WO2014032562A1 - 用于传输数据的方法和设备 - Google Patents

用于传输数据的方法和设备 Download PDF

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Publication number
WO2014032562A1
WO2014032562A1 PCT/CN2013/082329 CN2013082329W WO2014032562A1 WO 2014032562 A1 WO2014032562 A1 WO 2014032562A1 CN 2013082329 W CN2013082329 W CN 2013082329W WO 2014032562 A1 WO2014032562 A1 WO 2014032562A1
Authority
WO
WIPO (PCT)
Prior art keywords
user equipment
indication information
downlink data
server
message
Prior art date
Application number
PCT/CN2013/082329
Other languages
English (en)
French (fr)
Inventor
衣强
金辉
薛国栋
张军
李娜
Original Assignee
华为终端有限公司
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 华为终端有限公司 filed Critical 华为终端有限公司
Priority to EP13833759.7A priority Critical patent/EP2852211B1/en
Publication of WO2014032562A1 publication Critical patent/WO2014032562A1/zh
Priority to US14/577,259 priority patent/US9967816B2/en
Priority to US15/957,510 priority patent/US10645648B2/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0212Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/50Network services
    • H04L67/60Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
    • 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
    • H04W76/20Manipulation of established connections
    • H04W76/25Maintenance of established connections
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • Embodiments of the present invention relate to the field of communications, and, more particularly, to a method and apparatus for transmitting data, wherein a device for transmitting data includes a core network control entity, a user equipment, and a server.
  • the user equipment initiates a Tracking Area Update (TAU)/Routing Area Update (RAU) request and starts the TAU/RAU process; the core network control entity (for example, mobility management)
  • the Mobility Management Entity (“MME") or the Serving General Packet Radio Service Support Node (SGSN) receives the TAU/RAU request and indicates the server (for example, Service Capability Server ("SCS") or Machine Type Communication (“MTC”) server)
  • SCS Service Capability Server
  • MTC Machine Type Communication
  • the user equipment sends a TAU/RAU request and instructs the server to send the buffered downlink data to the user.
  • the server sends the buffered downlink data to the user equipment according to the indication of the core network control entity.
  • the core network control entity notifies the server every time after receiving the TAU/RAU request sent by the user equipment (for example, the MTC device), obviously whether the server has downlink data to be sent to the user equipment, The user equipment needs to open the receiver or the wireless module to wait for the downlink data of the server. Therefore, if the server does not send data to the user equipment, the waiting time of the user equipment is wasted. Especially for the user equipment that sends the TAU/RAU message frequently, waiting for the user equipment is disadvantageous for multiple times. Summary of the invention
  • Embodiments of the present invention provide a method for transmitting data, and a core network control method Body, user equipment, and server, which can save the user's device power.
  • a method for transmitting data including:
  • the first indication information After receiving the first message sent by the user equipment, determining whether the first indication information is set, the first indication information indicating that the server caches downlink data to be sent to the user equipment;
  • the signal connection with the user equipment is maintained, and the server that buffers the downlink data is triggered to send the downlink data to the user equipment.
  • the server that triggers the downlink data to send the downlink data to the user equipment includes:
  • the second user equipment can reach the notification message, so that the server that caches the downlink data is triggered to send the downlink data to the user equipment.
  • the maintaining the signaling connection with the user equipment includes:
  • the sending, by the user equipment, the second message that includes the second indication information includes:
  • the second message is sent to the user equipment when the length of the maintainable signaling connection preset for the user equipment is less than a predetermined threshold.
  • the method further includes:
  • the second indication information further includes the Server address information.
  • the method further includes: determining, when the user equipment is a time-controlled user equipment, whether the user equipment is within a permitted communication time range;
  • the determining whether the first indication information is set includes:
  • the fifth possible implementation manner of the first aspect in the seventh possible implementation manner of the first aspect, before the determining whether the first indication information is set, The method also includes:
  • the method also includes:
  • the first indication information is set.
  • the method further includes:
  • the validity period of the downlink data indicated by the first indication information is set according to the validity period of the downlink data carried by the data buffer indication information sent by the server that caches the downlink data; or includes:
  • the first user equipment reachable notification cancellation message sent by the home subscription server or the home location register to which the user equipment belongs is received, and the first indication information is deleted according to the first user equipment reachable notification cancellation message.
  • the first user equipment reachability notification sent by the home subscription server or the home location register to which the user equipment belongs is received Cancel the message, including:
  • Receiving the home subscription server or the home location register according to the Receiving, by the server that stores the downlink data of the user equipment, the first user equipment reachable notification cancellation message sent by the second user equipment reachable notification cancellation message; or comprising: receiving the home subscription server or the attribution
  • the location server determines, according to the first user equipment reachability notification request message, the first user equipment reachability notification cancellation message that is sent after the downlink data expires, where the first user equipment reachability notification request message carries The validity period of the downlink data.
  • the method further includes:
  • a method for transmitting data which is characterized by:
  • the method further includes:
  • the method includes: receiving, by the core network control entity, the first When the message is sent to the second message that includes the second indication information, when the established signaling connection is maintained, the method further includes:
  • the current access network is a general packet radio service technology network, determine whether there is Packet data protocol context reservation;
  • the packet data protocol context procedure is initiated to establish a packet data protocol context when there is no packet data protocol context reservation.
  • a method for transmitting data including:
  • the user equipment can reach the notification request message, so that the core network control entity sets the first indication information according to the second user equipment reachability notification request message, where the first indication information indicates that the server has a cache to be sent to the user.
  • the downlink data to the user equipment, and the first indication information indicates that the downlink data to be sent to the user equipment is buffered in the server, and is sent by the core network control entity according to the first indication information.
  • the downlink data is sent by the request message, the downlink data is sent to the user equipment.
  • the method when the method includes sending the first user equipment reachability notification request message to the home subscription server or a home location register,
  • the method further includes: when determining that the downlink data expires, transmitting a second user equipment reachability notification cancellation message to the home subscription server or the home location register, such that the home subscription server or the attribution
  • the location register sends a first user equipment reachability notification cancellation message to the core network control entity, so that the core network control entity deletes the first indication information according to the first user equipment reachability notification cancellation message; or
  • the first user equipment reachability notification request message further includes the downlink data a validity period, so that the home subscription server sends a first user equipment reachability notification cancellation message to the core network control entity when determining that the validity period of the downlink data is expired according to the first user equipment reachability notification request message Therefore, the core network control entity deletes the first indication information according to the first user equipment reachability notification cancellation message.
  • the method includes sending the data cache indication information to a core network control entity
  • the method further includes: when determining that the validity period of the downlink data expires, sending a fourth message to the core network control entity, where the fourth message is used to instruct the core network control entity to use the first indication Information deletion; or
  • the data cache indication information further includes an expiration date of the downlink data, so that the core network control entity sets the first indication information that is further used to indicate a validity period of the downlink data, and is valid in the downlink data. When expired, the first finger is not deleted.
  • a core network control entity including:
  • a first determining unit configured to determine, after receiving the first message sent by the user equipment, whether the first indication information is set, where the first indication information indicates that the server caches downlink data to be sent to the user equipment;
  • a triggering unit configured to: when the first determining unit determines that the first indication information is set, trigger a server that caches the downlink data to send the downlink data to the user equipment;
  • a holding unit configured to: when the first determining unit determines that the first indication information is set, maintain a signaling connection with the user equipment, to wait for the downlink data sent to the user equipment.
  • the triggering unit is specifically configured to:
  • the trigger unit is specifically configured to:
  • the location register sends a second user equipment reachability notification message to the server that caches the downlink data, so that the server that caches the downlink data sends the downlink data to the user equipment.
  • the holding unit is specifically configured to:
  • the holding unit is specifically configured to:
  • the second message is sent to the user equipment when the length of the maintainable signaling connection preset for the user equipment is less than a predetermined threshold.
  • the core network control entity further includes:
  • a first sending unit configured to send, to the user equipment, a third message that includes third indication information, where the third indication information indicates that no downlink data is to be sent to the Describe the user equipment, so that the user equipment turns off the receiver or enters the power saving mode or shuts down according to the third indication information.
  • the second indication information further includes the Server address information.
  • the core network control entity further includes:
  • a second determining unit configured to determine, when the user equipment is a time-controlled user equipment, whether the user equipment is in a permitted communication time range
  • the first determining unit is specifically configured to:
  • the core network control entity further includes:
  • a first receiving unit configured to receive a second user equipment reachability notification request message sent by the home subscription server or the home location register to which the user equipment belongs, after receiving the first user equipment reachability notification request message, and the first setting a unit, configured to set the first indication information according to the second user equipment reachability notification request message received by the first receiving unit, or include:
  • a second receiving unit configured to receive data cache indication information sent by the server that caches the downlink data, where the data cache indication information indicates that the server caches downlink data to be sent to the user equipment, and the second setting And a unit, configured to set the first indication information according to the data cache indication information.
  • the core network control entity further includes:
  • a third receiving unit configured to receive a context response message sent by a source core network control entity that is served by the user equipment
  • a third setting unit configured to set the first indication information when the first indication information is included in the context response message received by the third receiving unit.
  • the core network control entity further includes:
  • a first deleting unit configured to delete the first indication information when the validity period of the downlink data is expired according to the first indication information, where the first indication is The information is further used to indicate the validity period of the downlink data, where the validity period of the downlink data indicated by the first indication information is the downlink data carried by the data buffer indication information sent by the server that caches the downlink data.
  • the fourth receiving unit is configured to receive a fourth message that is sent by the server that caches the downlink data after the expiration of the validity period of the downlink data, where the fourth message is used to indicate that Deleting the first indication information, and the second deleting unit, configured to delete the first indication information according to the fourth message received by the fifth receiving unit; or include
  • a fifth receiving unit configured to receive a first user equipment reachability notification cancellation message sent by a home subscription server or a home location register to which the user equipment belongs
  • a third deleting unit configured to receive according to the fifth receiving unit The first user equipment can reach the notification cancellation message, and delete the first indication information.
  • the fifth receiving unit is specifically configured to:
  • the establishing unit is further included:
  • a fifth aspect provides a user equipment, including: a sending unit, configured to send a first message to a core network control entity; a power saving unit, configured to: when receiving the third message that is sent by the core network entity according to the first message and that includes the third indication information, shut down the receiver or enter a power saving mode or shut down, where The three indications indicate that the server has no downstream data to send to the user equipment.
  • the user equipment further includes:
  • a holding unit configured to: when receiving the second message that includes the second indication information that is sent by the core network control entity according to the first message, keep the established signaling connection, and wait to receive the downlink data,
  • the second indication information indicates that the server has downlink data to be sent to the user equipment.
  • the user equipment when the user equipment includes the holding unit, the user equipment further includes:
  • a determining unit configured to determine whether a packet data protocol context is reserved when the current access network is a general packet radio service technology network
  • An initiating unit configured to initiate a process of a packet data protocol context to establish a packet data protocol context when there is no packet data protocol context reservation.
  • a server including a first sending unit, a first receiving unit, and a second sending unit;
  • the first sending unit is configured to send a first user equipment reachability notification request message to the home subscription server or the home location register to which the user equipment belongs, so that the home subscription server or the home location register is sent to the user equipment
  • the home network control entity sends a second user equipment reachability notification request message, so that the core network control entity sets first indication information according to the second user equipment reachability notification request message, where the first indication information indicates the server Having the downlink data to be sent to the user equipment
  • the first receiving unit configured to receive the home subscription server or the home location register, receive the core network control entity according to the first a second user equipment reachability notification message sent by the first user equipment after the notification message is sent, and the second sending unit is configured to send the downlink data to the user equipment; or
  • the first sending unit is configured to send to a core network control entity to which the user equipment belongs And sending the data cache indication information, so that the core network control entity sets the first indication information according to the data cache indication information, where the data cache indication information indicates that the server caches downlink data to be sent to the user equipment, And the first indication information indicates that the downlink data to be sent to the user equipment is buffered in the server, and the first receiving unit is configured to receive the downlink that is sent by the core network control entity according to the first indication information.
  • the data delivery request message, and the second sending unit is configured to send the downlink data to the user equipment.
  • the server further includes: a third sending unit, configured to: when determining that the downlink data expires, to the home subscription server or the server Transmitting, by the home location register, a second user equipment reachability notification cancellation message, so that the home subscription server or the home location register sends a first user equipment reachability notification cancellation message to the core network control entity, thereby The core network control entity deletes the first indication information according to the first user equipment reachability notification cancellation message; or
  • the first user equipment reachability notification request message further includes an expiration date of the downlink data, so that the home subscription server determines, when the validity period of the downlink data expires according to the first user equipment reachability notification request message, And sending, by the core network control entity, a first user equipment reachability notification cancellation message, so that the core network control entity deletes the first indication information according to the first user equipment reachability notification cancellation message.
  • the server further includes: a fourth sending unit, configured to control to the core network when determining that the validity period of the downlink data is expired The entity sends a fourth message, where the fourth message is used to instruct the core network control entity to delete the first indication information; or
  • the data cache indication information further includes an expiration date of the downlink data, so that the core network control entity sets the first indication information that is further used to indicate a validity period of the downlink data, and is valid in the downlink data. When expired, the first finger is not deleted.
  • the first indication information indicates that the server caches to be sent to the user equipment.
  • Downlink data when it is determined that the first indication information is set, the signaling connection with the user equipment is maintained, thereby saving transmission
  • the signaling consumption in the downlink data process avoids the process of demolition and re-establishment of the signaling connection between the user equipment and the network entity, thereby avoiding frequent state changes of the user equipment and the network entity, thereby saving the power of the user equipment.
  • FIG. 1 is a schematic flow diagram of a method for transmitting data in accordance with an embodiment of the present invention.
  • FIG. 2 is a schematic flow chart of a method for transmitting data according to another embodiment of the present invention.
  • FIG. 3 is a schematic flow chart of a method for transmitting data according to another embodiment of the present invention.
  • FIG. 4 is a schematic flow chart of a method for transmitting data according to another embodiment of the present invention.
  • FIG. 5 is a schematic flow chart of a method for transmitting data according to another embodiment of the present invention.
  • FIG. 6 is a schematic flow chart of a method for transmitting data according to another embodiment of the present invention.
  • FIG. 7 is a schematic flow chart of a method for transmitting data according to another embodiment of the present invention.
  • FIG. 8 is a schematic flow chart of a method for transmitting data according to another embodiment of the present invention.
  • Figure 9 is a schematic block diagram of a method for transmitting data in accordance with another embodiment of the present invention.
  • FIG. 10 is a schematic block diagram of a core network control entity according to an embodiment of the present invention.
  • 11 is a schematic block diagram of a core network control entity in accordance with another embodiment of the present invention.
  • FIG. 12 is a schematic block diagram of a core network control entity according to another embodiment of the present invention.
  • Figure 13 is a schematic block diagram of a core network control entity in accordance with another embodiment of the present invention.
  • FIG. 14 is a schematic block diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 15 is a schematic block diagram of a user equipment according to another embodiment of the present invention.
  • FIG. 16 is a schematic block diagram of a user equipment according to another embodiment of the present invention.
  • Figure 17 is a schematic block diagram of a server in accordance with an embodiment of the present invention.
  • Figure 18 is a schematic block diagram of a server in accordance with another embodiment of the present invention.
  • FIG 19 is a schematic block diagram of a server in accordance with another embodiment of the present invention. detailed description
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMT Universal Mobile Telecommunication System
  • UE User Equipment
  • RAN Radio Access Network
  • FIG. 1 is a schematic flow diagram of a method 100 for transmitting data in accordance with an embodiment of the present invention.
  • the method 100 can be performed by a core network control entity, such as an SGSN or MME. As shown in FIG. 1, the method 100 includes:
  • the core network control entity after receiving the first message sent by the user equipment, for example, a TAU/RAU request message, an attach request message, or a service request message, may find itself Providing first indication information indicating that the server caches downlink data to be sent to the user equipment; after determining that the first indication information is set, the core network control entity may maintain a signaling connection with the user equipment, and trigger The server that caches the downlink data sends the downlink data to the user equipment, so that after receiving the downlink data or downlink data notification sent by the server to the user equipment, the core network control entity uses the signaling connection maintained by the user equipment.
  • the downlink data is sent to the user equipment.
  • the server that triggers the buffering of the downlink data to send the downlink data to the user equipment may be implemented in the following two manners:
  • Method 1 Send a downlink data delivery request directly to a server that caches the downlink data, to request the server that caches the downlink data to send the downlink data to the user equipment;
  • Manner 2 The first user equipment reachability notification message sent by the home subscription server or the home location server according to the core network control entity is sent by the home subscription server or the home location server to which the user equipment belongs.
  • Sending a second user equipment reachability notification message to the server the server may determine that the user equipment is reachable by using the second user equipment reachability notification message, so that the server may send the cached downlink data to the user equipment.
  • the user equipment reachable means that the user equipment can respond to the paging message or maintain a signaling connection with the core network control entity.
  • the user equipment sends a TAU/RAU request message and sends uplink data. A period of time after the request means that the user device is reachable.
  • the server sends a user equipment reachability notification request message to the home subscription server or the home location server to which the user equipment belongs, which means that the server sends a user equipment reachability notification request message to the home subscription server or the home location server to request
  • the notification is obtained when the user equipment is reachable, and after receiving the second user equipment reachability notification sent by the home subscriber server or the home location server after receiving the first user equipment reachability notification sent by the core network control entity, the server may determine The user equipment is reachable, so that the server can send downlink data to the user equipment.
  • the user equipment After maintaining the signaling connection for a certain period of time, the user equipment can enter the idle mode or the power saving state or shut down to save power.
  • the method for transmitting data in the embodiment of the present invention determines whether the first indication information is set after receiving the first message sent by the user equipment, where the first indication information indicates that the server cache is to be sent.
  • the downlink data to the user equipment is used to maintain the signaling connection with the user equipment when the first indication information is set, so that the signaling consumption in the process of sending the downlink data can be saved, and the user equipment and the network entity are avoided.
  • the process of demolition and re-establishment of the signaling connection avoids frequent state changes of the user equipment and the network entity, thereby saving the power of the user equipment.
  • the signaling connection with the user equipment is maintained in S120, including: sending, to the user equipment, a second message that includes second indication information, where the second indication information indicates that data is to be sent to the user equipment.
  • sending to the user equipment, a second message that includes second indication information, where the second indication information indicates that data is to be sent to the user equipment.
  • the core network control entity may use a second message, for example, a TAU/RAU accept message, an attach accept message, a direct transfer message, a service accept message, or other NAS message, for example, a downlink NAS transport message ( a downlink NAS transport message), etc., to send, to the user equipment, second indication information indicating that data is to be sent to the user equipment, so that the user equipment receives the second information that is sent by the core network control entity After the second message indicating the information, the communicable state is maintained, gp, maintaining a signaling connection with the core network control entity to wait for receiving downlink data sent by the server.
  • a second message for example, a TAU/RAU accept message, an attach accept message, a direct transfer message, a service accept message, or other NAS message, for example, a downlink NAS transport message ( a downlink NAS transport message), etc.
  • the signaling connection with the user equipment is maintained, that is, the core network control entity does not initiate the signaling connection release process, and for the user equipment, the established RRC connection is not released, that is, The timer T3440 or T3340 specified in the existing standard is not activated; if the user equipment maintains the predetermined signaling connection time and has started the timer T3440 or T3340, the second message sent by the user equipment is received. This timer T3440 or T3340 can be deleted.
  • the sending the second message that includes the second indication information to the user equipment may include:
  • the second message is sent to the user equipment when the length of the maintainable signaling connection preset for the user equipment is less than a predetermined threshold.
  • the core network control entity determines that the first indication information is set by itself, it may be determined whether the length of the signalling connection that can be maintained by the user equipment is less than a predetermined threshold, and only when the threshold is less than a predetermined threshold.
  • the second message including the second indication information is sent to the user equipment.
  • the method 100 may further include:
  • the core network control entity may generate third indication information, where the third indication information indicates that there is no downlink.
  • the data is to be sent to the user equipment, and then the third indication can be passed through a third message, for example, a TAU/RAU accept message, an attach accept message, a direct transfer message, a service accept message, or other NAS message.
  • Information is sent to the user device. Therefore, after receiving the third message that is sent by the core network control entity and including the third indication information, the user equipment can close the receiver, enter the power saving mode, or shut down.
  • the receiver after determining that the first indication information indicating that the server caches downlink data to be sent to the user equipment is not set, sending, to the user equipment, that the server does not have downlink data, Sending the third message to the third indication information of the user equipment, so that the user equipment receives the server After the third message containing the third indication information is sent, the receiver is turned off or enters the power saving mode or is turned off, thereby saving power.
  • the second indication information may further include address information of the server, so that after receiving the data sent by the server corresponding to the address information of the server included in the second indication information, the user equipment You can further save power by turning off the receiver, entering power save mode, or turning it off.
  • the first indication information may include multiple server address information, so that the user equipment receives the data of the multiple servers, then turns off the receiver, enters the power saving mode, or shuts down. .
  • triggering the SCS (or MTC SERVER) to transmit downlink data according to the first message is likely to occur outside the allowed communication time range of the time-controlled user equipment, and the Evolved Packet System (Evolved Packet System, Referred to as "EPS")
  • EPS Evolved Packet System
  • the method 100 may further include:
  • the user equipment When the user equipment is a time-controlled user equipment, determining whether the user equipment is within a permitted communication time range;
  • Determining whether the first indication information is stored includes:
  • the core network control entity may determine, according to the subscription data of the user equipment, whether the user equipment belongs to a time-controlled user equipment, and if the user equipment is determined to be The time-controlled user equipment may further determine, according to the subscription data of the user equipment, whether the user equipment is within the allowed communication time range, and determine whether the user equipment is set when the user equipment is within the allowed communication time range.
  • An indication message may be used to determine, according to the subscription data of the user equipment, whether the user equipment is within the allowed communication time range, and determine whether the user equipment is set when the user equipment is within the allowed communication time range.
  • the method for transmitting data according to the embodiment of the present invention determines whether the first indication information is set after determining that the user equipment is in the allowed communication time range, which can reduce the burden on the network.
  • the method 100 may further include:
  • the server when the server needs to send downlink data to the user equipment, but the time range in which the downlink data is not currently sent to the user equipment, the server may cache the downlink data and send the downlink data to the core.
  • the network control entity sends data buffer indication information indicating that the server caches downlink data to be sent to the user equipment, and the core network control entity may set the first indication information after receiving the data cache indication information sent by the server. .
  • the method 100 may further include:
  • the second user equipment reachability notification request message sent after receiving the first user equipment reachability notification request message, according to the second user equipment reachability notification request message, Setting the first finger to no information
  • the server may cache the downlink data and send the downlink subscription data to the user equipment or
  • the home location register sends a first user equipment reachability notification request message, where the first user equipment reachability notification request message can carry the address information of the server and the identity information of the user equipment, and then the home subscription server or the home location register can be
  • the first user equipment reachability notification request message sends a second user equipment reachability notification request message to the core network control entity where the user equipment is located, where the second user equipment reachability notification request message can carry the identity information of the user equipment, and the core network
  • the control entity may set the first indication information.
  • the method 100 may further include:
  • the core network control entity may send a context request message to the source core network control entity serving the user equipment.
  • the core network control entity may send a context request message to the source core network control entity serving the user equipment.
  • the method 100 may further include:
  • the validity period of the downlink data is set according to the validity period of the downlink data carried by the data buffer indication information sent by the server that caches the downlink data.
  • the data cache indication information sent by the server to the user equipment further indicates the downlink data that is buffered by the server and sent to the user equipment.
  • the expiration date after receiving the data buffer indication sent by the server, the core network control entity may set the first indication information that is also used to indicate the validity period of the downlink data. If the validity period expires, and the corresponding data is still not sent, Then, the core network control entity may delete the first finger information.
  • the method 100 may further include:
  • the server And receiving, by the server that caches the downlink data, a fourth message that is sent after the expiration of the validity period of the downlink data, where the fourth message is used to indicate that the first indication information is deleted, and the first indication is deleted according to the fourth message.
  • the server may instruct the core network control entity to store the first An indication information is deleted, so that the core network control entity can delete the first indication information according to an instruction of the server.
  • the method 100 may further include:
  • receiving the first user equipment reachability notification cancellation message sent by the home subscription server or the home location register may include:
  • the notification request message carries the validity period of the downlink data.
  • the first indication information may be used to indicate that multiple servers have downlink data to send to the user equipment, and the home subscription server or the home location server receives the user equipment reachability notification sent by any server. After the message is canceled, or the home subscription server or the home location server determines that the data to be sent by the server to the user equipment expires, the information related to the reachability of the user equipment of the any server may be deleted, at the home subscription server or the home location. After the server deletes the information about the reachability of the user equipment of the multiple servers, that is, when there is no notification request that is reachable to the user equipment, the server instructs the core network control entity to delete the first indication information.
  • the TAU/RAU request message can trigger the server to send the buffered downlink data to the user equipment.
  • the TAU/RAU process may be few or not, and the scenario is highly likely to affect the server.
  • the data is sent to the user equipment because the data to be sent cached in the server may be invalid or deleted after a certain time.
  • the first message may be a TAU/RAU request cancellation.
  • the information may be an attach request message or a service request message. Therefore, the opportunity for the server to send the buffered downlink data to the user equipment can be increased to prevent the data from being invalidated or deleted.
  • the method 100 may further include:
  • E-RAB evolved universal land-based radio access network radio access bearer corresponding to the bearer transmitting the corresponding data packet
  • the network radio access bear (referred to as "E-RAB") or the radio access bearer (Radio Access Bear, referred to as "RAB") corresponding to the packet data protocol (“PDP”) context for transmitting the corresponding data packet.
  • PDP packet data protocol
  • the core network control entity maintains a signaling connection with the user equipment when determining that the first indication information is set, wherein the second network message including the second indication information may be sent to the user equipment to maintain the The signaling connection of the user equipment, wherein the signaling connection with the user equipment is maintained, that is, the core network control entity does not initiate the signaling connection release process, and for the user equipment, the established RRC connection is not released.
  • the timer T3440 or T3340 specified in the existing standard is not activated; if the user equipment maintains the predetermined signaling connection time and has started the timer T3440 or T3340, the second device sends the second device. For messages, the timer T3440 or T3340 can be deleted.
  • the server receives the request sent by the core network control entity to indicate that the server sends downlink data to the user equipment, or the first user equipment reachability notification sent by the home subscription server or the home location server after receiving the core network control entity After the second user equipment reachable notification message sent after the message, the downlink data is sent.
  • SAE System Architecture Evolution
  • GPRS general packet radio service
  • the core network control entity can directly request the radio access network (Radio Access Network, referred to as "RAN”) side.
  • RAN Radio Access Network
  • an eNodeB or a Radio Network Controller establishes an evolved universal land-based radio access network radio access bearer (E-RAB) corresponding to the bearer transmitting the corresponding data packet or establishes a transmission.
  • E-RAB evolved universal land-based radio access network radio access bearer
  • the MME sends an initial context setup message to the eNodeB according to the received bearer identifier (Identifier, referred to as "ID") in the received downlink data notification.
  • ID bearer identifier
  • the SGSN sends a radio access bearer assignment message to the RNC to establish the corresponding RAB (user equipment) , user plane between RNC and SGSN).
  • the method 100 may further include:
  • the core network control entity may maintain a signaling connection with the user equipment when determining that the first indication information is set, where the core network control entity may maintain the second message by sending the second indication information to the user equipment.
  • the signaling connection of the user equipment maintains a signaling connection with the user equipment, that is, the core network control entity does not initiate a signaling connection release process, and for the user equipment, the established RRC connection is not released. That is, the timer T3440 or T3340 specified in the existing standard is not activated; if the user equipment maintains the predetermined signaling connection time and has started the timer T3440 or T3340, the second message sent by the user equipment is received.
  • the timer T3440 or T3340 can be deleted.
  • the core network control entity may perform a process of establishing an RAB of all the carried E-RAB or PDP contexts while transmitting the second message including the second indication information to the user equipment, or may determine that the first indication information is set.
  • the process of establishing the RAB of the E-RAB or the PDP context of the bearer is performed.
  • the radio bearer between the user equipment and the eNodeB corresponding to all the active bearers of the user is established, and the eNodeB and the service gateway (Serving)
  • the radio bearer between the user equipment and the RNC corresponding to all activated PDP contexts of the user, and the Iu between the RNC and the SGSN are used for the UMTS network.
  • User plane connection For bearers that have not successfully established E-RAB/RAB, the user equipment and network will release or PDP context release.
  • the server that triggers the buffering of the downlink data to send the downlink data to the user equipment may include:
  • the server When the user equipment currently accesses the network as a GPRS network, and determines that the user equipment has established a PDP context, triggering the server to send a buffer to be sent to the user setting Prepared downstream data.
  • the user equipment receives the second message (TAU/RAU response message or attach accept message) that is sent by the core network control entity and includes the second indication information.
  • the core network control entity determines that the user equipment has established a PDP context, that is, the SGSN receives an active PDP context accept message sent by the user equipment.
  • the server is triggered to send downlink data.
  • the parameters used by the user equipment to initiate the activation of the PDP context may be pre-configured in the user equipment.
  • the method for transmitting data in the embodiment of the present invention determines whether the first indication information is set after the first message sent by the user equipment is received, where the first indication information indicates that the server cache is to be sent to the user.
  • the downlink data of the device maintains the signaling connection with the user equipment when determining that the first indication information is set, and determines that the first data indicating that the server caches downlink data to be sent to the user equipment is not stored.
  • the third message including the third indication information indicating that the server does not have downlink data to be sent to the user equipment is sent to the user equipment, so that the user equipment receives the After the third message indicating the information, the receiver is turned off or enters the power saving mode or is turned off, thereby saving power, thereby saving power of the user equipment. Further, the core network control entity establishes a bearer required for transmitting downlink data when determining that the server has downlink data to be sent to the user equipment, thereby saving time required for transmitting downlink data. Further, in the embodiment of the present invention, after determining that the user equipment is within the allowable communication time range, determining whether the first indication information is set may reduce the burden on the network.
  • the first message may be a TAU/RAU request message, an attach request message, or a service request message, so that the server may increase the chance of sending the buffered downlink data to the user equipment, to avoid data being Invalid or deleted.
  • the method 100 for transmitting data according to an embodiment of the present invention has been described above from the core network control entity side in conjunction with FIG.
  • a method for transmitting data according to an embodiment of the present invention will be described below from the user equipment side in conjunction with FIG.
  • FIG. 2 is a schematic flow diagram of a method 200 for transmitting data in accordance with an embodiment of the present invention.
  • the method can be performed by a user equipment.
  • the method 200 includes: S210. Send a first message to a core network control entity.
  • the receiver or the receiver when the first message is sent to the core network control entity, when receiving the third message that is sent by the core network entity according to the first message and includes the third indication information, the receiver or the receiver is closed. Entering the power saving mode or shutting down, wherein the third indication information indicates that there is no downlink data to be sent to the user equipment, so that the power of the user equipment can be saved.
  • the method 200 may further include:
  • the timer T3440 or T3340 specified in the standard is not started. Keep the RRC connection not released, and wait for the downlink data sent by the server.
  • the user equipment keeps the RRC connection from being released by the user equipment, which saves the paging process and the user equipment establishes the RRC connection again, which can further save power.
  • the method 200 when receiving the second message that is sent by the core network control entity according to the first message and includes the second indication information, the method 200 may further include:
  • the packet data protocol context procedure is initiated to establish a packet data protocol context when there is no packet data protocol context reservation.
  • the first message may be a tracking area update/routing area update (TAU/RAU) request message
  • the second message may be a TAU/RAU accept message; or the first message may be an attach request.
  • the second message may be an attach response message; or the first message may be a service request message, and the second message may be straight Send a message or a service accept message.
  • FIG. 3 is a diagram of the power consumption of the user equipment according to the embodiment of the present invention.
  • a schematic flow diagram of a method 300 for transmitting data The method 300 is performed by a server, for example, an SCS or an MTC SERVER, as shown in FIG. 3, the method 300 can include:
  • the first user equipment reachability notification request message is sent to the home subscription server or the home location register to which the user equipment belongs, so that the home subscription server or the home location register sends the second user to the core network control entity to which the user equipment belongs.
  • the device can reach the notification request message, so that the core network control entity sets the first indication information according to the second user equipment reachability notification request message, where the first indication information indicates that the server caches the downlink data to be sent to the user equipment, and Receiving, by the home subscription server or the home location register, the second user equipment reachability notification message sent after receiving the first user equipment reachability notification message sent by the core network control entity according to the first indication information, to the user
  • the device sends the downlink data; or
  • the downlink data of the device and the first indication information indicates that the downlink data to be sent to the user equipment is buffered in the server, and when the downlink data sent by the core network control entity according to the first indication information is sent, the request message is sent. Sending the downlink data to the user equipment.
  • the server when determining that there is downlink data to be sent to the user equipment, if the server does not currently send data to the user equipment, the corresponding data may be cached;
  • the server may send the data cache indication information to the core network control entity, so that the core network control entity may set the first indication information according to the data cache indication information, and receive the After the first message, the signaling connection with the user equipment may be maintained according to the first indication information, and the server is requested to send downlink data to the user equipment, so that the core network control entity may use the maintained signaling connection to
  • the downlink data sent by the server to be sent to the user equipment is sent to the user equipment.
  • the server when determining that the downlink data is to be sent to the user equipment, if the current time is not within the time range for sending the data to the user equipment, the server may cache the corresponding data; Sending a first user equipment reachability notification request message to the home subscription server or the home location server to which the user equipment belongs, the first user equipment reachability notification request message may carry the identity information of the user equipment or the address information of the server, The home subscription server or the home location server to which the user equipment belongs sends a second user equipment reachability notification request message to the core network control entity, where the second user equipment reachability notification request may include the identity information of the user equipment; the core network control entity is After receiving the second user equipment reachability notification request message sent by the home subscriber server or the home location server, the first indication information for indicating the downlink data to be sent by the server to the user equipment may be set.
  • the device may maintain a signaling connection with the user equipment according to the first indication information, and request the server to send downlink data to the user equipment, so that the core network control entity may utilize
  • the maintained signaling connection sends the downlink data sent by the server to the user equipment to the user equipment.
  • the first user equipment reachability notification request message is sent to the home subscription server or the home location register, so that the home subscription server or the home location register can send the second user equipment to the core network control entity.
  • the user equipment sends the downlink data; or sends the data cache indication information to the core network control entity, so that the core network control entity sets the first indication information according to the data cache indication information, where the data cache indication information indicates that the server caches Have to The downlink data sent to the user equipment, and the first indication information indicates that the server has downlink data to be sent to the user equipment, and receives the downlink data
  • the method 300 when the method 300 includes sending the first user equipment reachability notification request message to the home subscription server or the home location register, the method 300 may further include:
  • the first user equipment reachability notification request message may further include an expiration date of the downlink data, so that the home subscription server or the home location register determines, when the validity period of the downlink data expires according to the first user equipment reachability notification request message,
  • the first user equipment reachability notification cancellation message is sent to the user equipment, so that the core network control entity deletes the first indication information according to the first user equipment reachability notification cancellation message.
  • the method 300 when the method 300 includes sending the data cache indication information to the core network control entity, the method further includes: sending, after determining that the validity period of the downlink data expires, sending the first to the core network control entity a fourth message, the fourth message is used to indicate that the core network control entity deletes the first indication information; or the data cache indication information may further include an expiration date of the downlink data, so that the core network control entity setting is further used to indicate The first indication information of the validity period of the downlink data, and deleting the first indication information when the validity period of the downlink data expires.
  • the first user equipment reachability notification request message is sent to the home subscription server or the home location register, so that the home subscription server or the home location register can send the second user equipment to the core network control entity.
  • the notification request message is sent, so that the core network control entity sets the first indication information according to the second user equipment reachability notification request message, where the first indication information indicates that the downlink data to be sent to the user equipment is cached, and is received Receiving, by the home subscription server or the home location register, the first user equipment that is sent by the core network control entity according to the first indication information Receiving, by the second user equipment reachable notification response message, after the notification response message, sending the downlink data to the user equipment; or sending data cache indication information to the core network control entity, so that the core network control entity is configured according to the data
  • the buffer indication information sets the first indication information, where the data buffer indication information indicates that the downlink data to be sent to the user equipment is buffered, and the first indication information indicates that other entities have downlink data to be sent to the user equipment
  • the method 400 can include:
  • the downlink data is obtained from the server, and the second message carrying the downlink data is sent to the user equipment, so that the user equipment is used.
  • the downlink data is obtained from a second message carrying the downlink data.
  • the core network control entity after receiving the first message sent by the user equipment, for example, a TAU/RAU request message, an attach request message, or a service request message, may Determining whether the first indication information indicating that the server caches the downlink data to be sent to the user equipment is stored; determining that the first indication information is stored, and the first indication information further indicating the data volume of the downlink data
  • the core network control entity may determine whether the amount of data of the downlink data to be sent by the server to the user equipment is within a range of data amount that the second message can carry, and the cached by the server is sent to the user.
  • the core network control entity may obtain, from the server, the downlink data that is buffered by the server and sent to the user equipment, and then The user equipment sends a second message carrying the downlink data, thereby After receiving the second message that is sent by the core network control entity and carrying the downlink data, the user equipment may obtain the downlink data from the second message.
  • the method 400 may further include:
  • the second indication information indicates that the downlink data is to be sent to the user equipment;
  • the third message is used to indicate that the server sends the downlink data to the user equipment, so that the user equipment is configured according to the first indication information or the second indication.
  • the information remains communicable to wait to receive the downlink data sent by the server.
  • the embodiment of the present invention may cache the server directly by the core network control entity through a Non-Access Layer ("NAS") signaling, for example, a TAU/RAU response message or an attach accept message.
  • NAS Non-Access Layer
  • the downlink data to be sent to the user equipment is sent to the user equipment, which can reduce the waiting time of the user equipment, and the paging process when the data is to be sent, and the process of establishing the user plane, which can achieve power saving effect. And save network resources.
  • NAS Non-Access Layer
  • FIG. 5 is a schematic flow diagram of another method 500 for transmitting data in accordance with an embodiment of the present invention.
  • the method 500 is performed by a server, such as an SCS or an MTC SERVER.
  • the method 500 can include:
  • the first indication information is sent to the core network control entity, where the first indication information indicates that the server caches downlink data to be sent to the user equipment, and indicates the data volume of the downlink data, so that the core network control entity stores the first An indication message;
  • the core network control entity After receiving the first message sent by the user equipment, the core network control entity determines, according to the first indication information, that the data volume of the downlink data is within a range that can be carried by the second message, and obtains the downlink data.
  • the second message carrying the downlink data is sent to the core network control entity, so that the core network control entity sends the second message carrying the downlink data to the user equipment.
  • the method 500 may further include:
  • the core network control entity determines, according to the first indication information, the third message that is sent when the data volume of the downlink data is not within the range that can be carried by the second message, Sending the downlink data to the user equipment, where the third message is used to request the server to send the downlink data to the user equipment.
  • the method 500 may include:
  • the fifth message is sent to the core network control entity, where the fifth message is used to instruct the core network control entity to delete the first indication information.
  • the first indication information is further used to indicate a validity period of the downlink data, so that the core network control entity deletes the first period when the validity period of the downlink data is determined according to the first indication information An indication message.
  • the method of the embodiment of the present invention sends the first indication information to the core network control entity, where the first indication information indicates that the server caches downlink data to be sent to the user equipment, and indicates data of the downlink data. And the core network control entity stores the first indication information, after the core network control entity receives the first message sent by the user equipment, determining whether the data volume of the downlink data is in the second message. Within the range of the bearer, when the downlink data volume is within the range that can be carried by the second message, the server sends a request for acquiring the downlink data, and the server receives the downlink data sent by the core network control entity.
  • the downlink data is sent to the core network control entity, so that the core network control entity can directly pass the non-access layer (Non-Access Layer, referred to as "NAS") signaling, for example , TAU/RAU response message or attach accept message, etc., the server cached to be sent to the user equipment
  • NAS Non-Access Layer
  • the user equipment may reduce the wait time, and to transmit a paging (Paging) process when the data, the user plane setup procedure, a power saving effect can be achieved and saving network resources.
  • Paging paging
  • the embodiment of the present invention further provides another method for a user to transmit data, where the method may include:
  • the downlink data is sent to the user equipment.
  • the uplink data may be sent to the server; after receiving the uplink data sent by the user equipment, the server determines whether to cache. There is downlink data to be sent to the user device, then the server can send the cache to the The downlink data of the user equipment is sent to the user equipment, and the server may send the buffered downlink data for the user equipment to the user equipment by using the established PDP context or bearer.
  • the method for transmitting data in the embodiment of the present invention can achieve the effect of saving the power of the user equipment and increase the probability of the server transmitting the buffer data.
  • FIG. 6 is a schematic flow diagram of a method 600 for transmitting data in accordance with an embodiment of the present invention. As shown in FIG. 6, the method 600 includes:
  • the server (for example, SCS or MTC SERVER) has downlink data to be sent to the user equipment. Since the current time is not allowed to send data to the user equipment, the server caches the corresponding downlink data.
  • the server sends data cache indication information to a core network control entity (eg, MME or SGSN) to which the user equipment is currently attached, where the data cache indication information indicates that the server caches downlink data to be sent to the user equipment.
  • the data cache indication message may be sent to the core network control entity (SGSN or MME) through a Machine Type Communication-InterWorking Function (MTC-IWF), and the MTC-IWF queries the home subscription server.
  • MTC-IWF Machine Type Communication-InterWorking Function
  • HSS Home Subscriber Server
  • the core network control entity determines the core network control entity to which the user equipment is currently attached. After receiving the data cache indication information sent by the server, the core network control entity may set first indication information indicating that the server has downlink data to be sent to the user equipment.
  • the user equipment initiates a TAU/RAU process, and the user equipment sends a TAU/RAU request to the core network control entity.
  • the core network control entity Before the core network control entity sends a TAU/RAU accept message to the user equipment, determine whether the current server setting is sent to indicate that the server cache is to be sent.
  • the first indication information of the downlink data of the user equipment may perform S606a to S608a or perform S606b to S609b when determining that the first indication information is set; and when it is determined that the first indication information is not set, S611 to S615;
  • the server may further check whether the user equipment is currently according to the subscription data of the user equipment.
  • the allowable communication time is determined whether the first indication information is currently set only when it is within the allowed communication time range of the user equipment; otherwise, the subsequent process is not performed, and the normal process of the TAU/RAU process is performed.
  • the core network control entity may forward the first indication information to the user equipment by using a TAU/RAU accept message, or may generate a second indication that the downlink data is to be sent to the user equipment. And transmitting the second indication information to the user equipment by using a TAU/RAU accept message, where the identity of the server may also be included in the TAU/RAU accept message. And, the core network control entity instructs the server to send the buffered downlink data for the user equipment to the user equipment.
  • S607a After receiving the TAU/RAU accept message carrying the first indication information or the second indication information, the user equipment maintains the communicable state to wait for the server to send the downlink data.
  • the server sends the downlink data according to the normal process.
  • the server sends the downlink data according to the normal process.
  • S606a-S608a is a method for transmitting data according to an embodiment of the present invention.
  • the core network control entity determines that the first indication information is set by itself, an implementation manner of the subsequent process of the method, S606b-S610b is another Implementation.
  • the core network control entity may forward the first indication information to the user equipment by using a TAU/RAU accept message, or may generate a second indication that the downlink data is to be sent to the user equipment. And transmitting the second indication information to the user equipment by using a TAU/RAU accept message, where the identity of the server may also be included in the TAU/RAU accept message. And, the core network control entity instructs the server to send the buffered downlink data to be sent to the user equipment to the user equipment.
  • S607b After receiving the TAU/RAU accept message carrying the first indication information or the second indication information, the user equipment maintains the communication state and keeps the established RRC connection unchanged. Release, BP, may not start the timer T3440 or T3340 specified in the existing standard.
  • S608b The core network control entity receives the downlink data notification or the downlink data sent by the server.
  • the core network control entity After receiving the downlink data notification or the downlink data sent by the server, the core network control entity establishes a corresponding radio bearer for the data packet to be transmitted. Specifically, the core network control entity may directly request the RAN side network element (eNodeB or RNC) to establish an E-RAB corresponding to the bearer transmitting the corresponding data packet or establish an RAB corresponding to the PDP context of transmitting the corresponding data packet. For example, for the SAE network, the MME sends an initial context setup message to the eNodeB according to the received EPS bearer ID in the downlink data notification to establish a corresponding E-RAB (radio bearer).
  • eNodeB or RNC the RAN side network element
  • RAB radio bearer
  • the SGSN sends a radio access bearer assignment message to the RNC to establish a corresponding RAB (user plane between the user equipment, the RNC, and the SGSN).
  • RAB user plane between the user equipment, the RNC, and the SGSN.
  • the execution process does not affect other bearer or PDP context information of the user equipment and the network side.
  • downlink data can be sent by the core network to the user equipment.
  • the core network control entity After determining that the first indication information is not set, the core network control entity generates third indication information, where the third indication information indicates that no data is to be sent to the user equipment, and the third indication is received by the TAU/RAU accept message. Information is sent to the user device.
  • the core network control entity sends a user equipment context release command to the RAN side network element.
  • the RAN side network element releases an RRC connection with the user equipment.
  • the RAN side network element sends a user equipment context release complete message.
  • the user equipment turns off the receiver or enters the power saving mode or shuts down to save power.
  • the core network control entity still saves the first
  • An indication can be solved in two ways: The server may send a message to the core network control entity to instruct the core network control entity to delete the first indication information stored on the network indicating that the server caches downlink data to be sent by the user equipment. Similarly, the indication message is initiated by the server, through
  • the MTC-IWF sends the core network control entity to which the current user equipment is attached. Then, the core network control entity may delete the first indication information according to the indication of the server.
  • the validity period of the downlink data that the server sends to the user equipment is sent to the core network control entity along with the first indication information.
  • the core network control entity deletes the saved data. The first indication information.
  • the core network control entity determines that the first indication information is set by itself in S605
  • the subsequent execution flow is implemented by means of S606a-S608a, or the manner of S606b-S610b. Implementation can also be achieved in other ways. Two specific implementations are described below.
  • the core network control entity sends a signaling connection with the user equipment after transmitting the TAU/RAU accept message including the first indication information or the second indication information to the user equipment, and is in the The user equipment sends a TAU/RAU accept message including the first indication information or the second indication information to establish a user plane bearer or a PDP context.
  • the core network control entity performs a process of establishing an E-RAB or a PDP context RAB of all bearers while returning a TAU/RAU accept message carrying the first indication information or the second indication information to the user equipment.
  • the radio bearer between the user equipment and the eNodeB corresponding to all the bearers and the S1 user plane connection between the eNodeB and the SGW are established.
  • the UMTS network all PDP contexts are established.
  • the bearer that does not successfully establish the E-RAB/RAB the user equipment and the network will release the bearer or PDP context information.
  • the eNodeB/RNC completes.
  • the core network control entity instructs the server to send the buffered downlink data to be sent to the user equipment to the user equipment, and the server sends the downlink data to the user equipment according to the indication of the core network control entity. Corresponding data.
  • Mode 2 When the current access network of the user equipment is a GPRS network, if the current user equipment does not have any PDP context information, the user equipment is received and carried After the first indication information or the TAU/RAU accept message of the second indication information, the process of activating the PDP context is initiated to establish a PDP context, and the PDP context setup is completed, that is, the SGSN receives the activated PDP context accept sent by the user equipment ( After the message is sent, the SGSN sends the corresponding data to the user equipment according to the indication of the core network control entity by instructing the server to send the buffered downlink data to be sent to the user equipment. Data is sent to the user equipment through the established PDP context.
  • the parameters used by the user equipment to initiate the PDP context activation process may be pre-configured in the user equipment.
  • the process described in the method 600 for transmitting data in the embodiment of the present invention is also applicable to an attach procedure of a user equipment, gp, after obtaining, by attaching a message, that the user equipment has been online or opened the receiver,
  • the core network control entity triggers the server to send downlink data. This mode may occur when the user equipment is attached to the network and then attached to the network. In this manner, the probability of triggering the server to send downlink data is increased, and the effect of saving the power of the user equipment can be achieved at the same time.
  • the SGSN determines whether the first indication information is stored. If the first indication information is stored, the SGSN may carry in the attach accept message. The first indication information or the second indication information, after receiving the attach accept message sent by the SGSN and carrying the first indication information or the second indication information, the user equipment maintains a communicable state, or further maintains an RRC connection. The SGSN is configured to send the downlink data to the user equipment. If the first indication information is not set, the SGSN may carry the third indication information in the attach accept message, and the user equipment receives the indication that there is no indication.
  • the receiver After the data is to be sent to the attachment indication message of the third indication information of the user equipment, the receiver is turned off, or enters the power saving mode or is turned off.
  • the specific process is the same as the method 600 for transmitting data in the foregoing embodiment. For brevity, details are not described herein again.
  • the MME determines whether the first indication information is set. If the first indication information is set, the MME may be in the attach accept message. Carrying the first indication information or the second indication information, after receiving the attach accept message sent by the MME and carrying the first indication information or the second indication information, the user equipment keeps the receiver open, or further maintains the RRC The connection is not released, and the E-RAB is not released, and waiting for the server to send Row data, and the MME triggers the server to send downlink data to the user equipment; if the first indication information is not stored, the third indication information indicating that no data is to be sent to the user equipment may be carried in the attach accept message, After receiving the attach accept message carrying the third indication information of calcium, the user equipment turns off the receiver, or enters the power saving mode or shuts down.
  • the specific process is consistent with the process of the method 600 in the foregoing embodiment. For the sake of brief introduction, details are not described herein again.
  • the embodiment of the present invention can also be applied to a scenario in which a core network control entity (MME, SGSN) of a serving user equipment changes.
  • MME core network control entity
  • the server sends the first indication information to the source core network control entity.
  • the user equipment sends the TAU/ to the new core network control entity in S603.
  • the new core network control entity needs to obtain information about the user equipment from the source core network control entity, where the source core network control entity returns information of the user equipment, and the information of the user equipment includes the server.
  • the new core network control entity is configured to set the first indication information, and the other processes are consistent with the method 600. For brevity, details are not described herein again.
  • FIG. 7 is a schematic flow diagram of a method 700 for transmitting data in accordance with an embodiment of the present invention. As shown in FIG. 7, the method 700 can include:
  • the server (for example, SCS or MTC SERVER) has downlink data to be sent to the user equipment. Since the current time is not allowed to send data to the user equipment, the server caches the corresponding downlink data.
  • the server sends the first indication information (that is, the data cache indication information described above) to the core network control entity that is currently attached to the user equipment, where the first indication information indicates that the server caches the downlink data that is to be sent by the user equipment. And the first indication information further indicates a buffered amount of data to be sent by the user equipment.
  • the data cache indication information described above is the first indication information described herein, that is, the core network control entity directly stores the data cache indication information sent by the server as the first indication. information.
  • the user equipment starts to perform a TAU/RAU procedure, and sends a TAU/RAU request message to the core network entity.
  • the core After receiving the TAU/RAU request message sent by the user equipment, the core The network control entity checks whether the first indication information indicating that the server caches downlink data to be sent by the user equipment is stored. If the first indication information is stored, the core network control entity further checks the downlink data that is buffered by the server and sent to the user equipment. Whether the amount of data conforms to the amount of data transferred by the NAS message (TAU/RAU accept message), if yes, execute S705-S707, if not, the subsequent process can be performed by referring to method 600; if the core network control entity determines itself If the first indication information is not stored, then S708 and S709 are performed.
  • the core network control entity determines, by using a NAS message, a solution that is sent by the server to send the downlink data of the user equipment to the user equipment.
  • the core network control entity sends an indication information to the server, indicating that the server sends the cached information to the server.
  • the downlink data of the user equipment is sent to the core network control entity, where the server may send the buffered downlink data to be sent to the user equipment to the core network control entity by using the control plane response message, and for the UMTS network, the server receives the core.
  • the cached downlink data to be sent to the user equipment may also be sent to the core network control entity.
  • the core network control entity performs other steps of the TAU/RAU process. Among them, S705 can be executed simultaneously with S706.
  • the core network control entity returns a TAU/RAU accept message to the user equipment, and carries the downlink data to be sent to the user equipment in the TAU/RAU accept message, thereby receiving the response through the NAS signaling (TAU/RAU) Message) Send the downlink data to the user equipment.
  • TAU/RAU NAS signaling
  • the core network control entity performs other steps of the TAU/RAU according to the normal process.
  • the core network control entity generates third indication information indicating that no data is to be sent to the user equipment, and sends the third indication information to the user equipment by using a TAU/RAU accept message, where the user equipment sends the core network control entity to send After the TAU/RAU with the third indication message accepts the message, the receiver is turned off or enters the power saving mode or is turned off to achieve the power saving effect.
  • the method 700 for transmitting data may also be used for a process in which a user equipment attaches to a network and then attaches, that is, by attaching. If the user equipment is online or the receiver is turned on, the core network control entity (MME or SGSN) determines whether downlink data is to be sent to the user equipment, and if so, obtains downlink data from the server, and carries it by attach accept message. Downstream data, the downlink data is sent to the user equipment.
  • MME mobile phone
  • SGSN the core network control entity
  • FIG. 8 is a schematic flow diagram of a method 800 for transmitting data in accordance with an embodiment of the present invention. As shown in FIG. 8, the method 800 can include:
  • the server (for example, SCS or MTC SERVER) has downlink data to be sent to the user equipment. Since the current time is not allowed to send data to the user equipment, the server caches the corresponding downlink data.
  • the server sends data cache indication information to a core network control entity to which the user equipment is currently attached, where the data cache indication information indicates that the server caches downlink data to be sent to the user equipment.
  • the core network control entity may set first indication information indicating that the server caches downlink data to be sent to the user equipment.
  • the service request is initiated, where the service request message may be sent to the core network entity by using the RAN entity.
  • the core network control entity checks whether a first indication information indicating that the server caches downlink data to be sent to the user equipment is set.
  • the first indication information or the second indication information may be sent to the user equipment by using the service acceptance message, and thus S805 and S806 may be implemented in S804.
  • the user equipment After receiving the indication information, the user equipment does not release the RRC connection and the PDP context or bearer within a specified time.
  • the specified time does not contradict the business process, gP, even if the specified time expires, but the business process does not end, the user equipment does not initiate the release process of the PDP context or bearer.
  • the core network entity notification server sends the buffered downlink data to be sent to the user equipment to the user equipment, where S806 and S807 can be executed simultaneously, or S807 can be executed first, and then S806 is performed, which should be determined according to specific conditions.
  • the embodiments of the present invention are not limited thereto.
  • S808 The server sends the cached downlink data for the user equipment to the user equipment, and the core network control entity deletes the saved first indication information indicating that the server caches the user equipment to be sent.
  • the user equipment can send the uplink data to the server.
  • the server After receiving the uplink data sent by the user equipment, the server determines whether the downlink data to be sent by the user equipment is cached. If yes, the server sends the buffered downlink data to be sent to the user equipment to the user equipment, where The transmission of downlink data in the network may utilize an established PDP context or bearer.
  • the server sends the buffered downlink data to be sent to the user equipment to the user equipment.
  • the server instructs the core network control entity to delete the saved first indication information, where the core network control entity is a core network control entity of the current serving user equipment.
  • FIG. 9 is a schematic flow diagram of a method 900 for transmitting data in accordance with an embodiment of the present invention. As shown in FIG. 9, the method 900 includes:
  • the server (for example, SCS or MTC SERVER) has downlink data to be sent to the user equipment. Since the current time is not allowed to send data to the user equipment, the server caches the corresponding downlink data.
  • S902 The server sends a registration request message to a home subscription server (HSS) or a home location server (HLR) to which the user equipment belongs while buffering downlink data.
  • HSS home subscription server
  • HLR home location server
  • the registration request message may be sent to the HSS or the HLR through the MTC-IWF.
  • the registration request message includes at least the address information of the server and the identity information of the user equipment, and may further include an expiration date of the data to be sent.
  • the HSS or HLR saves the server The address information and the identity information of the user equipment. If the registration request message includes the validity period of the data to be sent, the validity period of the data to be sent may be further saved and set.
  • URRP UE Reachability Request Parameter
  • the user equipment reachable request parameter identifier indicating that the user equipment is reachable
  • the downlink data to be sent to the user equipment where the user equipment subsequently sends a TAU/RAU request or The sending of the uplink data request indicates that the user equipment is reachable.
  • This document uses the TAU/RAU request message as an example.
  • the HSS or the HLR sends a user equipment reachability notification request message to the core network control entity where the user equipment is located according to the registration request message of the server.
  • the user equipment reachability notification request message may include the identity information of the user equipment.
  • the core network control entity After receiving the user equipment reachability notification request message, the core network control entity sets the URRP (that is, the first indication information described above), which may indicate that the server has downlink data to be sent to the user equipment, and also indicates that the The identity indicates that the core network control entity needs to notify the HSS or HLR when the UE is reachable.
  • the URRP that is, the first indication information described above
  • the HSS or the HLR may save the validity period of the to-be-sent data. If the validity period of the to-be-sent data expires, the data is still not sent, and the HSS or HLR may identify the URRP identifier. Delete, and instruct the core network control entity to delete the stored URRP identifier.
  • the user equipment sends a TAU/RAU request to the core network entity.
  • the core network control entity performs the normal process of the TAU/RAU process.
  • the core network control entity checks whether a URRP identifier is currently set. If URRP is set, S909 to S916 are executed, otherwise S917 to S920 are executed.
  • the core network control entity needs to further check whether it is the allowed communication time of the user equipment. If it is within the allowable communication time range, execute S909 to S916, otherwise the TAU/RAU process is completed according to the prior art.
  • the core network control entity returns a TAU/RAU accept message.
  • the core network control entity keeps not transmitting the signaling connection with the user equipment, that is, does not send an S1 release request or an Iu release request message to the RAN side entity.
  • the core network control entity sends, according to the detected URRP, indication information indicating that downlink data is to be sent to the user equipment, that is, the second indication information that is sent to the user equipment, so that the user equipment maintains the signaling connection. Not released. Among them, can pass A new NAS message (such as a downlink NAS transport message) carries the indication information and sends it to the UE.
  • a new NAS message (such as a downlink NAS transport message) carries the indication information and sends it to the UE.
  • the indication information may also be sent to the user equipment by carrying the indication information in the TAU/RAU accept message in S909.
  • the user equipment After receiving the indication information sent by the core network control entity indicating that downlink data is to be sent to the user equipment, the user equipment keeps the signaling connection from being released, that is, does not start the timer T3440/T3340. If the T3440/T3340 timer is started after the user equipment receives the TAU/RAU accept message, the T3440 timer is deleted after receiving the indication information.
  • the core network control entity sends a user equipment reachability notification message to the HSS or the HLR according to the detected identifier, g ⁇ URRP, to notify the user that the device is reachable.
  • S911 and S913 can be executed synchronously without prioritization.
  • the HSS or the HLR sends a user equipment reachability notification message to the designated server according to the information about the UE that is saved, to notify the user that the device is reachable, to trigger the server to send the saved downlink data to the user equipment.
  • the core network control entity activates the E-RAB/RAB of the radio side corresponding to all bearers or PDP contexts, that is, performs the process of establishing an E-RAB/RAB for all active bearer/PDP contexts, for SAE
  • the network refers to establishing a radio bearer between the UE and the eNodeB and an S1 user plane connection between the eNodeB and the SGW.
  • the radio bearer between the UE and the RNC and the Iu user plane connection between the RNC and the SGSN are established.
  • the bearer of the E-RAB/RAB is successfully established, and the UE and the network release the bearer or PDP context.
  • This step is an optional step, and if this step is performed, S913a and S914 are executed after this step.
  • the process of establishing a user plane bearer may also be in other manners as described in other embodiments, and details are not described herein again.
  • the server sends the saved downlink data to the user equipment.
  • the core network control entity returns a TAU/RAU accept message.
  • a subsequent execution flow of the method 900 for transmitting data according to an embodiment of the present invention when the core network control entity determines that the server has no downlink data to transmit to the user equipment will be described below in conjunction with S917 through S922.
  • the core network control entity returns a TAU/RAU accept message.
  • the core network control entity does not save the URRP identifier, send, to the user equipment, third indication information that the server does not have downlink data to send, the third finger
  • the information can be achieved in the following ways:
  • the NAS transport message carries the third indication information and sends it to the UE.
  • the TAU/RAU accept message carrying indication information is sent to the third indication information for instructing the UE, and after completing the TAU/RAU process, the power saving state may be entered, such as the receiver being turned off or other power saving state. Or shut down.
  • the core network control entity initiates a signaling connection release process of the S1 or Iu interface, and the RAN side entity initiates a release process of the RRC connection.
  • the user equipment turns off the receiver or enters another power saving mode or shuts down or turns off the receiver after releasing the RRC connection according to the third indication information received in S918.
  • the S9300 and the S912 may not be executed, and the core network control entity may select whether to send the indication information indicating that the server has downlink data to be sent to the user equipment according to the length of the signaling connection that the user equipment can maintain. . For example, if the user equipment can maintain the length of the signaling connection as 11 seconds, since 11 seconds is not less than the predetermined threshold of 10 seconds, S911 and S912 may not be performed.
  • the length of the signaling connection that the user equipment can keep can be determined according to the UE subscription data, the network configuration, or the UE reporting.
  • the user equipment may maintain a signaling connection for a predetermined time to wait for receiving downlink data sent by the server. After maintaining the signaling connection time of the predetermined time, the UE may enter an idle mode or a power saving state or shut down to further save power.
  • the method 900 is to determine whether the data to be sent is expired according to the validity period of the downlink data carried in the registration request message, and the method in the embodiment of the present invention may not carry the validity period of the downlink data in the registration request message, and When the server determines that the validity period of the downlink data expires, the server directly sends a user equipment reachability notification cancellation message to the HSS or the HLR.
  • the HSS or the HLR may store the user equipment.
  • the URRP identifier is deleted, and the core network control entity is instructed to delete the stored URRP identifier.
  • the home subscription server or the home location server receives the user equipment reachability notification cancellation message sent by any one of the servers, or the home subscription server or the home location.
  • the server determines either After the data to be sent by the server to the user equipment expires, the information related to the reachability of the user equipment of the any server may be deleted, and the home subscription server or the home location server deletes the multiple servers and is reachable to the user equipment. After the information is not received, the URRP identifier stored in the user is deleted, and the core network control entity is instructed to delete the stored URRP identifier.
  • FIG. 1 A schematic flow chart of a method for transmitting data according to an embodiment of the present invention has been described above with reference to Figs.
  • FIG. 10 is a schematic block diagram of a core network control entity 1000 in accordance with an embodiment of the present invention. As shown in FIG. 10, the core network control entity 1000 includes:
  • the first determining unit 1010 is configured to: after receiving the first message sent by the user equipment, determine whether the first indication information is set, where the first indication information indicates that the server caches downlink data to be sent to the user equipment;
  • the triggering unit 1020 is configured to: when the first determining unit determines that the first indication information is set, trigger a server that caches the downlink data to send the downlink data to the user equipment;
  • the holding unit 1030 is configured to maintain a signaling connection with the user equipment when the first determining unit determines that the first indication information is set.
  • the core network control entity of the embodiment of the present invention determines whether the first indication information is set after receiving the first message sent by the user equipment, where the first indication information indicates that the server cache is to be sent to the
  • the downlink data of the user equipment maintains the signaling connection with the user equipment when it is determined that the first indication information is set, thereby saving signaling consumption during the process of sending downlink data, and avoiding the message between the user equipment and the network entity.
  • the trigger unit 1020 is specifically configured to:
  • the trigger unit 1020 is specifically configured to:
  • the holding unit 1030 is specifically configured to:
  • the holding unit 1030 is specifically configured to:
  • the second message is sent to the user equipment when the length of the maintainable signaling connection preset for the user equipment is less than a predetermined threshold.
  • the core network control entity 1000 further includes: a first sending unit 1040, configured to send, when the first indication information is not set, the third indication information to the user equipment
  • the third message indicates that no downlink data is to be sent to the user equipment, so that the user equipment turns off the receiver or enters the power saving mode or shuts down according to the third indication information.
  • the second indication information further includes address information of the server.
  • the core network control entity 1000 further includes: a second determining unit 1050, configured to determine, when the user equipment is a time-controlled user equipment, whether the user equipment is within a permitted communication time range. ;
  • the first determining unit 1010 is specifically configured to:
  • the second determining unit 1050 determines that the user equipment is within the allowable communication time range, it is determined whether the first indication information is set.
  • the core network control entity 1000 further includes:
  • the first receiving unit 1061 is configured to receive a second user equipment reachability notification request message sent by the home subscription server or the home location register to which the user equipment belongs, after receiving the first user equipment reachability notification request message, and the first setting Unit 1062, used And setting the first indication information according to the second user equipment reachability notification request message received by the first receiving unit; or comprising:
  • the second receiving unit 1063 is configured to receive data cache indication information sent by the server that caches the downlink data, where the data cache indication information indicates that the server caches downlink data to be sent to the user equipment, and a second setting unit 1064, And configured to set the first indication information according to the data cache indication information.
  • the core network control entity 1000 further includes: a third receiving unit 1065, configured to receive a context response message sent by a source core network control entity served by the user equipment;
  • the third setting unit 1066 is configured to set the first indication information when the first indication information is included in the context response message received by the third receiving unit.
  • the core network control entity 1000 further includes: a first deleting unit 1071, configured to delete the first indication when determining that the validity period of the downlink data expires according to the first indication information
  • the first indication information is further used to indicate the validity period of the downlink data, where the validity period of the downlink data indicated by the first indication information is carried according to the data cache indication information sent by the server that caches the downlink data.
  • the validity period of the downlink data is set; or includes:
  • the fourth receiving unit 1072 is configured to receive, by the server that caches the downlink data, a fourth message that is sent after the expiration of the validity period of the downlink data, where the fourth message is used to indicate that the first indication information is deleted, and the second
  • the deleting unit 1073 is configured to delete the first indication information according to the fourth message received by the fifth receiving unit, or include
  • the fifth receiving unit 1074 is configured to receive a first user equipment reachability notification cancellation message sent by the home subscription server or the home location register to which the user equipment belongs, and a third deleting unit 1075, configured to receive according to the fifth receiving unit 1074.
  • the first user equipment can reach the notification cancellation message, and delete the first indication information.
  • the fifth receiving unit 1074 is specifically configured to:
  • the first user equipment that is sent after the downlink data expires according to the first user equipment reachability notification request message The reachable notification cancellation message, where the first user equipment reachability notification request message carries the validity period of the downlink data.
  • the core network control entity 1000 further includes: an establishing unit 1080, configured to: after receiving the downlink data notification message or the downlink data sent by the server that caches the downlink data, establish a corresponding transmission
  • the radio bearer corresponding to the evolved universal land-based radio access network of the data packet bears or establishes a radio access bearer corresponding to the packet data protocol context for transmitting the corresponding data packet; or, is used to establish a user plane bearer or a packet data protocol context .
  • FIG. 12 is a schematic block diagram of a core network control entity 1100 in accordance with an embodiment of the present invention. As shown in FIG. 12, the core network control entity 1100 includes:
  • the receiver 1110 is configured to receive a first message sent by the user equipment.
  • the processor 1120 is configured to determine, after the receiver 1110 receives the first message sent by the user equipment, whether the first indication information is set, where the first indication information indicates that the server caches downlink data to be sent to the user equipment; When it is determined that the first indication information is set, the signaling connection with the user equipment is maintained, and the server that buffers the downlink data is triggered to send the downlink data to the user equipment.
  • the core network control entity of the embodiment of the present invention determines whether the first indication information is set after receiving the first message sent by the user equipment, where the first indication information indicates that the server cache is to be sent to the
  • the downlink data of the user equipment maintains the signaling connection with the user equipment when it is determined that the first indication information is set, so that the power of the user equipment can be saved.
  • the core network control entity 1110 further includes a transmitter 1130, where the processor 1120 is specifically configured to instruct the sender 1130 to send downlink data to the server that caches the downlink data. Sending a request message to trigger the server that caches the downlink data to send the downlink data to the user equipment; the sender 1130 is configured to send downlink data to the server that caches the downlink data according to the instruction of the processor 1120. Sending a request message to trigger the server that caches the downlink data to send the downlink data to the user equipment; or
  • the processor 1120 is configured to instruct the sender 1130 to send a first user equipment reachability notification message to a home subscription server or a home location register to which the user equipment belongs, so that the home subscription server or the home location register is cached. Have this down The server of the data sends a second user equipment reachability notification message, so that the server that caches the downlink data sends the downlink data to the user equipment; the sender 1130 is configured to send the user equipment to the user equipment according to the indication of the processor 1120.
  • the home subscriber subscription server or home location register sends a first user equipment reachability notification message.
  • the core network control entity 1110 further includes a transmitter 1130, where the processor 1120 is specifically configured to instruct the sender 1130 to send the second information including the second indication information to the user equipment. a message indicating that the data is to be sent to the user equipment to maintain a signaling connection with the user equipment.
  • the transmitter 1130 is configured to send, according to the instruction of the processor 1120, the user equipment And a second message indicating information indicating that data is to be sent to the user equipment to maintain a signaling connection with the user equipment.
  • the processor 1120 is specifically configured to: when the length of the maintainable signaling connection preset for the user equipment is less than a predetermined threshold, instruct the sender 1130 to send the second message to the user equipment.
  • the core network control entity 1110 further includes a transmitter 1130, where the processor is specifically configured to: when the first indication information is not set, instruct the sender 1130 to the user
  • the device sends a third message that includes the third indication information, where the third indication information indicates that no downlink data is to be sent to the user equipment, so that the user equipment turns off the receiver or enters the power saving mode or shuts down according to the third indication information;
  • the transmitter 1130 is configured to send, according to the indication of the processor 1120, a third message that includes third indication information to the user equipment, where the third indication information indicates that no downlink data is to be sent to the user equipment, so as to facilitate the user.
  • the device turns off the receiver or enters the power saving mode or shuts down according to the third indication information.
  • the second indication information further includes address information of the server.
  • the processor 1120 is further configured to determine, when the user equipment is a time-controlled user equipment, whether the user equipment is in a permitted communication time range, and specifically, in determining that the user equipment is in a permitted communication time. When the range is within, it is determined whether the first indication information is set.
  • the receiver 1110 is further configured to receive, by the home subscription server or the home location register to which the user equipment belongs, a second user equipment reachability notification request message sent after receiving the first user equipment reachability notification request message, where And the processor 1120, And is further configured to set the first indication information according to the second user equipment reachability notification request message received by the receiver 1110; or
  • the receiver 1110 is further configured to receive data cache indication information sent by the server that caches the downlink data, where the data cache indication information indicates that the server caches downlink data to be sent to the user equipment, and the processor 1120. And configured to set the first indication information according to the data cache indication information.
  • the receiver 1110 is further configured to receive a context response message sent by the source core network control entity that is served by the user equipment.
  • the processor 1120 is further configured to: in the context response message received by the receiver 1110. When the first indication information is included, the first indication information is set.
  • the processor 1120 is further configured to: when determining that the validity period of the downlink data is expired according to the first indication information, deleting the first indication information, where the first indication information is further used to indicate the downlink The expiration date of the data, wherein the validity period of the downlink data indicated by the first indication information is set according to the validity period of the downlink data carried by the data buffer indication information sent by the server that caches the downlink data.
  • the receiver 1110 is further configured to receive, by the server that caches the downlink data, a fourth message that is sent after the expiration of the validity period of the downlink data, where the fourth message is used to indicate that the first indication information is deleted.
  • the processor 1120 is further configured to delete the first indication information according to the fourth message received by the receiver 1110.
  • the receiver 1110 is further configured to receive a first user equipment reachability notification cancellation message sent by the home subscription server or the home location register to which the user equipment belongs, and the processor 1120 is further configured to be used according to the receiver.
  • the first user equipment reachable notification cancellation message received by the terminal 1110 deletes the first indication information.
  • the receiver 1110 is specifically configured to:
  • the receiver 1110 is further configured to receive a downlink data notification message or downlink data sent by the server that caches the downlink data
  • the processor 1120 is further configured to receive the cache at the receiver 1110.
  • the processor 1120 is further configured to establish a user plane bearer or a packet data protocol context.
  • the core network control entity of the embodiment of the present invention determines whether the first indication information is set after receiving the first message sent by the user equipment.
  • the first indication information indicates that the server caches downlink data to be sent to the user equipment, and when determining that the first indication information is set, the signaling connection with the user equipment is maintained, thereby saving the process of transmitting downlink data.
  • the signaling consumption avoids the process of demolition and re-establishment of the signaling connection between the user equipment and the network entity, thereby avoiding frequent state changes of the user equipment and the network entity, thereby saving power of the user equipment.
  • the core network control entity establishes a bearer required for transmitting downlink data when determining that the server has downlink data to be sent to the user equipment, thereby saving time required for transmitting downlink data. Further, in the embodiment of the present invention, after determining that the user equipment is in the allowed communication time range, determining whether the first indication information is set may reduce the burden on the network. Further, in the embodiment of the present invention, the first message may be a TAU/RAU request message, an attach request message, or a service request message, so that the server may increase the chance of sending the buffered downlink data to the user equipment, to avoid data being Invalid or deleted.
  • FIG. 14 is a schematic block diagram of user equipment 1200 in accordance with an embodiment of the present invention. As shown in FIG. 14, the user equipment 1200 includes:
  • the sending unit 1210 is configured to send a first message to the core network control entity, where the power saving unit 1220 is configured to: when receiving the third message that is sent by the core network entity according to the first message and includes the third indication information, The receiver enters a power saving mode or shuts down, wherein the third indication information indicates that the server has no downlink data to be sent to the user equipment.
  • the user equipment in the embodiment of the present invention sends the information to the core network control entity.
  • the first message when receiving the third message that is sent by the core network entity according to the first message and includes the third indication information, shutting down the receiver or entering a power saving mode or shutting down, where the third indication information indicates that there is no
  • the downlink data to be sent to the user equipment thereby saving the power of the user equipment.
  • the user equipment 1200 further includes:
  • the holding unit 1230 is configured to: when receiving the second message that includes the second indication information sent by the core network control entity according to the first message, keep the established signaling connection, and wait to receive the downlink data, where the The second indication information indicates that the server has downlink data to be sent to the user equipment.
  • the user equipment 1200 when the user equipment 1200 includes the holding unit 1220, the user equipment further includes:
  • the determining unit 1240 is configured to determine, when the current access network is a general packet radio service technology network, whether there is a packet data protocol context reservation;
  • the initiating unit 1250 is configured to initiate a process of the packet data protocol context to establish a packet data protocol context when there is no packet data protocol context reservation.
  • the user equipment in the embodiment of the present invention when sending the first message to the core network control entity, closes the receiver when receiving the third message that is sent by the core network entity according to the first message and includes the third indication information. Or entering a power saving mode or shutting down, wherein the third indication information indicates that there is no downlink data to be sent to the user equipment, and the second information that is sent by the core network control entity according to the first message and includes the second indication information is received.
  • the established signaling connection is maintained to wait for receiving the downlink data, wherein the second indication information indicates that it is to be sent to the user equipment, so that the power of the user equipment can be saved.
  • FIG. 16 is a schematic block diagram of a user equipment 1300 in accordance with an embodiment of the present invention. As shown in FIG. 16, the user equipment 1300 includes:
  • a transmitter 1310 configured to send a first message to a core network control entity
  • the receiver 1320 is configured to receive a third message that is sent by the core network control entity, according to the first message, that includes third indication information, where the third indication information indicates that the server does not have downlink data to be sent to the user equipment.
  • the processor 1330 is configured to: when the receiver 1320 receives the third message, turn off the receiver or enter a power saving mode or shut down, Therefore, the user equipment in the embodiment of the present invention, when sending the first message to the core network control entity, closes the receiver when receiving the third message that is sent by the core network entity according to the first message and includes the third indication information. Or enter the power saving mode or shut down, wherein the third indication information indicates that there is no downlink data to be sent to the user equipment, so that the power of the user equipment can be saved.
  • the receiver 1320 is further configured to receive, by the core network control entity, the second message that is sent according to the first message and includes the second indication information, where the second indication information indicates that the server has downlink data to send. To the user device.
  • the processor 1330 is further configured to: when the receiver receives the second message, maintain an established signaling connection to wait to receive the downlink data.
  • the processor 1330 is further configured to determine whether there is a packet data protocol context reservation when the current access network is a general packet radio service technology network, and initiate a packet data protocol context when there is no packet data protocol context reservation. The process to establish a packet data protocol context.
  • the user equipment in the embodiment of the present invention when sending the first message to the core network control entity, closes the receiver when receiving the third message that is sent by the core network entity according to the first message and includes the third indication information. Or entering a power saving mode or shutting down, wherein the third indication information indicates that there is no downlink data to be sent to the user equipment, and the second information that is sent by the core network control entity according to the first message and includes the second indication information is received.
  • the established signaling connection is maintained to wait for receiving the downlink data, wherein the second indication information indicates that the user equipment is to be sent, so that the power of the user equipment can be saved.
  • FIG. 17 is a schematic block diagram of a server 1400 in accordance with an embodiment of the present invention.
  • the server 1400 includes a first transmitting unit 1410, a receiving unit 1420, and a second transmitting unit 1430;
  • the first sending unit 1410 is configured to send a first user equipment reachability notification request message to the home subscription server or the home location register to which the user equipment belongs, so as to facilitate the home subscription server or the home network to which the home location register belongs to the user equipment.
  • the control entity sends a second user equipment reachability notification request message, so that the core network control entity sets the first indication information according to the second user equipment reachability notification request message, where the first indication information indicates that the server has a buffer to be sent to the server Downstream data of the user equipment, and the receipt a second user equipment reachable notification, after receiving the first user equipment reachability notification message sent by the home network control entity according to the first indication information, a message, and a second sending unit 1430, configured to send the downlink data to the user equipment; or
  • the first sending unit 1410 is configured to send data cache indication information to the core network control entity to which the user equipment belongs, so that the core network control entity sets the first indication information according to the data cache indication information, where the data cache indication information indicates The server caches the downlink data to be sent to the user equipment, and the first indication information indicates that the server has the downlink data to be sent to the user equipment, and the receiving unit 1420 is configured to receive the core network control entity according to the first And a second sending unit 1430, configured to send the downlink data to the user equipment.
  • the server 1400 further includes: a third sending unit 1440, configured to send, when the downlink data expires, a second user equipment reachable to the home subscription server or the home location register Notifying the cancellation message, so that the home subscription server or the home location register sends a first user equipment reachability notification cancellation message to the core network control entity, so that the core network control entity cancels the message according to the first user equipment reachability notification , delete the first indication information.
  • a third sending unit 1440 configured to send, when the downlink data expires, a second user equipment reachable to the home subscription server or the home location register Notifying the cancellation message, so that the home subscription server or the home location register sends a first user equipment reachability notification cancellation message to the core network control entity, so that the core network control entity cancels the message according to the first user equipment reachability notification , delete the first indication information.
  • the first user equipment reachability notification request message further includes an expiration date of the downlink data, so that the home subscription server determines, when the validity period of the downlink data expires according to the first user equipment reachability notification request message,
  • the core network control entity sends a first user equipment reachability notification cancellation message, so that the core network control entity deletes the first indication information according to the first user equipment reachability notification cancellation message.
  • the server 1400 further includes: a fourth sending unit 1450, configured to send a fourth message, the fourth message, to the core network control entity when determining that the validity period of the downlink data expires And is used to instruct the core network control entity to delete the first indication information.
  • a fourth sending unit 1450 configured to send a fourth message, the fourth message, to the core network control entity when determining that the validity period of the downlink data expires And is used to instruct the core network control entity to delete the first indication information.
  • the data cache indication information further includes an expiration date of the downlink data, so that the core network control entity sets the first indication information that is further used to indicate the validity period of the downlink data, and expires in the validity period of the downlink data.
  • the first indication information is deleted.
  • the server of the embodiment of the present invention passes the attribution to the home subscription server or the home server.
  • the location register sends a first user equipment reachability notification request message, so that the home subscription server or the home location register sends a second user equipment reachability notification request message to the core network control entity, so that the core network control entity is configured according to the second user
  • the device reachability notification request message sets the first indication information, where the first indication information indicates that the downlink data to be sent to the user equipment is buffered, and the core network control entity is received after receiving the home subscription server or the home location register.
  • the information so that the core network control entity sets the first indication information according to the data cache indication information, where the data cache indication information indicates that the downlink data to be sent to the user equipment is cached, and the first indication information indicates another entity Have to send to the user device Data, and messages requesting entity triggering the downlink data transmission based on the information indicating reception of the first core network control, transmits the downlink data to the user equipment, the user equipment can save power.
  • FIG. 19 is a schematic block diagram of a server 1500 in accordance with an embodiment of the present invention.
  • the server 1500 includes a processor 1510, a transmitter 1520, and a receiver 1530.
  • the processor 1510 is configured to instruct the sender 1520 to send a first user equipment reachability notification request message to the home subscription server or the home location register to which the user equipment belongs, so as to facilitate the home subscription server or the home location register to the user.
  • the core network control entity to which the device belongs sends the second user equipment reachability notification request message, so that the core network control entity sets the first indication information according to the second user equipment reachability notification request message, where the first indication information indicates that the server caches There is downlink data to be sent to the user equipment;
  • the transmitter 1520 is configured to send, according to an instruction of the processor 1510, a first user equipment reachability notification request message to a home subscription server or a home location register to which the user equipment belongs;
  • the receiver 1530 is configured to receive, by the home subscription server, the second user equipment that is sent after receiving the first user equipment reachability notification message sent by the core network control entity according to the first indication information, Notification message;
  • the processor 1510 is further configured to: according to the second user equipment reachability notification message received by the receiver, instructing the sender 1520 to send the downlink data to the user equipment;
  • the transmitter 1520 is further configured to send the downlink data to the user equipment according to the instruction of the processor 1510.
  • the processor 1510 is configured to instruct the sender 1520 to send data cache indication information to the core network control entity to which the user equipment belongs, so that the core network control entity sets the first indication information according to the data cache indication information, where
  • the data cache indication information indicates that the server caches downlink data to be sent to the user equipment, and the first indication information indicates that the server has buffered downlink data to be sent to the user equipment.
  • the transmitter 1520 is configured to send data cache indication information to a core network control entity to which the user equipment belongs according to the indication of the transmitter 1510.
  • the receiver 1530 is configured to receive a downlink data delivery request message sent by the core network control entity according to the first indication information.
  • the processor 1510 is further configured to: according to the downlink data sending request message received by the receiver 1530, instruct the sender 1530 to send the downlink data to the user equipment; the transmitter 1520 is further configured to be used according to the processor 1510. Instructing to send the downlink data to the user equipment.
  • the processor 1510 is further configured to: when determining that the downlink data expires, instruct the sender 1520 to send a second user equipment reachability notification cancellation message to the home subscription server or the home location register, so that the attribution
  • the first server device reachable notification cancellation message is sent to the core network control entity by the subscription server or the home location register, so that the core network control entity deletes the first indication information according to the first user equipment reachability notification cancellation message;
  • the transmitter 1520 is further configured to send, according to an instruction of the processor 1510, a second user equipment reachability notification cancellation message to the home subscription server or the home location register.
  • the first user equipment reachability notification request message further includes an expiration date of the downlink data, so that the home subscription server determines, when the validity period of the downlink data expires according to the first user equipment reachability notification request message,
  • the core network control entity sends a first user equipment reachability notification cancellation message, so that the core network control entity deletes the first indication information according to the first user equipment reachability notification cancellation message.
  • the processor 1510 is further configured to: when determining that the validity period of the downlink data expires, instruct the transmitter 1520 to send a fourth message to the core network control entity, where the The fourth message is used to indicate that the core network control entity deletes the first indication information;
  • the transmitter 1520 is further configured to send the fourth message to the core network control entity according to the indication of the processor.
  • the data cache indication information further includes an expiration date of the downlink data, so that the core network control entity sets the first indication information that is further used to indicate the validity period of the downlink data, and expires in the validity period of the downlink data.
  • the first indication information is deleted.
  • the server of the embodiment of the present invention sends the first user equipment reachability notification request message to the home subscription server or the home location register, so that the home subscription server or the home location register can send the second user equipment to the core network control entity.
  • the notification request message is sent, so that the core network control entity sets the first indication information according to the second user equipment reachability notification request message, where the first indication information indicates that the downlink data to be sent to the user equipment is cached, and is received
  • the second user equipment reachable notification response message sent by the home subscription server or the home location register after receiving the first user equipment reachability notification response message sent by the core network control entity according to the first indication information, to the user
  • the device sends the downlink data; or sends the data cache indication information to the core network control entity, so that the core network control entity sets the first indication information according to the data cache indication information, where the data cache indication information indicates that the cache is to be sent to Under the user equipment Row data, and the first indication information indicates that other entities have downlink data to be sent to the user equipment, and when
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated.
  • the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: u disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk, and the like, which can store program code. .

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Abstract

本发明实施例提供了一种用于传输数据的方法和设备。该方法包括:在接收到用户设备发送的第一消息之后,确定是否设置有第一指示信息,所述第一指示信息表明服务器缓存有要发送到所述用户设备的下行数据;在确定设置有所述第一指示信息时,保持与所述用户设备的信令连接,并触发缓存有所述下行数据的服务器向所述用户设备发送所述下行数据。本发明实施例的用于传输数据的方法和设备,可以节省用户设备的电量。

Description

用于传输数据的方法和设备
技术领域
本发明实施例涉及通信领域, 并且更具体地, 涉及一种用于传输 数据的方法和设备,其中,用于传输数据的设备包括核心网控制实体、 用户设备和服务器。
背景技术
随着通信技术的发展, 降低通信设备的电量消耗, 也变得越来 越重要。 现有技术中, 有一种用户设备的省电方案, 它针对服务器向 用户设备发送数据的场景,给出触发服务器向用户设备发送下行数据 的条件, 从而实现节省用户设备电量的效果, 具体过程为:
用户设备发起跟踪区更新 (Tracking Area Update, 简称" TAU") /路由区更新 (Routing Area Update, 简称" RAU") 请求, 并开始执行 TAU/RAU过程; 核心网控制实体(例如, 移动性管理实体(Mobility Management Entity, 简称" MME") 或者, 服务通用分组无线业务支 持节点 ( Serving General Packet Radio Service Support Node , 简禾尔 "SGSN") ) 收到 TAU/RAU请求后, 指示服务器 (例如, 业务能力服 务器(Services Capability Server,简称" SCS")或机器类通信(Machine Type Communication , 简称" MTC" ) 服务器) 该用户设备发送了 TAU/RAU请求并指示服务器将缓存的下行数据发送给该用户设备; 服务器根据核心网控制实体的指示将缓存的下行数据发送给该用户 设备。
然而, 在该方案中, 核心网控制实体每次接收到用户设备 (例 如, MTC设备) 发送的 TAU/RAU请求后, 都要通知服务器, 显然 无论服务器是否有下行数据要发送至该用户设备,用户设备都需要打 开接收器或无线模块等待服务器的下行数据。所以, 如果服务器没有 数据发送给该用户设备, 该用户设备的等待时间就是浪费的, 尤其对 于发送 TAU/RAU消息较频繁的用户设备, 多次的等待对用户设备的 省电极为不利。 发明内容
本发明实施例提供了一种用于传输数据的方法、 核心网控制实 体、 用户设备和服务器, 能够实现节省用户设备电量的效果。
第一方面, 提供了一种用于传输数据的方法, 包括:
在接收到用户设备发送的第一消息之后, 确定是否设置有第一 指示信息,所述第一指示信息表明服务器缓存有要发送到所述用户设 备的下行数据;
在确定设置有所述第一指示信息时, 保持与所述用户设备的信 令连接,并触发缓存有所述下行数据的服务器向所述用户设备发送所 述下行数据。
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 触发缓存有所述下行数据的服务器向所述用户设备发送所述下行数 据, 包括:
向所述缓存有所述下行数据的服务器发送下行数据下发请求消 息,以触发所述缓存有所述下行数据的服务器向所述用户设备发送所 述下行数据; 或包括:
向所述用户设备归属的归属签约服务器或归属位置寄存器发送 第一用户设备可达通知消息,以便于所述归属签约服务器或所述归属 位置寄存器向所述缓存有所述下行数据的服务器发送第二用户设备 可达通知消息,从而触发所述缓存有所述下行数据的服务器向所述用 户设备发送所述下行数据。
结合第一方面或第一方面的第一种可能的实现方式, 在第一方 面的第二种可能的实现方式中, 所述保持与所述用户设备的信令连 接, 包括:
向所述用户设备发送包含有第二指示信息的第二消息, 所述第 二指示信息表明有数据要发送至所述用户设备,以保持与所述用户设 备的信令连接。
结合第一方面的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,所述向所述用户设备发送包含第二指示信息的第 二消息, 包括:
在为所述用户设备预设的可保持信令连接的长度小于预定的阈 值时, 向所述用户设备发送所述第二消息。
结合第一方面的第一种可能的实现方式, 第一方面的第二种可 能的实现方式或第一方面的第三种可能的实现方式,在第一方面的第 四种可能的实现方式中, 所述方法还包括:
在确定未设置有所述第一指示信息时, 向所述用户设备发送包 含第三指示信息的第三消息,所述第三指示信息表明没有下行数据要 发送至所述用户设备,以便于所述用户设备根据所述第三指示信息关 闭接收器或进入省电模式或关机。
结合第一方面的第二种可能的实现方式或第一方面的第三种可 能的实现方式, 在第一方面的第五种可能的实现方式中, 所述第二指 示信息中还包含所述服务器的地址信息。
结合第一方面的第一种可能的实现方式, 第一方面的第二种可 能的实现方式, 第一方面的第三种可能的实现方式, 第一方面的第四 种可能的实现方式或第一方面的五种可能的实现方式,在第一方面的 第六种可能的实现方式中,在接收到所述用户设备发送的第一消息之 后, 确定是否设置有所述第一指示信息之前, 所述方法还包括: 当所述用户设备为时间受控的用户设备时, 确定所述用户设备 是否处于允许通信时间范围内;
所述确定是否设置有第一指示信息, 包括:
当确定所述用户设备处于允许通信时间范围内时, 确定是否设 置有所述第一指示信息。
结合第一方面的第一种可能的实现方式, 第一方面的第二种可 能的实现方式, 第一方面的第三种可能的实现方式, 第一方面的第四 种可能的实现方式,第一方面的五种可能的实现方式或第一方面的第 六种可能的实现方式, 在第一方面的第七种可能的实现方式中, 在所 述确定是否设置有第一指示信息之前, 所述方法还包括:
接收所述用户设备归属的归属签约服务器或归属位置寄存器在 接收到第一用户设备可达通知请求消息后发送的第二用户设备可达 通知请求消息, 根据所述第二用户设备可达通知请求消息, 设置所述 第一指示信息; 或
接收所述缓存有所述下行数据的服务器发送的数据缓存指示信 息,所述数据缓存指示信息表明服务器缓存有要发送到所述用户设备 的下行数据, 根据所述数据缓存指示信息, 设置所述第一指示信息。 结合第一方面的第一种可能的实现方式, 第一方面的第二种可 能的实现方式, 第一方面的第三种可能的实现方式, 第一方面的第四 种可能的实现方式,第一方面的五种可能的实现方式或第一方面的第 六种可能的实现方式, 在第一方面的第八种可能的实现方式中, 在所 述确定是否设置有第一指示信息之前, 所述方法还包括:
接收为所述用户设备服务的源核心网控制实体发送的上下文响 应消息;
在所述上下文响应消息中包含所述第一指示信息时, 设置所述 第一指示信息。
结合第一方面的第一种可能的实现方式, 第一方面的第二种可 能的实现方式, 第一方面的第三种可能的实现方式, 第一方面的第四 种可能的实现方式, 第一方面的五种可能的实现方式, 第一方面的第 六种可能的实现方式,第一方面的第七种可能的实现方式或第一方面 的第八种可能的实现方式, 在第一方面的第九种可能的实现方式中, 在设置所述第一指示信息之后,确定是否设置有所述第一指示信息之 前, 所述方法还包括:
在根据所述第一指示信息,确定所述下行数据的有效期到期时, 删除所述第一指示信息, 其中, 所述第一指示信息还用于指示所述下 行数据的有效期, 其中, 所述第一指示信息指示的所述下行数据的有 效期是根据缓存所述下行数据的服务器发送的数据缓存指示信息携 带的所述下行数据的有效期设置的; 或包括:
接收所述缓存有所述下行数据的服务器在所述下行数据的有效 期到期后发送的第四消息,所述第四消息用于指示将所述第一指示信 息删除, 根据所述第四消息, 删除所述第一指示信息; 或包括
接收所述用户设备归属的归属签约服务器或归属位置寄存器发 送的第一用户设备可达通知取消消息,根据所述第一用户设备可达通 知取消消息, 删除所述第一指示信息。
结合第一方面的第九种可能的实现方式, 在第一方面的第十种 可能的实现方式中,接收所述用户设备归属的归属签约服务器或归属 位置寄存器发送的第一用户设备可达通知取消消息, 包括:
接收所述归属签约服务器或所述归属位置寄存器在根据所述缓 存有所述用户设备的下行数据的服务器发送的第二用户设备可达通 知取消消息后发送的所述第一用户设备可达通知取消消息; 或包括: 接收所述归属签约服务器或所述归属位置服务器在根据第一用 户设备可达通知请求消息确定所述下行数据到期后发送的所述第一 用户设备可达通知取消消息, 其中, 所述第一用户设备可达通知请求 消息携带所述下行数据的有效期。
结合第一方面的第二种可能的实现方式或第一方面的第三种可 能的实现方式, 在第一方面的第十一种可能的实现方式中, 所述方法 还包括:
在接收到所述缓存有所述下行数据的服务器发送的下行数据通 知消息或下行数据后,建立传输相应数据包的承载对应的演进的通用 陆基无线接入网无线接入承载或建立传输相应数据包的分组数据协 议上下文对应的无线接入承载; 或者,
建立用户面承载或分组数据协议上下文。
第二方面, 提供了一种用于传输数据的方法, 其特征在于, 包 括:
向核心网控制实体发送第一消息;
在接收到所述核心网实体根据所述第一消息发送的包含有第三 指示信息的第三消息时, 关闭接收器或进入省电模式或关机, 其中, 所述第三指示信息表明服务器没有要发送到用户设备的下行数据。
结合第二方面, 在第二方面的第一种可能的实现方式中, 所述 方法还包括:
在接收到所述核心网控制实体根据所述第一消息发送的包含有 第二指示信息的第二消息时, 保持已建立的信令连接, 以等待接收所 述下行数据,其中所述第二指示信息表明服务器有要下行数据要发送 至所述用户设备。
结合第二方面或第二方面的第一种可能的实现方式, 在第二方 面的第二种可能的实现方式中,在所述方法包括在接收到所述核心网 控制实体根据所述第一消息发送的包含有第二指示信息的第二消息 时, 保持已建立的信令连接时, 所述方法还包括:
在当前接入网络为通用分组无线服务技术网络时, 确定是否有 分组数据协议上下文保留;
在没有任何分组数据协议上下文保留时, 发起分组数据协议上 下文的过程以建立分组数据协议上下文。
第三方面, 提供了一种用于传输数据的方法, 包括:
向用户设备归属的归属签约服务器或归属位置寄存器发送第一 用户设备可达通知请求消息,以便于所述归属签约服务器或所述归属 位置寄存器向所述用户设备归属的核心网控制实体发送第二用户设 备可达通知请求消息,从而所述核心网控制实体根据所述第二用户设 备可达通知请求消息设置第一指示信息,所述第一指示信息表明服务 器中缓存有要发送至所述用户设备的下行数据,并在接收到所述归属 签约服务器或所述归属位置寄存器在接收到所述核心网控制实体根 据所述第一指示信息发送的第一用户设备可达通知消息后的发送的 第二用户设备可达通知消息时, 向所述用户设备发送所述下行数据; 或
向用户设备归属的核心网控制实体发送数据缓存指示信息, 以 便于所述核心网控制实体根据所述数据缓存指示信息设置第一指示 信息, 其中, 所述数据缓存指示信息表明服务器缓存有要发送至所述 用户设备的下行数据,且所述第一指示信息表明服务器中缓存有要发 送至所述用户设备的下行数据,并在接收到所述核心网控制实体根据 所述第一指示信息发送的下行数据下发请求消息时,向所述用户设备 发送所述下行数据。
结合第三方面, 在第三方面的第一种可能的实现方式中, 在所 述方法包括向所述归属签约服务器或归属位置寄存器发送所述第一 用户设备可达通知请求消息时,
所述方法还包括: 在确定所述下行数据到期时, 向所述归属签 约服务器或所述归属位置寄存器发送第二用户设备可达通知取消消 息,以使得所述归属签约服务器或所述归属位置寄存器向所述核心网 控制实体发送第一用户设备可达通知取消消息, 从而, 所述核心网控 制实体根据所述第一用户设备可达通知取消消息,删除所述第一指示 信息; 或者
所述第一用户设备可达通知请求消息还包括所述下行数据的有 效期,以便所述归属签约服务器在根据所述第一用户设备可达通知请 求消息确定所述下行数据的有效期到期时,向所述核心网控制实体发 送第一用户设备可达通知取消消息, 从而, 所述核心网控制实体根据 所述第一用户设备可达通知取消消息, 删除所述第一指示信息。
结合第三方面, 在第三方面的第二种可能的实现方式中, 在所 述方法包括向核心网控制实体发送所述数据缓存指示信息时,
所述方法还包括: 在确定所述下行数据的有效期到期时, 向所 述核心网控制实体发送第四消息,所述第四消息用于指示所述核心网 控制实体将所述第一指示信息删除; 或者
所述数据缓存指示信息还包括所述下行数据的有效期, 以便于 所述核心网控制实体设置还用于指示所述下行数据的有效期的所述 第一指示信息, 并在所述下行数据的有效期到期时, 删除所述第一指 不信息。
第四方面, 提供了一种核心网控制实体, 包括:
第一确定单元, 用于在接收到用户设备发送的第一消息之后, 确定是否设置有第一指示信息,所述第一指示信息表明服务器缓存有 要发送到所述用户设备的下行数据;
触发单元, 用于在所述第一确定单元确定设置有所述第一指示 信息时,触发缓存有所述下行数据的服务器向所述用户设备发送所述 下行数据;
保持单元, 用于在所述第一确定单元确定设置有所述第一指示 信息时, 保持与所述用户设备的信令连接, 以等待向所述用户设备发 送的所述下行数据。
结合第四方面, 在第四方面的第一种可能的实现方式中, 所述 触发单元具体用于:
向所述缓存有所述下行数据的服务器发送下行数据下发请求消 息,以触发所述缓存有所述下行数据的服务器向所述用户设备发送所 述下行数据; 或
所述触发单元具体用于:
向所述用户设备归属的归属签约服务器或归属位置寄存器发送 第一用户设备可达通知消息,以便于所述归属签约服务器或所述归属 位置寄存器向所述缓存有所述下行数据的服务器发送第二用户设备 可达通知消息,从而触发所述缓存有所述下行数据的服务器向所述用 户设备发送所述下行数据。
结合第四方面或第四方面的第一种可能的实现方式, 在第四方 面的第二种可能的实现方式中, 所述保持单元具体用于:
向所述用户设备发送包含有第二指示信息的第二消息, 所述第 二指示信息表明有数据要发送至所述用户设备,以保持与所述用户设 备的信令连接。
结合第四方面的第二种可能的实现方式, 在第四方面的第三种 可能的实现方式中, 所述保持单元具体用于:
在为所述用户设备预设的可保持信令连接的长度小于预定的阈 值时, 向所述用户设备发送所述第二消息。
结合第四方面的第一种可能的实现方式, 第四方面的第二种可 能的实现方式或第四方面的第三种可能的实现方式,在第四方面的第 四种可能的实现方式中, 所述核心网控制实体还包括:
第一发送单元, 用于在确定未设置有所述第一指示信息时, 向 所述用户设备发送包含第三指示信息的第三消息,所述第三指示信息 表明没有下行数据要发送至所述用户设备,以便于所述用户设备根据 所述第三指示信息关闭接收器或进入省电模式或关机。
结合第四方面的第二种可能的实现方式或第四方面的第三种可 能的实现方式, 在第四方面的第五种可能的实现方式中, 所述第二指 示信息中还包含所述服务器的地址信息。
结合第四方面的第一种可能的实现方式, 第四方面的第二种可 能的实现方式, 第四方面的第三种可能的实现方式, 第四方面的第四 种可能的实现方式或第四方面的五种可能的实现方式,在第四方面的 第六种可能的实现方式中, 所述核心网控制实体还包括:
第二确定单元,用于当所述用户设备为时间受控的用户设备时, 确定所述用户设备是否处于允许通信时间范围内;
所述第一确定单元具体用于:
当所述第二确定单元确定所述用户设备处于允许通信时间范围 内时, 确定是否设置有所述第一指示信息。 结合第四方面的第一种可能的实现方式, 第四方面的第二种可 能的实现方式, 第四方面的第三种可能的实现方式, 第四方面的第四 种可能的实现方式,第四方面的五种可能的实现方式或第四方面的第 六种可能的实现方式, 在第四方面的第七种可能的实现方式中, 所述 核心网控制实体还包括:
第一接收单元, 用于接收所述用户设备归属的归属签约服务器 或归属位置寄存器在接收到第一用户设备可达通知请求消息后发送 的第二用户设备可达通知请求消息, 以及第一设置单元, 用于根据所 述第一接收单元接收的所述第二用户设备可达通知请求消息,设置所 述第一指示信息; 或包括:
第二接收单元, 用于接收所述缓存有所述下行数据的服务器发 送的数据缓存指示信息,所述数据缓存指示信息表明服务器缓存有要 发送到所述用户设备的下行数据, 以及第二设置单元, 用于根据所述 数据缓存指示信息, 设置所述第一指示信息。
结合第四方面的第一种可能的实现方式, 第四方面的第二种可 能的实现方式, 第四方面的第三种可能的实现方式, 第四方面的第四 种可能的实现方式,第四方面的五种可能的实现方式或第四方面的第 六种可能的实现方式, 在第四方面的第八种可能的实现方式中, 所述 核心网控制实体还包括:
第三接收单元, 用于接收为所述用户设备服务的源核心网控制 实体发送的上下文响应消息;
第三设置单元, 用于在所述第三接收单元接收的所述上下文响 应消息中包含所述第一指示信息时, 设置所述第一指示信息。
结合第四方面的第一种可能的实现方式, 第四方面的第二种可 能的实现方式, 第四方面的第三种可能的实现方式, 第四方面的第四 种可能的实现方式, 第四方面的五种可能的实现方式, 第四方面的第 六种可能的实现方式,第四方面的第七种可能的实现方式或第四方面 的第八种可能的实现方式, 在第四方面的第九种可能的实现方式中, 所述核心网控制实体还包括:
第一删除单元, 用于在根据所述第一指示信息, 确定所述下行 数据的有效期到期时, 删除所述第一指示信息, 其中, 所述第一指示 信息还用于指示所述下行数据的有效期, 其中, 所述第一指示信息指 示的所述下行数据的有效期是根据缓存所述下行数据的服务器发送 的数据缓存指示信息携带的所述下行数据的有效期设置的; 或包括: 第四接收单元, 用于接收所述缓存有所述下行数据的服务器在 所述下行数据的有效期到期后发送的第四消息,所述第四消息用于指 示将所述第一指示信息删除, 以及第二删除单元, 用于根据所述第五 接收单元接收的所述第四消息, 删除所述第一指示信息; 或包括
第五接收单元, 用于接收所述用户设备归属的归属签约服务器 或归属位置寄存器发送的第一用户设备可达通知取消消息,以及第三 删除单元,用于根据所述第五接收单元接收的所述第一用户设备可达 通知取消消息, 删除所述第一指示信息。
结合第四方面的第九种可能的实现方式, 在第四方面的第十种 可能的实现方式中, 所述第五接收单元具体用于:
接收所述归属签约服务器或所述归属位置寄存器在根据所述缓 存有所述用户设备的下行数据的服务器发送的第二用户设备可达通 知取消消息后发送的所述第一用户设备可达通知取消消息;或具体用 于:
接收所述归属签约服务器或所述归属位置服务器在根据第一用 户设备可达通知请求消息确定所述下行数据到期后发送的所述第一 用户设备可达通知取消消息, 其中, 所述第一用户设备可达通知请求 消息携带所述下行数据的有效期。
结合第四方面的第二种可能的实现方式或第四方面的第三种可 能的实现方式, 在第四方面的第十一种可能的实现方式中, 还包括建 立单元:
用于在接收到所述缓存有所述下行数据的服务器发送的下行数 据通知消息或下行数据后,建立传输相应数据包的承载对应的演进的 通用陆基无线接入网无线接入承载或建立传输相应数据包的分组数 据协议上下文对应的无线接入承载; 或者,
用于建立用户面承载或分组数据协议上下文。
第五方面, 提供了一种用户设备, 其特征在于, 包括: 发送单元, 用于向核心网控制实体发送第一消息; 省电单元, 用于在接收到所述核心网实体根据所述第一消息发 送的包含有第三指示信息的第三消息时,关闭接收器或进入省电模式 或关机, 其中, 所述第三指示信息表明服务器没有要发送到用户设备 的下行数据。
结合第五方面, 在第五方面的第一种可能的实现方式中, 所述 用户设备还包括:
保持单元, 用于在接收到所述核心网控制实体根据所述第一消 息发送的包含有第二指示信息的第二消息时, 保持已建立的信令连 接, 以等待接收所述下行数据, 其中所述第二指示信息表明服务器有 要下行数据要发送至所述用户设备。
结合第五方面或第五方面的第一种可能的实现方式, 在第五方 面的第二种可能的实现方式中, 在所述用户设备包括保持单元时, 所 述用户设备还包括:
确定单元, 用于在当前接入网络为通用分组无线服务技术网络 时, 确定是否有分组数据协议上下文保留;
发起单元, 用于在没有任何分组数据协议上下文保留时, 发起 分组数据协议上下文的过程以建立分组数据协议上下文。
第六方面, 提供了一种服务器, 包括第一发送单元, 第一接收 单元和第二发送单元;
所述第一发送单元, 用于向用户设备归属的归属签约服务器或 归属位置寄存器发送第一用户设备可达通知请求消息,以便于所述归 属签约服务器或所述归属位置寄存器向所述用户设备归属的核心网 控制实体发送第二用户设备可达通知请求消息,从而所述核心网控制 实体根据所述第二用户设备可达通知请求消息设置第一指示信息,所 述第一指示信息表明服务器中缓存有要发送至所述用户设备的下行 数据, 以及所述第一接收单元, 用于接收所述归属签约服务器或所述 归属位置寄存器在接收到所述核心网控制实体根据所述第一指示信 息发送的第一用户设备可达通知消息后的发送的第二用户设备可达 通知消息, 以及所述第二发送单元, 用于向所述用户设备发送所述下 行数据; 或
所述第一发送单元, 用于向用户设备归属的核心网控制实体发 送数据缓存指示信息,以便于所述核心网控制实体根据所述数据缓存 指示信息设置第一指示信息, 其中, 所述数据缓存指示信息表明服务 器缓存有要发送至所述用户设备的下行数据,且所述第一指示信息表 明服务器中缓存有要发送至所述用户设备的下行数据,以及所述第一 接收单元,用于接收所述核心网控制实体根据所述第一指示信息发送 的下行数据下发请求消息, 以及所述第二发送单元, 用于向所述用户 设备发送所述下行数据。
结合第六方面, 在第六方面的第一种可能的实现方式中, 所述 服务器还包括: 第三发送单元, 用于在确定所述下行数据到期时, 向 所述归属签约服务器或所述归属位置寄存器发送第二用户设备可达 通知取消消息,以使得所述归属签约服务器或所述归属位置寄存器向 所述核心网控制实体发送第一用户设备可达通知取消消息, 从而, 所 述核心网控制实体根据所述第一用户设备可达通知取消消息,删除所 述第一指示信息; 或者
所述第一用户设备可达通知请求消息还包括所述下行数据的有 效期,以便所述归属签约服务器在根据所述第一用户设备可达通知请 求消息确定所述下行数据的有效期到期时,向所述核心网控制实体发 送第一用户设备可达通知取消消息, 从而, 所述核心网控制实体根据 所述第一用户设备可达通知取消消息, 删除所述第一指示信息。
结合第六方面, 在第六方面的第二种可能的实现方式中, 所述 服务器还包括: 第四发送单元, 用于在确定所述下行数据的有效期到 期时, 向所述核心网控制实体发送第四消息, 所述第四消息用于指示 所述核心网控制实体将所述第一指示信息删除; 或者
所述数据缓存指示信息还包括所述下行数据的有效期, 以便于 所述核心网控制实体设置还用于指示所述下行数据的有效期的所述 第一指示信息, 并在所述下行数据的有效期到期时, 删除所述第一指 不信息。
因此, 在本发明实施例中, 通过在接收到该用户设备发送的该 第一消息之后, 确定是否设置有该第一指示信息, 该第一指示信息表 明服务器缓存有要发送到该用户设备的下行数据,在确定设置有该第 一指示信息时, 才保持与该用户设备的信令连接, 从而可以节省发送 下行数据过程中的信令消耗,避免用户设备和网络实体间的信令连接 拆除和再建的过程, 从而避免了用户设备和网络实体的频繁状态变 化, 从而节省了用户设备的电量。 附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对本发明 实施例中所需要使用的附图作简单地介绍, 显而易见地, 下面所描述 的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动的前提下, 还可以根据这些附图获得其他的附 图。
图 1是根据本发明实施例的用于传输数据的方法的示意性流程 图。
图 2是根据本发明另一实施例的用于传输数据的方法的示意性 流程图。
图 3是根据本发明另一实施例的用于传输数据的方法的示意性 流程图。
图 4是根据本发明另一实施例的用于传输数据的方法的示意性 流程图。
图 5是根据本发明另一实施例的用于传输数据的方法的示意性 流程图。
图 6是根据本发明另一实施例的用于传输数据的方法的示意性 流程图。
图 7是根据本发明另一实施例的用于传输数据的方法的示意性 流程图。
图 8是是根据本发明另一实施例的用于传输数据的方法的示意 性流程图。
图 9是根据本发明另一实施例的用于传输数据的方法的示意性 框图。
图 10是根据本发明实施例的核心网控制实体的示意性框图。 图 11 是根据本发明另一实施例的核心网控制实体的示意性框 图。 图 12 是根据本发明另一实施例的核心网控制实体的示意性框 图。
图 13 是根据本发明另一实施例的核心网控制实体的示意性框 图。
图 14是根据本发明实施例的用户设备的示意性框图。
图 15是根据本发明另一实施例的用户设备的示意性框图。
图 16是根据本发明另一实施例的用户设备的示意性框图。
图 17是根据本发明实施例的服务器的示意性框图。
图 18是根据本发明另一实施例的服务器的示意性框图。
图 19是根据本发明另一实施例的服务器的示意性框图。 具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术 方案进行清楚、 完整地描述, 显然, 所描述的实施例是本发明的一部 分实施例, 而不是全部实施例。 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的前提下所获得的所有其他实施例, 都应属于本发明保护的范围。
应理解, 本发明实施例的技术方案可以应用于各种通信系统, 例如: 全球移动通讯 (Global System of Mobile communication, 简称 "GSM" ) 系统、 码分多址 (Code Division Multiple Access , 简称 "CDMA" ) 系统、 宽带码分多址 (Wideband Code Division Multiple Access, 简称" WCDMA") 系统、 通用分组无线业务 ( General Packet Radio Service, 简称" GPRS")、 长期演进( Long Term Evolution, 简称 "LTE")系统、 LTE频分双工(Frequency Division Duplex,简称" FDD") 系统、 LTE时分双工 (Time Division Duplex, 简称" TDD")、 通用移 动通信系统 ( Universal Mobile Telecommunication System, 简禾尔 "UMTS") 等。
用户设备 (User Equipment , 简称" UE" ), 也可称之为终端 (Terminal) , 可以经无线接入网 (例如, Radio Access Network, 简 称" RAN") 与一个或多个核心网进行通信。
当本发明提及 "第一"、 "第二"、 "第三"、 "第四 "及"第五"等序数 词时, 除非根据上下文其确实表达顺序之意, 应当理解为仅仅是起区 分之用。
图 1是根据本发明实施例的用于传输数据的方法 100的示意性 流程图。 该方法 100 可以由核心网控制实体执行, 例如, SGSN 或 MME等。 如图 1所示, 该方法 100包括:
S110, 在接收到用户设备发送的第一消息之后, 确定是否设置 有第一指示信息,该第一指示信息表明服务器缓存有要发送到该用户 设备的下行数据;
S120, 在确定设置有该第一指示信息时, 保持与该用户设备的 信令连接,并触发缓存有该下行数据的服务器向该用户设备发送该下 行数据。
具体地说, 核心网控制实体, 例如, SGSN或 MME, 在接收到 用户设备发送的第一消息之后, 例如, TAU/RAU 请求消息、 附着 (attach) 请求消息或者业务请求消息, 可以查找自身是否设置有表 明服务器缓存有要发送到该用户设备的下行数据的第一指示信息;在 确定设置有该第一指示信息后,该核心网控制实体可以保持与该用户 设备的信令连接,并触发缓存有该下行数据的服务器向该用户设备发 送该下行数据,从而核心网控制实体在接收到服务器发送至该用户设 备的下行数据或下行数据通知后, 利用与该用户设备保持的信令连 接, 向用户设备发送该下行数据。
在本发明实施例中, 触发缓存有该下行数据的服务器向该用户 设备发送该下行数据可以通过以下两种方式实现:
方式 1 : 直接向缓存有该下行数据的服务器发送下行数据下发 请求,以请求该缓存有该下行数据的服务器将该下行数据发送至该用 户设备;
方式 2: 通过向该用户设备归属的归属签约服务器或归属位置 服务器发送第一用户设备可达通知消息,归属签约服务器或归属位置 服务器根据核心网控制实体发送的第一用户设备可达通知消息, 向服 务器发送第二用户设备可达通知消息,服务器可以通过该第二用户设 备可达通知消息确定用户设备可达, 从而, 服务器可以向该用户设备 发送该缓存的下行数据。 在本发明实施例中, 用户设备可达意味着用户设备可响应 paging (寻呼) 消息或保持着与核心网控制实体的信令连接, 例如, 用户设备发送 TAU/RAU请求消息、发送上行数据请求后的一段时间 意味着用户设备可达。本发明实施例中服务器向该用户设备归属的归 属签约服务器或归属位置服务器发送用户设备可达通知请求消息,意 味着服务器通过向归属签约服务器或归属位置服务器发送用户设备 可达通知请求消息以请求在用户设备可达时得到通知,在接收到归属 签约服务器或归属位置服务器在接收到核心网控制实体发送的第一 用户设备可达通知后发送的第二用户设备可达通知之后,服务器可以 确定该用户设备可达,从而,该服务器可以向用户设备发送下行数据。
该用户设备在保持一定时间信令连接后, 可进入空闲模式或省 电状态或关机, 以节省电量。
因此, 本发明实施例的用于传输数据的方法, 通过在接收到该 用户设备发送的该第一消息之后, 确定是否设置有该第一指示信息, 该第一指示信息表明服务器缓存有要发送到该用户设备的下行数据, 在确定设置有该第一指示信息时, 才保持与该用户设备的信令连接, 从而可以节省发送下行数据过程中的信令消耗,避免用户设备和网络 实体间的信令连接拆除和再建的过程,从而避免了用户设备和网络实 体的频繁状态变化, 从而节省了用户设备的电量。
在本发明实施例中, S120中保持与用户设备的信令连接,包括: 向该用户设备发送包含有第二指示信息的第二消息, 该第二指 示信息表明有数据要发送至该用户设备,以保持与该用户设备的信令 连接。
具体地说, 该核心网控制实体可以通过第二消息, 例如, TAU/RAU接受消息、 附着接受消息、 直接传送 (direct transfer) 消 息、 业务接受消息或者其他 NAS消息, 例如, 下行 NAS传输消息 (downlink NAS transport message) 等, 将用于表明有数据要发送至 该用户设备的第二指示信息发送至该用户设备, 从而, 该用户设备在 接收到该核心网控制实体发送的包含有该第二指示信息的该第二消 息之后, 保持可通信状态, gp, 保持与核心网控制实体的信令连接, 以等待接收该服务器发送的下行数据。 在本发明实施例中, 保持与该用户设备的信令连接, 即意味着, 该核心网控制实体不发起信令连接释放过程, 对于用户设备而言, 保 持已建立的 RRC 连接不释放, 即不启动现有标准中规定的定时器 T3440或 T3340; 如果用户设备保持了预定的信令连接的时间, 并已 启动了定时器 T3440或 T3340之后, 才接收到用户设备发送的该第 二消息, 可以删除该定时器 T3440或 T3340。
在本发明实施例中, 向该用户设备发送包含该第二指示信息的 该第二消息, 可以包括:
在为该用户设备预设的可保持信令连接的长度小于预定的阈值 时, 向该用户设备发送该第二消息。
具体地说, 在核心网控制实体确定自身设置有该第一指示信息 时,可以判断为该用户设备预设的可保持信令连接的长度是否小于预 定的阈值, 只有在小于预定的阈值时, 才向用户设备发送包括该第二 指示信息的该第二消息。
在本发明实施例中, 该方法 100还可以包括:
在确定未设置有该第一指示信息时, 向该用户设备发送包含第 三指示信息的第三消息,该第三指示信息表明没有下行数据要发送至 该用户设备,以便于该用户设备根据该第三指示信息关闭接收器或进 入省电模式或关机。
具体地说, 该核心网控制实体在接收到该用户设备发送的第一 消息之后, 并确定自身未设置有该第一指示信息时, 可以生成第三指 示信息, 该第三指示信息表明没有下行数据要发送至该用户设备, 然 后, 可以通过第三消息, 例如, TAU/RAU接受消息、 附着接受消息、 直接传送 (direct transfer) 消息、 业务接受消息或其他 NAS消息等, 将该第三指示信息发送至该用户设备。从而, 该用户设备在接收到该 核心网控制实体发送的包含有该第三指示信息的第三消息之后,可以 关闭接收器, 可以进入省电模式, 也可以关机。
因此, 在本发明实施例中, 在确定未设置有表明该服务器缓存 有要发送到该用户设备的下行数据的该第一指示信息之后,向该用户 设备发送包含有表明该服务器没有下行数据要发送至该用户设备的 该第三指示信息的该第三消息,从而该用户设备在接收到该服务器发 送的包含有该第三指示信息的该第三消息之后,关闭接收器或进入省 电模式或关机, 从而可以节省电量。
在本发明实施例中, 该第二指示信息中还可以包含有服务器的 地址信息,从而该用户设备在接收到该第二指示信息中包含的服务器 的地址信息对应的服务器发送的数据之后, 就可以关闭接收器、进入 省电模式或关机, 可以进一步节省电量。
当有多个服务器要发送至用户设备时, 所述第一指示信息可以 包含多个服务器地址信息, 以使得用户设备收到多个服务器的数据 后, 才关闭接收器、 进入省电模式或关机。
对于时间受控的用户设备, 根据第一消息触发 SCS (或 MTC SERVER)发送下行数据很有可能发生在时间受控的用户设备的允许 通信时间范围之外, 而演进分组系统(Evolved Packet System, 简称 "EPS") 网络需要拒绝或丢弃要发送的数据, 这种情况给网络制造了 多余的负担。
因此, 在本发明实施例中, 在接收到该用户设备发送的第一消 息之后, 确定是否存储有该第一指示信息之前, 该方法 100还可以包 括:
该用户设备为时间受控的用户设备时, 确定该用户设备是否处 于允许通信时间范围内;
该确定是否存储有第一指示信息, 包括:
当确定该用户设备处于允许通信时间范围内时, 确定是否设置 有该第一指示信息。
具体地说, 该核心网控制实体在接收到该用户设备发送的该第 一消息之后,可以根据该用户设备的签约数据确定该用户设备是否属 于时间受控的用户设备, 如果确定该用户设备为时间受控的用户设 备,则可以进一步根据该用户设备的签约数据确定该用户设备是否处 于允许通信时间范围内,并在确定该用户设备处于允许通信时间范围 内时, 才确定是否设置有该第一指示信息。
在本发明实施例中, 在该用户设备未处于允许通信时间范围内 时, 则不执行本发明实施例后续所述过程, 后续实现方式可以参考现 有技术, 为了简洁, 在此不再赘述。 因此, 根据本发明实施例的用于传输数据的方法, 在确定用户 设备处于允许通信时间范围内后, 才确定是否设置有该第一指示信 息, 可以减轻网络的负担。
在本发明实施例中,在 S110确定是否设置有该第一指示信息之 前, 该方法 100还可以包括:
接收该缓存有该下行数据的服务器发送的数据缓存指示信息, 该数据缓存指示信息表明服务器缓存有要发送到该用户设备的下行 数据, 根据该数据缓存指示信息, 设置该第一指示信息。
具体地说, 在本发明实施例中, 在该服务器需要向该用户设备 发送下行数据, 但当前不在向该用户设备发送下行数据的时间范围 时, 该服务器可以缓存该下行数据, 并向该核心网控制实体发送表明 该服务器缓存有要发送到该用户设备的下行数据的数据缓存指示信 息,该核心网控制实体在接收到该服务器发送的该数据缓存指示信息 之后, 可以设置该第一指示信息。
或者, 在本发明实施例中, 在 S110确定是否设置有该第一指示 信息之前, 该方法 100还可以包括:
接收该用户设备归属的归属签约服务器或归属位置寄存器在接 收到第一用户设备可达通知请求消息后发送的第二用户设备可达通 知请求消息, 根据该第二用户设备可达通知请求消息, 设置该第一指 不信息;
具体地说, 在该服务器需要向该用户设备发送下行数据, 但当 前不在向该用户设备发送下行数据的时间范围时,该服务器可以缓存 该下行数据,并向该用户设备归属的归属签约服务器或归属位置寄存 器发送第一用户设备可达通知请求消息, 其中, 该第一用户设备可达 通知请求消息可以携带服务器的地址信息和用户设备的身份信息,然 后,归属签约服务器或归属位置寄存器可以根据该第一用户设备可达 通知请求消息向该用户设备所在核心网控制实体发送第二用户设备 可达通知请求消息,该第二用户设备可达通知请求消息可以携带用户 设备的身份信息,核心网控制实体接收到归属签约服务器或归属位置 寄存器发送的第二用户设备可达通知请求消息之后,可以设置该第一 指示信息。 或者, 在本发明实施例中, 在 S110确定是否存储有该第一指示 信息之前, 该方法 100还可以包括:
接收为该用户设备服务的源核心网控制实体发送的上下文响应 消息;
在该上下文响应消息中包括该第一指示信息时, 设置该第一指 不信息
具体地说, 在该用户设备的 TAU/RAU的过程中, 如果所附着 的核心网控制实体发生改变,则核心网控制实体可以向为该用户设备 服务的源核心网控制实体发送上下文请求消息来获取用户信息,以及 接收为该用户设备服务的源核心网控制实体发送的上下文响应消息, 并在确定该上下文响应信息中包括该第一指示信息时,设置该第一指 不信息。
在设置该第一指示信息之后, 确定是否设置有该第一指示信息 之前, 该方法 100还可以包括:
在根据该第一指示信息, 确定该下行数据的有效期到期时, 删 除该第一指示信息, 其中, 该第一指示信息还用于指示该下行数据的 有效期, 其中, 该第一指示信息指示的该下行数据的有效期是根据缓 存该下行数据的服务器发送的数据缓存指示信息携带的该下行数据 的有效期设置的。
具体地说, 如果服务器缓存的要发送到该用户设备的下行数据 存在有效期,则该服务器向该用户设备发送的该数据缓存指示信息还 表明该服务器缓存的要发送到该用户设备的下行数据的有效期,核心 网控制实体在接收到服务器发送的该数据缓存指示之后,可以设置还 用于表明该下行数据的有效期的该第一指示信息, 如果该有效期到 期, 而相应的数据仍旧未发送, 则核心网控制实体可以删除该第一指 不信息。
或者, 在本发明实施例中, 在设置该第一指示信息之后, 确定 是否设置有该第一指示信息之前, 该方法 100还可以包括:
接收该缓存有该下行数据的服务器在该下行数据的有效期到期 后发送的第四消息, 该第四消息用于指示将该第一指示信息删除, 根 据该第四消息, 删除该第一指示信息。 具体地说, 如果该服务器缓存的要发送到该用户设备的下行数 据存在有效期, 如果该有效期到期, 而相应的数据仍未发送, 则该服 务器可以指示该核心网控制实体将存储的该第一指示信息删除, 从 而, 核心网控制实体可以根据服务器的指示将该第一指示信息删除。
或者, 在本发明实施例中, 在设置该第一指示信息之后, 确定 是否设置有该第一指示信息之前, 该方法 100还可以包括:
接收该用户设备归属的归属签约服务器或归属位置寄存器发送 的第一用户设备可达通知取消消息,根据该第一用户设备可达通知取 消消息, 删除该第一指示信息。
其中, 在本发明实施例中, 接收该归属签约服务器或归属位置 寄存器发送的第一用户设备可达通知取消消息, 可以包括:
接收该归属签约服务器或该归属位置寄存器在根据该缓存有该 用户设备的下行数据的服务器发送的第二用户设备可达通知取消消 息后发送的该第一用户设备可达通知取消消息; 或包括:
接收该归属签约服务器或该归属位置服务器在根据第一用户设 备可达通知请求消息确定该下行数据到期后发送的该第一用户设备 可达通知取消消息, 其中, 该第一用户设备可达通知请求消息携带该 下行数据的有效期。
应理解, 在本发明实施例中, 第一指示信息可以用于指示多个 服务器有下行数据要向用户设备发送,归属签约服务器或归属位置服 务器在接收到任一个服务器发送的用户设备可达通知取消消息后,或 归属签约服务器或归属位置服务器判断出任一服务器要发送到用户 设备的数据到期后,可以删除该任一服务器的与用户设备可达相关的 信息,在归属签约服务器或归属位置服务器在全部删除该多个服务器 的与用户设备可达相关的信息之后,即没有对用户设备可达的通知请 求时, 才指示核心网控制实体删除该第一指示信息。
在现有技术中, 只有 TAU/RAU请求消息能触发服务器向用户 设备发送缓存的下行数据, 对于低移动性设备, TAU/RAU过程可能 很少, 甚至没有, 这种场景下极有可能影响服务器向用户设备的数据 发送,因为缓存在服务器中的待发送数据在一定时间后可能无效或被 删除掉。 而在本发明实施例中, 该第一消息可以为 TAU/RAU请求消 息, 可以为附着请求消息, 也可以为业务请求消息。 因此, 可以增加 服务器向用户设备发送缓存的下行数据的机会,避免数据被无效或被 删除掉。
在本发明实施例中, 该方法 100还可以包括:
在接收到该缓存有该下行数据的服务器发送的下行数据通知消 息或下行数据后,建立传输相应数据包的承载对应的演进的通用陆基 无线接入网无线接入承载 (Evolved Universal Terrestrial Radio Access Network Radio Access Bear, 简称" E-RAB") 或建立传输相应数据包 的分组数据协议 ( Packet Data Protocol, 简称" PDP")上下文对应的无 线接入承载 (Radio Access Bear, 简称" RAB" )。
具体地说, 核心网控制实体在确定设置有该第一指示信息时, 保持与该用户设备的信令连接, 其中, 可以通过向用户设备发送包括 第二指示信息的第二消息而保持与该用户设备的信令连接, 其中, 保 持与该用户设备的信令连接, 即意味着, 该核心网控制实体不发起信 令连接释放过程, 对于用户设备而言, 保持已建立的 RRC连接不释 放, 即不启动现有标准中规定的定时器 T3440或 T3340; 如果用户设 备保持了预定的信令连接的时间,并已启动了定时器 T3440或 T3340 之后, 才接收到用户设备发送的该第二消息的, 可以删除该定时器 T3440或 T3340。 该服务器在接收到该核心网控制实体发送的用于指 示该服务器向该用户设备发送下行数据的请求或归属签约服务器或 归属位置服务器在接收到核心网控制实体发送的第一用户设备可达 通知消息后发送的第二用户设备可达通知消息之后,开始发送下行数 据, 对于系统架构演进 (System Architecture Evolution, 简称" SAE" ) 网络而言, 核心网控制实体接收到下行数据通知消息之后, 或对于通 用分组无线服务技术 ( General Packet Radio Service, 简称" GPRS")网 络而言, SGSN收到下行数据后, 核心网控制实体可以直接要求无线 接入网络 (Radio Access Network, 简称" RAN") 侧 (例如, eNodeB 或无线网络控制器 (Radio Network Controller, 简称" RNC") ) 建立传 输相应数据包的承载对应的演进的通用陆基无线接入网无线接入承 载 (E-RAB ) 或建立传输相应数据包的分组数据协议 PDP上下文对 应的无线接入承载 (Radio Access Bear, 简称" RAB")。 例如, 对于 SAE 网络而言, MME 根据收到的下行数据通知 (downlink data notification) 中的 EPS承载( bearer )标识 (Identifier, 简称" ID"), 向 eNodeB发送初始上下文建立 (initial context setup) 消息以建立相应 的 E-RAB (无线承载 (radio bearer) 和 SI承载 (SI bearer) ), 对于 GPRS网络而言, SGSN向 RNC发送无线接入承载分配(radio access bearer assignment) 消息以建立相应的 RAB (用户设备、 RNC 以及 SGSN之间的用户面)。
或者, 在本发明实施例中, 该方法 100还可以包括:
建立用户面承载或 PDP上下文。
具体地说, 核心网控制实体在确定设置有该第一指示信息时, 可以保持与该用户设备的信令连接, 其中, 可以通过向用户设备发送 包括第二指示信息的第二消息而保持与该用户设备的信令连接,保持 与该用户设备的信令连接, 即意味着, 该核心网控制实体不发起信令 连接释放过程, 对于用户设备而言, 保持已建立的 RRC连接不释放, 即不启动现有标准中规定的定时器 T3440或 T3340;如果用户设备保 持了预定的信令连接的时间, 并已启动了定时器 T3440或 T3340之 后, 才接收到用户设备发送的该第二消息的, 可以删除该定时器 T3440或 T3340。 核心网控制实体可以在向该用户设备发送包括该第 二指示信息第二消息的同时, 执行建立所有承载的 E-RAB或 PDP上 下文的 RAB的过程, 也可以在确定设置有该第一指示信息时, 就执 行建立所有承载的 E-RAB或 PDP上下文的 RAB的过程; 对于 SAE 网络而言, 指建立该用户所有激活承载对应的用户设备与 eNodeB之 间的无线承载以及 eNodeB 与服务网关 (Serving Gateway , 简称 "SGW")之间的 SI用户面连接, 对于 UMTS网络而言, 指建立该用 户所有激活的 PDP上下文对应的用户设备与 RNC之间的无线承载, 以及 RNC 与 SGSN 之间的 Iu 用户面连接; 对于没有成功建立 E-RAB/RAB的承载, 用户设备和网络将承载或 PDP上下文释放。
或者, 在本发明实施例中, 触发缓存有该下行数据的服务器向 该用户设备发送该下行数据可以包括:
在该用户设备当前接入网络为 GPRS网络, 且确定该用户设备 已建立 PDP上下文时, 触发该服务器发送缓存的要发送到该用户设 备的下行数据。
具体地说, 对于 GPRS网络而言, 如果没有任何 PDP上下文保 留,用户设备在接收到该核心网控制实体发送的包括该第二指示信息 的该第二消息 (TAU/RAU响应消息或附着接受消息) 之后, 发起激 活 PDP上下文的过程以建立 PDP上下文, 该核心网控制实体确定该 用户设备已建立 PDP上下文后, 即在 SGSN收到该用户设备发送的 激活 PDP上下文接受 ( active PDP context accept) 消息之后, 触发该 服务器发送下行数据。 其中, 用户设备发起激活 PDP上下文过程中 所使用的参数可以预先配置在用户设备中。
因此, 本发明实施例的用于传输数据的方法, 通过在接收到用 户设备发送的第一消息之后, 确定是否设置有第一指示信息, 该第一 指示信息表明服务器缓存有要发送到该用户设备的下行数据,在确定 设置有该第一指示信息时, 才保持与该用户设备的信令连接, 在确定 未存储有表明该服务器缓存有要发送到该用户设备的下行数据的该 第一指示信息之后,向该用户设备发送包含有表明该服务器没有下行 数据要发送至该用户设备的该第三指示信息的该第三消息,从而该用 户设备在接收到该服务器发送的包含有该第三指示信息的该第三消 息之后, 关闭接收器或进入省电模式或关机, 从而可以节省电量, 从 而可以节省用户设备的电量。进一步地, 该核心网控制实体在确定该 服务器有下行数据要发送到该用户设备时,建立发送下行数据所需的 承载, 以此节省传输下行数据所需的时间。进一步地, 在本发明实施 例中, 在确定该用户设备处于允许通信时间范围内后, 才确定是否设 置有该第一指示信息, 可以减轻网络的负担。进一步地, 在本发明实 施例中, 该第一消息可以为 TAU/RAU请求消息、 附着请求消息或者 业务请求消息,从而可以增加该服务器向该用户设备发送缓存的下行 数据的机会, 避免数据被无效或被删除掉。
以上已结合图 1从核心网控制实体侧描述根据本发明实施例的 用于传输数据的方法 100。 以下将结合图 2从用户设备侧描述根据本 发明实施例的用于传输数据的方法。
图 2是根据本发明实施例的用于传输数据的方法 200的示意性 流程图。该方法可以由用户设备执行。如图 2所示,该方法 200包括: S210, 向核心网控制实体发送第一消息;
S220, 在接收到该核心网实体根据该第一消息发送的包含有第 三指示信息的第三消息时,关闭接收器或进入省电模式或关机,其中, 该第三指示信息表明服务器没有要发送到用户设备的下行数据。
因此, 在本发明实施例中, 通过向核心网控制实体发送第一消 息,在接收到该核心网实体根据该第一消息发送的包含有第三指示信 息的第三消息时, 关闭接收器或进入省电模式或关机, 其中, 该第三 指示信息表明没有要发送到该用户设备的下行数据,从而可以节省用 户设备的电量。
在本发明实施例中, 该方法 200还可以包括:
在接收到该核心网控制实体根据该第一消息发送的包含有第二 指示信息的第二消息时, 保持已建立的信令连接, 以等待接收该下行 数据, 其中该第二指示信息表明有要发送至该用户设备。
具体地说,在该用户设备接收到该核心网控制实体(例如, MME 或 SGSN)发送的包括该第二指示信息的该第二消息之后, 不启动标 准中所规定的定时器 T3440或 T3340, 保持 RRC连接不释放, 并等 待该服务器发送的下行数据。
因此, 本发明实施例通过该用户设备保持 RRC连接不释放, 这 样节省了寻呼 (paging) 过程及该用户设备再次建立 RRC连接的过 程, 能够进一步节省电量。
在本发明实施例中, 在接收到该核心网控制实体根据该第一消 息发送的包含有第二指示信息的第二消息时, 该方法 200 还可以包 括:
在当前接入网络为通用分组无线服务技术网络时, 确定是否有 分组数据协议上下文保留;
在没有任何分组数据协议上下文保留时, 发起分组数据协议上 下文的过程以建立分组数据协议上下文。
在本发明实施例中, 该第一消息可以为跟踪区更新 /路由区更新 (TAU/RAU) 请求消息, 该第二消息可以为 TAU/RAU接受消息; 或者, 该第一消息可以为附着请求消息, 该第二消息可以为附着响应 消息; 或者, 该第一消息可以为业务请求消息, 该第二消息可以为直 接传送消息或业务接受消息。
因此, 在本发明实施例中, 通过向核心网控制实体发送第一消 息,在接收到该核心网实体根据该第一消息发送的包含有第三指示信 息的第三消息时, 关闭接收器或进入省电模式或关机, 其中, 该第三 指示信息表明没有要发送到该用户设备的下行数据,在接收到该核心 网控制实体根据该第一消息发送的包含有第二指示信息的第二消息 时, 保持已建立的信令连接, 以等待接收该下行数据, 其中该第二指 示信息表明有要发送至该用户设备, 从而可以节省用户设备的电量, 图 3是根据本发明实施例的用于传输数据的方法 300的示意性 流程图。 该方法 300由服务器执行, 例如, SCS或 MTC SERVER 如图 3所示, 该方法 300可以包括:
S310, 向用户设备归属的归属签约服务器或归属位置寄存器发 送第一用户设备可达通知请求消息,以便于该归属签约服务器或该归 属位置寄存器向该用户设备归属的核心网控制实体发送第二用户设 备可达通知请求消息,从而该核心网控制实体根据该第二用户设备可 达通知请求消息设置第一指示信息,该第一指示信息表明服务器缓存 有要发送至该用户设备的下行数据,并在接收到该归属签约服务器或 归属位置寄存器在接收到该核心网控制实体根据该第一指示信息发 送的第一用户设备可达通知消息后发送的第二用户设备可达通知消 息, 向该用户设备发送该下行数据; 或
向用户设备归属的核心网控制实体发送数据缓存指示信息, 以 便于该核心网控制实体根据该数据缓存指示信息设置第一指示信息, 其中,该数据缓存指示信息表明服务器缓存有要发送至该用户设备的 下行数据,且该第一指示信息表明服务器中缓存有要发送至该用户设 备的下行数据,并在接收到该核心网控制实体根据该第一指示信息发 送的下行数据下发请求消息时, 向该用户设备发送该下行数据。
具体地说, 在本发明实施例中, 该服务器在确定有下行数据要 发送至该用户设备时,如果当前不在向该用户设备发送数据的时间范 围内, 则可以将相应的数据缓存; 然后, 该服务器可以向核心网控制 实体发送数据缓存指示信息, 从而, 核心网控制实体可以根据该数据 缓存指示信息设置该第一指示信息,并在接收到该用户设备发送的该 第一消息之后, 可以根据该第一指示信息, 保持与该用户设备的信令 连接, 并请求服务器向该用户设备发送下行数据, 从而, 核心网控制 实体可以利用已保持的信令连接将该服务器发送的要发送至该用户 设备的该下行数据发送至该用户设备。
或者, 在本发明实施例中, 该服务器在确定有下行数据要发送 至该用户设备时, 如果当前不在向该用户设备发送数据的时间范围 内, 则可以将相应的数据缓存; 然后, 服务器可以向该用户设备归属 的归属签约服务器或归属位置服务器发送第一用户设备可达通知请 求消息,该第一用户设备可达通知请求消息可以携带该用户设备的身 份信息或该服务器的地址信息,该用户设备归属的归属签约服务器或 归属位置服务器向核心网控制实体发送第二用户设备可达通知请求 消息, 该第二用户设备可达通知请求可以包括该用户设备的身份信 息;核心网控制实体在接收到该用户设备归属的归属签约服务器或归 属位置服务器发送的第二用户设备可达通知请求消息之后,可以设置 用于表明服务器缓存的要发送到该用户设备的下行数据的第一指示 信息, 并在接收到该用户设备发送的该第一消息之后, 可以根据该第 一指示信息, 保持与该用户设备的信令连接, 并请求服务器向该用户 设备发送下行数据, 从而, 核心网控制实体可以利用已保持的信令连 接将该服务器发送的要发送至该用户设备的该下行数据发送至该用 户设备。
因此, 在本发明实施例中, 通过向归属签约服务器或归属位置 寄存器发送第一用户设备可达通知请求消息, 以便于该归属签约服务 器或归属位置寄存器向核心网控制实体发送第二用户设备可达通知 请求消息,从而该核心网控制实体根据该第二用户设备可达通知请求 消息设置第一指示信息,该第一指示信息表明服务器中缓存有要发送 至该用户设备的下行数据,并在接收到该归属签约服务器或归属位置 寄存器在接收到该核心网控制实体根据该第一指示信息发送的第一 用户设备可达通知响应消息后的发送的第二用户设备可达通知响应 消息, 向该用户设备发送该下行数据; 或向核心网控制实体发送数据 缓存指示信息,以便于该核心网控制实体根据该数据缓存指示信息设 置第一指示信息, 其中, 该数据缓存指示信息表明服务器中缓存有要 发送至该用户设备的下行数据,且该第一指示信息表明服务器有要发 送至该用户设备的下行数据,并在接收到该核心网控制实体根据该第 一指示信息发送的触发该下行数据的请求消息时,向该用户设备发送 该下行数据, 可以节省用户设备的电量。
在本发明实施例中, 在该方法 300包括向该归属签约服务器或 归属位置寄存器发送该第一用户设备可达通知请求消息时, 该方法 300还可以包括:
在确定该下行数据到期时, 向该归属签约服务器或该归属位置 寄存器发送第二用户设备可达通知取消消息,以使得该归属签约服务 器或该归属位置寄存器向该核心网控制实体发送第一用户设备可达 通知取消消息, 从而, 该核心网控制实体根据该第一用户设备可达通 知取消消息, 删除该第一指示信息; 或者
该第一用户设备可达通知请求消息还可以包括该下行数据的有 效期,以便该归属签约服务器或归属位置寄存器在根据该第一用户设 备可达通知请求消息确定该下行数据的有效期到期时,向该用户设备 发送第一用户设备可达通知取消消息, 从而, 该核心网控制实体根据 该第一用户设备可达通知取消消息, 删除该第一指示信息。
在本发明实施例中, 在该方法 300可以包括向核心网控制实体 发送该数据缓存指示信息时, 该方法还包括: 在确定该下行数据的有 效期到期时, 向该核心网控制实体发送第四消息, 该第四消息用于指 示该核心网控制实体将该第一指示信息删除;或者该数据缓存指示信 息还可以包括该下行数据的有效期,以便于该核心网控制实体设置还 用于指示该下行数据的有效期的该第一指示信息,并在该下行数据的 有效期到期时, 删除该第一指示信息。
因此, 在本发明实施例中, 通过向归属签约服务器或归属位置 寄存器发送第一用户设备可达通知请求消息, 以便于该归属签约服务 器或归属位置寄存器向核心网控制实体发送第二用户设备可达通知 请求消息,从而该核心网控制实体根据该第二用户设备可达通知请求 消息设置第一指示信息,该第一指示信息表明缓存有要发送至该用户 设备的下行数据,并在接收到该归属签约服务器或归属位置寄存器在 接收到该核心网控制实体根据该第一指示信息发送的第一用户设备 可达通知响应消息后的发送的第二用户设备可达通知响应消息, 向该 用户设备发送该下行数据;或向核心网控制实体发送数据缓存指示信 息,以便于该核心网控制实体根据该数据缓存指示信息设置第一指示 信息, 其中, 该数据缓存指示信息表明缓存有要发送至该用户设备的 下行数据,且该第一指示信息表明其他实体有要发送至该用户设备的 下行数据,并在接收到该核心网控制实体根据该第一指示信息发送的 触发该下行数据的请求消息时, 向该用户设备发送该下行数据, 可以 节省用户设备的电量。
图 4是根据本发明实施例的用于传输数据的方法 400的示意性 流程图。 如图 4所示, 该方法 400可以包括:
S410, 在接收到用户设备发送的第一消息之后, 确定是否存储 有第一指示信息,该第一指示信息表明服务器缓存有要发送到该用户 设备的下行数据;
S420, 在确定存储有该第一指示信息时, 确定该下行数据的数 据量是否在第二消息能承载的范围之内, 其中, 该第一指示信息还表 明该下行数据的数据量;
S430,在该下行数据的数据量在该第二消息能承载范围之内时, 从该服务器获取该下行数据,并向该用户设备发送携带有该下行数据 的第二消息,以便于该用户设备从携带有该下行数据的第二消息中获 取该下行数据。
具体地说, 该核心网控制实体(例如, SGSN或 MME)在接收 到该用户设备发送的该第一消息之后, 例如, TAU/RAU请求消息、 附着 (attach) 请求消息或者业务请求消息, 可以查找自身是否存储 有表明该服务器缓存有要发送到该用户设备的下行数据的该第一指 示信息; 在确定存储有该第一指示信息, 且该第一指示信息还表明该 下行数据的数据量时,该核心网控制实体可以确定该服务器缓存的要 发送到该用户设备的下行数据的数据量是否在该第二消息能承载的 数据量的范围内,在该服务器缓存的要发送到该用户设备的下行数据 的数据量在该第二消息能承载的数据量范围内时,则该核心网控制实 体可以向该服务器获取该服务器缓存的要发送到该用户设备的下行 数据, 然后, 向该用户设备发送携带该下行数据的第二消息, 从而, 该用户设备在接收到该核心网控制实体发送的携带该下行数据的该 第二消息之后, 可以从该第二消息中获取该下行数据。
在本发明实施例, 该方法 400还可以包括:
在该下行数据的数据量不在该第二消息能承载范围之内时, 向 该用户设备发送包含该第一指示信息或第二指示信息的第二消息,向 该服务器发送第三消息, 其中, 该第二指示信息表明有下行数据要发 送至该用户设备;该第三消息用于指示该服务器向该用户设备发送该 下行数据,以便于该用户设备根据该第一指示信息或该第二指示信息 保持可通信状态以等待接收该服务器发送的该下行数据。
因此, 本发明实施例可以由该核心网控制实体直接通过非接入 层 (Non- Access Layer, 简称" NAS")信令, 例如, TAU/RAU响应消 息或附着接受消息等,将该服务器缓存的要发送到该用户设备的下行 数据发送至该用户设备, 可以减少该用户设备的等待时间, 和要发送 数据时的寻呼 (paging) 过程、 建立用户面的过程, 能实现省电的效 果且节省了网络资源。
图 5是根据本发明实施例的另一种用于传输数据的方法 500的 示意性流程图。 该方法 500 由服务器执行, 例如, SCS 或 MTC SERVER。 该方法 500可以包括:
S510, 向核心网控制实体发送第一指示信息, 该第一指示信息 表明服务器缓存有要发送到用户设备的下行数据,并表明该下行数据 的数据量, 以便于该核心网控制实体存储该第一指示信息;
S520, 在接收到该核心网控制实体收到用户设备发送的第一消 息之后根据该第一指示信息确定该下行数据的数据量在第二消息能 承载的范围之内时发送的获取该下行数据的请求时,向该核心网控制 实体发送携带该下行数据的该第二消息,以便于该核心网控制实体向 该用户设备发送携带该下行数据的该第二消息。
在本发明实施例中, 该方法 500还可以包括:
在接收到该核心网控制实体收到用户设备发送的第一消息之后 根据该第一指示信息确定该下行数据的数据量不在第二消息能承载 的范围之内时发送的该第三消息时, 向该用户设备发送该下行数据, 其中, 该第三消息用于请求该服务器向该用户设备发送该下行数据。 在本发明实施例中, 该方法 500可以包括:
在确定该下行数据的有效期到期时, 向该核心网控制实体发送 第五消息,该第五消息用于指示该核心网控制实体将该第一指示信息 删除。
或者, 在本发明实施例中, 该第一指示信息还用于指示该下行 数据的有效期,以便该核心网控制实体在根据该第一指示信息确定该 下行数据的有效期到期时, 删除该第一指示信息。
因此, 本发明实施例的方法, 通过向该核心网控制实体发送该 第一指示信息,该第一指示信息表明该服务器缓存有要发送到该用户 设备的下行数据, 并表明该下行数据的数据量, 从而该核心网控制实 体存储该第一指示信息,用于当该核心网控制实体接收到该用户设备 发送的该第一消息之后,确定该下行数据的数据量是否在该第二消息 能承载的范围之内,在该下行数据量在该第二消息能承载的范围之内 时, 向该服务器发送获取该下行数据的请求, 服务器在接收到该核心 网控制实体发送的获取该下行数据的请求后, 根据该下行数据的请 求, 向该核心网控制实体发送该下行数据, 从而, 核心网控制实体可 以直接通过非接入层 (Non- Access Layer, 简称" NAS")信令, 例如, TAU/RAU响应消息或附着接受消息等, 将该服务器缓存的要发送到 该用户设备的下行数据发送至该用户设备,可以减少该用户设备的等 待时间, 和要发送数据时的寻呼(paging)过程、建立用户面的过程, 能实现省电的效果且节省了网络资源。
本发明实施例还提供了另外一种用户传输数据的方法, 其中, 该方法可以包括:
在接收到用户设备发送的上行数据后, 确定是否缓存有要发送 到该用户设备的下行数据;
在确定缓存有要发送到该用户设备的下行数据后, 向该用户设 备发送该下行数据。
具体地说, 在该用户设备向该服务器发起业务请求, 通过业务 请求过程激活 PDP上下文或承载, 可以将上行数据发送到该服务器; 该服务器接收到该用户设备发送的上行数据之后,确定是否缓存有要 发送到该用户设备的下行数据,则该服务器可以将缓存的要发送到该 用户设备的下行数据发送至该用户设备, 其中, 该服务器可以通过已 建立的 PDP上下文或承载将缓存的针对该用户设备的下行数据发送 至该用户设备。
因此, 本发明实施例的用于传输数据的方法, 可以达到节省用 户设备电量的效果的同时, 增加服务器传输缓存数据的机率。
以上已结合图 1至图 5分别从核心网控制实体侧、 用户设备侧 和服务器侧描述根据本发明实施例的用于传输数据的方法。以下将结 合图 6至图 9以交互的方式,描述根据本发明实施例的用于传输数据 的方法。 但应理解, 以下实施例只是为了更加清楚地说明本发明, 不 应对本发明构成任何限定。
图 6是根据本发明实施例的用于传输数据的方法 600的示意性 流程图。 如图 6所示, 该方法 600包括:
5601 , 服务器(例如, SCS或 MTC SERVER)有下行数据要发 送给用户设备, 由于当前不在允许向用户设备发送数据的时间范围 内, 服务器将相应的下行数据缓存。
5602,服务器向用户设备当前所附着的核心网控制实体(例如, MME或 SGSN) 发送数据缓存指示信息, 该数据缓存指示信息表明 服务器缓存有要发送到该用户设备的下行数据。其中, 该数据缓存指 示消息可以通过机器类通信交互功能实体 ( Machine Type Communication-InterWorking Function ,简称" MTC-IWF")发送至核心 网控制实体 (SGSN或 MME), MTC-IWF通过查询归属签约服务器
(Home Subscriber Server, 简称" HSS")确定用户设备当前所附着的 核心网控制实体。核心网控制实体在接收到服务器发送的数据缓存指 示信息之后,可以设置用于表明服务器有下行数据要发送至该用户设 备的第一指示信息。
5603 , 用户设备发起 TAU/RAU过程, 用户设备将 TAU/RAU 请求发送给核心网控制实体。
5604, 执行 TAU/RAU过程的其他正常流程, 具体可以参考现 有技术, 在此不再赘述。
5605 , 当核心网控制实体向用户设备发送 TAU/RAU 接受 (accept) 消息之前, 判断当前是否设置了表明服务器缓存有要发送 该用户设备的下行数据的第一指示信息,在确定设置有该第一指示信 息时, 可以执行 S606a至 S608a, 或者执行 S606b至 S609b; 在确定 未设置有该第一指示信息时, 则可以执行 S611至 S615; 可选地, 对 于该用户设备属于时间受控的设备时,在确定是否设置有该第一指示 信息之前,该服务器还可以根据该用户设备的签约数据检查当前是否 是该用户设备的允许通信时间,只有在当前属于该用户设备的允许通 信时间范围内时, 才判断当前是否设置了该第一指示信息; 否则不执 行后续过程, 执行 TAU/RAU过程的正常流程。
S606a, 在确定设置有第一指示信息时, 核心网控制实体可以通 过 TAU/RAU接受消息将该第一指示信息转发至用户设备,也可以生 成表明有下行数据要发送至用户设备的第二指示信息, 并通过 TAU/RAU接受消息将该第二指示信息发送至该用户设备, 其中也可 以在该 TAU/RAU接受消息中包含服务器的身份标识。 并且, 核心网 控制实体指示服务器将缓存的针对该用户设备的下行数据发送给该 用户设备。
S607a, 用户设备收到携带有第一指示信息或第二指示信息的 TAU/RAU接受消息后,保持可通信状态以等待服务器发送下行数据。
S608a, 服务器按照正常流程发送下行数据, 具体可以参考现有 技术, 在此不再赘述。
其中, S606a至 S608a为根据本发明实施例用于传输数据的方 法在核心网控制实体确定自身设置有第一指示信息的情况下,该方法 后续流程的一种实现方式, S606b-S610b是另一种实现方式。
S606b,在确定设置有第一指示信息时, 核心网控制实体可以通 过 TAU/RAU接受消息将该第一指示信息转发至用户设备,也可以生 成表明有下行数据要发送至用户设备的第二指示信息, 并通过 TAU/RAU接受消息将该第二指示信息发送至该用户设备, 其中也可 以在该 TAU/RAU接受消息中包含服务器的身份标识。 并且, 核心网 控制实体指示服务器将缓存的要发送到该用户设备的下行数据发送 给该用户设备。
S607b, 用户设备接收携带有第一指示信息或第二指示信息的 TAU/RAU接受消息后,保持通信状态,并保持已建立的 RRC连接不 释放, BP , 可以不启动现有标准中规定的定时器 T3440或 T3340。 S608b,核心网控制实体接收服务器发送的下行数据通知或下行 数据。
S609b,核心网控制实体接收到服务器发送的下行数据通知或下 行数据后, 为需要传输的数据包建立相应的无线承载。 具体地说, 核 心网控制实体可以直接要求 RAN侧网元 (eNodeB或 RNC) 建立传 输相应数据包的承载对应的 E-RAB或建立传输相应数据包的 PDP上 下文对应的 RAB。 例如, 对于 SAE网络而言, MME根据收到的下 行数据通知(downlink data notification)中的 EPS 承载 ID,向 eNodeB 发送初始上下文建立(initial context setup)消息,以建立相应的 E-RAB (无线承载和 S1承载); 再例如, 对于 GPRS 网络而言, SGSN 向 RNC发送无线接入承载建立 (radio access bearer assignment)消息, 以 建立相应的 RAB (用户设备、 RNC以及 SGSN之间的用户面)。其中, 该执行过程不影响用户设备和网络侧的其他承载或 PDP上下文信息。
S610b,通过建立的承载, 下行数据可以由核心网发送至用户设 备。
以下结合 S611至 S615描述在核心网控制实体确定自身未设置 有第一指示信息的情况下,本发明实施例的用于传输数据的方法的后 续执行流程。
5611 , 在确定未设置有第一指示信息后, 核心网控制实体生成 第三指示信息, 该第三指示信息表明没有数据要发送至该用户设备, 并通过 TAU/RAU接受消息将该第三指示信息发送至该用户设备。
5612,核心网控制实体向 RAN侧网元发送用户设备上下文释放 命令。
S613, RAN侧网元释放与用户设备之间的 RRC连接。
5614, RAN侧网元发送用户设备上下文释放完成消息。
5615 , 用户设备关闭接收器或进入省电模式或关机, 以节省电 在本发明实施例中, 如果缓存在服务器中的数据存在有效期, 如果在数据到期但核心网控制实体仍保存着该第一指示信息,可以通 过以下两种方式解决: 该服务器可以向该核心网控制实体发送消息指示该核心网控制 实体将其上保存的表明该服务器缓存有要发送该用户设备的下行数 据的该第一指示信息删除。 同样, 该指示消息由该服务器发起, 通过
MTC-IWF发送给当前用户设备所附着的核心网控制实体。 然后, 该 核心网控制实体可以根据该服务器的指示, 将该第一指示信息删除。
或者, 该服务器将要发送到该用户设备的下行数据的有效期随 该第一指示信息一同发送给该核心网控制实体, 当有效期到达, 相应 数据仍旧没有发送,则该核心网控制实体删除所保存的该第一指示信 息。
还应理解, 在本发明实施例中, 在 S605该核心网控制实体确定 自身设置有该第一指示信息的情况下, 后续的执行流程除了通过 S606a-S608a的方式实现, 或 S606b-S610b的方式实现, 也可以通过 别的方式实现。 以下将介绍两种具体实现方式。
方式 1 : 在 S606a该核心网控制实体向该用户设备发送包括该 第一指示信息或该第二指示信息的 TAU/RAU接受消息之后保持与该 用户设备之间的信令连接,并在向该用户设备发送包括该第一指示信 息或该第二指示信息的 TAU/RAU接受消息的同时建立用户面承载或 PDP上下文。具体地说, 该核心网控制实体在向该用户设备返回携带 该第一指示信息或该第二指示信息的 TAU/RAU接受消息的同时, 执 行建立所有承载的 E-RAB或 PDP上下文 RAB的过程, 例如, 对于 SAE网络而言,指建立所有承载对应的用户设备与 eNodeB之间的无 线承载, 以及 eNodeB与 SGW之间的 S1用户面连接, 对于 UMTS 网络而言,指建立所有 PDP上下文对应的用户设备与 RNC之间的无 线承载以及 RNC与 SGSN之间的 Iu用户面连接,对于没有成功建立 E-RAB/RAB的承载,用户设备和网络将承载或 PDP上下文信息释放; 在 eNodeB/RNC完成建立 E-RAB/RAB后,该核心网控制实体指示该 服务器将缓存的要发送到该用户设备的下行数据发送至该用户设备, 该服务器根据该核心网控制实体的指示, 向该用户设备发送相应数 据。
方式 2: 在该用户设备的当前接入网络为 GPRS 网络时, 如果 当前用户设备没有任何 PDP上下文信息, 该用户设备在收到携带有 该第一指示信息或该第二指示信息的 TAU/RAU接受消息后,发起激 活 PDP上下文的过程以建立 PDP上下文, 在 PDP上下文建立完成, 也即 SGSN接收到用户设备发送的激活 PDP上下文接受(active PDP context accept) 消息之后, 该 SGSN通过指示该服务器将缓存的要发 送该用户设备的下行数据发送至该用户设备,该服务器根据该核心网 控制实体的指示, 向该用户设备发送相应数据, 数据通过已建立的 PDP上下文发送至该用户设备。 用户设备发起 PDP上下文激活过程 中所使用的参数可以预先配置在用户设备中。
还应理解, 本发明实施例的用于传输数据的方法 600所描述的 过程同样适用于用户设备的附着 (attach) 过程, gp, 通过附着消息 获知该用户设备已经上线或打开接收器后,该核心网控制实体触发该 服务器发送下行数据。该方式可以发生在该用户设备去附着网络后再 附着的情况, 通过该方式增加触发服务器发送下行数据的概率, 并可 同时达到节省用户设备电量的效果。
例如, 对于 UMTS附着过程而言, SGSN收到该用户设备的附 着请求消息后, 判断是否存储有该第一指示信息, 如果存储有该第一 指示信息,则该 SGSN可在附着接受消息中携带该第一指示信息或该 第二指示信息,该用户设备接收到该 SGSN发送的携带有该第一指示 信息或该第二指示信息的附着接受消息之后, 保持可通信状态, 或进 一步保持 RRC连接不释放, 并且该 SGSN触发该服务器发送下行数 据至该用户设备; 如果没有设置该第一指示信息, 则该 SGSN可以在 附着接受消息中携带第三指示信息,该用户设备接收到携带有表明没 有数据要发送至该用户设备的该第三指示信息的附着接受消息之后, 关闭接受器, 或进入省电模式或关机。具体流程与上述实施例中的用 于传输数据的方法 600流程一致, 为了简洁, 在此不再赘述。
再例如, 对于 4G附着过程而言, MME收到该用户设备的附着 请求消息后, 判断是否设置有该第一指示信息, 如果设置有该第一指 示信息, 则该 MME可在附着接受消息中携带该第一指示信息或该第 二指示信息, 该用户设备接收到该 MME发送的携带有该第一指示信 息或该第二指示信息的附着接受消息之后, 保持接收器打开, 或进一 步保持 RRC连接不释放, 及 E-RAB不释放, 并等待该服务器发送下 行数据, 并且该 MME触发该服务器发送下行数据至该用户设备; 如 果没有存储该第一指示信息,则可以在附着接受消息中携带表明没有 数据要发送至该用户设备的该第三指示信息,用户设备接收到携带有 钙第三指示信息的附着接受消息之后, 关闭接受器, 或进入省电模式 或关机。具体流程与上述实施例中的方法 600的流程一致,为了简介, 在此不再赘述。
本发明实施例还可以应用于服务用户设备的核心网控制实体 (MME、 SGSN)发生改变的场景下。具体实现方式与方法 600类似, 只是在 S602中, 服务器发送该第一指示信息至源核心网控制实体, 当核心网控制实体发生变化时, 在 S603中用户设备向新核心网控制 实体发送 TAU/RAU请求消息后, 该新核心网控制实体需要向该源核 心网控制实体获取该用户设备的信息,该源核心网控制实体返回该用 户设备的信息,并在该用户设备的信息包括表明该服务器缓存有要发 送到该用户设备的下行数据的该第一指示信息时,该新核心网控制实 体获设置该第一指示信息, 其他流程与方法 600—致, 为了简洁, 在 此不再赘述。
图 7是根据本发明实施例的用于传输数据的方法 700的示意性 流程图。 如图 7所示, 该方法 700可以包括:
5701 , 服务器(例如, SCS或 MTC SERVER)有下行数据要发 送给用户设备, 由于当前不在允许向用户设备发送数据的时间范围 内, 服务器将相应的下行数据缓存。
5702, 服务器向用户设备当前所附着的核心网控制实体发送第 一指示信息 (即为上文所述的数据缓存指示信息), 该第一指示信息 表明服务器缓存有要发送该用户设备的下行数据,并且该第一指示信 息还表明缓存的要发送该用户设备的数据量。在本发明实施例中, 上 文所述的数据缓存指示信息即为此处所述的第一指示信息, 即意味 着,核心网控制实体直接将服务器发送的数据缓存指示信息存储为第 一指示信息。
5703 , 用户设备开始执行 TAU/RAU过程, 向核心网实体发送 TAU/RAU请求消息。
5704, 当接收到用户设备发送的 TAU/RAU请求消息后, 核心 网控制实体检查是否存储有表明服务器缓存有要发送该用户设备的 下行数据的第一指示信息, 如果存储有第一指示信息, 核心网控制实 体进一步检查服务器缓存的要发送到用户设备的下行数据的数据量 是否符合通过 NAS消息 (TAU/RAU接受消息) 传递的数据量大小, 如果符合, 则执行 S705-S707, 如果不符合, 则可以参照方法 600执 行后续流程; 如果核心网控制实体确定自身未存储有第一指示信息, 则执行 S708和 S709。
5705 ,核心网控制实体决策采用通过 NAS消息将服务器缓存的 要发送该用户设备的下行数据发送至用户设备的方案, 首先, 核心网 控制实体向服务器发送指示信息,指示服务器将缓存的要发送给该用 户设备的下行数据发送给核心网控制实体, 其中, 服务器可以通过控 制面响应消息将缓存的要发送给该用户设备的下行数据发送给核心 网控制实体, 而对于 UMTS 网络, 服务器收到核心网控制实体的指 示信息后,也可以通过用户面将缓存的要发送到该用户设备的下行数 据发送给核心网控制实体。
5706, 核心网控制实体执行 TAU/RAU过程的其它步骤。其中, S705可以和 S706同时执行。
5707, 核心网控制实体向用户设备返回 TAU/RAU接受消息, 并在该 TAU/RAU接受消息中携带要发送给该用户设备的下行数据, 由此, 可以通过 NAS信令(TAU/RAU接受响应消息)将下行数据发 送给用户设备。
5708, 如果核心网控制实体中没有保存表明服务器缓存有要发 送到该用户设备的第一指示信息,则核心网控制实体按照正常流程执 行 TAU/RAU的其他步骤,
5709, 核心网控制实体生成表明没有数据要发送至该用户设备 的第三指示信息,并通过 TAU/RAU接受消息将该第三指示信息发送 到用户设备,用户设备在接收到核心网控制实体发送的携带有第三指 示信息的 TAU/RAU接受消息之后, 关闭接收器或进入省电模式或关 机, 以达到省电效果。
应理解, 根据本发明实施例的用于传输数据的方法 700也可以 用于用户设备去附着网络后再附着的过程, 即通过附着 (attach) 消 息获知用户设备已经上线或打开接收器, 核心网控制实体 (MME或 SGSN) 判断是否有下行数据要发送到该用户设备, 如果有则向服务 器获取下行数据, 通过附着接受 (attach accept) 消息携带下行数据, 将下行数据发送给用户设备。其他步骤可以参考方法 700,为了简洁, 不再赘述。
图 8是根据本发明实施例的用于传输数据的方法 800的示意性 流程图。 如图 8所示, 该方法 800可以包括:
5801 , 服务器(例如, SCS或 MTC SERVER)有下行数据要发 送给用户设备, 由于当前不在允许向用户设备发送数据的时间范围 内, 服务器将相应的下行数据缓存。
5802, 服务器向用户设备当前所附着的核心网控制实体发送数 据缓存指示信息,该数据缓存指示信息表明服务器缓存有要发送到该 用户设备的下行数据。核心网控制实体接收到服务器发送的该数据缓 存指示信息之后,可以设置用于表明服务器缓存有要发送至该用户设 备的下行数据的第一指示信息。
5803 , 用户设备有数据要发送时, 发起业务请求, 其中业务请 求消息可以通过 RAN实体发送到核心网实体。
5804, 执行业务请求过程的其他步骤, 以激活 PDP上下文、 承 载。
5805 , 核心网控制实体检查是否设置有表明服务器缓存有要发 送到用户设备的下行数据的第一指示信息。
5806, 如果有, 则可以通过直接传送(direct transfer)消息向用 户设备发送第一指示信息,或者也可以生成表明要向用户设备发送下 行数据的第二指示信息,并可以通过直接传送消息向用户设备发送第 二指示信息。 特别地, 对于 UMTS 网络, 且业务请求的目的是传数 据的情况,则可以通过业务接受消息向用户设备发送第一指示信息或 第二指示信息, 由此 S805和 S806可以融入 S804中实现。
用户设备收到该指示信息后,在指定时间内不释放 RRC连接及 PDP上下文或承载。 该指定时间与业务过程不矛盾, gP, 即使指定 时间到时但是业务过程没有结束, 用户设备也不会发起 PDP上下文 或承载的释放过程。 5807, 核心网实体通知服务器将缓存的要发送该用户设备的下 行数据发送到该用户设备, 其中, S806和 S807可以同时执行, 也可 以先执行 S807, 再执行 S806, 应根据具体情况而定, 本发明实施例 并不对此进行限定。
5808, 服务器将缓存的针对该用户设备的下行数据发送到该用 户设备,核心网控制实体将保存的表明服务器缓存有要发送该用户设 备的第一指示信息删除。
以下将结合 S809至 S812描述根据本发明另一种实施方式的用 于传输数据的方法。
5809, 业务请求的过程中激活 PDP上下文或承载后, 则用户设 备可将上行数据发送到服务器。
5810, 服务器收到该用户设备发送的上行数据后, 判断是否缓 存有要发送该用户设备的下行数据, 如果有, 则服务器将缓存的要发 送该用户设备的下行数据发送给该用户设备, 其中, 下行数据在网络 中的传输可以利用已建立的 PDP上下文或承载。
5811 , 服务器将缓存的要发送该用户设备的下行数据发送到该 用户设备。
5812,服务器指示核心网控制实体将保存的第一指示信息删除, 该核心网控制实体是当前服务用户设备的核心网控制实体。
图 9是根据本发明实施例的用于传输数据的方法 900的示意性 流程图。 如图 9所示, 该方法 900包括:
5901 , 服务器(例如, SCS或 MTC SERVER)有下行数据要发 送给用户设备, 由于当前不在允许向用户设备发送数据的时间范围 内, 服务器将相应的下行数据缓存。
5902, 服务器在缓存下行数据的同时, 向该用户设备归属的归 属签约服务器 (HSS ) 或归属位置服务器 (HLR) 发送注册请求消息
(即, 上文所述的用户设备可达通知请求消息)以获得用户设备可达 通知消息。 其中, 该注册请求消息可以通过 MTC-IWF发送到 HSS 或 HLR, 注册请求消息中至少包含服务器的地址信息和用户设备的 身份信息, 进一步可以包括待发送数据的有效期。
5903 ,根据服务器的注册请求消息, HSS或 HLR保存服务器的 地址信息和用户设备的身份信息,如果注册请求消息中包括待发送数 据的有效期, 可以进一步保存该待发送的数据的有效期, 同时设置
URRP (UE Reachability Request Parameter)用户设备可达请求参数标 识, 表示需要获知用户设备可达的信息, 也表示有要发送给该用户设 备的下行数据, 其中, 当用户设备后续发送 TAU/RAU请求或发送上 行数据请求均表示该用户设备可达, 本文以发送 TAU/RAU请求消息 为例说明。
5904, HSS或 HLR根据服务器的注册请求消息向用户设备所在 核心网控制实体发送用户设备可达通知请求消息,该用户设备可达通 知请求消息可以包括用户设备的身份信息。
5905 , 核心网控制实体收到该用户设备可达通知请求消息后, 设置 URRP (即上文所述的第一指示信息), 可以表示服务器有下行 数据要发送到该用户设备, 同时也表示可标识表示当 UE可达时, 核 心网控制实体需要通知 HSS或 HLR。
在注册请求消息中包括待发送数据的有效期时, HSS或 HLR可 以保存该待发送数据的有效期, 如果该待发送数据的有效期到期时, 数据仍旧未发送出去, HSS或 HLR可以将该 URRP标识删除, 并指 示核心网控制实体将存储的 URRP标识删除。
5906, 用户设备将 TAU/RAU请求发送给核心网实体。
5907, 核心网控制实体执行 TAU/RAU过程的正常流程。
5908, 核心网控制实体检查当前是否设置有 URRP标识。 若设 置有 URRP, 则执行 S909至 S916, 否则执行 S917至 S920。
对于时间受控的用户设备, 核心网控制实体需要进一步检查当 前是否是该用户设备的允许通信时间,如果处于允许通信时间范围则 执行 S909至 S916, 否则按现有技术完成 TAU/RAU过程。
5909, 核心网控制实体返回 TAU/RAU接受消息。
5910,核心网控制实体保持和用户设备之间的信令连接不释放, 即不向 RAN侧实体发送 S1释放请求或 Iu释放请求消息。
5911 , 核心网控制实体根据检测到的 URRP, 向用户设备发送 表明有下行数据要发送至该用户设备的指示信息(即上文所述的第二 指示信息), 以使得用户设备保持信令连接不释放。 其中, 可以通过 新的 NAS消息 (如 downlink NAS transport message (下行 NAS传输 消息)) 携带指示信息发送给 UE。
当然,也可以通过将该指示信息携带在 S909中的 TAU/RAU接 受消息中而发送给用户设备。
5912, 用户设备收到核心网控制实体发送的表明有下行数据要 发送至该用户设备的指示信息后, 保持信令连接不释放, 即不启动定 时器 T3440/T3340。 若用户设备在收到 TAU/RAU接受消息后, 已启 动 T3440/T3340定时器, 则在收到指示信息后删除 T3440定时器。
5913 , 核心网控制实体根据检测到的标识, g卩 URRP, 向 HSS 或 HLR发送用户设备可达通知消息, 以通知用户设备可达。 其中, S911和 S913可以同步执行, 不区分先后顺序。
5914, HSS或 HLR根据其保存的该 UE的相关信息, 向指定服 务器发送用户设备可达通知消息, 以通知用户设备可达, 以触发服务 器将其保存的下行数据发送给该用户设备。
5915 , 核心网控制实体在判断存在 URRP标识后, 激活所有承 载或 PDP上下文对应的无线侧的 E-RAB/RAB,即执行建立所有激活 承载/ PDP上下文的 E-RAB/RAB的过程, 对于 SAE网络指建立 UE 与 eNodeB之间的无线承载和 eNodeB与 SGW之间的 S1用户面连接, 对于 UMTS网络指建立 UE与 RNC之间的无线承载和 RNC与 SGSN 之间的 Iu用户面连接, 对于没有成功建立 E-RAB/RAB的承载, UE 和网络将承载或 PDP上下文释放。 该步骤属于可选步骤, 如果执行 该步骤则 S913a和 S914在该步骤后执行。 建立用户面承载的过程也 可以按其他实施例中所述的其它方式, 此处不再赘述。
5916, 服务器将保存的下行数据发送给该用户设备。
5917, 核心网控制实体返回 TAU/RAU接受消息。
以下将结合 S917至 S922描述在核心网控制实体在确定服务器 没有下行数据要发送至用户设备时根据本发明实施例的用于传输数 据的方法 900的后续执行流程。
5917, 核心网控制实体返回 TAU/RAU接受消息。
5918, 如果核心网控制实体没有保存 URRP标识, 则向该用户 设备发送表明服务器没有下行数据要发送的第三指示信息,该第三指 示信息可以通过以下方式实现:
通过新的 NAS消息, 如 downlink NAS transport message (下行
NAS传输消息) 携带第三指示信息发送给 UE。
通过步骤 S917 中的 TAU/RAU接受消息携带指示信息发送给 该第三指示信息用于指示 UE, 在完成 TAU/RAU过程后, 即可 以进入省电状态, 如将接收器关闭或其它省电状态或关机。
5919, 核心网控制实体发起 S1或 Iu口的信令连接释放过程, RAN侧实体发起 RRC连接的释放过程。
5920,用户设备根据 S918中收到的第三指示信息,在释放 RRC 连接后, 关闭接收器或进入其它省电模式或关机或关闭接收器。
应理解, 以上描述只是本发明的具体实施例, 不应对本发明构 成任何限定。 例如, 对于方法 900而言, 可以不执行 S911和 S912, 核心网控制实体可根据用户设备可以保持信令连接长度选择是否向 用户设备发送该表明服务器有下行数据要发送至该用户设备的指示 信息。 例如, 如果用户设备可以保持信令连接的长度为 11秒, 由于 11秒不小于预定的阈值 10秒, 所以可以不执行 S911和 S912。其中, 用户设备可以保持信令连接的长度可以根据 UE签约数据、网络配置、 或 UE上报确定。 如果核心网控制实体未向用户设备发送指示信息, 用户设备可以保持预定时间的信令连接,以等待接收服务器发送的下 行数据。 UE在保持预定时间的信令连接时间后, 可进入空闲模式或 省电状态或关机, 以进一步节省电量。 再例如, 方法 900中是根据注 册请求消息中携带的下行数据的有效期确定该待发送的数据是否到 期,本发明实施例的方法还可以不在该注册请求消息中携带该下行数 据的有效期, 而是服务器在确定该下行数据的有效期到期时, 直接向 HSS或 HLR发送用户设备可达通知取消消息, HSS或 HLR接收到该 服务器发送的用户设备可达通知取消消息之后, 可以将自身存储的 URRP标识删除, 并指示核心网控制实体将存储的 URRP标识删除。 在本发明实施例中, 当有多个服务器要发送至用户设备时, 归属签约 服务器或归属位置服务器在接收到任一个服务器发送的用户设备可 达通知取消消息后,或归属签约服务器或归属位置服务器判断出任一 服务器要发送到用户设备的数据到期后,可以删除该任一服务器的与 用户设备可达相关的信息,在归属签约服务器或归属位置服务器在全 部删除该多个服务器的与用户设备可达相关的信息之后,即没有对用 户设备可达的通知请求时,才将自身存储的 URRP标识删除, 并指示 核心网控制实体将存储的 URRP标识删除。
还应理解, 上述各方法的各过程的序号的大小并不意味着执行 顺序的先后, 各过程的执行顺序应以其功能和内在逻辑确定, 而不应 对本发明实施例的实施过程构成任何限定。
以上已结合图 1至图 9描述了根据本发明实施例的用于传输数 据的方法的示意性流程图。以下将结合图 10至 19描述根据本发明实 施例的用于传输数据的装置, 包括核心网控制实体、用户设备和服务 器。
图 10是根据本发明实施例的核心网控制实体 1000的示意性框 图。 如图 10所示, 该核心网控制实体 1000包括:
第一确定单元 1010, 用于在接收到用户设备发送的第一消息之 后, 确定是否设置有第一指示信息, 该第一指示信息表明服务器缓存 有要发送到该用户设备的下行数据;
触发单元 1020, 用于在该第一确定单元确定设置有该第一指示 信息时,触发缓存有该下行数据的服务器向该用户设备发送该下行数 据;
保持单元 1030, 用于在该第一确定单元确定设置有该第一指示 信息时, 保持与该用户设备的信令连接。
因此, 本发明实施例的核心网控制实体, 通过在接收到该用户 设备发送的该第一消息之后, 确定是否设置有该第一指示信息, 该第 一指示信息表明服务器缓存有要发送到该用户设备的下行数据,在确 定设置有该第一指示信息时, 才保持与该用户设备的信令连接, 从而 可以节省发送下行数据过程中的信令消耗,避免用户设备和网络实体 间的信令连接拆除和再建的过程,从而避免了用户设备和网络实体的 频繁状态变化, 从而节省了用户设备的电量。
可选地, 该触发单元 1020具体用于:
向该缓存有该下行数据的服务器发送下行数据下发请求消息, 以触发该缓存有该下行数据的服务器向该用户设备发送该下行数据; 或
该触发单元 1020具体用于:
向该用户设备归属的归属签约服务器或归属位置寄存器发送第 一用户设备可达通知消息,以便于该归属签约服务器或该归属位置寄 存器向该缓存有该下行数据的服务器发送第二用户设备可达通知消 息,从而触发该缓存有该下行数据的服务器向该用户设备发送该下行 数据。
可选地, 该保持单元 1030具体用于:
向该用户设备发送包含有第二指示信息的第二消息, 该第二指 示信息表明有数据要发送至该用户设备,以保持与该用户设备的信令 连接。
可选地, 该保持单元 1030具体用于:
在为该用户设备预设的可保持信令连接的长度小于预定的阈值 时, 向该用户设备发送该第二消息。
可选地, 如图 11所示, 该核心网控制实体 1000还包括: 第一发送单元 1040, 用于在确定未设置有该第一指示信息时, 向该用户设备发送包含第三指示信息的第三消息,该第三指示信息表 明没有下行数据要发送至该用户设备,以便于该用户设备根据该第三 指示信息关闭接收器或进入省电模式或关机。
可选地, 该第二指示信息中还包含该服务器的地址信息。
可选地, 如图 11所示该核心网控制实体 1000还包括: 第二确定单元 1050, 用于当该用户设备为时间受控的用户设备 时, 确定该用户设备是否处于允许通信时间范围内;
该第一确定单元 1010具体用于:
当该第二确定单元 1050 确定该用户设备处于允许通信时间范 围内时, 确定是否设置有该第一指示信息。
可选地, 该核心网控制实体 1000还包括:
第一接收单元 1061, 用于接收该用户设备归属的归属签约服务 器或归属位置寄存器在接收到第一用户设备可达通知请求消息后发 送的第二用户设备可达通知请求消息, 以及第一设置单元 1062, 用 于根据该第一接收单元接收的该第二用户设备可达通知请求消息,设 置该第一指示信息; 或包括:
第二接收单元 1063, 用于接收该缓存有该下行数据的服务器发 送的数据缓存指示信息,该数据缓存指示信息表明服务器缓存有要发 送到该用户设备的下行数据, 以及第二设置单元 1064, 用于根据该 数据缓存指示信息, 设置该第一指示信息。
可选地, 如图 11所示, 该核心网控制实体 1000还包括: 第三接收单元 1065, 用于接收为该用户设备服务的源核心网控 制实体发送的上下文响应消息;
第三设置单元 1066, 用于在该第三接收单元接收的该上下文响 应消息中包含该第一指示信息时, 设置该第一指示信息。
可选地, 如图 11所示, 该核心网控制实体 1000还包括: 第一删除单元 1071, 用于在根据该第一指示信息, 确定该下行 数据的有效期到期时, 删除该第一指示信息, 其中, 该第一指示信息 还用于指示该下行数据的有效期, 其中, 该第一指示信息指示的该下 行数据的有效期是根据缓存该下行数据的服务器发送的数据缓存指 示信息携带的该下行数据的有效期设置的; 或包括:
第四接收单元 1072, 用于接收该缓存有该下行数据的服务器在 该下行数据的有效期到期后发送的第四消息,该第四消息用于指示将 该第一指示信息删除, 以及第二删除单元 1073, 用于根据该第五接 收单元接收的该第四消息, 删除该第一指示信息; 或包括
第五接收单元 1074, 用于接收该用户设备归属的归属签约服务 器或归属位置寄存器发送的第一用户设备可达通知取消消息,以及第 三删除单元 1075, 用于根据该第五接收单元 1074接收的该第一用户 设备可达通知取消消息, 删除该第一指示信息。
可选地, 该第五接收单元 1074具体用于:
接收该归属签约服务器或该归属位置寄存器在根据该缓存有该 用户设备的下行数据的服务器发送的第二用户设备可达通知取消消 息后发送的该第一用户设备可达通知取消消息; 或具体用于:
接收该归属签约服务器或该归属位置服务器在根据第一用户设 备可达通知请求消息确定该下行数据到期后发送的该第一用户设备 可达通知取消消息, 其中, 该第一用户设备可达通知请求消息携带该 下行数据的有效期。
可选地, 如图 11所示, 该核心网控制实体 1000还包括: 建立单元 1080, 用于在接收到该缓存有该下行数据的服务器发 送的下行数据通知消息或下行数据后,建立传输相应数据包的承载对 应的演进的通用陆基无线接入网无线接入承载或建立传输相应数据 包的分组数据协议上下文对应的无线接入承载; 或者, 用于建立用户 面承载或分组数据协议上下文。
图 12是根据本发明实施例的核心网控制实体 1100的示意性框 图。 如图 12所示, 该核心网控制实体 1100包括:
接收器 1110, 用于接收用户设备发送的第一消息;
处理器 1120,用于在该接收器 1110接收到用户设备发送的第一 消息之后, 确定是否设置有第一指示信息, 该第一指示信息表明服务 器缓存有要发送到该用户设备的下行数据;在确定设置有该第一指示 信息时, 保持与该用户设备的信令连接, 并触发缓存有该下行数据的 服务器向该用户设备发送该下行数据。
因此, 本发明实施例的核心网控制实体, 通过在接收到该用户 设备发送的该第一消息之后, 确定是否设置有该第一指示信息, 该第 一指示信息表明服务器缓存有要发送到该用户设备的下行数据,在确 定设置有该第一指示信息时, 才保持与该用户设备的信令连接, 从而 可以节省用户设备的电量。
可选地, 如图 13所示, 该核心网控制实体 1110还包括发送器 1130, 其中, 该处理器 1120, 具体用于指示该发送器 1130向该缓存 有该下行数据的服务器发送下行数据下发请求消息,以触发该缓存有 该下行数据的服务器向该用户设备发送该下行数据; 该发送器 1130, 用于根据该处理器 1120的指示向该缓存有该下行数据的服务器发送 下行数据下发请求消息,以触发该缓存有该下行数据的服务器向该用 户设备发送该下行数据; 或
该处理器 1120,具体用于指示该发送器 1130向该用户设备归属 的归属签约服务器或归属位置寄存器发送第一用户设备可达通知消 息,以便于该归属签约服务器或该归属位置寄存器向该缓存有该下行 数据的服务器发送第二用户设备可达通知消息,从而触发该缓存有该 下行数据的服务器向该用户设备发送该下行数据; 该发送器 1130, 用于根据该处理器 1120的指示向该用户设备归属的归属签约服务器 或归属位置寄存器发送第一用户设备可达通知消息。
可选地, 如图 13所示, 该核心网控制实体 1110还包括发送器 1130, 其中, 该处理器 1120, 具体用于指示发送器 1130向该用户设 备发送包含有第二指示信息的第二消息,该第二指示信息表明有数据 要发送至该用户设备, 以保持与该用户设备的信令连接; 该发送器 1130, 用于根据该处理器 1120的指示, 向该用户设备发送包含有第 二指示信息的第二消息,该第二指示信息表明有数据要发送至该用户 设备, 以保持与该用户设备的信令连接。
可选地,该处理器 1120具体用于在确定为该用户设备预设的可 保持信令连接的长度小于预定的阈值时, 指示该发送器 1130向该用 户设备发送该第二消息。
可选地, 如图 13所示, 该核心网控制实体 1110还包括发送器 1130, 其中, 该处理器, 具体用于确定未设置有该第一指示信息时, 指示该发送器 1130 向该用户设备发送包含第三指示信息的第三消 息, 该第三指示信息表明没有下行数据要发送至该用户设备, 以便于 该用户设备根据该第三指示信息关闭接收器或进入省电模式或关机; 该发送器 1130, 用于根据所述处理器 1120的指示向该用户设备发送 包含第三指示信息的第三消息,该第三指示信息表明没有下行数据要 发送至该用户设备,以便于该用户设备根据该第三指示信息关闭接收 器或进入省电模式或关机。
可选地, 该第二指示信息中还包含该服务器的地址信息。
可选地, 该处理器 1120, 还用于当该用户设备为时间受控的用 户设备时, 确定该用户设备是否处于允许通信时间范围内; 并具体用 于在确定该用户设备处于允许通信时间范围内时,确定是否设置有该 第一指示信息。
可选地, 该接收器 1110, 还用于接收该用户设备归属的归属签 约服务器或归属位置寄存器在接收到第一用户设备可达通知请求消 息后发送的第二用户设备可达通知请求消息, 以及该处理器 1120, 还用于根据该接收器 1110接收的该第二用户设备可达通知请求消息, 设置该第一指示信息; 或者,
该接收器 1110, 还用于接收该缓存有该下行数据的服务器发送 的数据缓存指示信息,该数据缓存指示信息表明服务器缓存有要发送 到该用户设备的下行数据, 以及该处理器 1120, 还用于根据该数据 缓存指示信息, 设置该第一指示信息。
可选地, 该接收器 1110, 还用于接收为该用户设备服务的源核 心网控制实体发送的上下文响应消息; 该处理器 1120, 还用于在该 接收器 1110接收的该上下文响应消息中包含该第一指示信息时, 设 置该第一指示信息。
可选地, 该处理器 1120, 还用于在根据该第一指示信息, 确定 该下行数据的有效期到期时, 删除该第一指示信息, 其中, 该第一指 示信息还用于指示该下行数据的有效期, 其中, 该第一指示信息指示 的该下行数据的有效期是根据缓存该下行数据的服务器发送的数据 缓存指示信息携带的该下行数据的有效期设置的。
可选地, 该接收器 1110, 还用于接收该缓存有该下行数据的服 务器在该下行数据的有效期到期后发送的第四消息,该第四消息用于 指示将该第一指示信息删除, 以及该处理器 1120, 还用于根据该接 收器 1110接收的该第四消息, 删除该第一指示信息。
可选地, 该接收器 1110, 还用于接收该用户设备归属的归属签 约服务器或归属位置寄存器发送的第一用户设备可达通知取消消息, 以及该处理器 1120, 还用于根据该接收器 1110接收的该第一用户设 备可达通知取消消息, 删除该第一指示信息。
可选地, 该接收器 1110具体用于:
接收该归属签约服务器或该归属位置寄存器在根据该缓存有该 用户设备的下行数据的服务器发送的第二用户设备可达通知取消消 息后发送的该第一用户设备可达通知取消消息; 或具体用于:
接收该归属签约服务器或该归属位置服务器在根据第一用户设 备可达通知请求消息确定该下行数据到期后发送的该第一用户设备 可达通知取消消息, 其中, 该第一用户设备可达通知请求消息携带该 下行数据的有效期。 可选地, 该接收器 1110还用于接收到该缓存有该下行数据的 服务器发送的下行数据通知消息或下行数据, 以及该处理器 1120, 还用于在该接收器 1110接收到该缓存有该下行数据的服务器发送的 下行数据通知消息或下行数据后,建立传输相应数据包的承载对应的 演进的通用陆基无线接入网无线接入承载或建立传输相应数据包的 分组数据协议上下文对应的无线接入承载。
可选地, 该处理器 1120, 还用于建立用户面承载或分组数据协 议上下文。
因此, 本发明实施例的核心网控制实体, 因此, 本发明实施例 的用于传输数据的方法,通过在接收到该用户设备发送的该第一消息 之后, 确定是否设置有该第一指示信息, 该第一指示信息表明服务器 缓存有要发送到该用户设备的下行数据,在确定设置有该第一指示信 息时, 才保持与该用户设备的信令连接, 从而可以节省发送下行数据 过程中的信令消耗,避免用户设备和网络实体间的信令连接拆除和再 建的过程, 从而避免了用户设备和网络实体的频繁状态变化, 从而节 省了用户设备的电量。进一步地, 该核心网控制实体在确定该服务器 有下行数据要发送到该用户设备时, 建立发送下行数据所需的承载, 以此节省传输下行数据所需的时间。 进一步地, 在本发明实施例中, 在确定该用户设备处于允许通信时间范围内后,才确定是否设置有该 第一指示信息,可以减轻网络的负担。进一步地,在本发明实施例中, 该第一消息可以为 TAU/RAU请求消息、 附着请求消息或者业务请求 消息,从而可以增加该服务器向该用户设备发送缓存的下行数据的机 会, 避免数据被无效或被删除掉。
图 14是根据本发明实施例的用户设备 1200的示意性框图。 如 图 14所示, 该用户设备 1200包括:
发送单元 1210, 用于向核心网控制实体发送第一消息; 省电单元 1220, 用于在接收到该核心网实体根据该第一消息发 送的包含有第三指示信息的第三消息时,关闭接收器或进入省电模式 或关机, 其中, 该第三指示信息表明服务器没有要发送到用户设备的 下行数据。
因此, 本发明实施例的用户设备, 通过向核心网控制实体发送 第一消息,在接收到该核心网实体根据该第一消息发送的包含有第三 指示信息的第三消息时, 关闭接收器或进入省电模式或关机, 其中, 该第三指示信息表明没有要发送到该用户设备的下行数据,从而可以 节省用户设备的电量。
可选地, 如图 15所示, 该用户设备 1200还包括:
保持单元 1230, 用于在接收到该核心网控制实体根据该第一消 息发送的包含有第二指示信息的第二消息时, 保持已建立的信令连 接, 以等待接收该下行数据, 其中该第二指示信息表明服务器有要下 行数据要发送至该用户设备。
可选地, 如图 15所示, 在该用户设备 1200包括保持单元 1220 时, 该用户设备还包括:
确定单元 1240, 用于在当前接入网络为通用分组无线服务技术 网络时, 确定是否有分组数据协议上下文保留;
发起单元 1250, 用于在没有任何分组数据协议上下文保留时, 发起分组数据协议上下文的过程以建立分组数据协议上下文。
因此, 本发明实施例的用户设备, 通过向核心网控制实体发送 第一消息,在接收到该核心网实体根据该第一消息发送的包含有第三 指示信息的第三消息时, 关闭接收器或进入省电模式或关机, 其中, 该第三指示信息表明没有要发送到该用户设备的下行数据,在接收到 该核心网控制实体根据该第一消息发送的包含有第二指示信息的第 二消息时, 保持已建立的信令连接, 以等待接收该下行数据, 其中该 第二指示信息表明有要发送至该用户设备,从而可以节省用户设备的 电量。
图 16是根据本发明实施例的用户设备 1300的示意性框图。 如 图 16所示, 该用户设备 1300包括:
发送器 1310, 用于向核心网控制实体发送第一消息;
接收器 1320, 用于接收该核心网控制实体根据该第一消息发送 的包含有第三指示信息的第三消息, 其中, 该第三指示信息表明服务 器没有要发送到用户设备的下行数据;
处理器 1330, 用于在该接收器 1320接收到该第三消息时, 关 闭接收器或进入省电模式或关机, 因此, 本发明实施例的用户设备, 通过向核心网控制实体发送 第一消息,在接收到该核心网实体根据该第一消息发送的包含有第三 指示信息的第三消息时, 关闭接收器或进入省电模式或关机, 其中, 该第三指示信息表明没有要发送到该用户设备的下行数据,从而可以 节省用户设备的电量。
可选地,该接收器 1320还用于接收该核心网控制实体根据该第 一消息发送的包含有第二指示信息的第二消息, 其中, 该第二指示信 息表明服务器有要下行数据要发送至该用户设备。
该处理器 1330, 还用于在该接收器接收到该第二消息时, 保持 已建立的信令连接, 以等待接收该下行数据。
可选地,该处理器 1330还用于在当前接入网络为通用分组无线 服务技术网络时, 确定是否有分组数据协议上下文保留, 并在没有任 何分组数据协议上下文保留时,发起分组数据协议上下文的过程以建 立分组数据协议上下文。
因此, 本发明实施例的用户设备, 通过向核心网控制实体发送 第一消息,在接收到该核心网实体根据该第一消息发送的包含有第三 指示信息的第三消息时, 关闭接收器或进入省电模式或关机, 其中, 该第三指示信息表明没有要发送到该用户设备的下行数据,在接收到 该核心网控制实体根据该第一消息发送的包含有第二指示信息的第 二消息时, 保持已建立的信令连接, 以等待接收该下行数据, 其中该 第二指示信息表明有要发送至该用户设备,从而可以节省用户设备的 电量,
图 17是根据本发明实施例的服务器 1400的示意性框图。 如图 17所示, 该服务器 1400包括第一发送单元 1410、 接收单元 1420和 第二发送单元 1430; 其中,
第一发送单元 1410, 用于向用户设备归属的归属签约服务器或 归属位置寄存器发送第一用户设备可达通知请求消息,以便于该归属 签约服务器或该归属位置寄存器向该用户设备归属的核心网控制实 体发送第二用户设备可达通知请求消息,从而该核心网控制实体根据 该第二用户设备可达通知请求消息设置第一指示信息,该第一指示信 息表明服务器中缓存有要发送至该用户设备的下行数据,以及接收单 元 1420, 用于接收该归属签约服务器或该归属位置寄存器在接收到 该核心网控制实体根据该第一指示信息发送的第一用户设备可达通 知消息后的发送的第二用户设备可达通知消息, 以及第二发送单元 1430, 用于向该用户设备发送该下行数据; 或
第一发送单元 1410, 用于向用户设备归属的核心网控制实体发 送数据缓存指示信息,以便于该核心网控制实体根据该数据缓存指示 信息设置第一指示信息, 其中, 该数据缓存指示信息表明服务器缓存 有要发送至该用户设备的下行数据,且该第一指示信息表明服务器中 缓存有要发送至该用户设备的下行数据, 以及接收单元 1420, 用于 接收该核心网控制实体根据该第一指示信息发送的下行数据下发请 求消息, 以及第二发送单元 1430, 用于向该用户设备发送该下行数 据。
可选地, 如图 18所示, 该服务器 1400还包括: 第三发送单元 1440, 用于在确定该下行数据到期时, 向该归属签约服务器或该归属 位置寄存器发送第二用户设备可达通知取消消息,以使得该归属签约 服务器或该归属位置寄存器向该核心网控制实体发送第一用户设备 可达通知取消消息, 从而, 该核心网控制实体根据该第一用户设备可 达通知取消消息, 删除该第一指示信息。
可选地, 该第一用户设备可达通知请求消息还包括该下行数据 的有效期,以便该归属签约服务器在根据该第一用户设备可达通知请 求消息确定该下行数据的有效期到期时,向该核心网控制实体发送第 一用户设备可达通知取消消息, 从而, 该核心网控制实体根据该第一 用户设备可达通知取消消息, 删除该第一指示信息。
可选地, 如图 18所示, 该服务器 1400还包括: 第四发送单元 1450, 用于在确定该下行数据的有效期到期时, 向该核心网控制实体 发送第四消息,该第四消息用于指示该核心网控制实体将该第一指示 信息删除。
可选地, 该数据缓存指示信息还包括该下行数据的有效期, 以 便于该核心网控制实体设置还用于指示该下行数据的有效期的该第 一指示信息,并在该下行数据的有效期到期时,删除该第一指示信息。
因此, 本发明实施例的服务器, 通过向归属签约服务器或归属 位置寄存器发送第一用户设备可达通知请求消息,以便于该归属签约 服务器或归属位置寄存器向核心网控制实体发送第二用户设备可达 通知请求消息,从而该核心网控制实体根据该第二用户设备可达通知 请求消息设置第一指示信息,该第一指示信息表明缓存有要发送至该 用户设备的下行数据,并在接收到该归属签约服务器或归属位置寄存 器在接收到该核心网控制实体根据该第一指示信息发送的第一用户 设备可达通知响应消息后的发送的第二用户设备可达通知响应消息, 向该用户设备发送该下行数据;或向核心网控制实体发送数据缓存指 示信息, 以便于该核心网控制实体根据该数据缓存指示信息设置第一 指示信息, 其中, 该数据缓存指示信息表明缓存有要发送至该用户设 备的下行数据,且该第一指示信息表明其他实体有要发送至该用户设 备的下行数据,并在接收到该核心网控制实体根据该第一指示信息发 送的触发该下行数据的请求消息时, 向该用户设备发送该下行数据, 可以节省用户设备的电量。
图 19是根据本发明实施例的服务器 1500的示意性框图。 如图 19所示,该服务器 1500包括处理器 1510、发送器 1520和接收器 1530。
其中, 该处理器 1510, 用于指示发送器 1520 向用户设备归属 的归属签约服务器或归属位置寄存器发送第一用户设备可达通知请 求消息, 以便于该归属签约服务器或该归属位置寄存器向该用户设备 归属的核心网控制实体发送第二用户设备可达通知请求消息,从而该 核心网控制实体根据该第二用户设备可达通知请求消息设置第一指 示信息,该第一指示信息表明服务器中缓存有要发送至该用户设备的 下行数据;
该发送器 1520, 用于根据该处理器 1510的指示, 向用户设备 归属的归属签约服务器或归属位置寄存器发送第一用户设备可达通 知请求消息;
该接收器 1530, 用于接收该归属签约服务器或该归属位置寄存 器在接收到该核心网控制实体根据该第一指示信息发送的第一用户 设备可达通知消息后的发送的第二用户设备可达通知消息;
该处理器 1510, 还用于根据该接收器接收的该第二用户设备可 达通知消息, 指示该发送器 1520向该用户设备发送该下行数据; 该发送器 1520, 还用于根据该处理器 1510的指示, 向该用户 设备发送该下行数据。
或者, 该处理器 1510, 用于指示发送器 1520 向用户设备归属 的核心网控制实体发送数据缓存指示信息,以便于该核心网控制实体 根据该数据缓存指示信息设置第一指示信息, 其中, 该数据缓存指示 信息表明服务器缓存有要发送至该用户设备的下行数据,且该第一指 示信息表明服务器中缓存有要发送至该用户设备的下行数据;
该发送器 1520, 用于根据该发送器 1510的指示向用户设备归 属的核心网控制实体发送数据缓存指示信息;
该接收器 1530, 用于接收该核心网控制实体根据该第一指示信 息发送的下行数据下发请求消息;
该处理器 1510, 还用于根据该接收器 1530接收的该下行数据 下发请求消息, 指示发送器 1530向该用户设备发送该下行数据; 该发送器 1520, 还用于根据该处理器 1510的指示向该用户设 备发送该下行数据。
可选地, 该处理器 1510还用于在确定该下行数据到期时, 指示 该发送器 1520向该归属签约服务器或该归属位置寄存器发送第二用 户设备可达通知取消消息,以使得该归属签约服务器或该归属位置寄 存器向该核心网控制实体发送第一用户设备可达通知取消消息, 从 而, 该核心网控制实体根据该第一用户设备可达通知取消消息, 删除 该第一指示信息;
该发送器 1520, 还用于根据该处理器 1510的指示, 向该归属 签约服务器或该归属位置寄存器发送第二用户设备可达通知取消消 息。
可选地, 该第一用户设备可达通知请求消息还包括该下行数据 的有效期,以便该归属签约服务器在根据该第一用户设备可达通知请 求消息确定该下行数据的有效期到期时,向该核心网控制实体发送第 一用户设备可达通知取消消息, 从而, 该核心网控制实体根据该第一 用户设备可达通知取消消息, 删除该第一指示信息。
可选地, 该处理器 1510, 还用于在确定该下行数据的有效期到 期时, 指示该发送器 1520向该核心网控制实体发送第四消息, 该第 四消息用于指示该核心网控制实体将该第一指示信息删除;
该发送器 1520, 还用于根据该处理器的指示, 向该核心网控制 实体发送该第四消息。
可选地, 该数据缓存指示信息还包括该下行数据的有效期, 以 便于该核心网控制实体设置还用于指示该下行数据的有效期的该第 一指示信息,并在该下行数据的有效期到期时,删除该第一指示信息。
因此, 本发明实施例的服务器, 通过向归属签约服务器或归属 位置寄存器发送第一用户设备可达通知请求消息,以便于该归属签约 服务器或归属位置寄存器向核心网控制实体发送第二用户设备可达 通知请求消息,从而该核心网控制实体根据该第二用户设备可达通知 请求消息设置第一指示信息,该第一指示信息表明缓存有要发送至该 用户设备的下行数据,并在接收到该归属签约服务器或归属位置寄存 器在接收到该核心网控制实体根据该第一指示信息发送的第一用户 设备可达通知响应消息后的发送的第二用户设备可达通知响应消息, 向该用户设备发送该下行数据;或向核心网控制实体发送数据缓存指 示信息, 以便于该核心网控制实体根据该数据缓存指示信息设置第一 指示信息, 其中, 该数据缓存指示信息表明缓存有要发送至该用户设 备的下行数据,且该第一指示信息表明其他实体有要发送至该用户设 备的下行数据,并在接收到该核心网控制实体根据该第一指示信息发 送的触发该下行数据的请求消息时, 向该用户设备发送该下行数据, 可以节省用户设备的电量。
应理解, 本发明方法实施例中的特征, 在适当的情况下, 适用 于本发明设备实施例, 反之亦然。
本领域普通技术人员可以意识到, 结合本文中所公开的实施例 描述的各示例的单元及算法步骤, 能够以电子硬件、或者计算机软件 和电子硬件的结合来实现。 这些功能究竟以硬件还是软件方式来执 行, 取决于技术方案的特定应用和设计约束条件。专业技术人员可以 对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实 现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁, 上述描述的系统、装置和单元的具体工作过程, 可以参考前述方法实 施例中的对应过程, 在此不再赘述。
在本申请所提供的几个实施例中, 应该理解到, 所揭露的系统、 装置和方法, 可以通过其它的方式实现。 例如, 以上所描述的装置实 施例仅仅是示意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能 划分, 实际实现时可以有另外的划分方式, 例如多个单元或组件可以 结合或者可以集成到另一个系统, 或一些特征可以忽略, 或不执行。 另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以 是通过一些接口, 装置或单元的间接耦合或通信连接, 可以是电性, 机械或其它的形式。
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单元来实现本实施例方案的目的。
另外, 在本发明各个实施例中的各功能单元可以集成在一个处 理单元中, 也可以是各个单元单独物理存在, 也可以两个或两个以上 单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销 售或使用时, 可以存储在一个计算机可读取存储介质中。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或 者该技术方案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 施例所述方法的全部或部分步骤。 而前述的存储介质包括: u盘、 移 动硬盘、 只读存储器 (ROM, Read-Only Memory )、 随机存取存储器 (RAM, Random Access Memory )、 磁碟或者光盘等各种可以存储程 序代码的介质。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围 并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术 范围内,可轻易想到变化或替换,都应涵盖在本发明的保护范围之内。 因此, 本发明的保护范围应所述以权利要求的保护范围为准。

Claims

权 利 要 求
1. 一种用于传输数据的方法, 其特征在于, 包括:
在接收到用户设备发送的第一消息之后,确定是否设置有第一指 示信息,所述第一指示信息表明服务器缓存有要发送到所述用户设备 的下行数据;
在确定设置有所述第一指示信息时,保持与所述用户设备的信令 连接,并触发缓存有所述下行数据的服务器向所述用户设备发送所述 下行数据。
2. 根据权利要求 1所述的方法, 其特征在于, 所述触发缓存有 所述下行数据的服务器向所述用户设备发送所述下行数据, 包括: 向所述缓存有所述下行数据的服务器发送下行数据下发请求消 息,以触发所述缓存有所述下行数据的服务器向所述用户设备发送所 述下行数据; 或包括:
向所述用户设备归属的归属签约服务器或归属位置寄存器发送 第一用户设备可达通知消息,以便于所述归属签约服务器或所述归属 位置寄存器向所述缓存有所述下行数据的服务器发送第二用户设备 可达通知消息,从而触发所述缓存有所述下行数据的服务器向所述用 户设备发送所述下行数据。
3. 根据权利要求 1或 2所述的方法, 其特征在于, 所述保持与 所述用户设备的信令连接, 包括:
向所述用户设备发送包含有第二指示信息的第二消息,所述第二 指示信息表明有数据要发送至所述用户设备,以保持与所述用户设备 的信令连接。
4. 根据权利要求 3所述的方法, 其特征在于, 所述向所述用户 设备发送包含第二指示信息的第二消息, 包括:
在为所述用户设备预设的可保持信令连接的长度小于预定的阈 值时, 向所述用户设备发送所述第二消息。
5. 根据权利要求 1至 4中任一项所述的方法, 其特征在于, 所 述方法还包括:
在确定未设置有所述第一指示信息时, 向所述用户设备发送包含 第三指示信息的第三消息,所述第三指示信息表明没有下行数据要发 送至所述用户设备,以便于所述用户设备根据所述第三指示信息关闭 接收器或进入省电模式或关机。
6. 根据权利要求 3或 4所述的方法, 其特征在于, 所述第二指 示信息中还包含所述服务器的地址信息。
7. 根据权利要求 1至 6中任一项所述的方法, 其特征在于, 在 接收到所述用户设备发送的第一消息之后,确定是否设置有所述第一 指示信息之前, 所述方法还包括:
当所述用户设备为时间受控的用户设备时,确定所述用户设备是 否处于允许通信时间范围内;
所述确定是否设置有第一指示信息, 包括:
当确定所述用户设备处于允许通信时间范围内时,确定是否设置 有所述第一指示信息。
8. 根据权利要求 1至 7中任一项所述的方法, 其特征在于, 在 所述确定是否设置有第一指示信息之前, 所述方法还包括:
接收所述用户设备归属的归属签约服务器或归属位置寄存器在 接收到第一用户设备可达通知请求消息后发送的第二用户设备可达 通知请求消息, 根据所述第二用户设备可达通知请求消息, 设置所述 第一指示信息; 或
接收所述缓存有所述下行数据的服务器发送的数据缓存指示信 息,所述数据缓存指示信息表明服务器缓存有要发送到所述用户设备 的下行数据, 根据所述数据缓存指示信息, 设置所述第一指示信息。
9. 根据权利要求 1至 7中任一项所述的方法, 其特征在于, 在 所述确定是否设置有第一指示信息之前, 所述方法还包括:
接收为所述用户设备服务的源核心网控制实体发送的上下文响 应消息;
在所述上下文响应消息中包含所述第一指示信息时,设置所述第 一指示信息。
10. 根据权利 1至 9中任一项所述的方法, 其特征在于, 在设置 所述第一指示信息之后, 确定是否设置有所述第一指示信息之前, 所 述方法还包括:
在根据所述第一指示信息, 确定所述下行数据的有效期到期时, 删除所述第一指示信息, 其中, 所述第一指示信息还用于指示所述下 行数据的有效期, 其中, 所述第一指示信息指示的所述下行数据的有 效期是根据缓存所述下行数据的服务器发送的数据缓存指示信息携 带的所述下行数据的有效期设置的; 或包括:
接收所述缓存有所述下行数据的服务器在所述下行数据的有效 期到期后发送的第四消息,所述第四消息用于指示将所述第一指示信 息删除, 根据所述第四消息, 删除所述第一指示信息; 或包括
接收所述用户设备归属的归属签约服务器或归属位置寄存器发 送的第一用户设备可达通知取消消息,根据所述第一用户设备可达通 知取消消息, 删除所述第一指示信息。
11. 根据权利要求 10所述的方法, 其特征在于, 接收所述用户设备 归属的归属签约服务器或归属位置寄存器发送的第一用户设备可达 通知取消消息, 包括:
接收所述归属签约服务器或所述归属位置寄存器在根据所述缓 存有所述用户设备的下行数据的服务器发送的第二用户设备可达通 知取消消息后发送的所述第一用户设备可达通知取消消息; 或包括: 接收所述归属签约服务器或所述归属位置服务器在根据第一用户设 备可达通知请求消息确定所述下行数据到期后发送的所述第一用户 设备可达通知取消消息, 其中, 所述第一用户设备可达通知请求消息 携带所述下行数据的有效期。
12. 根据权利要求 3或 4所述的方法, 所述方法还包括: 在接收到所述缓存有所述下行数据的服务器发送的下行数据通 知消息或下行数据后,建立传输相应数据包的承载对应的演进的通用 陆基无线接入网无线接入承载或建立传输相应数据包的分组数据协 议上下文对应的无线接入承载; 或者,
建立用户面承载或分组数据协议上下文。
13. 一种用于传输数据的方法, 其特征在于, 包括: 在接收到所述核心网实体根据所述第一消息发送的包含有第三 指示信息的第三消息时, 关闭接收器或进入省电模式或关机, 其中, 所述第三指示信息表明服务器没有要发送到用户设备的下行数据。
14. 根据权利要求 13所述的方法, 其特征在于, 所述方法还包 括:
在接收到所述核心网控制实体根据所述第一消息发送的包含有 第二指示信息的第二消息时, 保持已建立的信令连接, 以等待接收所 述下行数据,其中所述第二指示信息表明服务器有下行数据要发送至 所述用户设备。
15. 根据权利要求 13或 14所述的方法, 其特征在于, 在所述方 法包括在接收到所述核心网控制实体根据所述第一消息发送的包含 有第二指示信息的第二消息时, 保持已建立的信令连接时, 所述方法 还包括:
在当前接入网络为通用分组无线服务技术网络时,确定是否有分 组数据协议上下文保留;
在没有任何分组数据协议上下文保留时,发起分组数据协议上下 文的过程以建立分组数据协议上下文。
16. 一种用于传输数据的方法, 其特征在于, 包括:
向用户设备归属的归属签约服务器或归属位置寄存器发送第一 用户设备可达通知请求消息,以便于所述归属签约服务器或所述归属 位置寄存器向所述用户设备归属的核心网控制实体发送第二用户设 备可达通知请求消息,从而所述核心网控制实体根据所述第二用户设 备可达通知请求消息设置第一指示信息,所述第一指示信息表明服务 器中缓存有要发送至所述用户设备的下行数据,并在接收到所述归属 签约服务器或所述归属位置寄存器在接收到所述核心网控制实体根 据所述第一指示信息发送的第一用户设备可达通知消息后的发送的 第二用户设备可达通知消息时, 向所述用户设备发送所述下行数据; 或
向用户设备归属的核心网控制实体发送数据缓存指示信息, 以便 于所述核心网控制实体根据所述数据缓存指示信息设置第一指示信 息, 其中, 所述数据缓存指示信息表明服务器缓存有要发送至所述用 户设备的下行数据,且所述第一指示信息表明服务器中缓存有要发送 至所述用户设备的下行数据,并在接收到所述核心网控制实体根据所 述第一指示信息发送的下行数据下发请求消息时,向所述用户设备发 送所述下行数据。
17. 根据权利要求 16所述的方法, 其特征在于, 在所述方法包 括向所述归属签约服务器或归属位置寄存器发送所述第一用户设备 可达通知请求消息时,
所述方法还包括: 在确定所述下行数据到期时, 向所述归属签约 服务器或所述归属位置寄存器发送第二用户设备可达通知取消消息, 以使得所述归属签约服务器或所述归属位置寄存器向所述核心网控 制实体发送第一用户设备可达通知取消消息, 从而, 所述核心网控制 实体根据所述第一用户设备可达通知取消消息,删除所述第一指示信 息; 或者
所述第一用户设备可达通知请求消息还包括所述下行数据的有 效期,以便所述归属签约服务器在根据所述第一用户设备可达通知请 求消息确定所述下行数据的有效期到期时,向所述核心网控制实体发 送第一用户设备可达通知取消消息, 从而, 所述核心网控制实体根据 所述第一用户设备可达通知取消消息, 删除所述第一指示信息。
18. 根据权利要求 16所述的方法, 其特征在于, 在所述方法包 括向核心网控制实体发送所述数据缓存指示信息时,
所述方法还包括: 在确定所述下行数据的有效期到期时, 向所述 核心网控制实体发送第四消息,所述第四消息用于指示所述核心网控 制实体将所述第一指示信息删除; 或者
所述数据缓存指示信息还包括所述下行数据的有效期, 以便于所 述核心网控制实体设置还用于指示所述下行数据的有效期的所述第 一指示信息, 并在所述下行数据的有效期到期时, 删除所述第一指示 信息。
19. 一种核心网控制实体, 其特征在于, 包括:
第一确定单元, 用于在接收到用户设备发送的第一消息之后, 确 定是否设置有第一指示信息,所述第一指示信息表明服务器缓存有要 发送到所述用户设备的下行数据;
触发单元,用于在所述第一确定单元确定设置有所述第一指示信 息时,触发缓存有所述下行数据的服务器向所述用户设备发送所述下 行数据;
保持单元,用于在所述第一确定单元确定设置有所述第一指示信 息时, 保持与所述用户设备的信令连接。
20. 根据权利要求 19所述的核心网控制实体, 其特征在于, 所述触发单元具体用于:
向所述缓存有所述下行数据的服务器发送下行数据下发请求消 息,以触发所述缓存有所述下行数据的服务器向所述用户设备发送所 述下行数据; 或
所述触发单元具体用于:
向所述用户设备归属的归属签约服务器或归属位置寄存器发送 第一用户设备可达通知消息,以便于所述归属签约服务器或所述归属 位置寄存器向所述缓存有所述下行数据的服务器发送第二用户设备 可达通知消息,从而触发所述缓存有所述下行数据的服务器向所述用 户设备发送所述下行数据。
21.根据权利要求 19或 20所述的核心网控制实体,其特征在于, 所述保持单元具体用于:
向所述用户设备发送包含有第二指示信息的第二消息,所述第二 指示信息表明有数据要发送至所述用户设备,以保持与所述用户设备 的信令连接。
22. 根据权利要求 21所述的核心网控制实体, 其特征在于, 所 述保持单元具体用于:
在为所述用户设备预设的可保持信令连接的长度小于预定的阈 值时, 向所述用户设备发送所述第二消息。
23. 根据权利要求 19至 22中任一项所述的核心网控制实体, 其 特征在于, 所述核心网控制实体还包括:
第一发送单元, 用于在确定未设置有所述第一指示信息时, 向所 述用户设备发送包含第三指示信息的第三消息,所述第三指示信息表 明没有下行数据要发送至所述用户设备,以便于所述用户设备根据所 述第三指示信息关闭接收器或进入省电模式或关机。
24.根据权利要求 21或 22所述的核心网控制实体,其特征在于, 所述第二指示信息中还包含所述服务器的地址信息。
25. 根据权利要求 19至 24中任一项所述的核心网控制实体, 其 特征在于, 所述核心网控制实体还包括:
第二确定单元, 用于当所述用户设备为时间受控的用户设备时, 确定所述用户设备是否处于允许通信时间范围内;
所述第一确定单元具体用于:
当所述第二确定单元确定所述用户设备处于允许通信时间范围 内时, 确定是否设置有所述第一指示信息。
26. 根据权利要求 19至 25中任一项所述的核心网控制实体, 其 特征在于, 所述核心网控制实体还包括:
第一接收单元,用于接收所述用户设备归属的归属签约服务器或 归属位置寄存器在接收到第一用户设备可达通知请求消息后发送的 第二用户设备可达通知请求消息, 以及第一设置单元, 用于根据所述 第一接收单元接收的所述第二用户设备可达通知请求消息,设置所述 第一指示信息; 或包括:
第二接收单元,用于接收所述缓存有所述下行数据的服务器发送 的数据缓存指示信息,所述数据缓存指示信息表明服务器缓存有要发 送到所述用户设备的下行数据, 以及第二设置单元, 用于根据所述数 据缓存指示信息, 设置所述第一指示信息。
27. 根据权利要求 19至 25中任一项所述的核心网控制实体, 其 特征在于, 所述核心网控制实体还包括:
第三接收单元,用于接收为所述用户设备服务的源核心网控制实 体发送的上下文响应消息;
第三设置单元,用于在所述第三接收单元接收的所述上下文响应 消息中包含所述第一指示信息时, 设置所述第一指示信息。
28. 根据权利 19至 27中任一项所述的核心网控制实体, 其特征 在于, 所述核心网控制实体还包括:
第一删除单元, 用于在根据所述第一指示信息, 确定所述下行数 据的有效期到期时, 删除所述第一指示信息, 其中, 所述第一指示信 息还用于指示所述下行数据的有效期, 其中, 所述第一指示信息指示 的所述下行数据的有效期是根据缓存所述下行数据的服务器发送的 数据缓存指示信息携带的所述下行数据的有效期设置的; 或包括: 第四接收单元,用于接收所述缓存有所述下行数据的服务器在所 述下行数据的有效期到期后发送的第四消息,所述第四消息用于指示 将所述第一指示信息删除, 以及第二删除单元, 用于根据所述第五接 收单元接收的所述第四消息, 删除所述第一指示信息; 或包括
第五接收单元,用于接收所述用户设备归属的归属签约服务器或 归属位置寄存器发送的第一用户设备可达通知取消消息,以及第三删 除单元,用于根据所述第五接收单元接收的所述第一用户设备可达通 知取消消息, 删除所述第一指示信息。
29. 根据权利要求 28所述的核心网控制实体, 其特征在于, 所述第 五接收单元具体用于:
接收所述归属签约服务器或所述归属位置寄存器在根据所述缓 存有所述用户设备的下行数据的服务器发送的第二用户设备可达通 知取消消息后发送的所述第一用户设备可达通知取消消息;
或具体用于:
接收所述归属签约服务器或所述归属位置服务器在根据第一用 户设备可达通知请求消息确定所述下行数据到期后发送的所述第一 用户设备可达通知取消消息, 其中, 所述第一用户设备可达通知请求 消息携带所述下行数据的有效期。
30. 根据权利要求 21或 22所述的核心网控制实体, 还包括建立 单元:
用于在接收到所述缓存有所述下行数据的服务器发送的下行数 据通知消息或下行数据后,建立传输相应数据包的承载对应的演进的 通用陆基无线接入网无线接入承载或建立传输相应数据包的分组数 据协议上下文对应的无线接入承载; 或者, 用于建立用户面承载或分组数据协议上下文。
31. 一种用户设备, 其特征在于, 包括:
发送单元, 用于向核心网控制实体发送第一消息;
省电单元,用于在接收到所述核心网实体根据所述第一消息发送 的包含有第三指示信息的第三消息时,关闭接收器或进入省电模式或 关机, 其中, 所述第三指示信息表明服务器没有要发送到用户设备的 下行数据。
32. 根据权利要求 31所述的用户设备, 其特征在于, 所述用户 设备还包括:
保持单元,用于在接收到所述核心网控制实体根据所述第一消息 发送的包含有第二指示信息的第二消息时, 保持已建立的信令连接, 以等待接收所述下行数据,其中所述第二指示信息表明服务器有要下 行数据要发送至所述用户设备。
33. 根据权利要求 31或 32所述的用户设备, 其特征在于, 在所 述用户设备包括保持单元时, 所述用户设备还包括:
确定单元, 用于在当前接入网络为通用分组无线服务技术网络 时, 确定是否有分组数据协议上下文保留;
发起单元, 用于在没有任何分组数据协议上下文保留时, 发起分 组数据协议上下文的过程以建立分组数据协议上下文。
34. 一种服务器, 其特征在于, 包括第一发送单元, 第一接收单 元和第二发送单元;
所述第一发送单元,用于向用户设备归属的归属签约服务器或归 属位置寄存器发送第一用户设备可达通知请求消息,以便于所述归属 签约服务器或所述归属位置寄存器向所述用户设备归属的核心网控 制实体发送第二用户设备可达通知请求消息,从而所述核心网控制实 体根据所述第二用户设备可达通知请求消息设置第一指示信息,所述 第一指示信息表明服务器中缓存有要发送至所述用户设备的下行数 据, 以及所述第一接收单元, 用于接收所述归属签约服务器或所述归 属位置寄存器在接收到所述核心网控制实体根据所述第一指示信息 发送的第一用户设备可达通知消息后的发送的第二用户设备可达通 知消息, 以及所述第二发送单元, 用于向所述用户设备发送所述下行 数据; 或
所述第一发送单元,用于向用户设备归属的核心网控制实体发送 数据缓存指示信息,以便于所述核心网控制实体根据所述数据缓存指 示信息设置第一指示信息, 其中, 所述数据缓存指示信息表明服务器 缓存有要发送至所述用户设备的下行数据,且所述第一指示信息表明 服务器中缓存有要发送至所述用户设备的下行数据,以及所述第一接 收单元,用于接收所述核心网控制实体根据所述第一指示信息发送的 下行数据下发请求消息, 以及所述第二发送单元, 用于向所述用户设 备发送所述下行数据。
35. 根据权利要求 34所述的服务器, 其特征在于, 所述服务器 还包括: 第三发送单元, 用于在确定所述下行数据到期时, 向所述归 属签约服务器或所述归属位置寄存器发送第二用户设备可达通知取 消消息, 以使得所述归属签约服务器或所述归属位置寄存器向所述核 心网控制实体发送第一用户设备可达通知取消消息, 从而, 所述核心 网控制实体根据所述第一用户设备可达通知取消消息,删除所述第一 指示信息; 或者
所述第一用户设备可达通知请求消息还包括所述下行数据的有 效期,以便所述归属签约服务器在根据所述第一用户设备可达通知请 求消息确定所述下行数据的有效期到期时,向所述核心网控制实体发 送第一用户设备可达通知取消消息, 从而, 所述核心网控制实体根据 所述第一用户设备可达通知取消消息, 删除所述第一指示信息。
36. 根据权利要求 34所述的服务器, 其特征在于, 所述服务器 还包括: 第四发送单元, 用于在确定所述下行数据的有效期到期时, 向所述核心网控制实体发送第四消息,所述第四消息用于指示所述核 心网控制实体将所述第一指示信息删除; 或者
所述数据缓存指示信息还包括所述下行数据的有效期, 以便于所 述核心网控制实体设置还用于指示所述下行数据的有效期的所述第 一指示信息, 并在所述下行数据的有效期到期时, 删除所述第一指示
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