CN106961653B - Method, device and system for realizing data transmission - Google Patents

Method, device and system for realizing data transmission Download PDF

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Publication number
CN106961653B
CN106961653B CN201610017536.3A CN201610017536A CN106961653B CN 106961653 B CN106961653 B CN 106961653B CN 201610017536 A CN201610017536 A CN 201610017536A CN 106961653 B CN106961653 B CN 106961653B
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data transmission
mtc
mme
transmission mode
base station
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CN106961653A (en
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黄梅青
戴谦
陆婷
余媛芳
高音
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2017/070295 priority patent/WO2017121281A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

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

Abstract

The invention discloses a method, a device and a system for realizing data transmission, comprising the following steps: the method comprises the steps that a mobility management unit MME judges that machine type communication MTC user equipment UE needs to switch a data transmission mode, and sends information representing the data transmission mode to the MTC UE; and the MME and the MTC UE carry out data transmission mode switching. By the scheme of the invention, when the MME judges that the MTC UE needs to switch the data transmission mode, the MME sends information indicating the data transmission mode switching to the MTC UE so as to realize the data transmission mode switching, thereby improving the flexibility of data transmission.

Description

Method, device and system for realizing data transmission
Technical Field
The present invention relates to Machine Type Communication (MTC) technologies, and in particular, to a method, an apparatus, and a system for implementing data transmission.
Background
With the rapid development of wireless communication technology and the increasing demand of people for communication, the 5G era is coming. The important role of 5G is MTC, which has a large-scale potential application prospect, and has gained wide attention from a large number of mobile network operators, equipment manufacturers, and research institutions. The main application fields of the MTC include smart power grids, smart transportation, smart home, remote measurement, wireless sensor networks and the like. Is an important component of emerging internet of things.
Services supported by MTC User Equipment (UE) are diverse. Most MTC UEs require low cost and low power consumption, such as a large number of sensors for environmental monitoring or agriculture, etc. The traffic supported by MTC UEs is typically low-rate, but there may also be situations where large data needs to be transmitted. The service supported by the MTC UE generally has low requirements on delay, but there may be a case where an emergency event needs to be transmitted quickly.
For example, the services of a fire alarm device include the following:
periodically reporting the keep-alive information, wherein the requirement on time delay is low, and the data volume is as small as dozens of bits (Byte) or less;
the fire alarm information is reported, the requirement on time delay is high, the data size may be as small as dozens of bytes, but may also be as large as several megabytes (M), because video information may need to be reported under certain conditions;
the software version is updated, the requirement on time delay is low, the data volume is large, and a plurality of M data can exist.
Therefore, the services supported by the MTC UE are various, including various services such as periodic service reporting, abnormal event reporting, network command issuing, and software version updating. The Quality of Service (QoS) required by different services for a network is also different. In addition, MTC UEs may transmit high-rate data, for example, in portable applications, smart glasses may need to transmit real-time video data; the smart watch may need to make a call, which requires a high QoS.
The number of MTC UEs may also be massive, and access of a large number of MTC UEs may bring a large amount of signaling overhead to the network. In order to effectively reduce the cost of MTC UEs and also to save the signaling overhead of MME, the third Generation Partnership Project (3 GPP) proposes a method for implementing data transmission, which substantially includes:
the MTC UE sends an Attach (Attach) request to the MME; wherein, the Attach request comprises a data transmission mode supported by the MTC UE; the MME selects one data transmission mode in the Attach request, stores information related to the selected data transmission mode and sends an Attach response to the MTC UE; wherein the Attach response includes the selected data transmission mode; the MTC UE stores the information related to the selected data transmission mode in the Attach response; and when the MTC UE or the MME needs to transmit data, the data is transmitted by adopting the selected data transmission mode.
The data transmission mode includes a control plane mode or a user plane mode.
The control plane mode is to pack a Data packet into a Non-Access Stratum (NAS) Protocol Data Unit (PDU) and transmit the PDU in control plane signaling. The control plane mode has the advantages of saving signaling, network overhead and power consumption of MTC UE; the disadvantage is that the security performance is slightly poor, because no Data Radio Bearer (DRB) is established in the control plane mode, and accordingly, neither MME nor UE has an Access Stratum (AS) security context, and therefore, the AS layer encryption cannot be performed on the Data packet; the length of NAS PDU is limited, the NAS PDU needs to be divided into a plurality of small data packets for transmission, network signals of MTC UE are generally poor, packet loss is easy to occur, a receiving party is difficult to receive complete data packets, a control plane mode adopts control plane signaling to transmit data, and excessive packets bring about transmission of excessive control plane signaling and occupy excessive resources; the low-priority data service occupies too high scheduling resources, because the priority of the periodically reported data sent by the MTC UE is lower, but because the data is sent in the signaling attached to the air interface layer 3, the scheduling priority processing which is the same as that of the signaling of the conventional Radio Resource Control protocol (RRC) is obtained, so that the scheduling priority of the real RRC signaling is occupied, and a higher air interface access failure may be caused; when the MTC UE supports Data use control plane optimization and Data Radio Bearer (DRB) transmission, since the total scheduling priority of the Signaling Radio Bearers (SRBs) is higher than that of the DRBs, the low priority Data may always obtain higher scheduling priority processing than the DRBs, which may result in that scheduling of a high priority service transmitted by using the DRBs cannot be guaranteed.
The user plane mode refers to that DRB is used for transmitting data, after data transmission is finished, the MTC UE and the MME respectively store a bearer information context, an Access Stratum (AS) security context and the like, and when data is transmitted again subsequently, the MTC UE and the MME recover the use of DRB bearer through a suspension-activation process. The user plane mode has the advantage of better encryption performance, because the MTC UE and the MME store the AS security context, the MTC UE and the MME can encrypt the data in the AS layer; data with high requirements on the rate or large data can be transmitted. The disadvantage is poor signaling optimization effect, because the context of the bearer information needs to be replied first and then the data is transmitted; the overhead of maintaining the context of the bearer information is high, and the risk that the context of the bearer information stored between the MTC UE and the MME is different exists, because the MTC UE generally has long service time and the MME is consistently in change; when the MTC UE changes the access cell, the bearer information context and the AS security context need to be migrated, and the overhead is high.
In the existing method for realizing data transmission, after a data transmission mode is determined, the data transmission mode is not changed any more, and the requirements of data to be transmitted by the MTC UE are different, so that the flexibility of data transmission is low.
Disclosure of Invention
In order to solve the above problems, the present invention provides a method, an apparatus, and a system for implementing data transmission, which can improve the flexibility of data transmission.
In order to achieve the above object, the present invention provides a method for implementing data transmission, including:
the method comprises the steps that a mobility management unit MME judges that machine type communication MTC user equipment UE needs to switch a data transmission mode, and sends information representing the data transmission mode to the MTC UE;
and the MME and the MTC UE carry out data transmission mode switching.
Optionally, the determining, by the MME, that the MTC UE needs to switch the data transmission mode includes:
the MME judges that the MTC UE needs to switch the data transmission mode according to any one or more of the following data transmission modes and the current data transmission mode: the service type of the sending data, the load of the current network, the reason for receiving the radio resource control RRC from the MTC UE, the data information sent by the MME, and the received indication information from the base station.
Optionally, the sending, by the MME, information indicating switching of a data transmission mode to the MTC UE includes:
the MME sends the information representing the switching data transmission mode to the MTC UE through a non-access stratum (NAS) downlink message;
or, the MME sends the information indicating the switching data transmission manner to the base station, and the base station sends the information indicating the switching data transmission manner to the MTC UE.
Optionally, the MME sends the information indicating the switching data transmission mode to the base station through an S1 interface message, and the base station sends the information indicating the switching data transmission mode to the MTC UE through an air interface message.
Optionally, the S1 interface message is a UE text release message or an S1 interface paging message.
Optionally, the air interface message is an air interface paging message or an air interface RRC downlink message.
Optionally, the information indicating switching of the data transmission scheme is information indicating whether to perform switching of the data transmission scheme, or information indicating switching to a user plane scheme or a control plane scheme.
Optionally, the switching of the data transmission mode between the MME and the MTC UE includes:
the MME receives a detach request sent by the MTC UE through the base station, sends a detach response to the MTC UE through the base station, and deletes information related to the current data transmission mode;
and the MME receives an Attach request sent by the MTC UE through the base station, selects a switched data transmission mode, sends an Attach response to the MTC UE through the base station, and stores data related to the switched data transmission mode.
The invention also provides a method for realizing data transmission, which comprises the following steps:
and the MTC user equipment UE receives the information which is from the MME and indicates the switching of the data transmission mode, and switches the data transmission mode with the MME.
Optionally, the receiving, by the MTC UE, information indicating switching of a data transmission manner from an MME includes:
the MTC UE receives information which is sent by a non-access stratum NAS downlink message from the MME and represents a switching data transmission mode;
or the MTC UE receives information which is sent by the MME through a base station and represents a switching data transmission mode.
Alternatively, the information indicating switching of the data transmission scheme may be information indicating whether or not to switch the data transmission scheme, or information indicating switching to a user plane scheme or a control plane scheme.
Optionally, the switching of the data transmission mode with the MME includes:
the MTC UE sends a detach request to the MME through a base station;
the MTC UE receives a Dettach response sent by the MME through a base station, and sends an Attach request to the MME through the base station; when the MTC UE sends the Dettach request to the MME through the base station, or when the MTC UE receives a Dettach response sent by the MME through the base station, deleting the stored information related to the current data transmission mode;
and the MTC UE receives an Attach response sent by the MME through a base station and stores information related to the switched data transmission mode in the Attach response.
The invention also provides a mobility management unit MME, at least comprising:
the judging module is used for judging that Machine Type Communication (MTC) User Equipment (UE) needs to switch a data transmission mode and sending a first notification message to the processing module;
and the first processing module is used for receiving the first notification message, sending information indicating switching of the data transmission mode to a base station or the MTC UE, and switching the data transmission mode with the MTC UE.
Optionally, the determining module is specifically configured to:
judging that the MTC UE needs to switch the data transmission mode according to any one or more of the following data transmission modes and the current data transmission mode: sending the service type of data, the load of the current network, the reason for receiving the radio resource control RRC from the MTC UE, the data information sent by the MME, and the indication information received from the base station, and sending the first notification message to the processing module.
Optionally, the first processing module is specifically configured to:
receiving the first notification message, and sending information indicating switching of data transmission modes to the base station or the MTC UE;
receiving a detach request from the base station, sending a detach response to the base station, and deleting information related to the current data transmission mode; and receiving an Attach request from the base station, selecting a switched data transmission mode, sending an Attach response to the base station, and storing data related to the switched data transmission mode.
Optionally, the first processing module is specifically configured to:
and receiving the first notification message, sending information representing switching of data transmission modes to the base station through an S1 interface message or sending the information representing switching of data transmission modes to the MTC UE through a non-access stratum (NAS) downlink message, and switching the data transmission modes with the MTC UE.
The invention also provides a machine type communication MTC user equipment UE, which at least comprises:
the acquisition module is used for receiving the information which is from the MME and indicates the switching of the data transmission mode and sending a second notification message to the second processing module;
and the second processing module is used for receiving the second notification message and switching the data transmission mode with the MME.
Optionally, the obtaining module is specifically configured to:
and receiving information indicating a switching data transmission mode sent by a non-access stratum (NAS) downlink message from the MME or receiving information indicating a switching data transmission mode sent by the MME through a base station, and sending the second notification message to the second processing module.
Optionally, the second processing module is specifically configured to:
receiving the second notification message, and sending a detach request to the MME through a base station; receiving a Dettach response sent by the MME through a base station, and sending an Attach request to the MME through the base station; when the Dettach request is sent to the MME through the base station or a Dettach response sent by the MME through the base station is received, deleting the stored information related to the current data transmission mode; and receiving an Attach response sent by the MME through a base station, and storing information related to the switched data transmission mode in the Attach response.
The invention also provides a system for realizing data transmission, which at least comprises:
the mobility management unit MME is used for judging that machine type communication MTC user equipment UE needs to switch a data transmission mode and sending information representing the data transmission mode to the MTC UE; switching data transmission modes with MTC UE;
and the MTC UE is used for receiving the information which is sent by the MME and indicates the switching of the data transmission mode, and switching the data transmission mode with the MME.
Optionally, the MME is specifically configured to:
judging that the MTC UE needs to switch the data transmission mode according to any one or more of the following data transmission modes and the current data transmission mode: sending the service type of the data, the load of the current network, the received Radio Resource Control (RRC) access reason from the MTC UE, the data information issued by the MME, the received indication information from the base station, and sending information representing switching of data transmission modes to the MTC UE.
Optionally, the MME is specifically configured to:
judging that the MTC UE needs to switch the data transmission mode, and sending information representing the data transmission mode to the MTC UE through non-access stratum (NAS) downlink information; and switching the data transmission mode with the MTC UE.
Optionally, the MME is specifically configured to:
judging that the MTC UE needs to switch the data transmission mode, and sending information representing the data transmission mode to a base station; switching data transmission modes with MTC UE;
further comprising:
and the base station is used for receiving the information which represents the switching data transmission mode from the MME and sending the information which represents the switching data transmission mode to the MTC UE.
Optionally, the MME is specifically configured to:
judging that the MTC UE needs to switch the data transmission mode, and sending information representing the data transmission mode to a base station through an S1 interface message; switching data transmission modes with MTC UE;
the base station is specifically configured to:
and receiving information indicating a switching data transmission mode from the MME, and sending the information indicating the switching data transmission mode to the MTC UE through an air interface message.
Optionally, the MME is specifically configured to:
judging that the MTC UE needs to switch the data transmission mode, and sending information representing the data transmission mode switching to the MTC UE; receiving a detach request from a base station, sending a detach response to the base station, and deleting information related to the current data transmission mode; receiving an Attach request from the base station, selecting a switched data transmission mode, sending an Attach response to the base station, and storing data related to the switched data transmission mode;
further comprising:
the base station is used for receiving a Dettach request from the MTC UE and sending the Dettach request to the MME; receiving a Dettach response from the MME, and sending the Dettach response to the MTC UE; receiving an Attach request from the MTC UE, and sending the Attach request to the MME; receiving an Attach response from the MME, and sending the Attach response to the MTC UE;
the MTC UE is specifically configured to:
receiving information which is from the MME and indicates a data transmission mode switching, and sending a Dettach request to the base station; receiving a Dettach response from the base station, and sending an Attach request to the base station; when the Dettach request is sent to the MME through the base station or a Dettach response sent by the MME through the base station is received, deleting the stored information related to the current data transmission mode; and receiving an Attach response from the base station, and storing information related to the switched data transmission mode in the Attach response.
Compared with the prior art, the technical scheme of the invention comprises the following steps: the MME judges that the MTC UE needs to switch the data transmission mode, and sends information indicating the data transmission mode to the MTC UE; and the MME and the MTC UE carry out data transmission mode switching. By the scheme of the invention, when the MME judges that the MTC UE needs to switch the data transmission mode, the MME sends information indicating the data transmission mode switching to the MTC UE so as to realize the data transmission mode switching, thereby improving the flexibility of data transmission.
Drawings
The accompanying drawings in the embodiments of the present invention are described below, and the drawings in the embodiments are provided for further understanding of the present invention, and together with the description serve to explain the present invention without limiting the scope of the present invention.
FIG. 1 is a flow chart of a method for implementing data transmission according to the present invention;
FIG. 2 is a flowchart illustrating a method for implementing data transmission according to a first embodiment of the present invention;
FIG. 3 is a flowchart illustrating a method for implementing data transmission according to a second embodiment of the present invention;
FIG. 4 is a flowchart illustrating a method for implementing data transmission according to a third embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an MME according to the present invention;
FIG. 6 is a schematic structural diagram of an MTC UE according to the present invention;
fig. 7 is a schematic structural diagram of a system for implementing data transmission according to the present invention.
Detailed Description
The following further description of the present invention, in order to facilitate understanding of those skilled in the art, is provided in conjunction with the accompanying drawings and is not intended to limit the scope of the present invention. In the present application, the embodiments and various aspects of the embodiments may be combined with each other without conflict.
Referring to fig. 1, the present invention provides a method for implementing data transmission, including:
step 100, the MME judges that the MTC UE needs to switch the data transmission mode, and sends information indicating the data transmission mode to the MTC UE.
The method for judging that the MTC UE needs to switch the data transmission mode includes the following steps:
the MME judges that the MTC UE needs to switch the data transmission mode according to any one or more of the following data transmission modes and the current data transmission mode: the service type of the transmitted data, the load of the current network, the RRC access reason received from the MTC UE, data information issued by the MME, the received indication information from the base station and the like.
The traffic type of the transmitted data may be a traffic type transmitted by the MTC UE, the MME, or the base station.
The data information sent by the MME may be a data size sent by the MME, or a data type sent by the MME.
The indication information may be load information or the like.
The MTC UE generally includes an RRC access reason in sending an RRC access request to the MME.
The MME may determine which data transmission method to use to transmit data in various different manners. For example, when the MME determines that the type of data transmission service of the MTC UE is a big data service, or a service with a high requirement for encryption, or a current network has a heavy load, or the amount of data issued by the MME is large, and the current data transmission mode is a control plane mode, it determines that the MTC UE needs to switch the data transmission mode.
For another example, when the MME determines that the service type of data sent by the MTC UE is a high-priority service, or a traditional LTE service transmission mode, or the received RRC access reason is emergency access, or the data amount issued by the MME is small, and the current data transmission mode is a user plane mode, it determines that the MTC UE needs to switch the data transmission mode.
The sending, by the MME, information indicating switching of a data transmission mode to the MTC UE includes:
the MME sends information indicating a switching data transmission mode to the MTC UE through the NAS downlink message;
or, the MME sends information indicating switching of the data transmission mode to the base station, and the base station sends information indicating switching of the data transmission mode to the MTC UE.
The NAS downlink message is generally carried in the S1 downlink NAS transport message and sent.
The MME sends information indicating a switching data transmission mode to the base station through an S1 interface message, and the base station sends the information indicating the switching data transmission mode to the MTC UE through an air interface message.
Wherein, the S1 interface message is a UE text release message or an S1 interface paging message.
The air interface message is either an air interface paging message or an air interface Radio Resource Control (RRC) downlink message.
The RRC downlink message may be an RRC Connection Release (RRC Connection Release) message, an RRC Suspend (RRC Suspend) message, an RRC Connection Reconfiguration Complete (RRC Connection Reconfiguration Complete) message, an RRC Connection Setup Complete (RRC Connection Setup Complete) message, or the like.
In this step, the information indicating switching of the data transmission scheme is information indicating whether or not to switch the data transmission scheme, or information indicating switching to a user plane scheme, a control plane scheme, or a conventional Long Term Evolution (LTE) service transmission scheme.
The information indicating whether to switch the data transmission mode or not, or the information indicating switching to the user plane mode or the control plane mode or the conventional LTE service transmission mode may be represented by a numeric value as a letter. For example, information indicating that the data transmission scheme is switched is 0, information indicating that the data transmission scheme is not switched is 1, information indicating that the data transmission scheme is switched to the user plane scheme is 1, and information indicating that the data transmission scheme is switched to the control plane scheme is 2.
Step 101, the MTC UE receives information indicating switching of data transmission modes from the MME and performs data transmission mode switching with the MME.
In this step, the switching of the data transmission mode between the MME and the MTC UE includes:
the MTC UE sends a detach request to the MME through the base station; the MME receives a Dettach request sent by the MTC UE through the base station, sends a Dettach response to the MTC UE through the base station, and deletes information related to the current data transmission mode; the MTC UE receives a Dettach response sent by the MME through the base station, and sends an Attach request to the MME through the base station; when the MTC UE sends a Dettach request to the MME through the base station, or when the MTC UE receives a Dettach response sent by the MME through the base station, deleting the stored information related to the current data transmission mode; the MME receives an Attach request sent by MTC UE through a base station, selects a switched data transmission mode, sends an Attach response to the MTC UE through the base station, and stores data related to the switched data transmission mode; the MTC UE receives the Attach response sent by the MME through the base station, and stores the information related to the switched data transmission mode in the Attach response.
When the current data transmission mode is a control plane mode, the information related to the current data transmission mode comprises NAS encryption information and the like; when the current Data transmission mode is the user plane mode, the information related to the current Data transmission mode includes S1 Bearer information, Data Radio Bearer (DRB) Bearer information, AS encryption information, and the like.
The Attach request includes a data transmission mode supported by the MTC UE, including a user plane mode and a control plane mode.
Wherein the Attach response includes the switched data transmission mode.
After receiving the Attach response from the MME, the MTC UE sends uplink data to the MME in a switched data transmission mode in the Attach response.
By the scheme of the invention, when the MME judges that the MTC UE needs to switch the data transmission mode, the MME sends information indicating the data transmission mode switching to the MTC UE so as to realize the data transmission mode switching, thereby improving the flexibility of data transmission.
The process of the present invention is illustrated in detail by the following specific examples.
For example, a fire-alarm MTC device supports the following four services:
1. and reporting the keep-alive information periodically, wherein the keep-alive information has no requirement on time delay, the data size is 0-20 Byte, and the reporting period is 10 minutes.
2. And reporting the information by fire alarm, wherein the time delay is required to be less than or equal to 10 seconds(s), and the size of the reported video information is 5M.
3. And the fire alarm control room issues a command to the fire alarm MTC equipment, the time delay is required to be less than or equal to 10s, and the data size is 0-20 Byte.
4. The software version is updated, no requirement is made on time delay, and the data size is 2000 Byte.
In a first embodiment, referring to fig. 2, the method comprises:
step 200, the fire alarm MTC device sends an Attach request to the MME through the base station.
In this step, the Attach request includes a data transmission mode (including a user plane mode and a control plane mode) supported by the fire-alarm MTC device.
Step 201, the MME selects a control plane mode, and sends an Attach response to the fire-alarm MTC device through the base station.
In this step, the Attach response includes a control plane mode.
Step 202, the fire alarm MTC device receives the Attach response, and interacts with the MME to store information related to the control plane mode in the Attach response.
Step 203, the MME receives an RRC access request from the fire MTC device, determines that the RRC access reason in the RRC access request is to transmit big data, and sends information indicating switching of a data transmission mode to the MTC UE through an NAS downlink message.
And step 204, the fire alarm MTC equipment sends a Dettach request to the MME through the base station.
Step 205, the MME sends a Dettach response to the fire alarm MTC device through the base station, and deletes information related to the control plane mode.
And step 206, the fire alarm MTC equipment receives the Dettach response and deletes the information related to the control plane mode.
And step 207, the fire alarm MTC device sends an Attach request to the MME through the base station.
And step 208, the MME selects a user plane mode and sends an Attach response to the fire alarm MTC equipment through the base station.
And step 209, the fire alarm MTC device receives the Attach response, and interacts with the MME to store the information related to the user plane mode in the Attach response.
In a second embodiment, referring to fig. 3, the method comprises:
and step 300, the fire alarm MTC equipment sends an Attach request to the MME through the base station.
In this step, the Attach request includes a data transmission mode (including a user plane mode and a control plane mode) supported by the fire-alarm MTC device.
Step 301, the MME selects a user plane mode, and sends an Attach response to the fire-alarm MTC device through the base station.
In this step, the Attach response includes a user plane mode.
Step 302, the fire alarm MTC device receives the Attach response, and interacts with the MME to store information related to the user plane mode in the Attach response.
Step 303, the MME receives an RRC access request from the fire MTC device, determines that the RRC access cause in the RRC access request is emergency access, sends information indicating switching of the data transmission mode to the base station through an S1 interface message, and the base station sends information indicating switching of the data transmission mode to the MTC UE through an air interface message.
And step 304, the fire alarm MTC equipment sends a Dettach request to the MME through the base station, and deletes information related to the user plane mode.
And 305, deleting information related to the control plane mode by the MME, and sending a Dettach response to the fire alarm MTC equipment through the base station.
Step 306, the fire alarm MTC device sends an Attach request to the MME through the base station.
And 307, the MME selects a control plane mode and sends Attach response to the fire alarm MTC equipment through the base station.
And 308, the fire alarm MTC device receives the Attach response, and interacts with the MME to store information related to the control plane mode in the Attach response.
A third embodiment, see fig. 4, the method comprises:
step 400, the fire alarm MTC device sends an Attach request to the MME through the base station.
In this step, the Attach request includes a data transmission mode (including a user plane mode and a control plane mode) supported by the fire-alarm MTC device.
Step 401, the MME selects a control plane mode, and sends an Attach response to the fire alarm MTC device through the base station.
In this step, the Attach response includes a control plane mode.
Step 402, the fire alarm MTC device receives the Attach response, and interacts with the MME to store information related to the control plane mode in the Attach response.
Step 403, the MME needs to send the latest software version to the fire-alarm MTC device, determines that the type of the data-sending service is a big data service, sends information indicating a data transmission mode to be switched to the base station through the paging message, and the base station sends information indicating a data transmission mode to be switched to the MTC UE through the paging message.
And step 404, the fire alarm MTC equipment sends a Dettach request to the MME through the base station.
Step 405, the MME sends a Dettach response to the fire alarm MTC device through the base station, and deletes information related to the control plane mode.
And step 406, the fire alarm MTC device receives a Dettach response from the MME through the base station, and deletes information related to the control plane mode.
Step 407, the fire alarm MTC device sends an Attach request to the MME through the base station.
And step 408, the MME selects a user plane mode and sends an Attach response to the fire alarm MTC equipment through the base station.
Step 409, the fire alarm MTC device receives the Attach response, and interacts with the MME to store information related to the user plane mode in the Attach response.
Referring to fig. 5, the present invention provides an MME, at least including:
the judging module is used for judging that Machine Type Communication (MTC) User Equipment (UE) needs to switch a data transmission mode and sending a first notification message to the processing module;
and the first processing module is used for receiving the first notification message, sending information indicating switching of the data transmission mode to the base station or the MTC UE, and switching the data transmission mode with the MTC UE.
In the MME of the present invention, the determining module is specifically configured to:
judging that the MTC UE needs to switch the data transmission mode according to any one or more of the following data transmission modes and the current data transmission mode: the method comprises the steps of sending a service type of data, a load of a current network, a Radio Resource Control (RRC) access reason received from MTC UE, data information sent by MME, and indication information received from a base station, and sending a first notification message to a processing module.
In the MME of the present invention, the first processing module is specifically configured to:
receiving a first notification message, and sending information representing switching of a data transmission mode to a base station or MTC UE;
receiving a detach request from a base station, sending a detach response to the base station, and deleting information related to the current data transmission mode; and receiving an Attach request from the base station, selecting the switched data transmission mode, sending an Attach response to the base station, and storing data related to the switched data transmission mode.
In the MME of the present invention, the first processing module is specifically configured to:
and receiving the first notification message, sending information representing switching of the data transmission mode to the base station through an S1 interface message or sending information representing switching of the data transmission mode to the MTC UE through an NAS downlink message, and switching the data transmission mode with the MTC UE.
Referring to fig. 6, the present invention further provides an MTC UE, which at least includes:
the acquisition module is used for receiving the information which is from the MME and indicates the switching of the data transmission mode and sending a second notification message to the second processing module;
and the second processing module is used for receiving the second notification message and switching the data transmission mode with the MME.
In the MTC UE of the present invention, the obtaining module is specifically configured to:
and sending a second notification message to the second processing module after receiving the information which is sent by the NAS downlink message and represents the switching data transmission mode from the MME or receiving the information which represents the switching data transmission mode from the MME through the base station.
In the MTC UE of the present invention, the second processing module is specifically configured to:
receiving a second notification message, and sending a detach request to the MME through the base station; receiving a Dettach response sent by the MME through the base station, and sending an Attach request to the MME through the base station; when a Dettach request is sent to the MME through the base station or a Dettach response sent by the MME through the base station is received, deleting the stored information related to the current data transmission mode; and receiving an Attach response sent by the MME through the base station, and storing information related to the switched data transmission mode in the Attach response.
Referring to fig. 7, the present invention further provides a system for implementing data transmission, which at least includes:
the MME is used for judging that machine type communication MTC User Equipment (UE) needs to switch the data transmission mode and sending information representing the data transmission mode to the MTC UE; switching data transmission modes with MTC UE;
and the MTC UE is used for receiving the information which is sent by the MME and indicates the switching of the data transmission mode, and switching the data transmission mode with the MME.
In the system of the present invention, the MME is specifically configured to:
judging that the MTC UE needs to switch the data transmission mode according to any one or more of the following data transmission modes and the current data transmission mode: sending the service type of the data, the load of the current network, the received Radio Resource Control (RRC) access reason from the MTC UE, the data information issued by the MME, the received indication information from the base station, and sending information representing switching of data transmission modes to the MTC UE.
In the system of the present invention, the MME is specifically configured to:
judging that the MTC UE needs to switch the data transmission mode, and sending information representing the data transmission mode to the MTC UE through the non-access stratum NAS downlink message; and switching the data transmission mode with the MTC UE.
In the system of the present invention, the MME is specifically configured to:
judging that the MTC UE needs to switch the data transmission mode, and sending information representing the data transmission mode to the base station; switching data transmission modes with MTC UE;
further comprising:
and the base station is used for receiving the information which indicates the switching of the data transmission mode from the MME and sending the information which indicates the switching of the data transmission mode to the MTC UE.
In the system of the present invention, the MME is specifically configured to:
judging that the MTC UE needs to switch the data transmission mode, and sending information representing the data transmission mode to the base station through an S1 interface message; switching data transmission modes with MTC UE;
the base station is specifically configured to:
and receiving the information which represents the switching of the data transmission mode from the MME, and sending the information which represents the switching of the data transmission mode to the MTC UE through an air interface message.
In the system of the present invention, the MME is specifically configured to:
judging that the MTC UE needs to switch the data transmission mode, and sending information representing the data transmission mode to the MTC UE; receiving a detach request from a base station, sending a detach response to the base station, and deleting information related to the current data transmission mode; receiving an Attach request from a base station, selecting a switched data transmission mode, sending an Attach response to the base station, and storing data related to the switched data transmission mode;
further comprising:
the base station is used for receiving a Dettach request from the MTC UE and sending the Dettach request to the MME; receiving a Dettach response from the MME, and sending the Dettach response to the MTC UE; receiving an Attach request from MTC UE, and sending the Attach request to MME; receiving an Attach response from the MME, and sending the Attach response to the MTC UE;
MTC UEs are specifically configured to:
receiving information which is from an MME and indicates a data transmission mode to be switched, and sending a Dettach request to a base station; receiving a Dettach response from the base station, and sending an Attach request to the base station; when a Dettach request is sent to the MME through the base station or a Dettach response sent by the MME through the base station is received, deleting the stored information related to the current data transmission mode; and receiving an Attach response from the base station, and storing information related to the switched data transmission mode in the Attach response.
It should be noted that the above-mentioned embodiments are only for facilitating the understanding of those skilled in the art, and are not intended to limit the scope of the present invention, and any obvious substitutions, modifications, etc. made by those skilled in the art without departing from the inventive concept of the present invention are within the scope of the present invention.

Claims (20)

1. A method for implementing data transmission, comprising:
the method comprises the steps that a mobility management unit MME judges that machine type communication MTC user equipment UE needs to switch a data transmission mode, and sends information representing the data transmission mode to the MTC UE;
the MME and the MTC UE carry out data transmission mode switching;
the switching of the data transmission mode between the MME and the MTC UE comprises the following steps:
the MME receives a detach request sent by the MTC UE through a base station, sends a detach response to the MTC UE through the base station, and deletes information related to a current data transmission mode;
and the MME receives an Attach request sent by the MTC UE through a base station, selects a switched data transmission mode, sends an Attach response to the MTC UE through the base station, and stores data related to the switched data transmission mode.
2. The method of claim 1, wherein the MME determining that the MTC UE needs to switch the data transmission mode comprises:
the MME judges that the MTC UE needs to switch the data transmission mode according to any one or more of the following data transmission modes and the current data transmission mode: the service type of the sending data, the load of the current network, the reason for receiving the radio resource control RRC from the MTC UE, the data information sent by the MME, and the received indication information from the base station.
3. The method of claim 1, wherein the MME sending information indicating switching of data transmission to MTC UEs comprises:
the MME sends the information representing the switching data transmission mode to the MTC UE through a non-access stratum (NAS) downlink message;
or, the MME sends the information indicating the switching data transmission manner to a base station, and the base station sends the information indicating the switching data transmission manner to the MTC UE.
4. The method according to claim 3, wherein the MME sends the information indicating the switching of the data transmission mode to the base station through an S1 interface message, and the base station sends the information indicating the switching of the data transmission mode to the MTC UE through an air interface message.
5. The method of claim 4, wherein the S1 interface message is a UE text release message or an S1 interface paging message.
6. The method according to claim 4, wherein the air interface message is an air interface paging message or an air interface RRC downlink message.
7. The method according to claim 1, wherein the information indicating switching of the data transmission scheme is information indicating whether or not switching of the data transmission scheme is performed, or information indicating switching to a user plane scheme or a control plane scheme.
8. A method for implementing data transmission, comprising:
the method comprises the steps that Machine Type Communication (MTC) User Equipment (UE) receives information which is from an MME and indicates switching of a data transmission mode, and the UE and the MME switch the data transmission mode;
the switching of the data transmission mode with the MME comprises the following steps:
the MTC UE sends a detach request to the MME through a base station;
the MTC UE receives a Dettach response sent by the MME through a base station, and sends an Attach request to the MME through the base station; when the MTC UE sends the Dettach request to the MME through the base station, or when the MTC UE receives a Dettach response sent by the MME through the base station, deleting the stored information related to the current data transmission mode;
and the MTC UE receives an Attach response sent by the MME through a base station and stores information related to the switched data transmission mode in the Attach response.
9. The method of claim 8, wherein the receiving, by the MTC UE, the information indicating switching of data transmission from the MME comprises:
the MTC UE receives information which is sent by a non-access stratum NAS downlink message from the MME and represents a switching data transmission mode;
or the MTC UE receives information which is sent by the MME through a base station and represents a switching data transmission mode.
10. The method according to claim 9, wherein the information indicating switching of the data transmission scheme is information indicating whether or not switching of the data transmission scheme is performed, or information indicating switching to a user plane scheme or a control plane scheme.
11. A mobility management unit, MME, characterized by at least comprising:
the judging module is used for judging that Machine Type Communication (MTC) User Equipment (UE) needs to switch a data transmission mode and sending a first notification message to the processing module;
the first processing module is used for receiving the first notification message, sending information indicating switching of data transmission modes to a base station or the MTC UE, and switching the data transmission modes with the MTC UE;
the first processing module is specifically configured to:
receiving the first notification message, and sending information indicating switching of data transmission modes to the base station or the MTC UE;
receiving a detach request from the base station, sending a detach response to the base station, and deleting information related to the current data transmission mode; and receiving an Attach request from the base station, selecting a switched data transmission mode, sending an Attach response to the base station, and storing data related to the switched data transmission mode.
12. The MME of claim 11, wherein the determining module is specifically configured to:
judging that the MTC UE needs to switch the data transmission mode according to any one or more of the following data transmission modes and the current data transmission mode: sending the service type of data, the load of the current network, the reason for receiving the radio resource control RRC from the MTC UE, the data information sent by the MME, and the indication information received from the base station, and sending the first notification message to the processing module.
13. The MME of claim 11, wherein the first processing module is specifically configured to:
and receiving the first notification message, sending information representing switching of data transmission modes to the base station through an S1 interface message or sending the information representing switching of data transmission modes to the MTC UE through a non-access stratum (NAS) downlink message, and switching the data transmission modes with the MTC UE.
14. A Machine Type Communication (MTC) User Equipment (UE), comprising at least:
the acquisition module is used for receiving the information which is from the MME and indicates the switching of the data transmission mode and sending a second notification message to the second processing module;
the second processing module is used for receiving the second notification message and switching the data transmission mode with the MME;
the second processing module is specifically configured to:
receiving the second notification message, and sending a detach request to the MME through a base station; receiving a Dettach response sent by the MME through a base station, and sending an Attach request to the MME through the base station; when the Dettach request is sent to the MME through the base station or a Dettach response sent by the MME through the base station is received, deleting the stored information related to the current data transmission mode; and receiving an Attach response sent by the MME through a base station, and storing information related to the switched data transmission mode in the Attach response.
15. The MTC UE according to claim 14, wherein the obtaining module is specifically configured to:
and receiving information indicating a switching data transmission mode sent by a non-access stratum (NAS) downlink message from the MME or receiving information indicating a switching data transmission mode sent by the MME through a base station, and sending the second notification message to the second processing module.
16. A system for implementing data transmission, comprising at least:
the mobility management unit MME is used for judging that machine type communication MTC user equipment UE needs to switch a data transmission mode and sending information representing the data transmission mode to the MTC UE; switching data transmission modes with MTC UE;
the MTC UE is used for receiving the information which is from the MME and indicates the switching of the data transmission mode, and switching the data transmission mode with the MME;
the MME is specifically configured to:
judging that the MTC UE needs to switch the data transmission mode, and sending information representing the data transmission mode switching to the MTC UE; receiving a detach request from a base station, sending a detach response to the base station, and deleting information related to the current data transmission mode; receiving an Attach request from the base station, selecting a switched data transmission mode, sending an Attach response to the base station, and storing data related to the switched data transmission mode;
further comprising:
the base station is used for receiving a Dettach request from the MTC UE and sending the Dettach request to the MME; receiving a Dettach response from the MME, and sending the Dettach response to the MTC UE; receiving an Attach request from the MTC UE, and sending the Attach request to the MME; receiving an Attach response from the MME, and sending the Attach response to the MTC UE;
the MTC UE is specifically configured to:
receiving information which is from the MME and indicates a data transmission mode switching, and sending a Dettach request to the base station; receiving a Dettach response from the base station, and sending an Attach request to the base station; when the Dettach request is sent to the MME through the base station or a Dettach response sent by the MME through the base station is received, deleting the stored information related to the current data transmission mode; and receiving an Attach response from the base station, and storing information related to the switched data transmission mode in the Attach response.
17. The system of claim 16, wherein the MME is specifically configured to:
judging that the MTC UE needs to switch the data transmission mode according to any one or more of the following data transmission modes and the current data transmission mode: sending the service type of the data, the load of the current network, the received Radio Resource Control (RRC) access reason from the MTC UE, the data information issued by the MME, the received indication information from the base station, and sending information representing switching of data transmission modes to the MTC UE.
18. The system of claim 16, wherein the MME is specifically configured to:
judging that the MTC UE needs to switch the data transmission mode, and sending information representing the data transmission mode to the MTC UE through non-access stratum (NAS) downlink information; and switching the data transmission mode with the MTC UE.
19. The system of claim 16, wherein the MME is specifically configured to:
judging that the MTC UE needs to switch the data transmission mode, and sending information representing the data transmission mode to a base station; switching data transmission modes with MTC UE;
further comprising:
and the base station is used for receiving the information which represents the switching data transmission mode from the MME and sending the information which represents the switching data transmission mode to the MTC UE.
20. The system of claim 19, wherein the MME is specifically configured to:
judging that the MTC UE needs to switch the data transmission mode, and sending information representing the data transmission mode to a base station through an S1 interface message; switching data transmission modes with MTC UE;
the base station is specifically configured to:
and receiving information indicating a switching data transmission mode from the MME, and sending the information indicating the switching data transmission mode to the MTC UE through an air interface message.
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