WO2012151945A1 - 一种维持大量连接的方法、用户设备及*** - Google Patents

一种维持大量连接的方法、用户设备及*** Download PDF

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Publication number
WO2012151945A1
WO2012151945A1 PCT/CN2011/082765 CN2011082765W WO2012151945A1 WO 2012151945 A1 WO2012151945 A1 WO 2012151945A1 CN 2011082765 W CN2011082765 W CN 2011082765W WO 2012151945 A1 WO2012151945 A1 WO 2012151945A1
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WO
WIPO (PCT)
Prior art keywords
network device
network
bearer
information
context information
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Application number
PCT/CN2011/082765
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English (en)
French (fr)
Inventor
许辉
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP11865423.5A priority Critical patent/EP2717645A4/en
Priority to US14/004,721 priority patent/US9363834B2/en
Publication of WO2012151945A1 publication Critical patent/WO2012151945A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup

Definitions

  • the present invention relates to a machine to machine (M2M) technology, and more particularly to a method for maintaining a large number of connections, a User Equipment (UE) and a system.
  • M2M machine to machine
  • UE User Equipment
  • M2M technology refers to: All the techniques and means of establishing a connection between machines. In the 1990s, the concept of M2M emerged, but only in the theoretical stage. After 2000, with the development of mobile communication technology, it is possible to realize the networking between machines through mobile communication technology. Around 2002, M2M business appeared in the market, and it developed rapidly in the following years, becoming the focus of many communication equipment vendors and telecom operators. Moreover, at present, the number of machines in the world is much larger than the number of people, so it is foreseeable that M2M technology has a good market prospect.
  • the existing mobile communication network is mainly designed for human-to-human communication, and the communication between the machine and the machine, the person and the machine is insufficiently optimized, the M2M service proposes a lot to the existing mobile communication system.
  • New requirements in order to enhance the competitiveness of mobile networks in this area, it is necessary to optimize the existing mobile network to more effectively support M2M communication.
  • how operators can provide M2M communication services at low cost is also the key to successful M2M communication deployment.
  • the solution should maximize the use of existing networks and reduce the impact of a large number of M2M communications on the network, as well as the complexity of operation and maintenance.
  • MTC Machine Type Communication
  • H2H human to Human
  • QoS quality of service
  • business models are very different from existing H2H communication modes.
  • FIG. 1 shows the architecture of the 3GPP Evolved Packet System (EPS).
  • the EPS includes: Radio Access Network (RAN) and core network.
  • the radio access network may specifically be: a universal mobile communication system (UTRAN, UMTS Terrestrial Radio Access Network), an evolved UTRAN (E-UTRAN, Evolved UTRAN), a GSM/EDGE radio access network (GERAN) GSM/EDGE Radio Access Network), etc.; in E-UTRAN, including: evolved Node B (eNB, evolved Node B); for the composition of the core network, in Evolved Packet Core (EPC) That is:
  • the core network includes: a mobility management entity (MME, Mobility Management Entity), a serving gateway (S-GW, Serving Gate Way), and a packet data network gateway (P-GW, PDN).
  • MME mobility management entity
  • S-GW Serving Gate Way
  • P-GW Packet Radio Service
  • the MTC system should provide a mechanism to effectively maintain the connection of a large number of MTC devices. Therefore, the following three factors need to be considered: 1. Effectiveness; Maintain connectivity; 3. A large number of MTC devices.
  • FIG. 2 is a schematic diagram of the architecture of the MTC system in the 3GPP.
  • the UE, the RAN, the GGSN, and the gateway GPRS support node need to be maintained all the time.
  • Support Node /P-GW / Link between EPLG, evolved Packet Data Gateway, and MTC Server.
  • the dotted line "" indicates the connection of the control plane
  • the solid line indicates the connection of the user plane.
  • LTE Long Term Evolution
  • the network device needs to maintain its context information and other related information. If a large number of devices are in this state, a large amount of context information must be maintained, which will occupy a large amount of network resources. At present, there is no technical solution for how to effectively manage and minimize the occupation of network resources.
  • the radio link bearer or detach may be released to reduce the occupation of the radio resource.
  • the radio bearer when data needs to be sent, There are no technical solutions to quickly re-establish wireless connectivity. Summary of the invention
  • the present invention provides a method of maintaining a large number of connections, the method comprising:
  • the network device When there is no data transmission between the UE and the network, the network device deletes the radio bearer, and retains the context information and the default bearer of the UE related to the restoration link;
  • the network device When data needs to be transmitted between the UE and the network, the network device establishes a bearer connection with the UE according to the retained context information of the UE related to the restoration link.
  • the method when the time interval of no data transmission between the UE and the network is less than or equal to a preset threshold, the method further includes:
  • the network device further retains the cable bearer
  • the wired bearer includes: an S1 bearer, an S5/8 bearer, and an SGi bearer.
  • the method further includes:
  • the network device retains the radio bearer and retains all context information and the wired bearer of the UE.
  • the wired bearer includes: an S1 bearer, an S5/8 bearer, and an SGi bearer.
  • the plurality of connections are two or more connections.
  • the present invention further provides a method for maintaining a large number of connections, the method comprising: when there is no data transmission between the UE and the network, the network device deletes the radio bearer, and retains the context information and the default bearer of the UE related to the restoration link;
  • the method further includes:
  • the network device When the MTC Server needs to send data to a batch of the UE, the network device sends a trigger information to the UE to establish a connection with all the UEs.
  • the sending, by the network device, the trigger information to the UE, establishing and The connection between all the UEs is:
  • the MTC Server sends a trigger message to the network device.
  • the network device forwards the received trigger information, and then sends the trigger information to the UE corresponding to the received trigger information.
  • the UE After receiving the trigger information, the UE initiates an attach process to establish a connection with the network side.
  • the method when the network device forwards the received trigger information, the method further includes:
  • the network device converts the UE identifier in the received trigger information into an International Mobile Subscriber Identifier (IMSI).
  • IMSI International Mobile Subscriber Identifier
  • the present invention further provides a network device for maintaining a large number of connections, the network device comprising: a deleting unit and a restoring unit;
  • a deleting unit configured to: when there is no data transmission between the UE and the network, delete the radio bearer, and retain the context information and the default bearer of the UE related to the restoration link;
  • a recovery unit configured to establish, when the UE and the network need to transmit data, a bearer connection with the UE according to the retained context information of the UE related to the recovery link.
  • the present invention also provides a network device for maintaining a large number of connections, the network device comprising: a deleting unit, and a transmitting unit;
  • a deleting unit configured to: when there is no data transmission between the UE and the network, delete the radio bearer, and retain the context information and the default bearer of the UE related to the restoration link;
  • the forwarding unit is configured to: after the network device fails or is powered off, lose all context information of the reserved UE and delete all the bearers, or, because the information of the large number of UEs is not detected within the specified duration, the network device initiates the detach process. After deleting all the context information of the UE and all the bearers, and when the MTC Server needs to send data to the batch of the UE, forward the received trigger information to the UE, and establish an MTC Server and all the UEs. Connection.
  • the present invention further provides a user equipment for maintaining a large number of connections, the user equipment comprising: a receiving module and a processing module;
  • a receiving module configured to receive trigger information, and send the received trigger information to the processing module
  • the processing module is configured to: after receiving the trigger information sent by the receiving module, initiate an attach process to establish a connection with the network side.
  • the present invention also provides a system for maintaining a large number of connections, the system comprising: a network device, configured to delete a radio bearer when there is no data transmission between the UE and the network, and retain context information of the UE related to the recovery link When the data needs to be transmitted between the UE and the network, the bearer connection with the UE is established according to the retained context information of the UE related to the restoration link.
  • the network device is further configured to reserve a wired bearer when the time interval between the UE and the network for no data transmission is less than or equal to a preset threshold.
  • the network device is further configured to reserve a radio bearer when the UE needs to transmit data, or according to the subscription attribute, or according to the operator policy, and the UE needs to maintain the connection between the UE and the network. All context information and cable bearers of the UE are reserved.
  • the present invention also provides a system for maintaining a large number of connections, the system comprising: a network device, an MTC Server, and a UE;
  • a network device configured to: when there is no data transmission between the UE and the network, delete the radio bearer, and retain the context information and the default bearer of the UE related to the recovery link;
  • the MTC server is configured to: after the network device fails or is powered off, lose all the context information of the reserved UE and delete all the bearers, or, because the information of a large number of UEs is not detected within the specified duration, the network device initiates the detach process. After deleting all the context information of the UE and all the bearers, and sending data to the batch of UEs, sending the trigger information to the UE through the network device, and establishing a connection with all the UEs;
  • the UE is configured to: after receiving the trigger information sent by the MTC Server through the network device, The connection to the MTC Server.
  • the MTC server is specifically configured to: send a trigger message to the network device, where the network device is specifically configured to: after receiving the trigger information sent by the MTC server, forward the received trigger information, and The UE sends the trigger information;
  • the UE is specifically configured to: after receiving the trigger information sent by the network device, initiate an attach process to establish a connection with the network side.
  • the network device when the network device forwards the received trigger information, the network device further converts the UE identifier in the received trigger information into IMSI.
  • the number of the UEs is two or more.
  • the method and system for maintaining a large number of connections enter a suspended state when there is no data transmission between the UE and the network, that is, the network device deletes the radio bearer, and retains the context information and default of the UE related to the restoration link.
  • the network enters a recovery state, that is, the network device establishes a bearer connection with the UE according to the retained context information of the UE related to the restoration link; thus, the UE can be effectively maintained. Connection.
  • the network device deletes the radio bearer when there is no data transmission between the UE and the network, and retains the context information and the default bearer of the UE related to the recovery link, so that the storage space can be effectively saved, thereby effectively reducing the network load;
  • the context information of the UE related to the recovery link is reserved, and the bearer connection with the UE is established, so that the connection recovery speed can be improved.
  • the network device After the network device fails or is powered off, all the context information of the reserved UE is lost and all bearers are deleted. Or, because the information of a large number of UEs is not detected within the specified duration, the network device initiates a detach process and deletes a large number of UEs. After all the context information and all bearers, and when the MTC Server needs to send data to a batch of UEs, the device sends the trigger information to the UE through the network device, establishing a connection with all the UEs, so that a large number of UEs can be quickly Access to the network.
  • FIG. 1 is a schematic structural diagram of a 3GPP EPS in the prior art
  • FIG. 2 is a schematic structural diagram of a 3GPP MTC system in the prior art
  • FIG. 3 is a schematic flow chart of a method for maintaining a large number of connections according to the present invention.
  • Embodiment 4 is a schematic flow chart of a method for maintaining a large number of connections in Embodiment 1;
  • FIG. 5 is a schematic flowchart of a method for maintaining a large number of connections in Embodiment 2;
  • FIG. 6 is a schematic flow chart of a method for maintaining a large number of connections in Embodiment 3;
  • FIG. 7 is a schematic structural diagram of a system for maintaining a large number of connections according to the present invention. detailed description
  • the UE is a UE having the characteristics of the MTC device.
  • the UE described in the present invention may specifically be a device used by a user described in various mobile communication technologies, such as a UE in the LTE UTRA, 2G/. Mobile stations (MS, Mobile Station) in 3G/GREAN.
  • the number of machines is much larger than the number of people, for example, two orders of magnitude or more.
  • a large number of connections refers to more than one connection, that is, a large number of connections are two or more connections.
  • the method for maintaining a large number of connections in the present invention includes the following steps:
  • Step 301 When there is no data transmission between the UE and the network, entering a suspended state;
  • the no data transmission refers to: the UE sends, and/or receives the data end, or the network device sends, and/or receives the data end; if the UE sends, and/or receives the data, the network device needs to be notified. Correspondingly, if the network device sends, and/or receives data, it needs to inform the UE.
  • the entering the suspended state is specifically:
  • the network device deletes the radio bearer and retains the context information and default bearer of the UE related to the recovery link.
  • the network device may include: all devices required for data transmission between the UE and the MTC Server, such as: RAN device, MME/SGSN, S-GW/P-GW, (HSS, Home Subscriber Server) / The home location register (HLR, Home Location Register), MTC Interworking Function (MTC Interworking Function), and the service center (SC, Service Center), etc.
  • the RAN device may specifically be an eNB;
  • the network device will be different.
  • the network device may be a network device that constitutes a 3GPP network.
  • the network device specifically includes which devices are not of interest to the present invention.
  • the context information of the UE includes: IMSI, International Mobile Equipment Identity (IMEI), subscription information, Mobility management state, global unique temporary identifier (GUTI, Globally Unique) Temporary Identity ), Tracking area list, Last visited tracking area ID, DRX parameters, Discontinuous Reception parameters, Security parameters, and so on.
  • the context information of the UE may be stored in one or more network devices, and the context information of the UE related to the recovery link is determined by the operator according to the service requirement, the MTC characteristic of the UE, and the policy, and the context information of the UE is determined.
  • the context information of the UE associated with the recovery link is determined by the context information of the UE related to the recovery link.
  • the default bearer is the bearer on the S5/8 interface, that is, the bearer between the S-GW and the P-GW.
  • the default bearer is established.
  • the method may further include:
  • the network device further retains the cable bearer.
  • the threshold can be set as needed.
  • the wired bearer includes: an S1 bearer, an S5/8 bearer, and an SGi bearer.
  • the transmission data refers to: the UE sends, and/or receives data, or the network device sends, and/or receives data; if the network device sends data, a trigger process may be required.
  • the entering the recovery state is specifically:
  • the network device establishes a bearer connection with the UE according to the retained context information of the UE related to the restoration link.
  • the specific process of establishing a radio bearer with the UE may be performed according to the retained context information of the UE related to the recovery link.
  • the radio bearer may include: an air interface bearer.
  • the method may further include: the network device reserves the radio bearer, and reserves the UE. All contextual information and wired bearers.
  • the wired bearer includes: an S1 bearer, an S5/8 bearer, and an SGi bearer.
  • the present invention also provides a method of maintaining a large number of connections, the method comprising:
  • the network device When there is no data transmission between the UE and the network, the network device deletes the radio bearer, and retains the context information and the default bearer of the UE related to the restoration link;
  • the network device After the network device fails or is powered off, all the context information of the reserved UE is lost and all bearers are deleted. Or, because the information of a large number of UEs is not detected within the specified duration, the network device initiates a detach process and deletes a large number of UEs. After all the context information and all bearers, and when the MTC Server needs to send data to a batch of the UE, the device sends the trigger information to the UE through the network device, and establishes a connection with all the UEs;
  • the MTC Server sends a trigger information to the network device.
  • the network device forwards the received trigger information, and then sends the trigger information to the UE corresponding to the received trigger information.
  • the UE After receiving the trigger information, the UE initiates an attach procedure and establishes a connection with the network side.
  • the trigger information sent by the MTC Server to the network device is: including information for multiple UEs in one piece of trigger information;
  • the method may further include:
  • the network device converts the UE identifier in the received trigger information into IMSI, so that the network device can send the trigger information to the UE.
  • the UE is a UE with time control characteristics, that is, the network device has specified when the UE can communicate with the network device.
  • the method for maintaining a large number of connections in this embodiment, as shown in FIG. 4, includes the following steps:
  • Step 401 Stop sending data between the UE and the MTC Server.
  • the reason for stopping the transmission of data may be: Grant Time Interval timeout, Forbidden Time Interval, or data transmission in the Grant Time Interval or Communication Window.
  • the UE If the UE stops sending or receiving data, the UE sends the indication information to the network device; if the MTC Server stops sending or receiving data, the MTC Server sends the indication information to the UE by using the network device; where the indication information may include: Time information of the data.
  • Step 402 The network device deletes the radio bearer, saves or deletes the context information of the UE and the subscription information in the UE information, and then performs step 403;
  • the specific processing procedure for the network device to delete the radio bearer may adopt the prior art.
  • each network device determines to save or delete the context information of the UE and the subscription information in the UE information, specifically, if the UE is currently in the Grant Time Interval or the Communication Window, or If the Forbidden Time Interval is less than or equal to the preset threshold, all network devices are reserved.
  • the network device of the context information retains the context information of the UE related to the recovery link, and the network device that does not store the context information of the UE related to the recovery link deletes the context information of the UE, and deletes the subscription information;
  • the threshold value is set, for example, it can be set to lOmin, etc.; the network device knows the state of the UE in advance, so that it can learn whether the UE is currently in the Grant Time Interval or the Communication Window, and learn the Forbidden Time Interval of the UE.
  • the context information of the UE may be stored in the eNB, and/or the MME; that is, the network device includes: an eNB, an MME; the UE information refers to: the identity information and the subscription information of the UE, specifically including: IMSI, IMEL subscription information And QoS, etc., UE information is stored in the HSS/HLR.
  • Step 403 The network device reserves the default bearer, and then performs step 404.
  • the network device retains the default bearer, and the dedicated bearer may be deleted.
  • the dedicated bearer refers to the bearer for transmitting data except the default bearer; the MME/SGSN may initiate the delete dedicated bearer process, and the specific processing procedure Existing technology can be employed.
  • Step 404 Prepare to transmit data between the network device and the UE, and then perform step 405.
  • the transmission data may be initiated by the UE or the network device. If the network device initiates, the trigger process may be required to request the UE to establish a connection.
  • the specific process for the network device to initiate the transmission of the data may be the prior art. For the specific implementation of the trigger process, refer to the third embodiment.
  • Step 405 The network device retains context information of the UE related to the restoration link, Restore the bearer connection with the UE, start sending data, and end the current processing flow.
  • the bearer includes: an air interface bearer, an S1 bearer, and an SGi bearer; and further includes: a dedicated bearer.
  • the UE is a UE that performs data transmission with the network device after a long time interval, that is, the time interval is greater than the set threshold.
  • the method for maintaining a large number of connections in this embodiment, as shown in FIG. 5, includes the following steps:
  • Step 501 Stop sending data between the UE and the MTC Server.
  • the UE If the UE stops transmitting or receiving data, the UE sends indication information to the network; or, if the MTC Server stops transmitting or receiving data, the MTC Server sends indication information to the UE; the foregoing indication information may include time information for preparing to send data next time.
  • Step 502 The network device deletes the radio bearer, and saves or deletes the context information and the UE information of the UE.
  • the specific processing procedure for the network device to delete the radio bearer may adopt the prior art.
  • each network device determines, according to the needs, the context information of the UE to save or delete, and the subscription information in the UE information, specifically, the network that stores the context information of the UE related to the restoration link.
  • the device retains context information of the UE related to the restoration link, and the network device that does not store the context information of the UE related to the restoration link deletes the context information of the UE, and deletes the subscription information.
  • the context information of the UE may be stored in the eNB, and/or the MME; that is, the network device includes: an eNB, an MME; and the UE information is stored in the HSS/HLR.
  • Step 503 The network device retains the default bearer, and then step 504 is performed;
  • the network device retains the default bearer, and the dedicated bearer can be deleted.
  • the dedicated bearer refers to the bearer for transmitting data except the default bearer.
  • the MME/SGSN can initiate the deletion of the dedicated bearer process. The specific process can adopt the prior art.
  • Step 504 Prepare to transmit data between the network device and the UE.
  • the transmission data may be initiated by the UE or the network side. If the network device initiates, the trigger process may be required to request the UE to establish a connection.
  • the specific processing of the network device to initiate data transmission may be performed by using a prior art, and the trigger process is specific.
  • the implementation can refer to the third embodiment.
  • Step 505 The network device maintains the context information of the UE related to the restoration link, restores the bearer connection with the UE, starts to send data, and ends the current processing flow.
  • the bearer includes: an air interface bearer, an S1 bearer, and an SGi bearer; and further includes: a dedicated bearer.
  • the application scenario of this embodiment is: after the network device fails or is powered off, all the context information of the reserved UE is lost and all the bearers are deleted, or the network device is initiated because the information of a large number of UEs is not detected within the specified duration.
  • the detach process deletes all context information and all bearers of a large number of UEs; the MTC Server needs to send data to these not attached UEs.
  • the network device is a network device in the 3GPP network; the detach process can be displayed or implicitly performed, and the specific processing procedure of the detach process is prior art.
  • the method for maintaining a large number of connections in this embodiment, as shown in FIG. 6, includes the following steps:
  • Step 601 The MTC Server prepares to send data to the not attached UE, and then performs step 602;
  • Step 602 The MTC Server sends a trigger information to the MTC IWF.
  • the trigger information includes trigger information for a plurality of UEs.
  • Step 603 After receiving the trigger information, the MTC IWF forwards the trigger information to the MME/SGSN registered by the UE in the trigger information.
  • the MTC IWF converts the UE identifier in the trigger information into an IMSI, and then forwards the trigger information to the MME/SGSN registered by the UE in the trigger information.
  • the MTC IWF saves the IMSI of the UE in advance, or The MTC IWF obtains the IMSI of the UE through the HSS/HLR request, so that the UE identity in the trigger information can be converted into the IMSL accordingly.
  • the MTC IWF can query the information of the UE through the HSS/HLR to obtain the corresponding MME/SGSN, so as to forward the trigger information to the corresponding MME/SGSN.
  • the MTC IWF sends the trigger information to the MME/SGSN. If the UE in the trigger information is registered on multiple MME/SGSNs, the MTC IWF registers with multiple The MME/SGSN sends a trigger message to step 604: after receiving the trigger information, the MME/SGSN forwards the trigger information to the eNB corresponding to the UE in the trigger information.
  • Step 605 After receiving the trigger information, the eNB sends the trigger information to the UE.
  • the bearer includes: an air interface bearer, an S1 bearer, and an SGi bearer, and may further include: a dedicated bearer.
  • Step 607 The MTC Server sends data to the UE.
  • a network device that maintains a large number of connections is characterized in that: the network device includes: a deleting unit and a restoring unit;
  • a deleting unit configured to: when there is no data transmission between the UE and the network, delete the radio bearer, and retain the context information and the default bearer of the UE related to the restoration link;
  • Recovery unit used to reserve and recover when data needs to be transmitted between the UE and the network
  • the context information of the link-related UE establishes a bearer connection with the UE.
  • the deleting unit is further configured to further reserve the wired bearer when the time interval of no data transmission between the UE and the network is less than or equal to a preset threshold.
  • the wired bearer includes: an S1 bearer, an S5/8 bearer, and an SGi bearer.
  • the deleting unit is further configured to reserve a radio bearer when the UE and the network need to transmit data all the time, or according to the subscription attribute of the UE, or according to the operator policy, and keep the connection between the UE and the network. All context information and wired bearers of the UE.
  • the wired bearer includes: an S1 bearer, an S5/8 bearer, and an SGi bearer.
  • the present invention further provides a system for maintaining a large number of connections, the system comprising: a network device, configured to delete a radio bearer when the UE and the network have no data transmission, and reserve a UE related to the recovery link.
  • the context information and the default bearer and when the UE needs to transmit data between the network and the network, establish a connection with the UE according to the retained context information of the UE related to the restoration link.
  • the UE is a UE having an MTC device characteristic, and the number of the UEs may be two or more.
  • the network device is further configured to: when the time interval between the UE and the network for no data transmission is less than or equal to a preset threshold, further retaining the wired bearer.
  • the network device is further configured to reserve the radio bearer and retain all the UEs when the UE needs to transmit data, or according to the subscription attribute, or according to the operator policy, and needs to maintain the connection between the UE and the network.
  • Context information and cable bearers are further configured to reserve the radio bearer and retain all the UEs when the UE needs to transmit data, or according to the subscription attribute, or according to the operator policy, and needs to maintain the connection between the UE and the network.
  • the network device may include: all devices required for data transmission between the UE and the MTC Server, such as: RAN device, MME/SGSN, S-GW/P-GW, HSS/HLR
  • the RAN device may be an eNB.
  • the network device may be different according to the deployed network.
  • the network device may be a network device that constitutes a 3GPP network. Network equipment specifically includes Which devices are not of interest to the present invention.
  • the context information of the UE includes: IMSL IMEL subscription information, Mobility management state, GUTL Tracking area list, Last visited tracking area ID, DRX parameters, Security parameters, and the like.
  • the context information of the UE may be saved in one or more network devices, and the context information of the UE related to the recovery link is determined by the operator according to the service requirement, the MTC feature of the UE, and the policy, and the context information of the UE is determined. Context information of the UE associated with the recovery link.
  • the present invention also provides a network device for maintaining a large number of connections, the network device comprising: a deleting unit, and a transmitting unit;
  • a deleting unit configured to: when there is no data transmission between the UE and the network, delete the radio bearer, and retain the context information and the default bearer of the UE related to the restoration link;
  • the forwarding unit is configured to: after the network device fails or is powered off, lose all context information of the reserved UE and delete all the bearers, or, because the information of the large number of UEs is not detected within the specified duration, the network device initiates the detach process. After deleting all the context information of the UE and all the bearers, and when the MTC Server needs to send data to the batch of the UE, forward the received trigger information to the UE, and establish an MTC Server and all the UEs. Connection.
  • the present invention further provides a system for maintaining a large number of connections.
  • the system includes: a network device 71, an MTC Server 72, and a UE 73; wherein, the network device 71 is configured to be a UE.
  • the radio bearer is deleted, and the context information and the default bearer of the UE related to the restoration link are reserved;
  • the MTC Server 72 is configured to: after the network device fails or is powered off, lose all context information of the reserved UE and delete all the bearers, or, because the information of a large number of UEs is not detected within the specified duration, the network device 71 initiates The detach process, after deleting all the context information of all the UEs and all the bearers, and sending data to a batch of not attached UEs, sending the trigger information to the UE 73 through the network device 71 to establish a connection with all the UEs 73;
  • the UE 73 is configured to receive the trigger information sent by the MTC server 72 through the network device 71. After that, establish a connection with the MTC Server.
  • the UE is a UE having an MTC device characteristic, and the number of the UEs is two or more.
  • the MTC server 72 is specifically configured to: send a trigger message to the network device 71, where the network device 71 is specifically configured to: after receiving the trigger information sent by the MTC server 72, forward the received trigger information, And sending the trigger information to the UE 73.
  • the UE 73 is specifically configured to: after receiving the trigger information sent by the network device 71, initiate an attach procedure to establish a connection with the network side.
  • the network device 71 is further configured to convert the UE identifier in the received trigger information into IMSI when performing the forwarding process on the received trigger information.
  • the present invention also provides a user equipment for maintaining a large number of connections, the user equipment comprising: a receiving module and a processing module;
  • a receiving module configured to receive trigger information, and send the received trigger information to the processing module
  • the processing module is configured to: after receiving the trigger information sent by the receiving module, initiate an attach process to establish a connection with the network side.
  • the receiving module is further configured to receive data.
  • the user equipment may further include: a sending module, configured to send data.

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Abstract

本发明公开了一种维持大量连接的方法,该方法包括:当用户设备(UE)与网络之间无数据传输时,网络设备删除无线承载,保留与恢复链路相关的UE的上下文信息及缺省承载;当UE与网络之间需要传输数据时,网络设备依据保留的与恢复链路相关的UE的上下文信息,建立与UE的承载连接。本发明同时公开了一种维持大量连接的用户设备及***,采用本发明的方法、用户设备及***,能有效地维持大量UE的连接,并降低网络负载,加快连接恢复过程。

Description

一种维持大量连接的方法、 用户设备及*** 技术领域
本发明涉及机器对机器(M2M, Machine to Machine )技术, 特别是指 一种维持大量连接的方法、 用户设备(UE, User Equipment )及***。 背景技术
M2M技术是指: 机器之间建立连接的所有技术和手段。 在上个世纪九 十年代, 就出现了 M2M的概念, 但是, 只停留在理论阶段。 2000 年以后, 随着移动通信技术的发展, 使得通过移动通信技术实现机器设备之间的联 网成为可能。 2002 年左右, 在市场上出现了 M2M业务, 并在随后的几年 迅速发展, 成为了众多通信设备商和电信运营商的关注焦点。 而且, 目前, 全球的机器数量比人的数量要多很多, 因此, 可以预见到 M2M技术良好的 市场前景。
对 M2M通信应用场景的研究表明, 在移动网络上提供 M2M通信, 具 有潜在的市场前景; 另外, 目前电信市场竟争日趋激烈, 资费不断下降, 运营商的利润空间不断减小, 以人为基础的通信市场正在趋于饱和, 因此, M2M通信对运营商来说是全新的发展机遇。
但是, 由于现有的移动通信网络主要针对人与人的通信进行设计, 而 对机器与机器、 人与机器之间的通信则优化不足, 因此, M2M业务对现有 的移动通信***提出了很多新的要求, 为了增强移动网络在这方面的竟争 力,有必要对现有的移动网络进行优化,来更有效地支持 M2M通信。此外, 运营商如何能够以低成本提供 M2M通信服务, 也是 M2M通信部署成功的 关键。
基于以上分析,有必要研究移动网络支持 M2M通信的解决方案,解决 方案要能最大限度地利用现有网络,并降低大量 M2M通信对网络造成的影 响、 以及运营维护的复杂度。
在现有技术中, 为了有效地利用现有的移动网络资源, 第三代合作伙 伴计划 (3GPP, 3rd Generation Partnership Project )提出了机器类型通信 ( MTC, Machine Type Communication ), 即: M2M、 机器对人 ( Machine to Man )进行通信的业务, 其业务范围远远超出了以往人对人(H2H, Human to Human )之间的通信, 并且, MTC在接入控制、 计费、 安全性、 服务质 量(QoS, Quality of Service )、 以及业务模式等方面与现有的 H2H通信模 式有很大的区别。
图 1为 3GPP演进分组***(EPS, Evolved Packet System ) 的架构示 意图, 从图 1 中可以看出, EPS 包括: 无线接入网 ( RAN, Radio Access Network )及核心网。 其中, 无线接入网具体可以是: 通用移动通信***陆 地无线接入网 (UTRAN, UMTS Terrestrial Radio Access Network ), 演进的 UTRAN ( E-UTRAN , Evolved UTRAN )、 GSM/EDGE 无线接入网络 ( GERAN, GSM/EDGE Radio Access Network )等;在 E-UTRAN中, 包括: 演进的节点 B ( eNB, evolved Node B ); 对于核心网的组成, 在演进分组核 心网 (EPC, Evolved Packet Core ) 中, 即: 无线接入网为 E-UTRAN时, 核心网包括: 移动管理实体( MME , Mobility Management Entity ), 服务网 关( S-GW, Serving Gate Way )、以及分组数据网网关( P-GW, PDN Gateway ) 等网元, 在通用分组无线业务( GPRS, General Packet Radio Service ) 中, 即: 无线接入网为 UTRAN或 GERAN时, 核心网包括: 服务 GPRS支持节 点 (SGSN, Serving GPRS Support Node )等网元。
要实现 MTC***, 则有效地维持大量 MTC设备的连接是对 MTC系 统的基本要求之一, 换句话说, MTC ***应该提供有效地维持大量 MTC 设备的连接的机制。 因此, 需要考虑以下三个方面的因素: 1、 有效性; 2、 维持连接; 3、 大量的 MTC设备。 在目前的研究中, 只有第 2点是明确的, 即: 保持永远在线 "always on" ; 而对于第 3点: 大量的含义并不明确, 即: 并不能明确多少量算是大量; 对于第 1 点, 有效性的定义也不明确, 虽然 有效性的定义并不明确, 但是, 根据以往 3GPP会议的讨论情况可知, 这条 需求主要是针对当大量设备处于" always on"状态时, 网络设备如何有效地 进行相关资源的维护。
基于图 1所示的网络架构,图 2为 3GPP中的 MTC***的架构示意图, 如图 2所示,在 MTC***中,需要一直保持 UE、 RAN, GGSN, 网关 GPRS 支持节点 (GGSN, Gateway GPRS Support Node ) /P-GW /演进型分组数据 网关( ePDG, evolved Packet Data Gateway )、以及 MTC服务器( MTC Server ) 之间的链路。 其中, 在图 2中, 虚线―…表示控制面的连接, 实线——表示 用户面的连接。
在长期演进(LTE, Long Term Evolution ) 网络中, UE附着到网络后, 即进入 "always on"状态,直到 UE去附着( detach )为止。 而处于 "always on" 状态的 UE, 网络设备需要维护它的上下文信息等相关信息。 如果大量的设 备都处于这种状态, 就必然有大量的上下文信息需要维护, 从而会占用大 量的网络资源, 而目前, 并没有如何有效地管理并尽量减少对网络资源的 占用的技术方案。
此外,在 UE与网络设备之间无数据发送时,可以释放无线链路承载或 去附着, 以减少对无线资源的占用, 而在现有技术中, 释放无线承载后, 当需要发送数据时, 还没有迅速重建无线连接的技术方案。 发明内容
有鉴于此, 本发明的主要目的在于提供一种维持大量连接的方法、 用 户设备及***, 能有效地维持大量 UE的连接。
为达到上述目的, 本发明的技术方案是这样实现的: 本发明提供了一种维持大量连接的方法, 该方法包括:
当 UE与网络之间无数据传输时, 网络设备删除无线承载,保留与恢复 链路相关的 UE的上下文信息及缺省承载;
当 UE与网络之间需要传输数据时,网络设备依据保留的与恢复链路相 关的 UE的上下文信息, 建立与 UE的承载连接。
上述方案中,当 UE与网络之间无数据传输的时间间隔小于等于预设的 阈值时, 该方法进一步包括:
网络设备进一步保留有线承载;
所述有线承载包括: S1承载、 S5/8承载及 SGi承载。
上述方案中, 当 UE与网络之间需要一直传送数据、 或根据 UE的签约 属性、 或根据运营商策略, 需要一直保持 UE与网络之间的连接时, 该方法 进一步包括:
网络设备保留无线承载, 并保留 UE的所有上下文信息及有线承载; 所述有线承载包括: S1承载、 S5/8承载及 SGi承载。
上述方案中, 所述大量连接为两个以上连接。
本发明还提供了一种维持大量连接的方法,该方法包括: 当 UE与网络 之间无数据传输时, 网络设备删除无线承载, 保留与恢复链路相关的 UE 的上下文信息及缺省承载;
当网络设备出现故障或断电后,丟失保留的 UE的所有上下文信息并删 除了所有承载, 或者, 由于在规定时长内未检测到大量 UE的信息, 网络设 备发起了 detach过程, 删除了大量 UE的所有上下文信息和所有承载后, 该方法进一步包括:
当 MTC Server需要向一批所述 UE发送数据时, 通过网络设备向所述 UE发送触发( trigger )信息, 建立与所有所述 UE之间的连接。
上述方案中, 所述通过网络设备向所述 UE发送 trigger信息, 建立与 所有所述 UE之间的连接, 为:
MTC Server向网络设备发送 trigger信息;
网络设备对收到的 trigger信息进行转发处理,之后向所述收到的 trigger 信息对应的 UE发送 trigger信息;
所述 UE收到 trigger信息后,发起 attach过程,建立与网络侧之间的连 接。
上述方案中, 在网络设备对收到的 trigger信息进行转发处理时, 该方 法进一步包括:
网络设备将收到的 trigger信息中的 UE标识转换成国际移动用户识别 码 ( IMSI, Internal Mobile Subscriber Identifier )。
本发明又提供了一种维持大量连接的网络设备, 该网络设备包括: 删 除单元以及恢复单元; 其中,
删除单元, 用于当 UE与网络之间无数据传输时, 删除无线承载, 保留 与恢复链路相关的 UE的上下文信息及缺省承载;
恢复单元, 用于当 UE与网络之间需要传输数据时,依据保留的与恢复 链路相关的 UE的上下文信息, 建立与 UE的承载连接。
本发明还提供了一种维持大量连接的网络设备, 该网络设备包括: 删 除单元、 以及发送单元; 其中,
删除单元, 用于当 UE与网络之间无数据传输时, 删除无线承载, 保留 与恢复链路相关的 UE的上下文信息及缺省承载;
转发单元, 用于当网络设备出现故障或断电后,丟失保留的 UE的所有 上下文信息并删除了所有承载, 或者, 由于在规定时长内未检测到大量 UE 的信息, 网络设备发起了 detach过程, 删除了大量 UE的所有上下文信息 和所有承载后, 且当 MTC Server需要向一批所述 UE发送数据时, 向所述 UE转发收到的 trigger信息,建立 MTC Server与所有所述 UE之间的连接。 本发明又提供了一种维持大量连接的用户设备, 该用户设备包括: 接 收模块及处理模块; 其中,
接收模块, 用于接收 trigger信息, 并将收到的 trigger信息发送给处理 模块;
处理模块, 用于收到接收模块发送的 trigger信息后, 发起 attach过程, 建立与网络侧之间的连接。
本发明还提供了一种维持大量连接的***, 该***包括: 网络设备, 用于当 UE与网络之间无数据传输时,删除无线承载,保留与恢复链路相关 的 UE的上下文信息及缺省承载; 以及当 UE与网络之间需要传输数据时, 依据保留的与恢复链路相关的 UE的上下文信息, 建立与 UE的承载连接。
上述方案中,所述网络设备,还用于当 UE与网络之间无数据传输的时 间间隔小于等于预设的阈值, 进一步保留有线承载。
上述方案中, 所述网络设备, 还用于当与 UE之间一直需要传送数据、 或根据签约属性、或根据运营商策略, 需要一直保持 UE与网络之间的连接 时, 保留无线承载, 并保留 UE的所有上下文信息及有线承载。
本发明还提供了一种维持大量连接的***, 该***包括: 网络设备、 MTC Server, 以及 UE; 其中,
网络设备, 用于当 UE与网络之间无数据传输时, 删除无线承载, 保留 与恢复链路相关的 UE的上下文信息及缺省承载;
MTC Server,用于当网络设备出现故障或断电后,丟失保留的 UE的所 有上下文信息并删除了所有承载, 或者, 由于在规定时长内未检测到大量 UE的信息, 网络设备发起了 detach过程, 删除了大量 UE的所有上下文信 息和所有承载后, 且需要向一批 UE发送数据时, 通过网络设备向 UE发送 trigger信息, 建立与所有 UE之间的连接;
UE, 用于收到 MTC Server通过网络设备发送的 trigger信息后, 建立 与 MTC Server之间的连接。
上述方案中, 所述 MTC Server, 具体用于: 向网络设备发送 trigger信 所述网络设备, 具体用于: 收到 MTC Server发送的 trigger信息后, 对 收到的 trigger信息进行转发处理, 并向 UE发送 trigger信息;
所述 UE, 具体用于: 收到网络设备发送的 trigger信息后, 发起 attach 过程, 建立与网络侧之间的连接。
上述方案中, 所述网络设备对收到的 trigger信息进行转发处理时, 进 一步用于将收到的 trigger信息中的 UE标识转换成 IMSI。
上述方案中, 所述 UE的个数为两个以上。
本发明提供的维持大量连接的方法及***,当 UE与网络之间无数据传 输时, 进入挂起状态, 即: 网络设备删除无线承载, 保留与恢复链路相关 的 UE的上下文信息及缺省承载; 当 UE与网络之间需要传输数据时, 进入 恢复状态, 即: 网络设备依据保留的与恢复链路相关的 UE的上下文信息, 建立与 UE的承载连接; 如此, 能有效地维持大量 UE的连接。
当 UE与网络之间无数据传输时网络设备删除无线承载,保留与恢复链 路相关的 UE的上下文信息及缺省承载, 如此, 能有效地节约存储空间, 从 而有效地降低网络负载; 当 UE与网络之间需要传输数据时, 网络设 据 保留的与恢复链路相关的 UE的上下文信息,建立与 UE的承载连接,如此, 能提高连接恢复的速度。
当网络设备出现故障或断电后,丟失保留的 UE的所有上下文信息并删 除了所有承载, 或者, 由于在规定时长内未检测到大量 UE的信息, 网络设 备发起了 detach过程, 删除了大量 UE的所有上下文信息和所有承载后, 且当 MTC Server需要向一批 UE发送数据时, 通过网络设备向 UE发送 trigger信息, 建立与所有所述 UE之间的连接, 如此, 能使大量 UE快速地 接入网络。 附图说明
图 1为现有技术中 3GPP EPS的架构示意图;
图 2为现有技术中 3GPP MTC***的架构示意图;
图 3为本发明维持大量连接的方法流程示意图;
图 4为实施例一维持大量连接的方法流程示意图;
图 5为实施例二维持大量连接的方法流程示意图;
图 6为实施例三维持大量连接的方法流程示意图;
图 7为本发明维持大量连接的***结构示意图。 具体实施方式
下面结合附图及具体实施例对本发明再作进一步详细的说明。
在下面的描述中, UE为具有 MTC设备特性的 UE; 这里, 本发明描述 的 UE具体可以是各种移动通信技术中所描述的用户使用的设备,比如可以 是 LTE UTRA中的 UE、 2G/3G/GREAN中的移动台 (MS, Mobile Station ) 等。 一般, 机器数量比人的数量要多很多, 比如高 2个数量级以上, 在本 发明中, 如无特别说明, 大量连接是指多于一个连接, 即: 大量连接为两 个以上连接。
本发明维持大量连接的方法, 如图 3所示, 包括以下步驟:
步驟 301: 当 UE与网络之间无数据传输时, 进入挂起状态;
这里, 所述无数据传输是指: UE发送、 和 /或接收数据结束, 或者, 网 络设备发送、 和 /或接收数据结束; 如果是 UE发送、 和 /或接收数据结束, 则需要通知网络设备; 相应的, 如果网络设备发送、 和 /或接收数据结束, 则需要通知 UE。
所述进入挂起状态, 具体为: 网络设备删除无线承载,保留与恢复链路相关的 UE的上下文信息及缺 省承载。
其中, 所述网络设备可以包括: UE与 MTC Server之间实现数据传输 时所需要的所有设备,比如: RAN设备、 MME/SGSN、 S-GW/P-GW, ( HSS , Home Subscriber Server ) /归属位置寄存器 ( HLR, Home Location Register )、 MTC互联功能( MTC IWF, MTC InterWorking Function ),以及业务中心( SC, Service Center )等, 所述 RAN设备具体可以是 eNB; 在实际应用时, 根据 部署的网络的不同, 所述网络设备会有所不同。 所述网络设备可以是组成 3GPP 网络的网络设备。 网络设备具体包括哪些设备不是本发明关心的内 容。 在实际应用过程中, UE的上下文信息包括: IMSI、 国际移动设备身份 码(IMEI, International Mobile Equipment Identity ), 签约信息、 移动性管 理状态 (Mobility management state )、 全球唯一临时标识( GUTI, Globally Unique Temporary Identity )、 艮踪区域列表 ( Tracking area list )、 最后访问的 跟踪区域标识 (Last visited tracking area ID )、 非连续接收参数 (DRX parameters , Discontinuous Reception parameters ) , 安全参数 ( Security parameters )等。 UE的上下文信息可以保存在上述的一个以上网络设备中; 而所述与恢复链路相关的 UE的上下文信息由运营商根据业务需求、 UE的 MTC特性、以及策略,确定哪些 UE的上下文信息为与恢复链路相关的 UE 的上下文信息。
所述缺省承载是指: S5/8接口上的承载, 即: S-GW与 P-GW之间的 承载, 在 UE附着 (attach ) 时, 建立缺省承载。
这里, 当 UE 与网络之间无数据传输的时间间隔小于等于预设的阈值 时, 该方法还可以进一步包括:
网络设备进一步保留有线承载。 其中, 可以依据需要设置阈值。 所述 有线承载包括: S1承载、 S5/8承载及 SGi承载。 步驟 302: 当 UE与网络之间需要传输数据时, 进入恢复状态。
这里, 所述传输数据是指: UE发送、 和 /或接收数据, 或者, 网络设备 发送、 和 /或接收数据; 如果网络设备发送数据可能需要进行 trigger过程。
所述进入恢复状态, 具体为:
网络设备依据保留的与恢复链路相关的 UE的上下文信息, 建立与 UE 的承载连接。
其中, 依据保留的与恢复链路相关的 UE的上下文信息, 建立与 UE的 无线承载的具体处理过程可采用现有技术; 所述无线承载包括: 空口承载。
当网络设备与 UE之间一直传送数据、或根据签约属性、或根据运营商 策略, 需要一直保持 UE与网络之间的连接时, 该方法还可以进一步包括: 网络设备保留无线承载, 并保留 UE的所有上下文信息及有线承载。 所述有线承载包括: S1承载、 S5/8承载及 SGi承载。
本发明还提供了一种维持大量连接的方法, 该方法包括:
当 UE与网络之间无数据传输时, 网络设备删除无线承载,保留与恢复 链路相关的 UE的上下文信息及缺省承载;
当网络设备出现故障或断电后,丟失保留的 UE的所有上下文信息并删 除了所有承载, 或者, 由于在规定时长内未检测到大量 UE的信息, 网络设 备发起了 detach过程, 删除了大量 UE的所有上下文信息和所有承载后, 且当 MTC Server需要向一批所述 UE发送数据时,通过网络设备向所述 UE 发送 trigger信息, 建立与所有所述 UE之间的连接;
具体地, MTC Server向网络设备发送 trigger信息;
网络设备对收到的 trigger信息进行转发处理,之后向所述收到的 trigger 信息对应的 UE发送 trigger信息;
所述 UE收到 trigger信息后,发起 attach过程,建立与网络侧之间的连 接。 其中, 所述 MTC Server向网络设备发送的 trigger信息是指: 在一条 trigger信息中包含针对多个 UE的信息;
在网络设备对收到的 trigger信息进行转发处理时, 该方法还可以进一 步包括:
网络设备将收到的 trigger信息中的 UE标识转换成 IMSI , 以便网络设 备可以将 trigger信息发送给 UE。
下面结合实施例对本发明再作进一步详细的描述。
实施例一
本实施例中, UE为具有时间控制 ( time control ) 特性的 UE, 即: 网 络设备已规定 UE可以在什么时间与网络设备进行通信。本实施例维持大量 连接的方法, 如图 4所示, 包括以下步驟:
步驟 401: UE与 MTC Server之间停止发送数据;
这里,停止发送数据的原因可以是:授权时间间隔( Grant Time Interval ) 超时、进入禁止时间间隔( Forbidden Time Interval )、或在 Grant Time Interval 或通信窗口 ( Communication Window ) 中数据发送完毕等。
如果 UE停止发送或接收数据, 则 UE向网络设备发送指示信息; 如果 MTC Server停止发送或接收数据,则 MTC Server通过网络设备向 UE发送 指示信息; 其中, 所述指示信息可以包括: 下一次发送数据的时间信息。
步驟 402: 网络设备删除无线承载, 保存或删除 UE 的上下文信息及 UE信息中的签约信息, 之后执行步驟 403 ;
这里, 网络设备删除无线承载的具体处理过程可采用现有技术。
由于 UE的上下文信息保存在不同的网络设备上,各个网络设备根据需 要确定保存或删除 UE的上下文信息及 UE信息中的签约信息, 具体地, 如 果 UE目前处于 Grant Time Interval或 Communication Window中, 或者, Forbidden Time Interval小于等于预设的阈值, 则所有的网络设备均保留自 身存储的 UE的上下文信息, 并保留 UE信息中的签约信息; 如果 UE目前 不处于 Grant Time Interval或 Communication Window中, 或者, Forbidden Time Interval大于预设的阈值; 则存储与恢复链路相关的 UE的上下文信息 的网络设备保留与恢复链路相关的 UE的上下文信息,而未存储与恢复链路 相关的 UE的上下文信息的网络设备删除 UE的上下文信息,并删除所述签 约信息; 其中, 依据需要设置阈值, 比如, 可以设置为 lOmin等; 网络设 备事先已获知 UE的状态, 从而据此可以通过获知 UE目前是否处于 Grant Time Interval或 Communication Window中、以及获知 UE的 Forbidden Time Interval。
所述 UE的上下文信息可以保存在 eNB、 和 /或 MME中; 即: 网络设 备包括: eNB、 MME; 所述 UE信息是指: UE的标识信息和签约信息, 具 体包括: IMSI、 IMEL签约信息、 以及 QoS等, UE信息保存在 HSS/ HLR 中。
删除 UE的上下文信息及 UE信息中的签约信息的具体处理过程为现有 技术, 这里不再赘述。
步驟 403: 网络设备保留缺省承载, 之后执行步驟 404;
这里, 需要说明的是: 网络设备保留缺省承载, 可以删除专用承载, 专用承载是指缺省承载之外的用于传输数据的承载; 可以通过 MME/SGSN 发起删除专用承载过程, 具体处理过程可采用现有技术。
步驟 404: 网络设备和 UE之间准备传送数据, 之后执行步驟 405; 这里,所述传送数据可以由 UE或网络设备发起,如果是网络设备发起, 可能需要经过 trigger过程, 以请求 UE建立连接; 其中, 网络设备发起传 送数据的具体处理可采用现有技术, trigger过程的具体实现可以参照实施 例三。
步驟 405: 网络设^据保留的与恢复链路相关的 UE的上下文信息, 恢复与 UE之间的承载连接, 开始发送数据, 结束当前处理流程。
这里, 所述承载包括: 空口承载、 S1承载、 SGi承载; 进一步还可以 包括: 专用承载。
需要说明的是: 如果 UE当前处于 Forbidden Time Interval中, 则需要 等待 UE进入 Grant Time Interval后, 才能开始本步驟的操作。
实施例二
在本实施例中, UE 为经过长时间间隔后与网络设备进行数据传输的 UE, 即: 时间间隔大于设置的阈值, 本实施例维持大量连接的方法, 如图 5所示, 包括以下步驟:
步驟 501: UE与 MTC Server之间停止发送数据;
如果 UE停止发送或接收数据, UE向网络发送指示信息; 或者, MTC Server停止发送或接收数据, 则 MTC Server向 UE发送指示信息; 上述指 示信息可能包括下一次准备发送数据的时间信息。
步驟 502: 网络设备删除无线承载, 保存或删除 UE 的上下文信息和 UE信息;
这里, 网络设备删除无线承载的具体处理过程可采用现有技术。
由于 UE的上下文信息保存在不同的网络设备上,各个网络设备根据需 要确定保存或删除 UE的上下文信息和 UE信息中的签约信息, 具体地, 存 储与恢复链路相关的 UE 的上下文信息的网络设备保留与恢复链路相关的 UE的上下文信息, 而未存储与恢复链路相关的 UE的上下文信息的网络设 备删除 UE的上下文信息, 并删除所述签约信息。
所述 UE的上下文信息可以保存在 eNB、 和 /或 MME中; 即: 网络设 备包括: eNB、 MME; UE信息保存在 HSS/ HLR中。
步驟 503: 网络设备保留缺省承载, 之后执行步驟 504;
这里, 需要说明的是: 网络设备保留缺省承载, 可以删除专用承载, 专用承载是指缺省承载之外的用于传输数据的承载; 可以通过 MME/SGSN 发起删除专用承载过程, 具体处理过程可采用现有技术。
步驟 504: 网络设备和 UE之间准备传送数据;
所述传送数据可以由 UE或网络侧发起,如果是网络设备发起,可能需 要经过 trigger过程, 以请求 UE建立连接; 其中, 网络设备发起传送数据 的具体处理可采用现有技术, trigger过程的具体实现可以参照实施例三。
步驟 505: 网络设^据保留的与恢复链路相关的 UE的上下文信息, 恢复与 UE之间的承载连接, 开始发送数据, 结束当前处理流程。
这里, 所述承载包括: 空口承载、 S1承载、 SGi承载; 进一步还可以 包括: 专用承载。
实施例三
本实施例的应用场景为: 网络设备出现故障或断电后, 丟失保留的 UE 的所有上下文信息并删除了所有承载, 或者, 由于在规定时长内未检测到 大量 UE的信息, 网络设备发起了 detach过程,删除了大量 UE的所有上下 文信息和所有承载; MTC Server需要向这些 not attached UE发送数据。 这 里,网络设备为 3GPP网络中的网络设备; detach过程可以显示或隐示进行, detach过程的具体处理过程为现有技术。本实施例维持大量连接的方法,如 图 6所示, 包括以下步驟:
步驟 601 : MTC Server准备向 not attached UE发送数据, 之后执行步 驟 602;
步驟 602: MTC Server向 MTC IWF发送 trigger信息;
这里,考虑到需要触发请求大量的 not attached UE,所述 trigger信息中 包含针对多个 UE的 trigger信息。
步驟 603: MTC IWF收到 trigger信息后, 向 trigger信息中的 UE注册 的 MME/SGSN转发 trigger信息; 这里, 在 3GPP网络中, MTC IWF将 trigger信息中的 UE标识转换成 IMSI, 之后再向 trigger信息中的 UE注册的 MME/SGSN转发 trigger信息; 其中 , MTC IWF事先保存了 UE的 IMSI, 或者, MTC IWF通过 HSS/HLR 请求得到 UE的 IMSI, 从而可以据此将 trigger信息中的 UE标识转换成 IMSL
MTC IWF可通过 HSS/HLR查询 UE的信息,得到相应的 MME/SGSN, 从而向相应的 MME/SGSN转发 trigger信息。
如果 trigger信息中的 UE注册在同一个 MME/SGSN上, 则 MTC IWF 向该 MME/SGSN发送 trigger信息, 如果 trigger信息中的 UE注册在多个 MME/SGSN上, 则 MTC IWF向注册的多个 MME/SGSN均发送 trigger信 步驟 604: MME/SGSN收到 trigger信息后, 向 trigger信息中的 UE对 应的 eNB转发 trigger信息;
步驟 605: eNB收到 trigger信息后, 向 UE发送 trigger信息; 步驟 606: UE收到 trigger信息后, 发起 attach过程, 建立与网络侧之 间的承载连接, 之后执行步驟 607;
这里, 所述承载包括: 空口承载、 S1承载、 SGi承载, 还可以进一步 包括: 专用承载。
建立与网络侧之间的承载连接的具体处理过程可采用现有技术。
步驟 607: MTC Server向 UE发送数据。
为实现上述方法, 一种维持大量连接的网络设备, 其特征在于, 该网 络设备包括: 删除单元以及恢复单元; 其中,
删除单元, 用于当 UE与网络之间无数据传输时, 删除无线承载, 保留 与恢复链路相关的 UE的上下文信息及缺省承载;
恢复单元, 用于当 UE与网络之间需要传输数据时,依据保留的与恢复 链路相关的 UE的上下文信息, 建立与 UE的承载连接。
其中, 所述删除单元,还用于当 UE与网络之间无数据传输的时间间隔 小于等于预设的阈值时, 进一步保留有线承载。 其中, 所述有线承载包括: S1承载、 S5/8承载及 SGi承载。
所述删除单元, 还用于当 UE 与网络之间需要一直传送数据、 或根据 UE的签约属性、 或根据运营商策略, 需要一直保持 UE与网络之间的连接 时, 保留无线承载, 并保留 UE的所有上下文信息及有线承载。 其中, 所述 有线承载包括: S1承载、 S5/8承载及 SGi承载。
基于上述网络设备, 本发明还提供了一种维持大量连接的***, 该系 统包括: 网络设备, 用于当 UE与网络之间无数据传输时, 删除无线承载, 保留与恢复链路相关的 UE的上下文信息及缺省承载; 以及当 UE与网络之 间需要传输数据时,依据保留的与恢复链路相关的 UE的上下文信息,建立 与 UE的 载连接。
这里, 需要说明的是: 所述 UE为具有 MTC设备特性的 UE, 所述 UE 的个数可以为两个以上。
其中,所述网络设备,还用于当 UE与网络之间无数据传输的时间间隔 小于等于预设的阈值, 进一步保留有线承载。
所述网络设备,还用于当与 UE之间一直需要传送数据、或根据签约属 性、 或根据运营商策略, 需要一直保持 UE与网络之间的连接时, 保留无线 承载, 并保留 UE的所有上下文信息及有线承载。
这里, 需要说明的是: 所述网络设备可以包括: UE与 MTC Server之 间实现数据传输时所需要的所有设备, 比如: RAN设备、 MME/SGSN、 S-GW/P-GW, HSS/ HLR、 MTC IWF、 以及 SC等, 所述 RAN设备具体可 以是 eNB; 在实际应用时, 根据部署的网络的不同, 所述网络设备会有所 不同。所述网络设备可以是组成 3GPP网络的网络设备。 网络设备具体包括 哪些设备不是本发明关心的内容。 在实际应用过程中, UE的上下文信息包 括: IMSL IMEL签约信息、 Mobility management state、 GUTL Tracking area list、 Last visited tracking area ID、 DRX parameters、 Security parameters等。
UE的上下文信息可以保存在上述的一个以上网络设备中; 而所述与恢复链 路相关的 UE的上下文信息由运营商根据业务需求、 UE的 MTC特性、 以 及策略,确定哪些 UE的上下文信息为与恢复链路相关的 UE的上下文信息。
本发明还提供了一种维持大量连接的网络设备, 该网络设备包括: 删 除单元、 以及发送单元; 其中,
删除单元, 用于当 UE与网络之间无数据传输时, 删除无线承载, 保留 与恢复链路相关的 UE的上下文信息及缺省承载;
转发单元, 用于当网络设备出现故障或断电后,丟失保留的 UE的所有 上下文信息并删除了所有承载, 或者, 由于在规定时长内未检测到大量 UE 的信息, 网络设备发起了 detach过程, 删除了大量 UE的所有上下文信息 和所有承载后, 且当 MTC Server需要向一批所述 UE发送数据时, 向所述 UE转发收到的 trigger信息,建立 MTC Server与所有所述 UE之间的连接。
基于上述网络设备, 本发明还提供了一种维持大量连接的***,如图 7 所示, 该***包括: 网络设备 71、 MTC Server 72、 以及 UE 73; 其中, 网络设备 71 , 用于当 UE与网络之间无数据传输时, 删除无线承载, 保留与恢复链路相关的 UE的上下文信息及缺省承载;
MTC Server 72, 用于当网络设备出现故障或断电后, 丟失保留的 UE 的所有上下文信息并删除了所有承载, 或者, 由于在规定时长内未检测到 大量 UE的信息, 网络设备 71发起了 detach过程, 删除了大量 UE的所有 上下文信息和所有承载后, 且需要向一批 not attached UE发送数据时, 通 过网络设备 71向 UE 73发送 trigger信息, 建立与所有 UE 73之间的连接;
UE 73 , 用于收到 MTC Server 72通过网络设备 71发送的 trigger信息 后, 建立与 MTC Server之间的连接。
这里, 需要说明的是: 所述 UE为具有 MTC设备特性的 UE, 所述 UE 的个数为两个以上。
其中, 所述 MTC Server 72 , 具体用于: 向网络设备 71发送 trigger信 所述网络设备 71 , 具体用于: 收到 MTC Server 72发送的 trigger信息 后, 对收到的 trigger信息进行转发处理, 并向 UE 73发送 trigger信息; 所述 UE 73 , 具体用于: 收到网络设备 71发送的 trigger信息后, 发起 attach过程, 建立与网络侧之间的连接。
其中, 所述网络设备 71 , 在对收到的 trigger信息进行转发处理时, 进 一步用于将收到的 trigger信息中的 UE标识转换成 IMSI。
本发明还提供了一种维持大量连接的用户设备, 该用户设备包括: 接 收模块及处理模块; 其中,
接收模块, 用于接收 trigger信息, 并将收到的 trigger信息发送给处理 模块;
处理模块, 用于收到接收模块发送的 trigger信息后, 发起 attach过程, 建立与网络侧之间的连接。
其中, 所述接收模块, 还用于接收数据。
该用户设备还可以进一步包括: 发送模块, 用于发送数据。
以上所述, 仅为本发明的较佳实施例而已, 并非用于限定本发明的保 护范围。

Claims

权利要求书
1、 一种维持大量连接的方法, 其特征在于, 该方法包括:
当用户设备(UE )与网络之间无数据传输时, 网络设备删除无线承载, 保留与恢复链路相关的 UE的上下文信息及缺省承载;
当 UE与网络之间需要传输数据时,网络设 据保留的与恢复链路相 关的 UE的上下文信息, 建立与 UE的承载连接。
2、 根据权利要求 1所述的方法, 其特征在于, 当 UE与网络之间无数 据传输的时间间隔小于等于预设的阈值时, 该方法进一步包括:
网络设备进一步保留有线承载;
所述有线承载包括: S1承载、 S5/8承载及 SGi承载。
3、 根据权利要求 1或 2所述的方法, 其特征在于, 当 UE与网络之间 需要一直传送数据、 或根据 UE的签约属性、 或根据运营商策略, 需要一直 保持 UE与网络之间的连接时, 该方法进一步包括:
网络设备保留无线承载, 并保留 UE的所有上下文信息及有线承载; 所述有线承载包括: S1承载、 S5/8承载及 SGi承载。
4、 根据权利要求 1或 2所述的方法, 其特征在于, 所述大量连接为两 个以上连接。
5、 一种维持大量连接的方法, 其特征在于, 该方法包括: 当 UE与网 络之间无数据传输时, 网络设备删除无线承载, 保留与恢复链路相关的 UE 的上下文信息及缺省承载;
当网络设备出现故障或断电后,丟失保留的 UE的所有上下文信息并删 除了所有承载, 或者, 由于在规定时长内未检测到大量 UE的信息, 网络设 备发起了去附着 (detach )过程, 删除了大量 UE的所有上下文信息和所有 载后, 该方法进一步包括:
当机器类型通信服务器( MTC Server )需要向一批所述 UE发送数据时, 通过网络设备向所述 UE发送触发(trigger )信息, 建立与所有所述 UE之 间的连接。
6、 根据权利要求 5所述的方法, 其特征在于, 所述通过网络设备向所 述 UE发送 trigger信息, 建立与所有所述 UE之间的连接, 为:
MTC Server向网络设备发送 trigger信息;
网络设备对收到的 trigger信息进行转发处理,之后向所述收到的 trigger 信息对应的 UE发送 trigger信息;
所述 UE收到 trigger信息后,发起 attach过程,建立与网络侧之间的连 接。
7、 根据权利要求 6 所述的方法, 其特征在于, 在网络设备对收到的 trigger信息进行转发处理时, 该方法进一步包括:
网络设备将收到的 trigger信息中的 UE标识转换成国际移动用户识别 码(IMSI )。
8、 根据权利要求 5、 6或 7所述的方法, 其特征在于, 所述大量连接 为两个以上连接。
9、 一种维持大量连接的网络设备, 其特征在于, 该网络设备包括: 删 除单元以及恢复单元; 其中,
删除单元, 用于当 UE与网络之间无数据传输时, 删除无线承载, 保留 与恢复链路相关的 UE的上下文信息及缺省承载;
恢复单元, 用于当 UE与网络之间需要传输数据时,依据保留的与恢复 链路相关的 UE的上下文信息, 建立与 UE的承载连接。
10、 一种维持大量连接的网络设备, 其特征在于, 该网络设备包括: 删除单元、 以及发送单元; 其中,
删除单元, 用于当 UE与网络之间无数据传输时, 删除无线承载, 保留 与恢复链路相关的 UE的上下文信息及缺省承载; 发送单元, 用于当网络设备出现故障或断电后,丟失保留的 UE的所有 上下文信息并删除了所有承载, 或者, 由于在规定时长内未检测到大量 UE 的信息, 网络设备发起了 detach过程, 删除了大量 UE的所有上下文信息 和所有承载后, 且当 MTC Server需要向一批所述 UE发送数据时, 向所述 UE转发收到的 trigger信息,建立 MTC Server与所有所述 UE之间的连接。
11、 一种维持大量连接的用户设备, 其特征在于, 该用户设备包括: 接收模块及处理模块; 其中,
接收模块, 用于接收 trigger信息, 并将收到的 trigger信息发送给处理 模块;
处理模块, 用于收到接收模块发送的 trigger信息后, 发起 attach过程, 建立与网络侧之间的连接。
12、 一种维持大量连接的***, 其特征在于, 该***包括: 网络设备, 用于当 UE与网络之间无数据传输时,删除无线承载,保留与恢复链路相关 的 UE的上下文信息及缺省承载; 以及当 UE与网络之间需要传输数据时, 依据保留的与恢复链路相关的 UE的上下文信息, 建立与 UE的承载连接。
13、 根据权利要求 12所述的***, 其特征在于, 所述网络设备, 还用 于当 UE与网络之间无数据传输的时间间隔小于等于预设的阈值,进一步保 留有线承载。
14、 根据权利要求 12或 13所述的***, 其特征在于, 所述网络设备, 还用于当与 UE之间一直需要传送数据、或根据签约属性、或根据运营商策 略, 需要一直保持 UE与网络之间的连接时, 保留无线承载, 并保留 UE的 所有上下文信息及有线承载。
15、 根据权利要求 12或 13所述的***, 其特征在于, 所述大量连接 为两个以上连接。
16、 一种维持大量连接的***, 其特征在于, 该***包括: 网络设备、 MTC Server, 以及 UE; 其中,
网络设备, 用于当 UE与网络之间无数据传输时, 删除无线承载, 保留 与恢复链路相关的 UE的上下文信息及缺省承载;
MTC Server,用于当网络设备出现故障或断电后,丟失保留的 UE的所 有上下文信息并删除了所有承载, 或者, 由于在规定时长内未检测到大量 UE的信息, 网络设备发起了 detach过程, 删除了大量 UE的所有上下文信 息和所有承载后, 且需要向一批 UE发送数据时, 通过网络设备向 UE发送 trigger信息, 建立与所有 UE之间的连接;
UE, 用于收到 MTC Server通过网络设备发送的 trigger信息后, 建立 与 MTC Server之间的连接。
17、 根据权利要求 16所述的***, 其特征在于,
所述 MTC Server, 具体用于: 向网络设备发送 trigger信息;
所述网络设备, 具体用于: 收到 MTC Server发送的 trigger信息后, 对 收到的 trigger信息进行转发处理, 并向 UE发送 trigger信息;
所述 UE, 具体用于: 收到网络设备发送的 trigger信息后, 发起 attach 过程, 建立与网络侧之间的连接。
18、 根据权利要求 17所述的***, 其特征在于, 所述网络设备对收到 的 trigger信息进行转发处理时, 进一步用于将收到的 trigger信息中的 UE 标识转换成 IMSI。
19、 根据权利要求 16、 17或 18所述的***, 其特征在于, 所述 UE 的个数为两个以上。
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