB and the first terminal, and uses the first radio bearer as a service bearer for transmitting the second terminal service data.
  • the service bearer may be a radio bearer between the first terminal and the first eNB, and an EPS between the first eNB and the S-GW (Evolved Packet System, The evolved packet system bears the corresponding S1 bearer, that is, the service bearer is a link composed of the radio bearer and the S1 bearer.
  • the step S102 may include the following steps:
  • the MME After receiving the request bearer resource modification message, the MME configures a second S1 bearer between the first eNB and the S-GW for the second terminal, and the MME controls the first eNB to configure the first eNB between the first eNB and the first terminal.
  • a radio bearer, and the configured second S1 bearer and the first radio bearer are used as service bearers for transmitting second terminal service data.
  • the bearer between the S-GW and the P-GW may be referred to as an S5/S8 bearer, and the S5/S8 is established during the establishment of the S1 bearer. The following content is not specifically stated.
  • the S5/S8 bearer corresponding to the S1 bearer is also established by default.
  • S103 The first terminal receives a bearer configuration completion message sent by the network side device according to the bearer configuration request message.
  • the network side device After receiving the bearer update request, the network side device configures, for the second terminal, a service bearer that is accessed to the network via the first terminal. After the configuration is complete, the network side device generates a bearer configuration completion message and sends the message to the first terminal.
  • the bearer configuration complete message carries the ID of the service bearer, for example, the first radio bearer between the first terminal and the first eNB. ID.
  • S104 The first terminal establishes a mapping relationship between the service bearer and the second terminal.
  • the first terminal After determining that the network side device configures the service bearer for the second terminal, the first terminal establishes a mapping relationship between the service bearer and the second terminal locally, so that the first terminal can receive and transmit data according to the mapping relationship.
  • the uplink data of the second terminal may be sent to the service bearer, and in the downlink phase of the data, the service may be carried on the downlink of the second terminal.
  • the data is sent to the second terminal, thereby implementing data transmission between the second terminal and the network.
  • S105 The first terminal sends a link configuration complete message to the second terminal after establishing the mapping relationship.
  • the main purpose of the link configuration completion message is to notify the second terminal that the service bearer has been configured.
  • the second terminal can use the service bearer to perform data transmission by using the first terminal and the network side device.
  • the first terminal by receiving the link configuration request message of the second terminal, may request the network side device to configure a service bearer for the second terminal, so that the second terminal can use the service bearer to pass the The first terminal performs data transmission with the network side device.
  • the service bearer is the first radio bearer between the first terminal and the first eNB, or the first radio bearer between the first terminal and the first eNB, and between the first eNB and the gateway.
  • the second S1 carries the jointly formed link.
  • the ID of the service bearer may be represented by the ID of the first radio bearer.
  • step S104 in the embodiment shown in FIG. 3 may include the following steps:
  • the first terminal establishes a mapping relationship between the ID of the first radio bearer and the ID of the second terminal;
  • the first terminal establishes a mapping relationship between the ID of the first radio bearer and the first IP address, and the context information further includes a first IP address allocated by the data gateway P-GW to the second terminal;
  • the first terminal allocates a second IP address to the second terminal, and establishes a mapping relationship between the first IP address and the second IP address, and establishes a mapping relationship between the ID of the first radio bearer and the second IP address, and the context information.
  • the first IP address assigned by the data gateway P-GW to the second terminal is also included.
  • the method may further include the following steps for the uplink data:
  • the first terminal receives the uplink data sent by the second terminal by using the second IP address as the source IP address.
  • the uplink data of the second terminal is sent by the second terminal to the first terminal through D2D communication, and the second terminal has assigned a new IP address, that is, the second IP address, to the second terminal. Therefore, the second terminal The second IP address is directly used as the source IP address when transmitting the uplink data.
  • S12 The first terminal replaces the source IP address of the uplink data with the first IP address.
  • the gateway Since the second IP address is only used for data transmission between the first terminal and the second terminal, when the first terminal needs to send the uplink data of the second terminal to the network, the gateway needs to be allocated for the second terminal.
  • the first IP address can be recognized by the gateway.
  • the first terminal sends the uplink data after the source IP address replacement to the first eNB by using the first radio bearer mapped to the second IP address.
  • the method may further include the following steps for the downlink data:
  • the first terminal receives the downlink data of the second terminal using the first IP address as the destination IP address by using the first radio bearer mapped to the second IP address.
  • the downlink data is sent by the first eNB to the second terminal by using the first radio bearer.
  • the second terminal can only be determined by the first IP address allocated by the gateway for the second terminal.
  • S15 The first terminal replaces the destination IP address of the downlink data with the second IP address.
  • the second IP address is used only when the data is transmitted between the first terminal and the second terminal.
  • the destination in the downlink data needs to be used.
  • the IP address is replaced with the second IP address, so that the second terminal can be accurately found according to the second IP address.
  • S16 The first terminal sends the downlink data after the destination IP address is replaced to the second terminal.
  • the context information of the second terminal may further include: an original access cell ID of the second terminal.
  • the method may further include the following steps:
  • the first terminal receives the original access cell ID of the second terminal in the context information.
  • the first terminal sends the original access cell ID of the second terminal to the first eNB.
  • the first eNB can be made aware of the original access cell ID of the second terminal.
  • connection control method provided by the embodiment of the present invention is described below by taking the first eNB as an example.
  • the first terminal 1 is located in the coverage of the first eNB 3.
  • the second terminal 2 is removed from the coverage of the first eNB 3.
  • the first terminal may be referred to as a Relay UE, and the second terminal may be referred to as a Remote UE.
  • the second terminal when the second terminal 2 is within the coverage of the first eNB 3, referring to FIG. 4, the second terminal is represented by UE a, and the first terminal is represented by a Relay UE. It can be seen that UE a and the first eNB are visible.
  • connection control method includes the following steps:
  • the first base station eNB receives the radio bearer modification request message sent by the first terminal.
  • the radio bearer modification request message carries the context information of the second terminal, and the context information includes at least the ID of the second terminal.
  • the first eNB configures the first radio bearer between the first eNB and the first terminal according to the radio bearer modification request message.
  • the first radio bearer is used to transmit service data of the second terminal.
  • the specific configuration of the first radio bearer is well known to those skilled in the art, and details are not described herein again.
  • the first eNB searches for the first S1 bearer corresponding to the ID of the second terminal in the S1 bearer existing in the first eNB.
  • the first eNB may access the network, so A first EPS bearer configured to be accessed by the second terminal to the network may be present in the first eNB, and may also be referred to herein as a historical EPS bearer of the second terminal in the first eNB.
  • the EPS bearer includes a radio bearer, an S1 bearer, and an S5/S8 bearer.
  • the identifier of the EPS bearer is stored on the terminal device, the eNB, the MME, the S-GW, the P-GW, and the like. Therefore, one radio bearer or the S1 bearer or the S5/S8 bearer can be uniquely determined according to the EPS bearer identifier.
  • the step S203 may include the following steps: the first eNB extracts the ID of the second terminal from the context information, and searches for the ID of the second terminal corresponding to all the S1 bearers existing on the first eNB.
  • the first eNB establishes a mapping relationship between the first radio bearer and the first S1 bearer.
  • the mapping relationship may be the first radio bearer ID and the first S1 bearer ID.
  • the first eNB may be configured to map the uplink data transmitted by the second terminal by using the first radio bearer to the first S1 bearer, and then send the uplink data to the network by using the first S1 bearer and the S5/S8 bearer.
  • the first eNB may be configured to map the downlink data that belongs to the second terminal received on the first S1 bearer to the first radio bearer, and then finally send the first radio bearer to the second terminal by using the first radio bearer. In turn, data transmission between the second terminal and the network is implemented.
  • the first eNB sends a bearer configuration completion message to the first terminal after establishing the mapping relationship.
  • the bearer configuration completion message carries the ID of the first radio bearer, and the bearer configuration completion message may notify the first terminal that the first radio bearer has been configured.
  • the D2D communication between the second terminal 2 and the first terminal 1 is 004, and between the first terminal 1 and the first eNB 3 is a first radio bearer 003 for transmitting service data of the second terminal 2.
  • a first radio bearer 003 for transmitting service data of the second terminal 2.
  • the second terminal 2 can perform data transmission with the gateway through the first radio bearer 003, the first S1 bearer 002.
  • the first eNB may configure a first radio bearer between the first eNB and the first terminal in the coverage of the first eNB, and
  • the downlink data sent by the network to the second terminal is sent to the second terminal by using the first radio bearer and the first terminal, and the uplink data sent by the second terminal by the first terminal is received by the first radio bearer, and the uplink data is received.
  • a device such as a gateway to implement data transmission between the second terminal and the network.
  • the second terminal since the second terminal is removed from the coverage of the first eNB, and the first S1 bearer of the second terminal is reserved between the first eNB and the gateway, the second terminal can still access
  • the first eNB that is originally accessed can shorten the delay of the connection establishment, user authentication, and the like, and improve the speed at which the second terminal accesses the network.
  • the first terminal that is the Relay UE can simultaneously perform D2D communication with one or more second terminals that are remote UEs, which means that the first terminal may need to be multiple second terminals at the same time.
  • a radio bearer may be separately configured for each second terminal, and used for data transmission for each second terminal. Therefore, in the foregoing step S202, when the first eNB configures the first radio bearer for the second terminal, the following manner may be adopted:
  • the first eNB establishes a new first radio bearer between the first eNB and the first terminal.
  • a first radio bearer is created for each second terminal between the first eNB and the first terminal, so that the newly established first radio bearer belongs to a second terminal,
  • a schematic diagram of data transmission is shown in FIG. 6 (only one second terminal UE a is shown in FIG. 6 , and the data transmission of other second terminals is similar to UE a).
  • At least two second terminals may also share one radio bearer. Therefore, in the foregoing step S202, when the first eNB configures the first radio bearer for the second terminal, the following manner may be adopted:
  • the first eNB configures an existing radio bearer between the first eNB and the first terminal as the first radio bearer.
  • the existing radio bearer is used for transmitting the service data of the other second terminal.
  • the existing radio bearer can be configured to the subsequent second terminal, as shown in FIG. 8.
  • the first radio bearer 003 can be configured by multiple second terminals.
  • other second terminals may be represented by UE b.
  • the first S1 bearer corresponding to each second terminal is distinguished by a letter, that is, UE a corresponds to the first S1 bearer a.
  • UE b corresponds to the first S1 bearer b.
  • the existing radio bearer when used as the first radio bearer, it may also be a first radio bearer that shares the same quality of service requirement, that is, a plurality of existing radio bearers having different quality of service requirements are established in advance, and When the second terminal is configured, the existing radio bearers having the same quality of service requirement may be selected as the first radio bearer, that is, different second terminals may share the first radio bearer with the same quality of service requirement. Therefore, in the foregoing step S202, when the first eNB configures the first radio bearer for the second terminal, the following manner may be adopted:
  • the wireless bearer having the same quality of service requirement between the first eNB and the first terminal is used as the first radio bearer, and if there is no wireless service quality required by the second terminal between the first eNB and the first terminal If the bearer is used, a radio bearer that satisfies the quality of service required by the second terminal is newly established and configured to the second terminal.
  • the method may include the following steps for uplink data:
  • the first eNB receives the downlink data of the second terminal by using the first S1 bearer.
  • the first eNB sends the downlink data to the first terminal by using the first radio bearer mapped to the first S1 bearer.
  • the method can include the following steps:
  • the first eNB receives the uplink data of the first terminal by using the first radio bearer.
  • the first eNB uploads uplink data by using the first S1 bearer mapped to the first radio bearer.
  • the scenario in which the first terminal is located in the coverage of the first eNB and the second terminal is removed from the coverage of the first eNB is described.
  • the first terminal is located in the coverage of the first eNB
  • the second terminal is also located in the coverage of the first eNB
  • the second terminal is connected through the second radio bearer. Enter the first eNB.
  • the method may further include the following steps:
  • the second radio bearer is reserved.
  • the second terminal can directly use the second radio bearer to perform data transmission with the first eNB, and on the other hand, between the first terminal and the first terminal. Performing D2D communication, and then performing data transmission with the first eNB by using the first radio bearer between the first terminals.
  • UE a can have both the second radio bearer and the first radio bearer, and can simultaneously access the first eNB by using the second radio bearer and the first radio bearer.
  • the method may further include the following steps:
  • the first eNB receives the downlink data of the second terminal by using the first S1 bearer.
  • the first eNB sends the downlink data to the second terminal by using the second radio bearer mapped to the first S1 bearer.
  • the downlink data of the second terminal may be sent by using the second radio bearer or the first radio bearer, and the downlink of the second terminal may be sent by using the second radio bearer and the first radio bearer.
  • the data for example, divides a certain downlink data of the second terminal into at least two parts, some of which are sent to the second terminal by using the second radio bearer, and the other part is sent to the second terminal by using the first radio bearer.
  • the method may further include the following steps:
  • the first eNB receives the uplink data of the second terminal by using the second radio bearer.
  • uplink data of the second terminal may be separately received by the second radio bearer or the first radio bearer, and the second terminal may be separately received by the second radio bearer and the first radio bearer.
  • Uplink data for example, divides a certain uplink data of the second terminal into at least two parts, some of which are sent by the second radio bearer, and another part is sent by the first terminal and the first radio bearer.
  • the first terminal 1 is located in the coverage of the first eNB 3
  • the second terminal 2 is originally located in the coverage of the source eNB 5, and then the second terminal 2 is removed from the coverage of the source eNB 5 and is outside the coverage of the first eNB 3, and the second terminal 2 and the first terminal 1 can perform D2D communication.
  • the second terminal 2 has an S1 bearer in the source eNB 5, and there is no S1 bearer in the first eNB. Therefore, the access base station of the second terminal 2 needs to be first switched from the source eNB 5 to the first eNB 3, and then the second terminal 2 can be accessed through the first terminal 1, and the first eNB3 is connected to the network. .
  • the original access cell ID of the second terminal 2 that is, the ID of the source eNB 5
  • the method further The steps can be included:
  • the handover request message is sent to the source eNB 5 corresponding to the original access cell ID, and when the handover confirmation message sent by the source eNB 5 is received, the above step S202 is performed.
  • the source eNB 5 may perform base station handover on the second terminal 2, switch the second terminal to the first eNB 3, and send a handover confirmation message to the first eNB after the handover is completed.
  • the handover process of the base station is a technology well known to those skilled in the art, and details are not described herein again.
  • the second terminal may move to the coverage of the first eNB at any time.
  • the first eNB requests the MME to establish a new S1, and then establishes a new one for the second terminal.
  • the radio bearer can achieve the purpose of the second terminal communicating with the network through the first terminal and the first eNB.
  • the second terminal may return to the coverage of the source eNB at any time, so the context information of the second terminal may be retained in the source eNB, and a timer is started. When the timer expires, the context information of the second terminal reserved in the source eNB is released, so that the second terminal can quickly access the source eNB when it moves within the coverage of the source eNB.
  • the method may further include the following steps. :
  • the first eNB After the first radio bearer is configured between the first eNB and the first terminal, the first eNB sends a bearer release request to the source eNB, so that the source eNB releases the context information of the second terminal.
  • the utilization of the source eNB can be improved.
  • the MME is taken as an example to describe the connection control method provided by the embodiment of the present invention.
  • the second terminal may generate a link configuration request message, and send a link configuration request message to the first terminal, and generate a bearer configuration request message by the first terminal, and send the message to the first terminal, as shown in FIG. 2, FIG.
  • the MME is configured to enable the MME to directly establish a new EPS bearer for the second terminal, that is, a new radio bearer from the S-GW to the first terminal and an S1 bearer.
  • connection control method includes the following steps:
  • Step S301 The MME receives the request bearer resource modification message sent by the first terminal.
  • the bearer update request carries the context information of the second terminal, and the context information includes at least the second The identity of the terminal.
  • Step S302 The MME configures a second S1 bearer between the first eNB and the serving gateway S-GW according to the request bearer resource modification message.
  • the second S1 carries the service data for transmitting the second terminal, and the identifier of the second S1 bearer may correspond to the ID of the second terminal.
  • Step S303 The MME sends a bearer resource command message to the first eNB according to the request bearer resource modification message.
  • the first eNB can be configured to configure the first radio bearer for the second terminal between the first eNB and the first terminal.
  • the second S1 bearer is 006, and the first radio bearer is 003.
  • the UE a can use the first radio bearer and the second S1 bearer, and the relay UE and the first eNB are used.
  • the network performs data transmission.
  • the Relay UE establishes a new independent bearer between the first terminal and the gateway, and performs processing of the data mapping process by the P-GW, that is, in the first embodiment.
  • the mapping occurs in the P-GW and the Relay UE, and in the embodiment of FIG. 5, the data mapping process occurs in the first eNB and the Relay UE.
  • step S302 may include the following steps:
  • the MME allocates the identifier of the second S1 bearer to the second terminal.
  • the bearer resource command carries the identifier of the second EPS bearer allocated for the second terminal; the identifier of the second EPS bearer may be used to identify the second S1 bearer;
  • the MME sends a bearer resource command message to the S-GW, where the bearer resource command message carries the identifier ID of the second S1 bearer.
  • S3023 The MME receives a create bearer request message sent by the S-GW.
  • S3024 The MME sends a bearer setup E-RAB modification request message to the first eNB according to the create bearer request message.
  • the MME receives an E-RAB modify bearer setup response message sent by the first eNB according to an E-RAB (Evolved Radio Access Bearer) modification request message.
  • E-RAB Evolved Radio Access Bearer
  • the MME sends a create bearer response message to the S-GW according to the E-RAB modify bearer setup response message, to establish a second S1 bearer between the S-GW and the first eNB.
  • the second S1 bearer in the EPS bearer can be established between the S-GW and the first eNB.
  • the establishment process of the S1 bearer in the foregoing EPS bearer is common knowledge of the person in the field, and details are not described herein again.
  • FIG. 14 is a signaling flowchart provided by an embodiment of the present invention.
  • the first terminal is a Relay UE
  • the second terminal is a UE a.
  • the Relay UE is located in the coverage of the first eNB, and the UE a is within the coverage of the first eNB.
  • the radio bearer 000 is disposed between the relay UE and the first eNB.
  • the second radio bearer 001 is disposed between the UE a and the first eNB, and the first eNB and the S are configured.
  • a first S1 bearer 002 for transmitting data of the UE a is disposed between the GWs.
  • the UE 2 and the Relay UE can perform D2D communication.
  • the method may include the following steps:
  • S1-1 UE a sends a link configuration request message to the Relay UE.
  • the Relay UE sends a radio bearer modification request message to the first eNB.
  • the radio bearer modification request message is sent to the first eNB, so that the first eNB configures the first radio bearer between the first eNB and the relay UE for the UE a.
  • the bearer update request carries the identifier of the UE a.
  • the first eNB establishes an RRC connection with the Relay UE according to the radio bearer modification request message.
  • the created RRC connection may be configured for the UE a to configure the first radio bearer between the first eNB and the Relay UE. As shown in FIG. 14 , the first radio bearer is 003.
  • the first eNB searches for the first S1 bearer corresponding to the UE a identifier, and establishes a mapping relationship between the first S1 bearer and the first radio bearer.
  • the first S1 bearer corresponding to the UE a historical access network exists in the first eNB Since the UE a is removed from the coverage of the first eNB, the first S1 bearer corresponding to the UE a historical access network exists in the first eNB, and the first eNB can find the first eNB by using the identifier of the UE a. An S1 bearer.
  • the Relay UE establishes a mapping relationship between the first radio bearer and the UE a.
  • the Relay UE generates a link configuration complete message and sends it to the UE a.
  • the UE a can use the first radio bearer 003 and the first S1 bearer 002 to perform data through the Relay UE, the first eNB, and the network.
  • the transmission enables UE a to access the network through the Relay UE.
  • FIG. 15 is a signaling flowchart of another embodiment of the present invention.
  • the first terminal in the figure is a Relay UE
  • the second terminal is a UE a.
  • the Relay UE is located in the coverage of the first eNB
  • the UE a is in the coverage of the first eNB.
  • the radio bearer 000 is configured to transmit the relay service data between the relay UE and the first eNB.
  • the second radio bearer 001 is disposed between the relay UE and the first eNB.
  • a first S1 bearer 002 for transmitting data of the UE a is disposed between the first eNB and the S-GW, and when the UE a moves out of the coverage of the first eNB, the relay UE and the UE a can perform D2D communication, where
  • the method can include the following steps:
  • S2-1 UE a sends a link configuration request message to the Relay UE.
  • S2-2 The Relay UE sends a request bearer resource modification message to the MME.
  • the request bearer resource modification message is sent to the MME, so that when the MME receives the request bearer resource modification message, the service bearer may be configured for the UE a on the Relay UE.
  • the MME allocates an identifier of the second S1 bearer to the second terminal.
  • the MME sends a bearer resource command message to the S-GW.
  • the bearer resource command message carries the ID of the second S1 bearer.
  • the S-GW/P-GW sends a create bearer request message to the MME.
  • the MME sends an E-RAB modification request message to the first eNB.
  • the first eNB establishes an RRC connection with the Relay UE.
  • the RRC connection after the establishment may be configured to configure the first radio bearer between the first eNB and the relay UE, as shown in FIG.
  • S2-8 The first eNB sends an E-RAB modification response message to the MME.
  • S2-9 The MME sends a create bearer response message to the S-GW.
  • the S-GW receives the Create Bearer Response, and can establish a second for the UE a between the first eNB and the S-GW.
  • the S1 bearer as shown in FIG. 15, the second S1 bearer is 006.
  • the first eNB establishes a mapping relationship between the second S1 bearer and the first radio bearer.
  • the Relay UE establishes a mapping relationship between the first radio bearer and the UE a.
  • the Relay UE generates a link configuration complete message and sends it to the UE a.
  • the UE a can use the first radio bearer 003 and the second S1 bearer 006 to perform the relay UE, the first eNB, and the network. Data transmission enables UE a to access the network through the Relay UE.
  • FIG. 16 is a signaling flowchart provided by another embodiment of the present invention.
  • the first terminal is a Relay UE
  • the second terminal is a UE a.
  • the Relay UE is located in the coverage of the first eNB
  • the UE a is located in the coverage of the source eNB.
  • a radio bearer 010 is disposed between the UE a and the source eNB
  • a radio bearer 012 is disposed between the Relay UE and the first eNB
  • the first eNB and the S-GW are configured for transmission.
  • the S1 bearer 013 of the first terminal service data, and the D2D communication between the UE a and the Relay UE, the method may include the following steps:
  • S3-1 UE a sends a link configuration request message to the Relay UE.
  • the Relay UE sends a radio bearer modification request message to the first eNB.
  • the radio bearer modification request message is sent to the first eNB, so that the first eNB configures the first radio bearer between the first eNB and the relay UE for the UE a.
  • the identifier of the UE a is carried in the radio bearer modification request message.
  • the radio bearer modification request message also carries the original access cell ID of the UE a, that is, the ID of the cell of the source eNB.
  • S3-3 The first eNB sends a handover request message to the source eNB.
  • the access base station of UE a can be handed over from the source eNB to the first eNB by transmitting a handover request.
  • S3-4 The source eNB sends a handover request acknowledgement message to the first eNB.
  • S3-5 The first eNB sends an EPS bearer configuration request message to the MME.
  • the first eNB After the first eNB receives the handover request acknowledgement message, it indicates that the service bearer of the access network can be established for the UE a, but since the UE a has not accessed the first eNB before, there is no S1 bearer of the UE a on the first eNB. . Therefore, the first eNB needs to send an EPS bearer configuration request message to the MME to enable the MME.
  • a new S1 bearer is configured for UE a between the first eNB and the S-GW.
  • the MME allocates the identifier of the second S1 bearer to the second terminal, and the identifier of the second S1 bearer may be represented by the identifier of the EPS allocated by the MME for the second terminal.
  • S3-7 The MME sends a bearer resource command message to the S-GW.
  • the bearer resource command message carries the ID of the second S1 bearer.
  • S3-8 The S-GW/P-GW sends a create bearer request message to the MME.
  • the MME sends an E-RAB modification request message to the first eNB.
  • the first eNB establishes an RRC connection with the Relay UE.
  • the created RRC connection may be the first radio bearer configured by the UE a between the first eNB and the Relay UE, and the first radio bearer is 003 as shown in FIG.
  • the first eNB sends an E-RAB modification response message to the MME.
  • S3-12 The MME sends a create bearer response message to the S-GW.
  • the S-GW receives the Create Bearer Response message, and the second S1 bearer is established for the UE a between the first eNB and the S-GW/P-GW. As shown in FIG. 16, the second S1 bearer is 005.
  • the first eNB establishes a mapping relationship between the second S1 bearer and the first radio bearer.
  • the Relay UE establishes a mapping relationship between the first radio bearer and the UE a.
  • the Relay UE generates a link configuration complete message and sends it to the UE a.
  • the UE a can send a link configuration request message to the Relay UE, so that the Relay UE can be the first eNB.
  • the first eNB may perform base station handover with the source eNB, and initiate an EPS bearer configuration request to the MME, so that the first eNB and the S-GW/P- A second S1 bearer is established between the GWs for the UE a, and the first eNB also establishes a first radio bearer for the UE a between the first eNB and the Relay UE, so that after the UE a receives the link configuration complete message, the UE a can use the first radio bearer 003 and the second S1 bearer 005 to perform data transmission through the Relay UE and the first eNB and the network, so that the UE a can access the network through the Relay UE.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a A computer device (which may be a personal computer, server, or network device, etc.) performs all or part of the steps of the various embodiments of the present invention.
  • the foregoing storage medium includes various types of media that can store program codes, such as a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.
  • the present invention further provides a connection control apparatus, which is applied to an eNB.
  • the connection control apparatus may include: a receiving unit 171, a sending unit. 172 and processing unit 173, wherein
  • the receiving unit 171 is configured to receive a link configuration request message sent by the second terminal, where the link configuration request message carries the context information of the second terminal, where the context information includes at least the identifier ID of the second terminal.
  • the sending unit 172 is configured to send, according to the link configuration request message, a bearer configuration request message to the network side device, where the bearer configuration request message includes: a radio bearer modification request message or a request bearer resource modification message, where the bearer configuration request message carries context information,
  • the bearer configuration request message is used to request the network side device to configure the service bearer, and the service bearer is used to transmit the service data of the second terminal;
  • the receiving unit 171 is further configured to receive a bearer configuration completion message sent by the network side device according to the bearer configuration request message, where the bearer configuration completion message carries the service bearer ID;
  • the processing unit 173 is configured to establish a mapping relationship between the service bearer and the second terminal.
  • the sending unit 172 is further configured to send a link configuration complete message to the second terminal after the mapping relationship is established, so that the second terminal uses the service bearer to perform data transmission by using the first terminal and the network side device.
  • the sending unit 172 shown in FIG. 17 sends a bearer configuration request message to the network side device according to the link configuration request message, including:
  • the transmitting unit 172 shown in FIG. 17 requests cancellation according to the link configuration.
  • Sending a bearer configuration request message to the network side device including:
  • the processing unit 173 shown in FIG. 17 establishes a mapping relationship between the service bearer and the second terminal, including:
  • the context information further includes a data gateway a first IP address assigned by the P-GW to the second terminal; or, a second IP address is allocated to the second terminal; and establishing a mapping relationship between the ID of the first radio bearer and the second IP address And establishing a mapping relationship between the first IP address and the second IP address, where the context information further includes a first IP address allocated by the data gateway P-GW to the second terminal.
  • the receiving unit 171 is further configured to receive uplink data sent by the second terminal by using the second IP address as the source IP address, where the source IP address of the uplink data is the second IP address.
  • the processing unit 172 is further configured to replace the source IP address of the uplink data with the first IP address, and the sending unit 173 is further configured to replace the source IP address by using the first radio bearer mapped to the second IP address.
  • the uplink data is sent to the first eNB;
  • the receiving unit 171 is further configured to receive, by using the first radio bearer mapped to the second IP address, downlink data of the second terminal that uses the first IP address as the destination IP address, and downlink data.
  • the destination IP address is the first IP address;
  • the processing unit 173 is further configured to replace the destination IP address of the downlink data with the second IP address;
  • the sending unit 172 is further configured to send the downlink data after the destination IP address replacement to the second terminal.
  • the context information of the second terminal further includes: an original access cell ID of the second terminal, and the receiving unit 171 is further configured to receive the foregoing in the context information.
  • the original access cell ID of the second terminal; the sending unit 172 is further configured to send the original access cell ID of the second terminal to the first eNB.
  • the first eNB may know the original access cell ID of the second terminal.
  • the present invention further provides a connection control apparatus, which is applied to a terminal.
  • the connection control apparatus may include: a receiving unit 181, a sending unit. 182 and processing unit 183, wherein
  • the receiving unit 181 is configured to receive a radio bearer modification request message sent by the first terminal, where the radio bearer modification request message carries the context information of the second terminal, where the context information includes at least the identifier of the second terminal.
  • the processing unit 183 is configured to configure, according to the radio bearer modification request message, a first radio bearer between the first eNB and the first terminal, where the first radio bearer is used to transmit service data of the second terminal;
  • the processing unit 183 is further configured to: in the S1 bearer that exists in the first eNB and located between the first eNB and the serving gateway S-GW, search for the first S1 bearer corresponding to the identifier ID of the second terminal;
  • the processing unit 183 is further configured to establish a mapping relationship between the first radio bearer and the first S1 bearer.
  • the sending unit 182 is configured to send a bearer configuration completion message to the first terminal after the mapping relationship is established, where the bearer configuration completion message carries the ID of the first radio bearer.
  • the processing unit 183 shown in FIG. 18 configures the first radio bearer between the first eNB and the first terminal, including:
  • an existing radio bearer between the first eNB and the first terminal as the first radio bearer; the existing radio bearer is used to transmit service data of the other second terminal; or, in the first eNB and the first terminal Establish a first radio bearer.
  • the context information further includes: an original access cell ID of the second terminal.
  • the processing unit 183 shown in FIG. 18 is further configured to: when the ID of the first eNB is the same as the original access cell ID, configure the first wireless between the first eNB and the first terminal according to the radio bearer modification request message. Bearer
  • the sending unit 182 shown in FIG. 18 is further configured to send, when the ID of the first eNB is different from the original access cell ID, to the source eNB corresponding to the original access cell ID.
  • a handover request message the receiving unit 181 is further configured to receive a handover confirmation message sent by the source eNB
  • the processing unit 183 is further configured to: when receiving the handover confirmation message sent by the source eNB, the first eNB, according to the radio bearer modification request message, A first radio bearer is configured between an eNB and the first terminal.
  • the receiving unit 181 shown in FIG. 18 is further configured to receive downlink data of the second terminal by using the first S1 bearer, and the sending unit 182 is further configured to pass the first S1 carries the first radio bearer mapped by the phase, and sends the downlink data to the first terminal, so that the first terminal will be down. Forwarding data to the second terminal;
  • the receiving unit 181 shown in FIG. 18 is further configured to receive uplink data of the second terminal by using the first radio bearer, and the sending unit 182 is further configured to The first S1 bearer carrying the phase mapping uploads uplink data.
  • the present invention further provides a connection control apparatus, which is applied to an MME.
  • the connection control apparatus may include: a receiving unit 191, a sending unit. 192 and processing unit 193, wherein
  • the receiving unit 191 is configured to receive a request bearer resource modification message sent by the first terminal, where the request bearer resource modification message carries the context information of the second terminal, where the context information includes at least the identifier ID of the second terminal;
  • the processing unit 192 is configured to configure a second S1 bearer between the first eNB and the serving gateway S-GW according to the request to carry the resource modification message, where the second S1 carries the service data for transmitting the second terminal.
  • the sending unit 193 is configured to send a radio resource control RRC reconfiguration message to the first eNB according to the request bearer resource modification message, so that the first eNB configures the first radio bearer between the first eNB and the first terminal, and the first radio bearer Used to transmit service data of the second terminal.
  • the processing unit 193 is further configured to allocate, by the second terminal, an identifier of the second S1 bearer.
  • the sending unit 192 is further configured to send a bearer resource command message to the S-GW, where the bearer resource command message carries the identifier of the second S1 bearer;
  • the receiving unit 191 is further configured to receive a create bearer request message sent by the S-GW.
  • the sending unit 192 is further configured to send a bearer setup request message to the first eNB according to the create bearer request message.
  • the receiving unit 191 is further configured to receive a bearer setup response message sent by the first eNB according to the bearer setup request message.
  • the sending unit 192 is further configured to send a create bearer response message to the S-GW according to the bearer setup response message, to establish a second S1 bearer between the S-GW and the first eNB.
  • the embodiment of the present invention further provides a terminal.
  • the terminal 200 may include: at least one processor 201, at least one communication bus 202, at least one communication interface 203, and at least one memory 204, where
  • Communication bus 202 is used to implement connection communication between these components; memory 204 can include read only memory and random access memory, and provides instructions and data to processor 201. A portion of memory 204 may also include non-volatile random access memory (NVRAM).
  • NVRAM non-volatile random access memory
  • the memory 204 stores the following elements, executable modules or data structures, or a subset thereof, or their extended set; in this embodiment, the memory 204 includes an operating system module 2041 and an application module 2042. .
  • the operating system module 2041 includes various system programs for implementing various basic services and processing hardware-based tasks;
  • the application module 2042 includes various applications, such as a desktop, a media player, a browser, etc., for implementing various application services.
  • the processor 601 by calling a program or instruction stored in the memory 604, the processor 601 is configured to:
  • the link configuration request message carries the context information of the second terminal, where the context information includes at least the identifier ID of the second terminal;
  • the link configuration request message And sending, by the link configuration request message, a bearer configuration request message to the network side device, where the bearer configuration request message includes at least: a radio bearer modification request message or a request bearer resource modification message, where the bearer configuration request message carries context information, and the bearer configuration request message is used.
  • the bearer configuration request message includes at least: a radio bearer modification request message or a request bearer resource modification message, where the bearer configuration request message carries context information, and the bearer configuration request message is used.
  • the link configuration completion message is sent to the second terminal, so that the second terminal uses the service bearer to perform data transmission between the first terminal and the network side device.
  • the processor sends a bearer configuration request message to the network side device according to the link configuration request message, specifically, to:
  • the processor sends a bearer configuration request message to the network side device according to the link configuration request message, specifically, to:
  • the first radio bearer is configured with the first terminal, and the second S1 bearer and the first radio bearer are used to transmit the service data of the second terminal.
  • the processor establishes a mapping relationship between the service bearer and the second terminal, specifically:
  • the second terminal allocates a second IP address, and establishes a mapping relationship between the first IP address and the second IP address, and establishes a mapping relationship between the ID of the first radio bearer and the second IP address.
  • the context information further includes a first IP address allocated by the P-GW to the second terminal.
  • the processor is further configured to:
  • the radio bearer sends the uplink data after the IP address replacement to the first eNB;
  • the downlink direction on the first radio bearer mapped to the second IP address, receiving downlink data of the second terminal using the first IP address as the destination IP address, and the destination IP address of the downlink data is the first IP address.
  • the destination IP address of the downlink data is replaced with the second IP address; and the downlink data after the IP address is replaced is sent to the second terminal.
  • the embodiment of the present invention further provides a base station.
  • the base station 210 includes: at least one processor 211, at least one bus 212, at least one communication interface 213, and at least one memory 214, where
  • the memory 211 is configured to store a computer execution instruction
  • the processor 211 is connected to the communication interface 213 and the memory 214 via a bus 212;
  • the processor 211 executes computer execution instructions stored in the memory 214, and the processor 211 is configured to:
  • Radio bearer modification request message carries the context information of the second terminal, where the context information includes at least the identifier ID of the second terminal;
  • the bearer configuration completion message is sent to the first terminal, where the bearer configuration completion message carries the ID of the first radio bearer.
  • the processor configures the first radio bearer between the first eNB and the first terminal, specifically, to:
  • the processor is further specifically configured to:
  • the first radio bearer is configured between the first eNB and the first terminal according to the radio bearer modification request message; or, when the ID of the first eNB is connected with the original
  • the handover request message is sent to the source eNB corresponding to the original access cell ID; when receiving the handover confirmation message sent by the source eNB, the first eNB is in the first eNB and the first terminal according to the radio bearer modification request message.
  • the first radio bearer is configured between.
  • the processor is further specifically configured to:
  • the uplink data of the first terminal is received by the first radio bearer, and the uplink data is uploaded by the first S1 bearer mapped to the first radio bearer.
  • the processor is further specifically configured to:
  • the downlink data of the second terminal is received by the first S1 bearer, and the downlink data is sent to the second terminal by using the second radio bearer mapped to the first S1 bearer;
  • the uplink data of the second terminal is received on the second radio bearer; and the uplink data is uploaded by the first S1 bearer mapped to the second radio bearer.
  • An embodiment of the present invention further provides an MME.
  • the MME 220 includes: at least one processor 221, at least one bus 222, at least one communication interface 223, and at least one memory 224, where
  • the memory 221 is configured to store a computer execution instruction
  • the processor 221 is connected to the communication interface 223 and the memory 224 via a bus 222;
  • the processor 221 executes computer execution instructions stored in the memory 224, and the processor 221 is configured to:
  • the request bearer resource modification message carries the context information of the second terminal, where the context information includes at least the identifier ID of the second terminal;
  • the processor is further configured to

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Abstract

本发明是关于一种连接控制装置及方法,所述方法包括:接收第二终端发送的链路配置请求消息;根据所述链路配置请求消息向网络侧设备发送承载配置请求消息;接收所述网络侧设备根据所述承载配置请求消息发送的承载配置完成消息;建立所述业务承载与所述第二终端之间的映射关系;在建立所述映射关系后向所述第二终端发送链路配置完成消息,以使所述第二终端利用所述业务承载,通过所述第一终端与网络侧设备进行数据传输。该方法可以实现在第二终端与第一终端之间进行D2D通信时,第二终端还可以借助第一终端接入到网络中,进行数据传输,这样在第二终端无法直接接入到基站时,可以通过第一终端提高第二终端的网络服务质量。

Description

连接控制装置及方法 技术领域
本发明涉及通信技术领域,尤其涉及一种连接控制装置及方法。
背景技术
通信网络在部署时,不能完全保证网络的全面无缝覆盖,特别是在自然灾害(例如,地震、海啸等)发生的时候,基站往往可能被损害,进而导致基站覆盖范围内的终端与基站之间的通信中断。
近年来发展出一种D2D(Device-to-Device,设备到设备)的通信方式。这种D2D通信方式是用户设备直接与用户设备进行通信,两者之间不需要通过基站以及网络进行数据传输,能够在一定程度上克服网络信号覆盖薄弱和应对紧急突发公共安全(Public Safety)事故时等现有通信网络的弱点。
D2D通信方式的一种部署场景如图1所示,位于STA(Station,基站)的覆盖范围(图中所示椭圆形区域)外的UE a可以与STA覆盖范围内的UE x之间进行D2D通信,实现UE a在无法与STA通信时,可以与UE x之间进行通信的目的。
上述D2D通信方式,虽然可以实现UE a在无法与STA通信时,可以与位于STA覆盖范围内的UE x进行通信的目的,但UE a无法通过STA接入到网络中。例如:在传统的小区通信场景中,当UE a位于STA覆盖范围内时,UE a可以与STA之间建立通信连接,并且通过STA与网络进行数据传输。由于终端通常具有移动能力,所以当UE a从STA覆盖范围内移出时,虽然UE a可以与UE x之间进行D2D通信,但此时UE a无法通过UE x接入到网络中,使UE a与网络之间的数据传输中断,影响UE a的网络服务质量。
发明内容
本发明提供了一种连接控制装置及方法,以解决终端与STA覆盖范围内的终端之间进行D2D通信连接时无法通过STA接入到网络中的问题。
为了解决上述技术问题,本发明实施例公开了如下技术方案:
第一方面,提供一种装置,包括:接收单元、发送单元和处理单元,其中,
所述接收单元,用于接收第二终端发送的链路配置请求消息,所述链路配置请求 消息中携带有所述第二终端的上下文信息,所述上下文信息中至少包括所述第二终端的标识ID;
所述发送单元,用于根据所述链路配置请求消息向网络侧设备发送承载配置请求消息,所述承载配置请求消息包括:无线承载修改请求消息或请求承载资源修改消息,所述承载配置请求消息中携带有所述上下文信息,所述承载配置请求消息用于请求所述网络侧设备配置业务承载,所述业务承载用于传输所述第二终端的业务数据;
所述接收单元,还用于接收所述网络侧设备根据所述承载配置请求消息发送的承载配置完成消息,所述承载配置完成消息中携带有所述业务承载ID;
所述处理单元,用于建立所述业务承载与所述第二终端之间的映射关系;
所述发送单元,还用于在建立所述映射关系后向所述第二终端发送链路配置完成消息,以使所述第二终端利用所述业务承载,通过所述第一终端与所述网络侧设备进行数据传输。
结合第一方面,在第一方面的第一种可能的实现方式中,所述发送单元根据所述链路配置请求消息向网络侧设备发送承载配置请求消息,具体用于:
根据所述上下文信息,向所述第一终端所在的第一基站eNB发送无线承载修改请求消息,以使所述第一eNB在所述第一eNB和所述第一终端之间配置第一无线承载,所述第一无线承载用于传输所述第二终端的业务数据。
结合第一方面,在第一方面的第二种可能的实现方式中,所述发送单元根据所述链路配置请求消息向网络侧设备发送承载配置请求消息,具体用于:
根据所述上下文信息向移动管理实体MME发送请求承载资源修改消息,以使所述MME在所述第一eNB与服务网关S-GW之间配置第二S1承载,以及,以使所述MME控制所述第一eNB在所述第一eNB与所述第一终端之间配置第一无线承载,所述第二S1承载和所述第一无线承载用于传输所述第二终端的业务数据。
结合第一方面第一种或第二种可能的实现方式,在第一方面的第三种可能的实现方式中,所述处理单元建立所述业务承载与所述第二终端之间的映射关系,具体用于:
建立所述第一无线承载的ID与所述第二终端的ID的映射关系;
或者,建立所述第一无线承载的ID与第一IP地址的映射关系,所述上下文信息中还包括数据网关P-GW为所述第二终端分配的第一IP地址;
或者,为所述第二终端分配第二IP地址;并建立所述第一IP地址与所述第二IP地址的映射关系,以及,建立所述第一无线承载的ID与所述第二IP地址的映射关系,所述上下文信息中还包括数据网关P-GW为所述第二终端分配的第一IP地址。
结合第一方面,在第一方面第四种可能的实现方式中,所述上下文信息中还包括:所述第二终端的原接入小区ID,
所述接收单元,还用于接收所述上下文信息中的所述第二终端的原接入小区ID;
所述发送单元,还用于将所述第二终端的原接入小区ID发送给所述第一eNB。
第二方面,提供一种装置,包括:接收单元、发送单元和处理单元,其中,
所述接收单元,用于接收第一终端发送的无线承载修改请求消息,所述无线承载修改请求消息中携带有第二终端的上下文信息,所述上下文信息中至少包括所述第二终端的标识ID;
所述处理单元,用于根据所述无线承载修改请求消息,在所述第一eNB与所述第一终端之间配置第一无线承载,所述第一无线承载用于传输所述第二终端的业务数据;
所述处理单元,还用于在所述第一eNB中存在的S1承载中,查找与所述第二终端的ID相对应的第一S1承载;
所述处理单元,还用于建立所述第一无线承载与所述第一S1承载的映射关系;
所述发送单元,用于在建立所述映射关系后向所述第一终端发送承载配置完成消息,所述承载配置完成消息中携带有所述第一无线承载的ID。
结合第二方面,在第二方面第一种可能的实现方式中,所述处理单元在所述第一eNB与所述第一终端之间配置第一无线承载,具体用于:
将所述第一eNB与所述第一终端之间一个已有的无线承载配置为所述第一无线承载;所述已有的无线承载用于传输其它第二终端的业务数据;
或者,在所述第一eNB与所述第一终端之间建立第一无线承载。
结合第二方面或第二方面第一种可能的实现方式,在第二方面第二种可能的实现方式中,所述方法还包括:
所述接收单元,还用于接收所述第一终端发送的所述第二终端的原接入小区ID;
所述处理单元,还用于当所述第一eNB的ID与所述原接入小区ID相同时,根据所述无线承载修改请求消息,在所述第一eNB与所述第一终端之间配置第一无线承载;
所述发送单元还用于,当所述第一eNB的ID与所述原接入小区ID不相同时,向与所述原接入小区ID相对应的源eNB发送切换请求消息;
所述接收单元,还用于接收所述源eNB发送的切换确认消息;
所述处理单元,还用于当接收到所述切换确认消息时,根据所述无线承载修改请 求消息,在所述第一eNB与所述第一终端之间配置第一无线承载。
第三方面,提供一种装置,包括:接收单元、发送单元和处理单元,其中,
所述接收单元,用于接收第一终端发送的请求承载资源修改消息,所述请求承载资源修改消息中携带有所述第二终端的上下文信息,所述上下文信息中至少包括所述第二终端的标识ID;
所述处理单元,用于根据所述请求承载资源修改消息,在所述第一eNB与服务网关S-GW之间配置第二S1承载,所述第二S1承载用于传输所述第二终端的业务数据;
所述发送单元,用于根据所述请求承载资源修改消息向所述第一eNB发送承载资源命令消息,以使所述第一eNB在所述第一eNB与所述第一终端之间配置第一无线承载,所述第一无线承载用于传输所述第二终端的业务数据。
结合第三方面,在第三方面第一种可能的实现方式中,所述处理单元,还用于为所述第二终端分配所述第二S1承载的标识;
所述发送单元,还用于向所述S-GW发送承载资源命令消息,所述承载资源命令消息中携带有所述第二S1承载的标识;
所述接收单元,还用于接收所述S-GW发送的创建承载请求消息;
所述发送单元,还用于根据所述创建承载请求消息,向所述第一eNB发送E-RAB修改请求消息;
所述接收单元,还用于接收所述第一eNB根据所述E-RAB修改请求消息发送的E-RAB修改承载设置响应消息;
所述发送单元,还用于根据所述E-RAB修改承载设置响应消息,向所述S-GW发送创建承载响应消息,以在S-GW和所述第一eNB之间建立所述第二S1承载。
第四方面,提供一种连接控制方法,所述方法包括:
第一终端接收第二终端发送的链路配置请求消息,所述链路配置请求消息中携带有所述第二终端的上下文信息,所述上下文信息中至少包括所述第二终端的标识ID;
所述第一终端根据所述链路配置请求消息向网络侧设备发送承载配置请求消息,所述承载配置请求消息至少包括:无线承载修改请求消息或请求承载资源修改消息,所述承载配置请求消息中携带有所述上下文信息,所述承载配置请求消息用于请求所述网络侧设备配置业务承载,所述业务承载用于传输所述第二终端的业务数据;
所述第一终端接收所述网络侧设备根据所述承载配置请求消息发送的承载配置完成消息,所述承载配置完成消息中携带有所述业务承载ID;
所述第一终端建立所述业务承载与所述第二终端之间的映射关系;
所述第一终端在建立所述映射关系后向所述第二终端发送链路配置完成消息,以使所述第二终端利用所述业务承载,通过所述第一终端与所述网络侧设备进行数据传输。
结合第四方面,在第四方面第一种可能的实现方式中,所述第一终端根据所述链路配置请求消息向网络侧设备发送承载配置请求消息,包括:
所述第一终端根据所述上下文信息,向所述第一终端所在的第一基站eNB发送无线承载修改请求消息,以使所述第一eNB在所述第一eNB和所述第一终端之间配置第一无线承载,所述第一无线承载用于传输所述第二终端的业务数据。
结合第四方面,在第四方面第二种可能的实现方式中,所述第一终端根据所述链路配置请求消息向网络侧设备发送承载配置请求消息,包括:
所述第一终端根据所述上下文信息,向移动管理实体MME发送请求承载资源修改消息,以使所述MME在所述第一eNB与服务网关S-GW之间配置第二S1承载,以及,以使所述MME控制所述第一eNB在所述第一eNB与所述第一终端之间配置第一无线承载,所述第二S1承载和所述第一无线承载用于传输所述第二终端的业务数据。
结合第四方面第一种或第二种可能的实现方式,在第四方面第三种可能的实现方式中,所述第一终端建立所述业务承载与所述第二终端之间的映射关系,包括:
所述第一终端建立所述第一无线承载的ID与所述第二终端的ID的映射关系;
或者,所述第一终端建立所述第一无线承载的ID与第一IP地址的映射关系,所述上下文信息中还包括数据网关P-GW为所述第二终端分配的第一IP地址;
或者,所述第一终端为所述第二终端分配第二IP地址,并建立所述第一IP地址与所述第二IP地址的映射关系,以及,建立所述第一无线承载的ID与所述第二IP地址的映射关系,所述上下文信息中还包括P-GW为所述第二终端分配的第一IP地址
结合第四方面,在第四方面第四种可能的实现方式中,所述上下文信息中还包括:所述第二终端的原接入小区ID,所述方法还包括:
所述第一终端接收所述上下文信息中的所述第二终端的原接入小区ID;
所述第一终端将所述第二终端的原接入小区ID发送给所述第一eNB。
第五方面,提供一种连接控制方法,所述方法包括:
第一基站eNB接收第一终端发送的无线承载修改请求消息,所述无线承载修改请求消息中携带有第二终端的上下文信息,所述上下文信息中至少包括所述第二终端 的标识ID;
所述第一eNB根据所述无线承载修改请求消息,在所述第一eNB与所述第一终端之间配置第一无线承载,所述第一无线承载用于传输所述第二终端的业务数据;
所述第一eNB在所述第一eNB中存在的S1承载中,查找与所述第二终端的ID相对应的第一S1承载;
所述第一eNB建立所述第一无线承载与所述第一S1承载的映射关系;
所述第一eNB在建立所述映射关系后向所述第一终端发送承载配置完成消息,所述承载配置完成消息中携带有所述第一无线承载的ID。
结合第五方面,在第五方面第二种可能的实现方式中,所述第一eNB在所述第一eNB与所述第一终端之间配置第一无线承载,包括:
所述第一eNB将所述第一eNB与所述第一终端之间一个已有的无线承载配置为所述第一无线承载;所述已有的无线承载用于传输其它第二终端的业务数据;
或者,所述第一eNB在所述第一eNB与所述第一终端之间建立第一无线承载。
结合第五方面或第五方面第一种可能的实现方式,在第五方面第二种可能的实现方式中,所述方法还包括:
接收所述第一终端发送的所述第二终端的原接入小区ID;
当所述第一eNB的ID与所述原接入小区ID相同时,所述第一eNB根据所述无线承载修改请求消息,在所述第一eNB与所述第一终端之间配置第一无线承载;
或者,当所述第一eNB的ID与所述原接入小区ID不相同时,第一eNB向所述原接入小区ID对应的源eNB发送切换请求消息;当接收到所述源eNB发送的切换确认消息时,所述第一eNB根据所述无线承载修改请求消息,在所述第一eNB与所述第一终端之间配置第一无线承载。
第六方面,提供一种连接控制方法,其特征在于,所述方法包括:
移动管理实体MME接收第一终端发送的请求承载资源修改消息,所述请求承载资源修改消息中携带有所述第二终端的上下文信息,所述上下文信息中至少包括所述第二终端的标识ID;
所述MME根据所述请求承载资源修改消息,在所述第一eNB与服务网关S-GW之间配置第二S1承载,所述第二S1承载用于传输所述第二终端的业务数据;
所述MME根据所述请求承载资源修改消息向所述第一eNB发送承载资源命令消息,以使所述第一eNB在所述第一eNB与所述第一终端之间配置第一无线承载,所述第一无线承载用于传输所述第二终端的业务数据。
结合第六方面,在第六方面第一种可能的实现方式中,所述在所述第一eNB与S-GW之间配置第二S1承载,包括:
所述MME为所述第二终端分配所述第二S1承载的标识;
所述MME向所述S-GW发送承载资源命令消息,所述承载资源命令消息中携带有所述第二S1承载的标识;
所述MME接收所述S-GW发送的创建承载请求消息;
所述MME根据所述创建承载请求消息,向所述第一eNB发送演进的无线接入承载E-RAB修改请求消息;
所述MME接收所述第一eNB根据所述E-RAB修改请求消息发送的E-RAB修改承载设置响应消息;
所述MME根据所述E-RAB修改承载设置响应消息,向所述S-GW发送创建承载响应消息,以在S-GW和所述第一eNB之间建立所述第二S1承载。
本发明的提供的技术方案可以包括以下有益效果:
本发明提供的该方法,第一终端通过接收第二终端的链路配置请求,可以请求网络侧设备为该第二终端配置一条业务承载,以便第二终端可以通过第一终端以及该业务承载与网络侧设备进行数据传输。
该方法可以实现在第二终端与第一终端之间进行D2D通信时,第二终端还可以借助第一终端接入到网络中,进行数据传输,这样在第二终端无法直接接入到基站时,可以通过第一终端提高第二终端的网络服务质量。
应当理解的是,以上的一般描述和后文的细节描述仅是示例性和解释性的,并不能限制本发明。
附图说明
构成本申请的一部分的说明书附图用来提供对本发明的进一步理解,本发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限定。在附图中:
图1为D2D通信方式的一种部署场景图;
图2为本发明实施例提供的连接控制方法可以应用的一种网络架构示意图;
图3为本发明实施例提供的一种连接建立方法的流程示意图;
图4为本发明实施例提供的一种承载映射方法示意图;
图5为本发明实施例提供的另一种连接建立方法的流程示意图;
图6为本发明实施例提供的另一种承载映射方法示意图;
图7为本发明实施例提供的又一种承载映射方法示意图;
图8为本发明实施例提供的再一种承载映射方法示意图;
图9为本发明实施例提供的连接控制方法可以应用的另一种网络架构示意图;
图10为本发明实施例提供的再一种承载映射方法示意图;
图11为本发明实施例提供的连接控制方法可以应用的再一种网络架构示意图;
图12为本发明实施例提供的又一种连接建立方法的流程示意图;
图13为本发明实施例提供的再一种承载映射方法示意图;
图14为本发明一个实施例提供的信令流程图;
图15为本发明另一个实施例提供的信令流程图;
图16为本发明又一个实施例提供的信令流程图;
图17为本发明实施例提供的一种连接控制装置的结构示意图;
图18为本发明实施例提供的另一种连接控制装置的结构示意图;
图19为本发明实施例提供的又一种连接控制装置的结构示意图;
图20为本发明实施例提供的一种终端的结构示意图;
图21为本发明实施例提供的一种eNB的结构示意图;
图22为本发明实施例提供的一种MME的结构示意图。
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实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,对于本领域普通技术人员而言,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。
具体实施方式
为了使本领域技术人员更好地理解本发明方案,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,所述描述的实施例仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施 例,都属于本发明保护的范围。
本发明实施例提供的连接控制方法可以应用于LTE(Long Term Evolution,长期演进)通信系统,例如:TD-LTE(Time Division Long Term Evolution,分时长期演进)或FDD-LTE(Frequency Division Dual Long Term Evolution,频分双工长期演进),也可以应用于其它通信系统,例如:WCDMA(Wideband Code Division Multiple Access,宽带码分多址)、TD-SCDMA(Time Division-Synchronous Code Division Multiple Access,时分同步码分多址)和GSM(Global System for Mobile Communication,全球移动通信系统)。上述列举的多个系统仅是本发明实施例的示意说明,本发明提供的该方法也可应用于其他合适的通信系统,本发明对此并不限制。
本发明实施例以LTE通信系统为例进行说明。图2为本发明实施例提供的连接控制方法可以应用的一种网络架构示意图,参见图2,图中包括:第一终端1,第二终端2和第一eNB(evolved NodeB,演进型基站)3,其中,第一终端1位于第一eNB 3的覆盖范围内,第二终端2从第一eNB 3的覆盖范围内移动到覆盖范围外,第一终端1和第二终端2之间可以进行D2D通信;第一eNB 3与网络服务器4相连接,网络服务器4可以为MME(Mobility Management Entity,移动性管理实体)、S-GW(Serving GateWay,服务网关)和P-GW(Public Data Network GateWay,公用数据网网关)中的任意一个。在本发明实施例中,网络侧设备是指:通信网络中终端的对端网络设备,如图2中的第一eNB 3和网络服务器4都可以称为网络侧设备。
下面以第一终端为例,对本发明实施例提供的连接控制方法进行说明,如图3所示,该连接建立方法包括以下步骤:
S101:第一终端接收第二终端发送的链路配置请求消息。
由于第一终端与第二终端之间可以进行D2D通信,所以在该步骤中,第二终端可以通过D2D通信方式向第一终端发送链路配置请求消息。链路配置请求消息用于请求在第一终端与网络设备之间建立传输第二终端的业务数据的通信连接。
在本发明实施例中,第二终端在满足触发条件后,可以决定连接到第一终端上,即与第一终端进行D2D通信。触发条件可以为:第二终端出现RLF(Radio Link Failure,无线链路失败),或者第二终端与eNB之间的信号质量低于一个门限值,或者第二终端处于小区边缘等。
在进行D2D通信前,首先第二终端向第一终端发起直接通信建立请求;如果第一终端接受第一终端的D2D通信连接建立请求,则响应第二终端D2D通信建立的配置信息,用于完成D2D通信的建立,当第二终端接收到第一终端发送的D2D通信建立的配置信息并完成配置后,会向第一终端发送D2D通信设置完成消息。在本发明实施例中,链路配置请求消息可以为第二终端发送的直接通信建立请求消息或第二终端发送的D2D通信设置完成消息。
在本发明实施例中,该链路配置请求消息中可以携带第二终端的上下文信息,第二终端的上下文信息是指第二终端在原接入基站覆盖范围内与网络侧设备建立通信链路的参数信息,例如:第二终端的标识ID,其中,第二终端的标识ID可以为第二终端在eNB中的ID或第二终端在MME、S-GW或P-GW中的ID,并且第二终端在第一eNB中的ID与第二终端在MME、S-GW或P-GW中的ID可以不相同,其中,第二终端在第一eNB中的ID可以是C-RNTI(Cell Radio Network Temporary Identifier,小区无线网络临时标识),在MME、S-GW或P-GW中的ID可以是IMEI(International Mobile Equipment Identity,国际移动设备身份码),TMSI(Temporary Mobile Subscriber Identity,临时识别码),IMSI(International Mobile Subscriber Identification Number,国际移动用户识别码);第二终端的原接入小区标识ID可以是ECGI(E-UTRAN Cell Global Identifier,演进型-通用移动通信系统陆地无线接入网小区全局标识符)。
另外,在其它实施例中,上下文信息还可以携带第二终端的原接入小区标识ID或者P-GW为第二终端分配的第一IP地址等参数。
S102:第一终端根据链路配置请求消息向网络侧设备发送承载配置请求消息。
在本发明实施例中,承载配置请求消息至少包括:无线承载修改请求消息或请求承载资源修改消息,并且在该承载配置请求消息中通常携带有前述第二终端的上下文信息,并且该承载配置请求消息的作用是请求网络侧设备配置业务承载,业务承载用于传输第二终端的业务数据。
业务承载是指可以将第二终端经由第一终端接入到网络的链路。在一个实施例中,当网络侧设备为第一eNB时,业务承载可以为第一终端与第一eNB之间的无线承载,在具体实施例中,此无线承载也称为端到端(End-to End)承载,相应地,该步骤S102可以包括以下步骤:
根据上下文信息,向第一终端所在的第一基站eNB发送无线承载修改请求消息(Radio Bearer Modification Request)将承载配置请求消息发送给第一终端所在的第一基站eNB。
第一eNB接收到该无线承载修改请求消息后,在第一eNB和第一终端之间为第二终端配置第一无线承载,并将第一无线承载作为传输第二终端业务数据的业务承载。
在另一实施例中,当网络侧设备为MME时,业务承载可以是第一终端与第一eNB之间的无线承载,以及,第一eNB与S-GW之间的EPS(Evolved Packet System,演进分组系统)承载对应的S1承载,即业务承载为无线承载和S1承载共同组成的链路,相应地,该步骤S102可以包括以下步骤:
根据上下文信息向移动管理实体MME发送请求承载资源修改消息(Request Bearer Resource Modification)。
MME接收到该请求承载资源修改消息后,在第一eNB与S-GW之间为第二终端配置一个第二S1承载,且MME控制第一eNB在第一eNB与第一终端之间配置第一无线承载,并将配置的第二S1承载和第一无线承载作为传输第二终端业务数据的业务承载。此外,在网络控制下,S-GW与P-GW之间的承载,可以称为S5/S8承载,并且S5/S8是在建立S1承载过程中建立起来的,以下内容如果没有特别说明,在建立S1承载时,默认也建立与S1承载对应的S5/S8承载。
S103:第一终端接收网络侧设备根据承载配置请求消息发送的承载配置完成消息。
当网络侧设备接收到该承载更新请求后,会为第二终端配置经由第一终端接入到网络的业务承载。当配置完成后,网络侧设备会生成承载配置完成消息并发送给第一终端,在承载配置完成消息中携带有业务承载的ID,例如:第一终端与第一eNB之间的第一无线承载ID。
S104:第一终端建立业务承载与第二终端之间的映射关系。
在确定网络侧设备为第二终端配置完成业务承载后,第一终端会在第一终端本地建立业务承载与第二终端的映射关系,以使第一终端在收发数据时,可以根据该映射关系进行数据传输,例如:在数据上行阶段,可以将第二终端的上行数据发送到该业务承载上,在数据下行阶段,可以将该业务承载上第二终端的下行 数据发送给第二终端,进而实现第二终端与网络之间的数据传输。
S105:第一终端在建立映射关系后向第二终端发送链路配置完成消息。
该链路配置完成消息的主要目的是为了通知第二终端:业务承载已经配置完成。表示第二终端可以利用该业务承载,通过第一终端与网络侧设备进行数据传输。
本发明实施例提供的该方法,第一终端通过接收第二终端的链路配置请求消息,可以请求网络侧设备为该第二终端配置一条业务承载,以便第二终端可以利用该业务承载,通过第一终端与网络侧设备进行数据传输。
在本发明实施例中,业务承载无论是第一终端与第一eNB之间的第一无线承载,还是由第一终端与第一eNB之间第一无线承载以及第一eNB与网关之间的第二S1承载共同组成的链路,在建立业务承载与第二终端之间的绑定关系时,业务承载的ID均可以采用第一无线承载的ID来表示。
在本发明一个实施例中,图3所示实施例中的步骤S104可以包括以下步骤:
第一终端建立第一无线承载的ID与第二终端的ID的映射关系;
或者,第一终端建立第一无线承载的ID与第一IP地址的映射关系,上下文信息中还包括数据网关P-GW为第二终端分配的第一IP地址;
或者,第一终端为第二终端分配第二IP地址,并建立第一IP地址与第二IP地址的映射关系,以及,建立第一无线承载的ID与第二IP地址的映射关系,上下文信息中还包括数据网关P-GW为第二终端分配的第一IP地址。
在第一终端为第二终端分配第二IP地址的情况下,在第一终端和第二终端之间进行数据传输时,第二终端的IP地址全部采用第二IP地址,而在第一终端与S-GW之间,第二终端的IP地址仍采用第一IP地址。为此,当第二终端在利用第二IP地址与网络进行数据传输时,针对上行数据,该方法还可以包括以下步骤:
S11:第一终端接收第二终端使用第二IP地址作为源IP地址发送的上行数据。
第二终端的上行数据是第二终端通过D2D通信发送给第一终端的,并且由于第一终端已经为第二终端分配了新的IP地址,即第二IP地址。所以,第二终端 在发送上行数据直接使用第二IP地址作为源IP地址。
S12:第一终端将上行数据的源IP地址替换为第一IP地址。
由于第二IP地址仅仅是在第一终端和第二终端之间进行数据传输时使用,所以当第一终端需要将第二终端的上行数据发送给网络时,仍然需要使用网关为第二终端分配的第一IP地址,才可以被网关识别出来。
S13:第一终端通过与第二IP地址相映射的第一无线承载将源IP地址替换后的上行数据发送给第一eNB。
当第二终端在利用第二IP地址与网络进行数据传输时,针对下行数据,该方法还可以包括以下步骤:
S14:第一终端通过与所述第二IP地址相映射的第一无线承载接收第二终端的、使用所述第一IP地址作为目的IP地址的下行数据。
下行数据是第一eNB通过第一无线承载下发给第二终端的,对于网络而言,只能通过网关为第二终端分配的第一IP地址来确定第二终端。
S15:第一终端将下行数据的目的IP地址替换为第二IP地址。
由于第二IP地址仅仅是在第一终端和第二终端之间进行数据传输时使用,所以当第一终端需要将第二终端的下行数据发送给第二终端时,需要将下行数据中的目的IP地址替换为第二IP地址,才可以根据第二IP地址准确找到第二终端。
S16:第一终端将目的IP地址替换后的下行数据发送给第二终端。
在本发明另一实施例中,第二终端的上下文信息中还可以包括:第二终端的原接入小区ID,为此,该方法还可以包括以下步骤:
第一终端接收上下文信息中的第二终端的原接入小区ID。
第一终端将第二终端的原接入小区ID发送给第一eNB。
通过该步骤,可以使第一eNB了解第二终端的原接入小区ID。
下面以第一eNB为例,对本发明实施例提供的连接控制方法进行说明。
在本发明实施例中,参见图2所示,第一终端1位于第一eNB 3的覆盖范围 内,第二终端2从第一eNB 3的覆盖范围内移出。另外,在本发明实施例中,第一终端可以称为Relay UE,第二终端可以称为Remote UE。结合图2,当第二终端2在第一eNB 3的覆盖范围内时,参见图4,第二终端用UE a来表示,第一终端用Relay UE来表示,可见,UE a与第一eNB之间存在有第二无线承载001,并且在第一eNB与S-GW之间存在与第二无线承载001相映射的第一S1承载002。另外,在图4中,P-GW为UE a分配的IP地址为IP=1,Radio Bearer ID可以作为第二无线承载的ID;EPS Bearer ID可以作为第一S1承载的ID。
如图5所示,该连接控制方法包括以下步骤:
S201:第一基站eNB接收第一终端发送的无线承载修改请求消息。
无线承载修改请求消息中携带有第二终端的上下文信息,并且上下文信息中至少包括第二终端的ID。
S202:第一eNB根据无线承载修改请求消息,在第一eNB与第一终端之间配置第一无线承载。
第一无线承载用于传输第二终端的业务数据。关于第一无线承载的具体配置方式为本领域技术人员的公知技术,在此不再赘述。
S203:第一eNB在第一eNB中存在的S1承载中,查找与第二终端的ID相对应的第一S1承载。
参见图2所示,如果第二终端是从第一eNB的覆盖范围内移出,那么当第二终端移出之前位于第一eNB的覆盖范围内时,可以通过第一eNB接入到网络,所以在第一eNB中会存在配置给第二终端接入到网络的第一EPS承载,这里也可以称为第二终端在第一eNB中的历史EPS承载。在本文中,EPS承载包括无线承载、S1承载、S5/S8承载。由于EPS承载的标识在终端设备、eNB、MME、S-GW、P-GW等设备上都有存储,因而根据EPS承载标识可以唯一确定一个无线承载或S1承载或S5/S8承载。
在本发明实施例中,该步骤S203可以包括以下步骤:第一eNB从上下文信息中提取第二终端的ID;在第一eNB上存在的所有S1承载中查找与第二终端的ID相对应的EPS承载标识对应的第一S1承载。
S204:第一eNB建立第一无线承载与第一S1承载的映射关系。
在本公开实施例中,映射关系可以为第一无线承载ID与第一S1承载ID之 间的映射关系。在建立映射关系后,可以使第一eNB将第二终端通过第一无线承载传输的上行数据映射到第一S1承载上,然后通过第一S1承载,以及S5/S8承载将上行数据发送给网络;另外,还可以使第一eNB将第一S1承载上接收到的属于第二终端的下行数据映射到第一无线承载上,然后通过第一无线承载、第一终端最终发送给第二终端,进而实现第二终端与网络之间的数据传输。
S205:第一eNB在建立映射关系后向第一终端发送承载配置完成消息。
在承载配置完成消息中携带有第一无线承载的ID,通过承载配置完成消息,可以通知第一终端:第一无线承载已经配置完成。
参见图6所示,第二终端2与第一终端1的D2D通信为004,在第一终端1与第一eNB 3之间是用于传输第二终端2业务数据的第一无线承载003。在实际应用中,第二终端2与第一终端1之间存在逻辑上的链路,图6中所示仅是为了示意说明,不应构成对本申请的限制。
从图6中可以看到,第二终端2可以通过第一无线承载003、第一S1承载002与网关进行数据传输。
在本发明实施例中,对于从第一eNB覆盖范围内移出的第二终端,第一eNB可以在第一eNB与第一eNB覆盖范围内的第一终端之间配置一条第一无线承载,并且将网络下发给第二终端的下行数据通过第一无线承载以及第一终端发送给第二终端,另外,通过第一无线承载接收第二终端通过第一终端发送的上行数据,并将上行数据转发给网关等设备,实现第二终端与网络进行数据传输。
在本发明实施例中,由于第二终端从第一eNB的覆盖范围内移出,并且,在第一eNB与网关之间保留了第二终端的第一S1承载,所以第二终端仍旧可以接入到原来接入的第一eNB,这样就能够缩短连接建立、用户验证等过程的延时,提高了第二终端接入网络的速度。
在本发明实施例中,作为Relay UE的第一终端可以同时与作为Remote UE的一个或多个第二终端进行D2D通信,这样也就意味着,第一终端可能需要同时为多个第二终端提供网络接入服务。
在一个具体实施例中,可以为每个第二终端分别配置一条无线承载,分别用于为每个第二终端进行数据传输。为此,上述步骤S202中,第一eNB为第二终端配置第一无线承载时,可以采用以下方式:
第一eNB在第一eNB与第一终端之间建立新的第一无线承载。
也即在本实施例中,在第一eNB与第一终端之间为每个第二终端均新建一个第一无线承载,这样,新建立的第一无线承载是专属于一个第二终端,用于传输该第二终端的业务数据,数据传输的示意图如图6所示(图6中仅示出了一个第二终端UE a的情况,其它第二终端的数据传输与UE a类似)。另外,在图6中,P-GW为UE a分配的IP地址为IP=1,Relay UE为UE a分配的IP地址为IP=2,在后续数据的传输过程中,详细可见上述步骤S11-S13以及步骤S21-S23的描述。
在另一实施例中,如图7所示,在图7中,Relay UE继续使用UE a的IP地址,进而在数据传输过程中,UE a的上行数据的源IP地址全部为IP=1,UE a的下行数据的目的IP地址全部为IP=1。
在另一实施例中,还可以至少两个第二终端共用一条无线承载。为此,上述步骤S202中,第一eNB为第二终端配置第一无线承载时,可以采用以下方式:
第一eNB将第一eNB与第一终端之间一个已有的无线承载配置为第一无线承载。
这里,已有的无线承载是用于传输其它第二终端的业务数据,也就说,在本实施例中,当在第一eNB与第一终端之间为其它第二终端建立好无线承载后,在为后续第二终端配置第一无线承载时,就可以将已有的无线承载配置给后续第二终端,如图8所示,图中,第一无线承载003可以被多个第二终端共用,在图8中,其它的第二终端可以用UE b来表示,相应地,与每个第二终端相对应的第一S1承载,用字母进行区分,即UE a对应第一S1承载a,UE b对应第一S1承载b。
此外,在将已有的无线承载作为第一无线承载时,还可以是共用相同服务质量要求的第一无线承载,即预先建立多个具有不同服务质量要求的已有的无线承载,在为后续第二终端配置时,可以选择具有相同服务质量要求的已有的无线承载作为第一无线承载,即不同的第二终端都可以共用相同服务质量要求的第一无线承载。为此,上述步骤S202中,第一eNB为第二终端配置第一无线承载时,可以采用以下方式:
将第一eNB与第一终端之间已有的具有相同服务质量要求的无线承载作为第一无线承载,若第一eNB与第一终端之间不存在第二终端要求的服务质量的无线 承载,则新建立满足第二终端要求的服务质量的无线承载并配置给第二终端。
在上述步骤S202的三种实现方式中,分别描述了三种为第二终端配置第一无线承载的方式,但无论哪种配置方式,一旦为第二终端配置完第一无线承载后,在后续数据传输过程中,针对上行数据,该方法可以包括以下步骤:
S21:第一eNB通过第一S1承载接收第二终端的下行数据。
S22:第一eNB通过与第一S1承载相映射的第一无线承载,将下行数据发送给第一终端。
针对下行数据,该方法可以包括以下步骤:
S23:第一eNB通过第一无线承载接收第一终端的上行数据。
S24:第一eNB通过与第一无线承载相映射的第一S1承载上传上行数据。
在前述图5所示实施例中,是以第一终端位于第一eNB的覆盖范围内,第二终端从第一eNB的覆盖范围内移出的场景进行描述的。参见图9所示,在本发明另一实施例中,第一终端位于第一eNB的覆盖范围内,第二终端也位于第一eNB的覆盖范围内,并且第二终端通过第二无线承载接入到第一eNB上。
为此,在图5所示实施例的基础上,该方法还可以包括以下步骤:
保留第二无线承载。
并且第二无线承载与第一S1承载之间有映射关系。
在保留第二无线承载的情况下,对于第二终端而言,一方面,第二终端可以直接利用该第二无线承载与第一eNB进行数据传输,另一方面还可以与第一终端之间进行D2D通信,进而利用第一终端之间的第一无线承载与第一eNB进行数据传输。
如图10所示,可见,在图10中,UE a可以同时拥有第二无线承载和第一无线承载,并且可以同时利用第二无线承载和第一无线承载接入到第一eNB中。
为此,在本发明一个实施例中,针对下行数据,该方法还可以包括以下步骤:
S31:第一eNB通过第一S1承载接收第二终端的下行数据;
S32:第一eNB通过与第一S1承载相映射的第二无线承载将下行数据发送给第二终端。
在本发明其它实施例中,在步骤S32中,可以通过第二无线承载或第一无线承载发送第二终端的下行数据,还可以通过第二无线承载和第一无线承载发送第二终端的下行数据,例如:将第二终端的某一下行数据分成至少两部分,其中一些部分利用第二无线承载发送给第二终端,另一部分利用第一无线承载,通过第一终端发送给第二终端。
在本发明另一个实施例中,针对上行数据,该方法还可以包括以下步骤:
S33:第一eNB通过第二无线承载接收第二终端的上行数据;
S34:通过与第一无线承载、第二无线承载相映射的第一S1承载上传上行数据。
在本发明其它实施例中,在步骤S33中,可以通过第二无线承载或第一无线承载分别接收第二终端的上行数据,还可以通过第二无线承载和第一无线承载分别接收第二终端的上行数据,例如:将第二终端的某一上行数据分成至少两部分,其中一些部分通过第二无线承载发送,另一部分通过第一终端、第一无线承载发送。
参见图11所示的场景示意图,在本发明另一实施例中,第一终端1位于第一eNB 3的覆盖范围内,第二终端2原来位于源eNB 5的覆盖范围内,然后第二终端2从源eNB 5的覆盖范围内移出,且位于第一eNB 3的覆盖范围外,第二终端2与第一终端1可以进行D2D通信。
在图11所示场景中,第二终端2在源eNB 5中存在S1承载,而在第一eNB中并不存在S1承载。所以,需要首先将第二终端2的接入基站由源eNB 5切换到第一eNB 3上,然后才可以实现将第二终端2通过第一终端1,以及,第一eNB3接入到网络中。
为此,在本发明实施例中,在第二终端2的上下文信息中还可以携带有第二终端2的原接入小区ID,即源eNB 5的ID,并且在步骤S201之后,该方法还可以包括以下步骤:
当第一eNB的ID与原接入小区ID相同时,执行上述步骤S202。
当第一eNB的ID与原接入小区ID不相同时,向原接入小区ID对应的源eNB5发送切换请求消息,当接收到源eNB 5发送的切换确认消息时,执行上述步骤S202。
源eNB 5接收到切换请求后,可以对第二终端2进行基站切换,将第二终端切换到第一eNB 3上,并且在切换完成后,会向第一eNB发送切换确认消息。在本领域中,基站的切换过程为本领域技术人员所公知的技术,在此不再赘述。
当基站切换完成后,一种情况下,第二终端可能会随时移动到第一eNB的覆盖范围内,此时第一eNB会向MME请求建立新的S1,然后再为第二终端建立新的无线承载,即可以实现第二终端通过第一终端、第一eNB与网络进行通信的目的。
另外,当基站切换完成后,另一种情况下:第二终端可能会随时回到源eNB的覆盖范围内,所以可以在源eNB中保留第二终端的上下文信息,并启动一个定时器,当定时器超时时,释放源eNB中保留的第二终端的上下文信息,这样可以使当第二终端移动到源eNB的覆盖范围内时,快速接入到源eNB中。
此外,当基站切换完成后,再一种情况下:可以不考虑第二终端移动到源eNB的覆盖范围内的情况的发生,为此,在本发明实施例中,该方法还可以包括以下步骤:
当在第一eNB与第一终端之间配置第一无线承载后,第一eNB向源eNB发送承载释放请求,以使源eNB释放第二终端的上下文信息。
通过发送承载释放请求,可以提高源eNB的利用率。
下面以MME为例,对本发明实施例提供的连接控制方法进行说明。
无论是图2、图9还是图11所示场景,第二终端都可以生成链路配置请求消息,并且将链路配置请求消息发送给第一终端,由第一终端生成承载配置请求消息并发送给MME,以使MME直接为第二终端建立新的EPS承载,即从S-GW到第一终端之间的新的无线承载以及S1承载。
如图12所示,该连接控制方法包括以下步骤:
步骤S301:MME接收第一终端发送的请求承载资源修改消息。
承载更新请求中携带有第二终端的上下文信息,上下文信息中至少包括第二 终端的标识。
步骤S302:MME根据请求承载资源修改消息,在第一eNB与服务网关S-GW之间配置第二S1承载。
第二S1承载用于传输第二终端的业务数据,且第二S1承载的标识可以与第二终端的ID相对应。
步骤S303:MME根据请求承载资源修改消息向第一eNB发送承载资源命令消息。
通过该步骤,可以使第一eNB在第一eNB与第一终端之间为第二终端配置第一无线承载。
参见图13所示,图中第二S1承载为006,第一无线承载为003,通过该方法实施例,UE a可以利用第一无线承载、第二S1承载,通过Relay UE和第一eNB与网络进行数据传输。
本发明实施例提供的该方法,与图5所示实施例相比,Relay UE建立了第一终端到网关之间全新的独立承载,并且由P-GW进行数据映射过程的处理,即在第二终端的整个数据传输过程中,映射发生在P-GW和Relay UE,而在图5实施例中,数据映射过程发生在第一eNB和Relay UE中。
在本发明实施例中,上述步骤S302可以包括以下步骤:
S3021:MME为第二终端分配第二S1承载的标识ID。
承载资源命令中携带有为第二终端分配的第二EPS承载的标识;第二EPS承载的标识可以用于标识第二S1承载;
S3022:MME向S-GW发送承载资源命令消息,承载资源命令消息中携带有第二S1承载的标识ID;
S3023:MME接收S-GW发送的创建承载请求消息;
S3024:MME根据创建承载请求消息,向第一eNB发送承载设置E-RAB修改请求消息;
S3025:MME接收第一eNB根据E-RAB(Evolution Radio Access Bearer,演进的无线接入承载)修改请求消息发送的E-RAB修改承载设置响应消息。
S3026:MME根据E-RAB修改承载设置响应消息,向S-GW发送创建承载响应消息,以在S-GW和第一eNB之间建立第二S1承载。
通过上述步骤,可以在S-GW和第一eNB之间建立EPS承载中的第二S1承载。在本发明实施例中,上述EPS承载中的S1承载的建立过程为本领域人员的公知常识,在此不再赘述。
下面以具体的实施例对本发明实施例提供的方法进行说明:
(1)、图14为本发明一个实施例提供的信令流程图。
在本发明实施例中,如图14所示,图中第一终端为Relay UE,第二终端为UE a,另外,Relay UE位于第一eNB覆盖范围内,UE a从第一eNB覆盖范围内移出,Relay UE与第一eNB之间设置有无线承载000,当UE a位于第一eNB覆盖范围内时,UE a与第一eNB之间设置有第二无线承载001,并且第一eNB与S-GW之间设置有用于传输UE a的数据的第一S1承载002,当UE a移出第一eNB的覆盖范围时,UE a与Relay UE之间可以进行D2D通信,该方法可以包括以下步骤:
S1-1:UE a向Relay UE发送链路配置请求消息。
S1-2:Relay UE向第一eNB发送无线承载修改请求消息。
该无线承载修改请求消息是发送给第一eNB的,以使第一eNB为UE a在第一eNB与Relay UE之间配置第一无线承载。在承载更新请求中携带有UE a的标识。
S1-3:第一eNB根据无线承载修改请求消息与Relay UE建立RRC连接。
创建后的RRC连接可为UE a在第一eNB与Relay UE之间配置第一无线承载,如图14所示第一无线承载为003。
S1-4:第一eNB查找与UE a标识对应的第一S1承载,并建立第一S1承载与第一无线承载的映射关系。
由于UE a是从第一eNB的覆盖范围内移出,所以在第一eNB中存在UE a历史接入网络时对应的第一S1承载,通过UE a的标识可在第一eNB中查找到该第一S1承载。
S1-5:Relay UE建立第一无线承载与UE a的映射关系。
S1-6:Relay UE生成链路配置完成消息并发送给UE a。
通过图14所示实施例,可见,当UE a收到链路配置完成消息后,UE a就可以利用第一无线承载003和第一S1承载002,通过Relay UE、第一eNB与网络进行数据传输,使UE a可以通过Relay UE接入到网络中。
(2)、图15为本发明另一个实施例提供的信令流程图。
在本发明实施例中,如图15所示,图中第一终端为Relay UE,第二终端为UE a,另外,Relay UE位于第一eNB覆盖范围内,UE a从第一eNB覆盖范围内移出,Relay UE与第一eNB之间设置有用于传输Relay业务数据的无线承载000,当UE a位于第一eNB覆盖范围内时,Relay UE与第一eNB之间设置有第二无线承载001,并且第一eNB与S-GW之间设置有用于传输UE a的数据的第一S1承载002,当UE a移出第一eNB的覆盖范围时,Relay UE与UE a之间可以进行D2D通信,该方法可以包括以下步骤:
S2-1:UE a向Relay UE发送链路配置请求消息。
S2-2:Relay UE向MME发送请求承载资源修改消息。
该请求承载资源修改消息是发送给MME,以使MME接收到请求承载资源修改消息时,可以在Relay UE上为UE a配置业务承载。
S2-3:MME为第二终端分配第二S1承载的标识;
S2-4:MME向S-GW发送承载资源命令消息;
承载资源命令消息中携带有第二S1承载的ID。
S2-5:S-GW/P-GW向MME发送创建承载请求消息;
S2-6:MME向第一eNB发送E-RAB修改请求消息;
S2-7:第一eNB与Relay UE建立RRC连接;
创建后的RRC连接可为UE a在第一eNB与Relay UE之间配置第一无线承载,如图15所示第一无线承载为003。
S2-8:第一eNB向MME发送E-RAB修改响应消息;
S2-9:MME向S-GW发送创建承载响应消息;
S-GW接收到创建承载响应,即可在第一eNB与S-GW之间为UE a建立了第二 S1承载,如图15所示,该第二S1承载为006。
S2-10:第一eNB建立第二S1承载与第一无线承载的映射关系。
S2-11:Relay UE建立第一无线承载与UE a的映射关系。
S2-12:Relay UE生成链路配置完成消息并发送给UE a。
通过图15所示实施例中,可见,当UE a收到链路配置完成消息后,UE a就可以利用第一无线承载003和第二S1承载006,通过Relay UE、第一eNB与网络进行数据传输,使UE a可以通过Relay UE接入到网络中。
(3)、图16为本发明另一个实施例提供的信令流程图。
在本发明实施例中,如图16所示,图中第一终端为Relay UE,第二终端为UE a,另外,Relay UE位于第一eNB覆盖范围内,UE a位于源eNB的覆盖范围内且位于第一eNB的覆盖范围外,UE a与源eNB之间设置有无线承载010,Relay UE与第一eNB之间设置有无线承载012,第一eNB与S-GW之间设置用于传输第一终端业务数据的S1承载013,UE a与Relay UE之间可以进行D2D通信,该方法可以包括以下步骤:
S3-1:UE a向Relay UE发送链路配置请求消息。
S3-2:Relay UE向第一eNB发送无线承载修改请求消息。
该无线承载修改请求消息是发送给第一eNB的,以使第一eNB为UE a在第一eNB与Relay UE之间配置第一无线承载。在无线承载修改请求消息中携带有UE a的标识。在无线承载修改请求消息中还携带有UE a的原接入小区ID,即源eNB的小区的ID。
S3-3:第一eNB向源eNB发送切换请求消息。
通过发送切换请求,可以将UE a的接入基站从源eNB切换到第一eNB。
S3-4:源eNB向第一eNB发送切换请求确认消息。
S3-5:第一eNB向MME发送EPS承载配置请求消息。
当第一eNB接收到切换请求确认消息后,表示可以为UE a建立接入网络的业务承载,但由于UE a之前没有接入过第一eNB,所以,第一eNB上没有UE a的S1承载。所以,第一eNB需要向MME发送EPS承载配置请求消息,以使MME 在第一eNB与S-GW之间为UE a配置一条新的S1承载。
S3-6:MME为第二终端分配第二S1承载的标识;第二S1承载的标识可以用MME为第二终端分配的EPS的标识来表示;
S3-7:MME向S-GW发送承载资源命令消息;
承载资源命令消息中携带有第二S1承载的ID。
S3-8:S-GW/P-GW向MME发送创建承载请求消息;
S3-9:MME向第一eNB发送E-RAB修改请求消息;
S3-10:第一eNB与Relay UE建立RRC连接;
创建后的RRC连接可为UE a在第一eNB与Relay UE之间配置的第一无线承载,如图16所示第一无线承载为003。
S3-11:第一eNB向MME发送E-RAB修改响应消息;
S3-12:MME向S-GW发送创建承载响应消息;
S-GW接收到创建承载响应消息,即可在第一eNB与S-GW/P-GW之间为UE a建立第二S1承载,如图16所示,该第二S1承载为005。
S3-13:第一eNB建立第二S1承载与第一无线承载的映射关系。
S3-14:Relay UE建立第一无线承载与UE a的映射关系。
S3-15:Relay UE生成链路配置完成消息并发送给UE a。
通过图16所示实施例,可见,当原接入基站为源eNB的UE a与Relay UE进行直接通信时,UE a可以向Relay UE发送链路配置请求消息,以使Relay UE向第一eNB发送无线承载修改请求消息求,第一eNB接收到该无线承载修改请求消息后,可以与源eNB进行基站切换,并且向MME发起EPS承载配置请求,以便在第一eNB与S-GW/P-GW之间为UE a建立第二S1承载,并且第一eNB还会在第一eNB与Relay UE之间为UE a建立第一无线承载,这样当UE a接收到链路配置完成消息后,UE a就可以利用通过第一无线承载003和第二S1承载005,通过Relay UE、第一eNB与网络进行数据传输,使UE a可以通过Relay UE接入到网络中。
通过以上的方法实施例的描述,所属领域的技术人员可以清楚地了解到本发 明可借助软件加必需的通用硬件平台的方式来实现,当然也可以通过硬件,但很多情况下前者是更佳的实施方式。基于这样的理解,本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本发明各个实施例方法的全部或部分步骤。而前述的存储介质包括:只读存储器(ROM)、随机存取存储器(RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
与本发明图3提供的连接控制方法实施例相对应,本发明还提供了一种连接控制装置,应用于eNB中,如图17所示,该连接控制装置可以包括:接收单元171、发送单元172和处理单元173,其中,
接收单元171,用于接收第二终端发送的链路配置请求消息,链路配置请求消息中携带有第二终端的上下文信息,上下文信息中至少包括第二终端的标识ID;
发送单元172,用于根据链路配置请求消息向网络侧设备发送承载配置请求消息,承载配置请求消息包括:无线承载修改请求消息或请求承载资源修改消息,承载配置请求消息中携带有上下文信息,承载配置请求消息用于请求网络侧设备配置业务承载,业务承载用于传输第二终端的业务数据;
接收单元171,还用于接收网络侧设备根据承载配置请求消息发送的承载配置完成消息,承载配置完成消息中携带有业务承载ID;
处理单元173,用于建立业务承载与第二终端之间的映射关系;
发送单元172,还用于在建立映射关系后向第二终端发送链路配置完成消息,以使第二终端利用业务承载,通过第一终端与网络侧设备进行数据传输。
在本发明一实施例中,图17中所示的发送单元172,根据链路配置请求消息向网络侧设备发送承载配置请求消息,包括:
根据上下文信息,向第一终端所在的第一基站eNB发送无线承载修改请求消息,以使第一eNB在第一eNB和第一终端之间配置第一无线承载,第一无线承载用于传输第二终端的业务数据。
在本发明另一实施例中,图17中所示的发送单元172,根据链路配置请求消 息向网络侧设备发送承载配置请求消息,包括:
根据上下文信息向移动管理实体MME发送请求承载资源修改消息,以使MME在第一eNB与服务网关S-GW之间配置第二S1承载,以及,以使MME控制第一eNB在第一eNB与第一终端之间配置第一无线承载,第二S1承载和第一无线承载用于传输第二终端的业务数据。
在本发明另一实施例中,图17中所示的处理单元173,建立业务承载与第二终端之间的映射关系,包括:
建立所述第一无线承载的ID与所述第二终端的ID的映射关系;或者,建立所述第一无线承载的ID与第一IP地址的映射关系,所述上下文信息中还包括数据网关P-GW为所述第二终端分配的第一IP地址;或者,为所述第二终端分配第二IP地址;并建立所述第一无线承载的ID与所述第二IP地址的映射关系,以及建立所述第一IP地址与所述第二IP地址的映射关系,所述上下文信息中还包括数据网关P-GW为所述第二终端分配的第一IP地址。
在本发明另一实施例中,在上行方向上,接收单元171,还用于接收第二终端使用第二IP地址作为源IP地址发送的上行数据,上行数据的源IP地址是第二IP地址;处理单元172,还用于将上行数据的源IP地址替换为第一IP地址;发送单元173,还用于通过与所述第二IP地址相映射的第一无线承载将源IP地址替换后的上行数据发送给第一eNB;
在下行方向上,接收单元171,还用于通过与所述第二IP地址相映射的第一无线承载接收第二终端的、使用所述第一IP地址作为目的IP地址的下行数据,下行数据的目的IP地址是第一IP地址;处理单元173,还用于将下行数据的目的IP地址替换为第二IP地址;发送单元172,还用于将目的IP地址替换后的下行数据发送给第二终端。
在本发明另一实施例中,在第二终端的上下文信息中还包括:所述第二终端的原接入小区ID,所述接收单元171,还用于接收所述上下文信息中的所述第二终端的原接入小区ID;所述发送单元172,还用于将所述第二终端的原接入小区ID发送给所述第一eNB。在该实施例中,第一eNB可以了解第二终端的原接入小区ID。
与本发明图5提供的连接控制方法实施例相对应,本发明还提供了一种连接控制装置,应用于终端中,如图18所示,该连接控制装置可以包括:接收单元181、发送单元182和处理单元183,其中,
接收单元181,用于接收第一终端发送的无线承载修改请求消息,无线承载修改请求消息中携带有第二终端的上下文信息,上下文信息中至少包括第二终端的标识;
处理单元183,用于根据无线承载修改请求消息,在第一eNB与第一终端之间配置第一无线承载,第一无线承载用于传输第二终端的业务数据;
处理单元183,还用于在第一eNB中存在的且位于第一eNB与服务网关S-GW之间S1承载中,查找与第二终端的标识ID相对应的第一S1承载;
处理单元183,还用于建立第一无线承载与第一S1承载的映射关系;
发送单元182,用于建立映射关系后向第一终端发送承载配置完成消息,承载配置完成消息中携带有第一无线承载的ID。
在本发明一实施例中,图18中所示的处理单元183,在第一eNB与第一终端之间配置第一无线承载,包括:
将第一eNB与第一终端之间一个已有的无线承载配置为第一无线承载;已有的无线承载用于传输其它第二终端的业务数据;或者,在第一eNB与第一终端之间建立第一无线承载。
在本发明一实施例中,上下文信息还包括:第二终端的原接入小区ID。,图18中所示的处理单元183,还用于当第一eNB的ID与原接入小区ID相同时,根据无线承载修改请求消息,在第一eNB与第一终端之间配置第一无线承载
在本发明一实施例中,图18中所示的发送单元182,还用于当第一eNB的ID与原接入小区ID不相同时,向与原接入小区ID相对应的源eNB发送切换请求消息;接收单元181,还用于接收源eNB发送的切换确认消息;处理单元183,还用于当接收源eNB发送的切换确认消息时,第一eNB根据无线承载修改请求消息,在第一eNB与第一终端之间配置第一无线承载。
在本发明一实施例中,在上行方向上,图18中所示的接收单元181,还用于通过第一S1承载接收第二终端的下行数据;发送单元182,还用于通过与第一S1承载相映射的第一无线承载,将下行数据发送给第一终端,以使第一终端将下 行数据转发给第二终端;
在本发明一实施例中,在下行方向上,图18中所示的接收单元181,还用于通过第一无线承载接收第二终端的上行数据;发送单元182,还用于通过与第一无线承载相映射的第一S1承载上传上行数据。
与本发明图12提供的连接控制方法实施例相对应,本发明还提供了一种连接控制装置,应用于MME中,如图19所示,该连接控制装置可以包括:接收单元191、发送单元192和处理单元193,其中,
接收单元191,用于接收第一终端发送的请求承载资源修改消息,请求承载资源修改消息中携带有第二终端的上下文信息,上下文信息中至少包括第二终端的标识ID;
处理单元192,用于根据请求承载资源修改消息,在第一eNB与服务网关S-GW之间配置第二S1承载,第二S1承载用于传输第二终端的业务数据;
发送单元193,用于根据请求承载资源修改消息向第一eNB发送无线资源控制RRC重配置消息,以使第一eNB在第一eNB与第一终端之间配置第一无线承载,第一无线承载用于传输第二终端的业务数据。
在本发明一实施例中,处理单元193,还用于为第二终端分配第二S1承载的标识;
发送单元192,还用于向S-GW发送承载资源命令消息,承载资源命令消息中携带有第二S1承载的标识;
接收单元191,还用于接收S-GW发送的创建承载请求消息;
发送单元192,还用于根据创建承载请求消息,向第一eNB发送承载设置请求消息;
接收单元191,还用于接收第一eNB根据承载设置请求消息发送的承载设置响应消息;
发送单元192,还用于根据承载设置响应消息,向S-GW发送创建承载响应消息,以在S-GW和第一eNB之间建立第二S1承载。
本发明实施例还提供一种终端,如图20所示,该终端200可以包括:至少一个处理器201、至少一个通信总线202、至少一个通信接口203和至少一个存储器204,其中,
通信总线202用于实现这些组件之间的连接通信;存储器204可以包括只读存储器和随机存取存储器,并向处理器201提供指令和数据。存储器204的一部分还可以包括非易失性随机存取存储器(NVRAM)。
在一些实施方式中,存储器204存储了如下的元素,可执行模块或者数据结构,或者他们的子集,或者他们的扩展集;本实施例中,存储器204包括操作系统模块2041和应用程序模块2042。
操作系统模块2041包含各种系统程序,用于实现各种基础业务以及处理基于硬件的任务;
应用程序模块2042包含各种应用程序,例如桌面(launcher)、媒体播放器(Media Player)、浏览器(Browser)等,用于实现各种应用业务。
在本发明实施例中,通过调用存储器604存储的程序或指令,处理器601用于:
接收第二终端发送的链路配置请求消息,链路配置请求消息中携带有第二终端的上下文信息,上下文信息中至少包括第二终端的标识ID;
根据链路配置请求消息向网络侧设备发送承载配置请求消息,承载配置请求消息至少包括:无线承载修改请求消息或请求承载资源修改消息,承载配置请求消息中携带有上下文信息,承载配置请求消息用于请求网络侧设备配置业务承载,业务承载用于传输第二终端的业务数据;
接收网络侧设备发送的承载配置完成消息,承载配置完成消息中携带有业务承载ID;
建立业务承载与第二终端之间的映射关系;
在建立映射关系后向第二终端发送链路配置完成消息,以使第二终端利用业务承载,通过第一终端与网络侧设备进行数据传输。
可选地,处理器根据链路配置请求消息向网络侧设备发送承载配置请求消息,具体用于:
根据上下文信息,向第一终端所在的第一基站eNB发送无线承载修改请求消息,以使第一eNB在第一eNB和第一终端之间配置第一无线承载,第一无线承载用于传输第二终端的业务数据。
可选地,处理器根据链路配置请求消息向网络侧设备发送承载配置请求消息,具体用于:
根据上下文信息,向移动管理实体MME发送请求承载资源修改消息,以使MME在第一eNB与服务网关S-GW之间配置第二S1承载,以及,以使MME控制第一eNB在第一eNB与第一终端之间配置第一无线承载,第二S1承载和第一无线承载用于传输第二终端的业务数据。
可选地,处理器建立业务承载与第二终端之间的映射关系,具体用于:
建立所述第一无线承载的ID与所述第二终端的ID的映射关系;或者,建立所述第一无线承载的ID与所述第二终端的ID的映射关系;或者,为所述第二终端分配第二IP地址,并建立所述第一IP地址与所述第二IP地址的映射关系,以及,建立所述第一无线承载的ID与所述第二IP地址的映射关系,所述上下文信息中还包括P-GW为所述第二终端分配的第一IP地址。
可选地,处理器还用于:
在上行方向上,接收第二终端的上行数据,上行数据的源IP地址是第二IP地址;将上行数据的源IP地址替换为第一IP地址;通过与第二IP地址相映射的第一无线承载将IP地址替换后的上行数据发送给第一eNB;
在下行方向上,在与第二IP地址相映射的第一无线承载上,接收第二终端的、使用所述第一IP地址作为目的IP地址的下行数据,下行数据的目的IP地址是第一IP地址;将下行数据的目的IP地址替换为第二IP地址;将IP地址替换后的下行数据发送给第二终端。
本发明实施例还提供一种基站,如图21所示,该基站210包括:至少一个处理器211、至少一个总线212、至少一个通信接口213和至少一个存储器214,其中,
存储器211用于存储计算机执行指令;
处理器211与通信接口213、存储器214通过总线212相连接;
当计算机运行时,处理器211执行存储器214中存储的计算机执行指令,处理器211用于:
接收第一终端发送的无线承载修改请求消息,无线承载修改请求消息中携带有第二终端的上下文信息,上下文信息中至少包括第二终端的标识ID;
根据无线承载修改请求消息,在第一eNB与第一终端之间配置第一无线承载,第一无线承载用于传输第二终端的业务数据;
在第一eNB中存在的S1承载中,查找与第二终端的ID相对应的第一S1承载;
建立第一无线承载与第一S1承载的映射关系;
在建立映射关系后向第一终端发送承载配置完成消息,承载配置完成消息中携带有第一无线承载的ID。
可选地,处理器在第一eNB与第一终端之间配置第一无线承载,具体用于:
将第一eNB与第一终端之间一个已有的无线承载配置为第一无线承载;已有的无线承载用于传输其它第二终端的业务数据;
或者,在第一eNB与第一终端之间建立第一无线承载。
可选地,处理器还具体用于:
当第一eNB的ID与原接入小区ID相同时,根据无线承载修改请求消息,在第一eNB与第一终端之间配置第一无线承载;或者,当第一eNB的ID与原接入小区ID不相同时,向原接入小区ID对应的源eNB发送切换请求消息;当接收到源eNB发送的切换确认消息时,第一eNB根据无线承载修改请求消息,在第一eNB与第一终端之间配置第一无线承载。
可选地,处理器还具体用于:
在下行方向上,通过第一S1承载接收第二终端的下行数据;通过与第一S1承载相映射的第一无线承载,将下行数据发送给第一终端;
在上行方向上,通过第一无线承载接收第一终端的上行数据;通过与第一无线承载相映射的第一S1承载上传上行数据。
可选地,处理器还具体用于:
当第二终端与第一eNB之间存在与第一S1承载相映射的第二无线承载时:
在下行方向上,通过第一S1承载接收第二终端的下行数据;通过与第一S1承载相映射的第二无线承载,将下行数据发送给第二终端;
在上行方向上,在第二无线承载上接收第二终端的上行数据;通过与第二无线承载相映射的第一S1承载上传上行数据。
本发明实施例还提供一种MME,如图22所示,该MME220包括:至少一个处理器221、至少一个总线222、至少一个通信接口223和至少一个存储器224,其中,
存储器221用于存储计算机执行指令;
处理器221与通信接口223、存储器224通过总线222相连接;
当计算机运行时,处理器221执行存储器224中存储的计算机执行指令,处理器221用于:
接收第一终端发送的请求承载资源修改消息,请求承载资源修改消息中携带有第二终端的上下文信息,上下文信息中至少包括第二终端的标识ID;
根据请求承载资源修改消息,在第一eNB与服务网关S-GW之间配置第二S1承载,第二S1承载用于传输第二终端的业务数据;
根据请求承载资源修改消息向第一eNB发送承载资源命令消息,以使第一eNB在第一eNB与第一终端之间配置第一无线承载,第一无线承载用于传输第二终端的业务数据。
可选地,处理器还用于,
为第二终端分配第二S1承载的标识;
向S-GW发送承载资源命令消息,承载资源命令消息中携带有第二S1承载的标识;
接收S-GW发送的创建承载请求消息;
根据创建承载请求消息,向所述第一eNB发送E-RAB修改请求消息;
接收所述第一eNB根据所述E-RAB修改请求消息发送的E-RAB修改承载设置响应消息;
根据E-RAB修改承载设置响应消息,向S-GW发送创建承载响应消息,以在S-GW和第一eNB之间建立第二S1承载。
本说明书中的各个实施例均采用递进的方式描述,各个实施例之间相同相似的部分互相参见即可,每个实施例重点说明的都是与其他实施例的不同之处。尤其,对于装置或系统实施例而言,由于其基本相似于方法实施例,所以描述得比较简单,相关之处参见方法实施例的部分说明即可。以上所描述的装置及系统实施例仅仅是示意性的,其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性劳动的情况下,即可以理解并实施。
需要说明的是,在本文中,诸如“第一”和“第二”等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来,而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上所述仅是本发明的具体实施方式,使本领域技术人员能够理解或实现本发明。对这些实施例的多种修改对本领域的技术人员来说将是显而易见的,本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下,在其它实施例中实现。因此,本发明将不会被限制于本文所示的这些实施例,而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (25)

  1. 一种装置,其特征在于,包括:接收单元、发送单元和处理单元,其中,
    所述接收单元,用于接收第二终端发送的链路配置请求消息,所述链路配置请求消息中携带有所述第二终端的上下文信息,所述上下文信息中至少包括所述第二终端的标识ID;
    所述发送单元,用于根据所述链路配置请求消息向网络侧设备发送承载配置请求消息,所述承载配置请求消息包括:无线承载修改请求消息或请求承载资源修改消息,所述承载配置请求消息中携带有所述上下文信息,所述承载配置请求消息用于请求所述网络侧设备配置业务承载,所述业务承载用于传输所述第二终端的业务数据;
    所述接收单元,还用于接收所述网络侧设备根据所述承载配置请求消息发送的承载配置完成消息,所述承载配置完成消息中携带有所述业务承载ID;
    所述处理单元,用于建立所述业务承载与所述第二终端之间的映射关系;
    所述发送单元,还用于在建立所述映射关系后向所述第二终端发送链路配置完成消息,以使所述第二终端利用所述业务承载,通过所述第一终端与所述网络侧设备进行数据传输。
  2. 根据权利要求1所述的装置,其特征在于,所述发送单元根据所述链路配置请求消息向网络侧设备发送承载配置请求消息,具体用于:
    根据所述上下文信息,向所述第一终端所在的第一基站eNB发送无线承载修改请求消息,以使所述第一eNB在所述第一eNB和所述第一终端之间配置第一无线承载,所述第一无线承载用于传输所述第二终端的业务数据。
  3. 根据权利要求1所述的装置,其特征在于,所述发送单元根据所述链路配置请求消息向网络侧设备发送承载配置请求消息,具体用于:
    根据所述上下文信息向移动管理实体MME发送请求承载资源修改消息,以使所述MME在所述第一eNB与服务网关S-GW之间配置第二S1承载,以及,以使所述MME控制所述第一eNB在所述第一eNB与所述第一终端之间配置第 一无线承载,所述第二S1承载和所述第一无线承载用于传输所述第二终端的业务数据。
  4. 根据权利要求2或3所述的装置,其特征在于,所述处理单元建立所述业务承载与所述第二终端之间的映射关系,具体用于:
    建立所述第一无线承载的ID与所述第二终端的ID的映射关系;
    或者,建立所述第一无线承载的ID与第一IP地址的映射关系,所述上下文信息中还包括数据网关P-GW为所述第二终端分配的第一IP地址;
    或者,为所述第二终端分配第二IP地址;并建立所述第一IP地址与所述第二IP地址的映射关系,以及,建立所述第一无线承载的ID与所述第二IP地址的映射关系,所述上下文信息中还包括数据网关P-GW为所述第二终端分配的第一IP地址。
  5. 根据权利要求1所述的装置,其特征在于,
    所述接收单元,还用于接收所述第二终端使用第二IP地址作为源IP地址发送的上行数据;所述处理单元,还用于将所述上行数据的源IP地址替换为所述第一IP地址;所述发送单元,还用于通过与所述第二IP地址相映射的第一无线承载将所述源IP地址替换后的上行数据发送给所述第一eNB;
    和/或,
    所述接收单元,还用于通过与所述第二IP地址相映射的第一无线承载接收所述第二终端的、使用所述第一IP地址作为目的IP地址的下行数据;所述处理单元,还用于将所述下行数据的目的IP地址替换为所述第二IP地址;所述发送单元,还用于将所述目的IP地址替换后的下行数据发送给所述第二终端。
  6. 根据权利要求1所述的装置,其特征在于,所述上下文信息中还包括:所述第二终端的原接入小区ID,
    所述接收单元,还用于接收所述上下文信息中的所述第二终端的原接入小区ID;
    所述发送单元,还用于将所述第二终端的原接入小区ID发送给所述第一eNB。
  7. 一种装置,其特征在于,包括:接收单元、发送单元和处理单元,其中,
    所述接收单元,用于接收第一终端发送的无线承载修改请求消息,所述无线承载修改请求消息中携带有第二终端的上下文信息,所述上下文信息中至少包括所述第二终端的标识ID;
    所述处理单元,用于根据所述无线承载修改请求消息,在所述第一eNB与所述第一终端之间配置第一无线承载,所述第一无线承载用于传输所述第二终端的业务数据;
    所述处理单元,还用于在所述第一eNB中存在的S1承载中,查找与所述第二终端的ID相对应的第一S1承载;
    所述处理单元,还用于建立所述第一无线承载与所述第一S1承载的映射关系;
    所述发送单元,用于在建立所述映射关系后向所述第一终端发送承载配置完成消息,所述承载配置完成消息中携带有所述第一无线承载的ID。
  8. 根据权利要求7所述的方法,其特征在于,所述处理单元在所述第一eNB与所述第一终端之间配置第一无线承载,具体用于:
    将所述第一eNB与所述第一终端之间一个已有的无线承载配置为所述第一无线承载;所述已有的无线承载用于传输其它第二终端的业务数据;
    或者,在所述第一eNB与所述第一终端之间建立第一无线承载。
  9. 根据权利要求7或8所述的装置,其特征在于,所述方法还包括:
    所述接收单元,还用于接收所述第一终端发送的所述第二终端的原接入小区ID;
    所述处理单元,还用于当所述第一eNB的ID与所述原接入小区ID相同时,根据所述无线承载修改请求消息,在所述第一eNB与所述第一终端之间配置第一无线承载;
    所述发送单元还用于,当所述第一eNB的ID与所述原接入小区ID不相同时,向与所述原接入小区ID相对应的源eNB发送切换请求消息;
    所述接收单元,还用于接收所述源eNB发送的切换确认消息;
    所述处理单元,还用于当接收到所述切换确认消息时,根据所述无线承 载修改请求消息,在所述第一eNB与所述第一终端之间配置第一无线承载。
  10. 根据权利要求7所述的装置,其特征在于,
    所述接收单元,还用于通过所述第一S1承载接收所述第二终端的下行数据;所述发送单元,还用于通过与所述第一S1承载相映射的所述第一无线承载,将所述下行数据发送给所述第一终端,以使所述第一终端将所述下行数据转发给所述第二终端;
    和/或,
    所述接收单元,还用于通过所述第一无线承载接收所述第二终端的上行数据;所述发送单元,还用于通过与所述第一无线承载相映射的所述第一S1承载上传所述上行数据。
  11. 一种装置,其特征在于,包括:发送单元、接收单元和处理单元,其中,
    所述接收单元,用于接收第一终端发送的请求承载资源修改消息,所述请求承载资源修改消息中携带有所述第二终端的上下文信息,所述上下文信息中至少包括所述第二终端的标识ID;
    所述处理单元,用于根据所述请求承载资源修改消息,在所述第一eNB与服务网关S-GW之间配置第二S1承载,所述第二S1承载用于传输所述第二终端的业务数据;
    所述发送单元,用于根据所述请求承载资源修改消息向所述第一eNB发送承载资源命令消息,以使所述第一eNB在所述第一eNB与所述第一终端之间配置第一无线承载,所述第一无线承载用于传输所述第二终端的业务数据。
  12. 根据权利要求11所述的装置,其特征在于,
    所述处理单元,还用于为所述第二终端分配所述第二S1承载的标识;
    所述发送单元,还用于向所述S-GW发送承载资源命令消息,所述承载资源命令消息中携带有所述第二S1承载的标识;
    所述接收单元,还用于接收所述S-GW发送的创建承载请求消息;
    所述发送单元,还用于根据所述创建承载请求消息,向所述第一eNB发 送E-RAB修改请求消息;
    所述接收单元,还用于接收所述第一eNB根据所述E-RAB修改请求消息发送的E-RAB修改承载设置响应消息;
    所述发送单元,还用于根据所述E-RAB修改承载设置响应消息,向所述S-GW发送创建承载响应消息,以在S-GW和所述第一eNB之间建立所述第二S1承载。
  13. 一种连接控制方法,其特征在于,所述方法包括:
    第一终端接收第二终端发送的链路配置请求消息,所述链路配置请求消息中携带有所述第二终端的上下文信息,所述上下文信息中至少包括所述第二终端的标识ID;
    所述第一终端根据所述链路配置请求消息向网络侧设备发送承载配置请求消息,所述承载配置请求消息至少包括:无线承载修改请求消息或请求承载资源修改消息,所述承载配置请求消息中携带有所述上下文信息,所述承载配置请求消息用于请求所述网络侧设备配置业务承载,所述业务承载用于传输所述第二终端的业务数据;
    所述第一终端接收所述网络侧设备根据所述承载配置请求消息发送的承载配置完成消息,所述承载配置完成消息中携带有所述业务承载ID;
    所述第一终端建立所述业务承载与所述第二终端之间的映射关系;
    所述第一终端在建立所述映射关系后向所述第二终端发送链路配置完成消息,以使所述第二终端利用所述业务承载,通过所述第一终端与所述网络侧设备进行数据传输。
  14. 根据权利要求13所述的方法,其特征在于,所述第一终端根据所述链路配置请求消息向网络侧设备发送承载配置请求消息,包括:
    所述第一终端根据所述上下文信息,向所述第一终端所在的第一基站eNB发送无线承载修改请求消息,以使所述第一eNB在所述第一eNB和所述第一终端之间配置第一无线承载,所述第一无线承载用于传输所述第二终端的业务数据。
  15. 根据权利要求13所述的方法,其特征在于,所述第一终端根据所 述链路配置请求消息向网络侧设备发送承载配置请求消息,包括:
    所述第一终端根据所述上下文信息,向移动管理实体MME发送请求承载资源修改消息,以使所述MME在所述第一eNB与服务网关S-GW之间配置第二S1承载,以及,以使所述MME控制所述第一eNB在所述第一eNB与所述第一终端之间配置第一无线承载,所述第二S1承载和所述第一无线承载用于传输所述第二终端的业务数据。
  16. 根据权利要求14或15所述的方法,其特征在于,所述第一终端建立所述业务承载与所述第二终端之间的映射关系,包括:
    所述第一终端建立所述第一无线承载的ID与所述第二终端的ID的映射关系;
    或者,所述第一终端建立所述第一无线承载的ID与第一IP地址的映射关系,所述上下文信息中还包括数据网关P-GW为所述第二终端分配的第一IP地址;
    或者,所述第一终端为所述第二终端分配第二IP地址,并建立所述第一IP地址与所述第二IP地址的映射关系,以及,建立所述第一无线承载的ID与所述第二IP地址的映射关系,所述上下文信息中还包括P-GW为所述第二终端分配的第一IP地址。
  17. 根据权利要求16所述的方法,其特征在于,所述方法还包括:
    所述第一终端接收所述第二终端使用第二IP地址作为源IP地址发送的上行数据;所述第一终端将所述上行数据的源IP地址替换为所述第一IP地址;所述第一终端通过与所述第二IP地址相映射的第一无线承载将所述源IP地址替换后的上行数据发送给所述第一eNB;
    和/或,
    所述第一终端通过与所述第二IP地址相映射的第一无线承载接收所述第二终端的、使用所述第一IP地址作为目的IP地址的下行数据;所述第一终端将所述下行数据的目的IP地址替换为所述第二IP地址;所述第一终端将所述目的IP地址替换后的下行数据发送给所述第二终端。
  18. 根据权利要求13所述的方法,其特征在于,所述上下文信息中还包括:所述第二终端的原接入小区ID,所述方法还包括:
    所述第一终端接收所述上下文信息中的所述第二终端的原接入小区ID;
    所述第一终端将所述第二终端的原接入小区ID发送给所述第一eNB。
  19. 一种连接控制方法,其特征在于,所述方法包括:
    第一基站eNB接收第一终端发送的无线承载修改请求消息,所述无线承载修改请求消息中携带有第二终端的上下文信息,所述上下文信息中至少包括所述第二终端的标识ID;
    所述第一eNB根据所述无线承载修改请求消息,在所述第一eNB与所述第一终端之间配置第一无线承载,所述第一无线承载用于传输所述第二终端的业务数据;
    所述第一eNB在所述第一eNB中存在的S1承载中,查找与所述第二终端的ID相对应的第一S1承载;
    所述第一eNB建立所述第一无线承载与所述第一S1承载的映射关系;
    所述第一eNB在建立所述映射关系后向所述第一终端发送承载配置完成消息,所述承载配置完成消息中携带有所述第一无线承载的ID。
  20. 根据权利要求19所述的方法,其特征在于,所述第一eNB在所述第一eNB与所述第一终端之间配置第一无线承载,包括:
    所述第一eNB将所述第一eNB与所述第一终端之间一个已有的无线承载配置为所述第一无线承载;所述已有的无线承载用于传输其它第二终端的业务数据;
    或者,所述第一eNB在所述第一eNB与所述第一终端之间建立第一无线承载。
  21. 根据权利要求19或20所述的方法,其特征在于,所述方法还包括:
    接收所述第一终端发送的所述第二终端的原接入小区ID;
    当所述第一eNB的ID与所述原接入小区ID相同时,所述第一eNB根据所述无线承载修改请求消息,在所述第一eNB与所述第一终端之间配置第一无线承载;
    或者,当所述第一eNB的ID与所述原接入小区ID不相同时,第一eNB向所述原接入小区ID对应的源eNB发送切换请求消息;当接收到所述源eNB发送的切换确认消息时,所述第一eNB根据所述无线承载修改请求消息,在 所述第一eNB与所述第一终端之间配置第一无线承载。
  22. 根据权利要求19所述的方法,其特征在于,所述方法还包括:
    所述第一eNB通过所述第一S1承载接收所述第二终端的下行数据;所述第一eNB通过与所述第一S1承载相映射的所述第一无线承载,将所述下行数据发送给所述第一终端;
    和/或,
    所述第一eNB通过所述第一无线承载接收所述第一终端的上行数据;所述第一eNB通过与所述第一无线承载相映射的所述第一S1承载上传所述上行数据。
  23. 根据权利要求19所述的方法,其特征在于,所述方法还包括:
    当所述第二终端与所述第一eNB之间存在与所述第一S1承载相映射的第二无线承载时:
    所述第一eNB通过所述第一S1承载接收所述第二终端的下行数据;所述第一eNB通过与所述第一S1承载相映射的所述第二无线承载,将所述下行数据发送给所述第二终端;
    和/或,
    所述第一eNB通过所述第二无线承载接收所述第二终端的上行数据;所述第一eNB通过与所述第二无线承载相映射的所述第一S1承载上传所述上行数据。
  24. 一种连接控制方法,其特征在于,所述方法包括:
    移动管理实体MME接收第一终端发送的请求承载资源修改消息,所述请求承载资源修改消息中携带有所述第二终端的上下文信息,所述上下文信息中至少包括所述第二终端的标识ID;
    所述MME根据所述请求承载资源修改消息,在所述第一eNB与服务网关S-GW之间配置第二S1承载,所述第二S1承载用于传输所述第二终端的业务数据;
    所述MME根据所述请求承载资源修改消息向所述第一eNB发送承载资源命令消息,以使所述第一eNB在所述第一eNB与所述第一终端之间配置第一 无线承载,所述第一无线承载用于传输所述第二终端的业务数据。
  25. 根据权利要求24所述的方法,其特征在于,所述在所述第一eNB与S-GW之间配置第二S1承载,包括:
    所述MME为所述第二终端分配所述第二S1承载的标识;
    所述MME向所述S-GW发送承载资源命令消息,所述承载资源命令消息中携带有所述第二S1承载的标识;
    所述MME接收所述S-GW发送的创建承载请求消息;
    所述MME根据所述创建承载请求消息,向所述第一eNB发送演进的无线接入承载E-RAB修改请求消息;
    所述MME接收所述第一eNB根据所述E-RAB修改请求消息发送的E-RAB修改承载设置响应消息;
    所述MME根据所述E-RAB修改承载设置响应消息,向所述S-GW发送创建承载响应消息,以在S-GW和所述第一eNB之间建立所述第二S1承载。
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EP3322253B1 (en) 2020-12-23
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