CN107801206A - The method and device of web impact factor - Google Patents
The method and device of web impact factor Download PDFInfo
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- CN107801206A CN107801206A CN201610811585.4A CN201610811585A CN107801206A CN 107801206 A CN107801206 A CN 107801206A CN 201610811585 A CN201610811585 A CN 201610811585A CN 107801206 A CN107801206 A CN 107801206A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0289—Congestion control
Abstract
A kind of method and device of web impact factor is disclosed herein, including：User equipment (UE) receives the session management messages from network side, and the session management messages carry delay access timer, and indicate packet data network PDN types corresponding to delay access timer；UE starts the delay access timer, and the attended operation of other PDN types, the PDN types that other described PDN types are accessed outside PDN types corresponding to timer for the delay are performed in the delay access timer operation.The APN congestion controls for PDN types are realized, solves the problems, such as to retry signaling excessively and causes the APN of all PDN types to be all unable to access service in some PDN type congestion.
Description
Technical field
The application is related to wireless communication field, and in particular to a kind of method and device of web impact factor.
Background technology
Mobile communication has evolved to the 4G stages at present.The 4G network architecture is compared with earlier generations, is mainly characterized by being based on
Full IP transmission.
Fig. 1 is a kind of schematic diagram of the 4G network architectures.Wherein, the function of each network element is as follows in the network architecture shown in Fig. 1：
Terminal (UE, User Equipment), 4G networks are mainly accessed by radio open and serviced, terminal passes through
Eat dishes without rice or wine and base station interactive information, pass through the mobility pipe of Non-Access Stratum signaling (NAS, Non-Access Stratum) and core net
Manage entity interaction information.
Base station (RAN, Radio Access Network), it is responsible for the interface-free resources scheduling of accessing terminal to network and eats dishes without rice or wine
Connection management.
Mobile management unit：It is core network control surface entity, it is main to be responsible for examining the authentication of user, mandate and signing
Look into, to ensure that user is validated user；User mobility management, including location registration and temporary mark distribution；Safeguard idle
(IDLE) (CONNECT) state and state transition, are connected；Switching under CONNECT states；Packet data network (PDN)
Connection and the maintenance of carrying, including the function of session management such as create, change and delete；Paging is triggered under user's IDLE state
Etc. function.
Gateway (Serving GW)：Core network user face functional entity, mainly under responsible roaming condition and PDN Gateway
(GW) interaction；Downlink data packet is received under user's IDLE state to be cached and notify mobile management entity (MME, Mobile
Management Entity) calling user；Across the user plane anchor point of base station and across the ambulant user plane anchor points of 2G/3G/4G
Etc. function.
Packet data gateway (PDN GW)：Core network user face functional entity, it is the access point of terminal access PDN networks,
It is responsible for distributing user IP address, the carrying of network-triggered is established, changes and deleted, also with service quality (Quality of
Service, QoS) functions such as charging are controlled, it is that user cuts in 3GPP system and between 3GPP system and non-3 GPP system
The anchor point changed, so as to ensure that IP address is constant, ensure business continuance.
Network ability opens functional entity (Service Capability Exposure Function, SCEF)：
Its function includes non-IP data transmission grants inspection, T6 connection managements, the non-IP data deliveries of up-downgoing.
Fig. 2 is the process that PDN connections are established in UE requests in 4G networks, and specific steps include as follows：
Step 201, after the completion of UE attachments, UE sends PDN connections to MME and establishes request message, and PDN classes are carried in message
Type, the PDN types IP types such as including IPv4, IPv6, IPv4v6, PDN types can also be non-IP (non-IP) types；In message
APN can also be carried；
Step 202, MME comes according to PDN types in step 201 and APN (APN, Access Point Name)
PGW is selected to be serviced for it, if PDN types are non-IP types, then MME can also select SCEF to come for its service；If step
Without carrying APN in rapid 201 message, then MME selects default APN as its service, and according to default APN come select PGW or
SCEF.If that MME selections is PGW, MME sends to PGW and establishes conversation request message, and the world that user is carried in message is mobile
CUSTOMER ID (IMSI, International Mobile Subscriber Identity), PDN types, carry ID, tunnel
ID；If MME have selected SCEF, MME is sent to SCEF and establishes SCEF connection request messages, and IMSI, PDN classes are carried in message
Type, MME marks.
Step 203, PGW is returned to MME and is established conversational response message, and up PGW tunnels ID is carried in message；SCEF to
MME is returned and is established SCEF connection response messages；
Step 204, MME sends NAS activation Default Bearer Request message to UE, and carrying ID, carrying QoS are carried in message
Deng；
Step 205, UE returns to activation default bearer received message to MME；
When a large amount of UE establish PDN connections or request resource modifying to same APN requests together, network may
The related congestions of APN occur, in order to preferably make network stabilization, network side can realize APN congestion controls to a certain APN, such as
It is the method that this congestion control is realized in correlation technique shown in Fig. 3, mainly may include following steps：
Step 301-302, with step 201-202；
Step 303, PGW or SCEF is because load is too high, it is impossible to receive new PDN connections foundation, PGW or SCEF to
MME, which is returned, to be established conversational response message or establishes SCEF connection response messages, and Reason For Denial value is carried in message and APN is related
Delay access timer,
Step 304, MME returns to PDN connections to UE and establishes refuse information, and Reason For Denial value is carried in message and APN is related
Delay access timer；
UE starts the delay access timer T3396 (APN) based on APN, and when timer T3396 (APN) is run, UE is not
The signaling that the related PDN of this APN establish request request or resource modifying can be initiated；
When UE is establishing PDN connections, if UE does not carry APN (steps 301), then UE, which starts, is based on nothing
APN (no APN) delay access timer T3396 (no APN), when T3396 (no APN) is run, UE can not initiate not take
The money of this PDN connection (if PDN connections do not carry APN when foundation) is established or can not initiated in PDN connections with APN
Source modification operation.
Above-mentioned jamming control method in correlation technique, identical APN but different PDN types (PDN type) are used in UE
When, MME can be that it selects different types of PGW or SCEF to be attached；It is being in addition IP or non-as PDN type
During IP, UE default APN is probably different APN, so the T3396 based on APN is likely to result in the PDN connections of UE all types
Business can not be obtained within a certain period of time.UE can also directly think that APN corresponding to different PDN types is different APN, still
If network side, which is different types of PDN connections, chooses same PGW or SCEF, then this will also result in retries signaling mistake
It is more, Internet resources are not only wasted, and be also difficult to avoid that the related congestions of APN occur for network.
The content of the invention
In order to solve the above-mentioned technical problem, the embodiments of the invention provide a kind of method and device of web impact factor.
The embodiments of the invention provide a kind of method of web impact factor, including：
User equipment (UE) receives the session management messages from network side, and it is fixed that the session management messages carry delay access
When device, and indicate the delay access timer corresponding to packet data network PDN types；
UE starts the delay access timer, and other PDN types are performed in the delay access timer operation
Attended operation, the PDN types that other described PDN types are accessed outside PDN types corresponding to timer for the delay.
Wherein, the PDN types include IP types and non-IP types；
The attended operation of other PDN types, including as follows one or more are performed in the delay access timer operation
：
When the delay access timer corresponds to IP types, in the delay access timer operation, the UE is performed
Non- IP types PDN attended operation；
When the delay access timer corresponds to non-IP types, in the delay access timer operation, the UE is held
Row IP types PDN attended operation.
Wherein, after UE starts the delay access timer, in addition to：
In the delay access timer operation, the UE does not perform PDN classes corresponding to the delay access timer
The attended operation of type.
Wherein, the PDN types include IP types and non-IP types；
Do not perform the PDN attended operations of PDN types corresponding to the delay access timer in the UE, including it is following it
One or more：
When the delay access timer corresponds to IP types, in the delay access timer operation, the UE is to IP
Type PDN connections do not perform the operation established and initiate modification；
When the delay access timer corresponds to non-IP types, in the delay access timer operation described UE pairs
Non- IP types PDN connections do not perform the operation established and initiate modification；
When the delay access timer corresponds to IP types and non-IP types, in the delay access timer operation
UE does not perform the operation established and initiate modification to all types PDN connections.
Wherein, the operation for not performing foundation and initiating modification, including：One of following NAS or multinomial is not sent：
Request is established in PDN connections；
Resource modifying signaling.
Wherein, after the UE starts the delay access timer, in addition to：
When receiving the Non-Access Stratum signaling NAS from network side, the UE stops corresponding delay access timer,
Corresponding delay access timer is identical with the PDN types of the NAS.
Wherein, when receiving the Non-Access Stratum signaling NAS from network side, it is fixed that the UE stops corresponding delay access
When device, including one or more following：
When the delay access timer of operation corresponds to IP types, when receiving the NAS of IP types PDN connections described in stopping
Delay access timer；
When the delay access timer of operation corresponds to non-IP types, stop during the NAS for receiving non-IP types PDN connections
The delay access timer；
When the delay access timer of operation corresponds to IP types and non-IP types, IP types or non-IP types are received
Stop the delay access timer during NAS of PDN connections.
The embodiment of the present invention additionally provides a kind of device for web impact factor, applied to user equipment (UE), including：
First receiving unit, for receiving the session management messages from network side, the session management messages, which carry, prolongs
Access timer late, and indicate packet data network PDN types corresponding to delay access timer；
Start unit, for starting the delay access timer；
Execution unit, for performing the attended operation of other PDN types in the delay access timer operation；Its
In, other described PDN types are the PDN types outside PDN types corresponding to the delay access timer.
Wherein, the PDN types include IP types and non-IP types；
The execution unit, is used for：The behaviour of other PDN types connection is performed in the delay access timer operation
Make, including one or more following：
When the delay access timer corresponds to IP types, in the delay access timer operation, the UE is performed
Non- IP types PDN attended operation；
When the delay access timer corresponds to non-IP types, in the delay access timer operation, the UE is held
Row IP types PDN attended operation.
Wherein, the execution unit, it is additionally operable to, in the delay access timer operation, not perform the delay access
The attended operation of PDN types corresponding to timer.
Wherein, first receiving unit, it is additionally operable to receive the Non-Access Stratum signaling NAS from network side；
Also include：Stop element, the NAS for being received according to first receiving unit stop corresponding delay access
Timer, corresponding delay access timer are identical with the PDN types of the NAS.
Wherein, the NAS that the stop element is used to be received according to first receiving unit stops corresponding delay and connect
Enter timer, including one or more following：
When the delay access timer of operation corresponds to IP types, the NAS that first receiving unit receives corresponds to IP
Stop the delay access timer during type PDN connections；
When the delay access timer of operation corresponds to non-IP types, the NAS that first receiving unit receives is corresponding
Stop the delay access timer during non-IP types PDN connections；
When the delay access timer of operation corresponds to IP types and non-IP types, what first receiving unit received
NAS stops the delay access timer when corresponding to IP types or non-IP types PDN connections.
The embodiment of the present invention additionally provides a kind of device for web impact factor, applied to user equipment (UE), including：
Processor and memory；The memory is used to store the program for web impact factor, and the processor is used to read institute
The program for web impact factor is stated to perform following operation：
The session management messages from network side are received, the session management messages carry delay access timer, and refer to
Show packet data network PDN types corresponding to delay access timer；
Start the delay access timer, the company of other PDN types is performed in the delay access timer operation
Connect operation, the PDN types that other described PDN types are accessed outside PDN types corresponding to timer for the delay.
The method that the embodiment of the present invention also provides another web impact factor, including：
Mobile management unit sends session management messages to user equipment (UE), and the session management messages carry delay access
Timer, and packet data network PDN types corresponding to delay access timer are indicated, so that the UE connects in the delay
Enter the attended operation that other PDN types are performed during timer operation, other described PDN types are the delay access timer institute
PDN types outside corresponding PDN types.
Wherein, the session management messages are that refuse information is established in PDN connections.
Wherein, before sending session management messages to UE, in addition to：
The mobile management unit receives opens functional entity from packet data gateway PGW or Network ability
SCEF's establishes conversational response message or establishes SCEF connection response messages, described to establish conversational response message or foundation
The delay access timer and its corresponding PDN types are carried in SCEF connection response messages.
Wherein, in addition to：Mobile management unit sends session management messages to the UE, and the session management messages are non-
Access Layer signaling NAS, so that the UE stops corresponding delay access timer according to the NAS, corresponding delay connects
It is identical with the PDN types of the NAS to enter timer.
Wherein, the session management messages are activation dedicated bearing request message.
Wherein, the mobile management unit is mobile management entity MME, Serving GPRS Support Node, chain of command moving tube
Manage entity or chain of command session management entity.
The embodiment of the present invention additionally provides a kind of device for web impact factor, applied to mobile management unit, bag
Include：
First transmitting element, for sending session management messages to user equipment (UE), the session management messages, which carry, prolongs
Access timer late, and packet data network PDN types corresponding to delay access timer are indicated, so that the UE is described
The attended operation of other PDN types is performed during delay access timer operation, other described PDN types are fixed for the delay access
When PDN types corresponding to device outside PDN types.
Wherein, first transmitting element, it is additionally operable to send session management messages, the session management messages to the UE
It is corresponding to prolong so that the UE stops corresponding delay access timer according to the NAS for Non-Access Stratum signaling NAS
Access timer is identical with the PDN types of the NAS late.
Wherein, in addition to：Second receiving unit, packet data gateway PGW or Network ability are come from for receiving
Open functional entity SCEF's establishes conversational response message or establishes SCEF connection response messages, and the conversational response of establishing disappears
Cease or establish in SCEF connection response messages and carry the delay access timer and its corresponding PDN types.
The embodiment of the present invention additionally provides a kind of device for web impact factor, applied to mobile management unit, bag
Include：Processor and memory；The memory is used to store the program for web impact factor, and the processor is used to read
The program for web impact factor performs following operation：
Session management messages are sent to user equipment (UE), the session management messages carry delay access timer, and refer to
Show packet data network PDN types corresponding to delay access timer, so that the UE is in the delay access timer fortune
The attended operation of other PDN types is performed during row, other described PDN types access PDN classes corresponding to timer for the delay
PDN types outside type.
On the other hand, the embodiment of the present application also provides a kind of computer-readable recording medium, is stored with computer and can perform
Instruction, the computer executable instructions realize a kind of above-mentioned web impact factor method when being performed.
On the other hand, the embodiment of the present application also provides a kind of computer-readable recording medium, is stored with computer and can perform
Instruction, the computer executable instructions realize above-mentioned another web impact factor method when being performed.
The method of web impact factor provided in an embodiment of the present invention, the APN congestion controls for PDN types are realized,
Solve and retry signaling excessively and cause the APN of all PDN types to be all unable to access service in some PDN type congestion
The problem of.
Brief description of the drawings
Accompanying drawing is used for providing further understanding technical solution of the present invention, and a part for constitution instruction, with this
The embodiment of application is used to explain technical scheme together, does not form the limitation to technical solution of the present invention.
Fig. 1 is 4G network architecture schematic diagrams；
Fig. 2 is that the schematic flow sheet of PDN connections is established in UE requests under 4G networks in correlation technique；
Fig. 3 is the schematic flow sheet of 4G network lower network congestion controls in correlation technique；
Fig. 4 is the schematic flow sheet of method for controlling network congestion in the embodiment of the present invention one；
Fig. 5 is the specific implementation schematic flow sheet of web impact factor in the embodiment of the present invention three；
Fig. 6 is the specific implementation schematic flow sheet of web impact factor in the embodiment of the present invention four；
Fig. 7 is the specific implementation schematic flow sheet of web impact factor in the embodiment of the present invention five；
Fig. 8 is a kind of composition structural representation of device for web impact factor of the embodiment of the present invention；
Fig. 9 is the composition structural representation of another device for being used for web impact factor of the embodiment of the present invention.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with accompanying drawing to the present invention
Embodiment be described in detail.It should be noted that in the case where not conflicting, in the embodiment and embodiment in the application
Feature can mutually be combined.
Can be in the computer system of such as one group computer executable instructions the flow of accompanying drawing illustrates the step of
Perform.Also, although logical order is shown in flow charts, in some cases, can be with suitable different from herein
Sequence performs shown or described step.
Embodiment one
As shown in figure 4, the application provides a kind of method of web impact factor, can include：
Step 401, UE receives the session management messages from network side, and it is fixed that the session management messages carry delay access
When device, and indicate the delay access timer corresponding to PDN types；
Step 402, UE starts the delay access timer, and other are performed in the delay access timer operation
The attended operation of PDN types, the PDN classes that other described PDN types are accessed outside PDN types corresponding to timer for the delay
Type.
In the application, the execution of PDN type attended operations is carried out according to the PDN types of delay access timer, prolonged
Access timer continues executing with the PDN operations of other PDN types late after starting, and not only realizes APN corresponding to different PDN types
Congestion control, and solve and retry signaling excessively and cause the APN of all PDN types all in some PDN type congestion
The problem of being unable to access service, saves Internet resources, and the efficiency of congestion control is also improved.
In some implementations, UE starts the delay access timer, can include：If the delay access is fixed
When device be based on APN, and UE has had learned that in the APN or the session management messages while has indicated the delay
Access APN corresponding to timer, then UE can start the delay timer based on the APN；If UE is not known by APN and described
Also without APN corresponding to the instruction delay access timer in session management messages, then UE can start based on without APN's
Delay access timer.
Specifically, the PDN types can include IP types and non-IP types；In the delay access timer operation
Perform the attended operation of other PDN types, including one or more following：
When the delay access timer corresponds to IP types, in the delay access timer operation, the UE is performed
Non- IP types PDN attended operation；
When the delay access timer corresponds to non-IP types, in the delay access timer operation, the UE is held
Row IP types PDN attended operation.
In some implementations, the attended operation of other PDN types is performed in the delay access timer operation
When, involved attended operation can be foundation and the operation for initiating modification, and more particularly, the attended operation can include：
PDN connections are initiated to establish request or initiate signaling of resource modifying etc..
That is, after UE starts the delay access timer, can be held during the delay access timer operation
Row is as follows：
If 1) the delay access timer is for IP types, then UE can still send the PDN for establishing non-IP
The operation such as connection foundation or resource modifying；
If 2) the delay access timer is for non-IP types, then UE still can send and establish IP's
The operation such as PDN connections foundation or resource modifying；
If 3) the delay access timer is for IP types and non-IP types, then UE is to all types of
APN connections do not perform the operation established and initiate modification.
Wherein, after UE starts the delay access timer, can also include：In the delay access timer operation
When, the UE does not perform the attended operation of PDN types corresponding to the delay access timer.
Specifically, the PDN attended operations of PDN types corresponding to the delay access timer, bag are not performed in the UE
Include one or more following：
When the delay access timer corresponds to IP types, in the delay access timer operation, the UE is to IP
Type PDN connections do not perform the operation established and initiate modification；
When the delay access timer corresponds to non-IP types, in the delay access timer operation described UE pairs
Non- IP types PDN connections do not perform the operation established and initiate modification；
When the delay access timer corresponds to IP types and non-IP types, in the delay access timer operation
UE does not perform the operation established and initiate modification to all types PDN connections.
In some implementations, the operation for not performing foundation and initiating modification, including：Do not send in following NAS
One or more：1) request is established in PDN connections；2) resource modifying signaling.
In some implementations, after the UE starts the delay access timer, can also include：Receiving
During Non-Access Stratum signaling NAS from network side, the UE stops corresponding delay access timer, and corresponding delay connects
It is identical with the PDN types of the NAS to enter timer.
Specifically, when receiving the Non-Access Stratum signaling NAS from network side, the UE stops corresponding delay access
Timer, including one or more following：
When the delay access timer of operation corresponds to IP types, when receiving the NAS of IP types PDN connections described in stopping
Delay access timer；
When the delay access timer of operation corresponds to non-IP types, stop during the NAS for receiving non-IP types PDN connections
The delay access timer；
When the delay access timer of operation corresponds to IP types and non-IP types, IP types or non-IP types are received
Stop the delay access timer during NAS of PDN connections.
That is, when UE receives the NAS of the same APN of network side transmission PDN connections, UE can stop described prolonging
Access timer late, it is specific as follows：
1) delay that if UE had previously been run accesses timer for IP types, then receives IP types
During the NAS of PDN connections, UE stops the delay access timer；
2) delay that if UE had previously been run accesses timer for non-IP types, then receives non-IP types
PDN connections NAS when, UE stop it is described delay access timer；
3) delay that if UE had previously been run accesses timer for non-IP types and IP types, then receives
During the NAS of the PDN connections of non-IP types or IP types, UE stops the delay access timer.
Embodiment two
In addition, the application also provides another method for controlling network congestion, this method can include：
Mobile management unit sends session management messages to UE, and the session management messages carry delay access timer,
And PDN types corresponding to delay access timer are indicated, so that the UE performs in the delay access timer operation
The attended operation of other PDN types, other described PDN types are accessed outside PDN types corresponding to timer for the delay
PDN types.
In practical application, the session management messages can be that refuse information is established in PDN connections.Wherein, session is sent to UE
Before managing message, it can also include：The mobile management unit receives establishes conversational response message from PGW or SCEF
Or establish SCEF connection response messages, it is described establish conversational response message or establish in SCEF connection response messages carry institute
State delay access timer and its corresponding PDN types.
In some implementations, the above method may also include：Mobile management unit sends session management to the UE and disappeared
Breath, the session management messages are NAS, so that the UE stops corresponding delay access timer, the phase according to the NAS
The delay access timer answered is identical with the PDN types of the NAS.In practical application, the session management messages are proprietary to activate
Bearing request message.
In the application, in session management messages, (refuse information is established in such as PDN connections to mobile management unit；Activate proprietary hold
Carrying request message) middle carry postpones access timer, and indicates that type is (e.g., for IP classes corresponding to delay access timer
Type and/or non-IP types)；Wherein, mobile management unit can be MME in a 4 g system, can be service in 3G systems
GPRS Support Node (Serving GPRS Support Node, SGSN), can be chain of command mobile management reality in 5G systems
Body or chain of command session management entity.
Pass through the above method so that UE carries out PDN type attended operations according to the PDN types of delay access timer
Perform, the PDN operations of other PDN types are continued executing with after delay access timer starts, not only realize different PDN types
Corresponding APN congestion controls, and solve and retry signaling excessively and cause all PDN classes in some PDN type congestion
The APN of type is unable to the problem of access service, saves Internet resources, and the efficiency of congestion control is also improved.
Embodiment three
As shown in figure 5, the flow of web impact factor may include steps of in the present embodiment：
Step 501, after the completion of UE attachments, UE sends PDN connections to MME and establishes request message, and PDN classes are carried in message
Type, the PDN types IP types such as including IPv4, IPv6, IPv4v6, PDN types can also be non-IP types；It can also be taken in message
Band APN；
Step 502, MME selects PGW to be serviced for it according to PDN types in step 501 and APN, if PDN type right and wrong
IP types, then MME can also select SCEF to come for its service；If without carrying APN in step 501 message, then MME is selected
Select default APN to service for it, and PGW or SCEF is selected according to default APN.If that MME selections is PGW, MME is to PGW
Conversation request message is established in transmission, and IMSI, PDN type, the carrying ID and tunnel ID of user are carried in message；If MME is selected
SCEF, MME are sent to SCEF and establish SCEF connection request messages, and IMSI, PDN type and MME marks are carried in message.
Step 503, PGW or SCEF is because load is too high, it is impossible to receive new PDN connections foundation, PGW or SCEF to
MME, which is returned, to be established conversational response message or establishes SCEF connection response messages, and Reason For Denial value is carried in message and APN is related
Delay access timer, PGW or SCEF indicate that this delay access timer is the PDN connections only for IP types simultaneously
And/or the PDN connections for non-IP types；
Step 504, MME returns to PDN connections to UE and establishes refuse information, and Reason For Denial value is carried in message and APN is related
Delay access timer, while indicate the related delay access timers of this APN be for IP types PDN connections and/or
For the PDN connections of non-IP types；
UE, which starts to access based on PDN connections of the APN for IP types and/or the PDN connection delays for non-IP types, to be determined
When device T3396 (APN, PDN type), when timer T3396 (APN, PDN type) is run, it is related same that UE can not initiate this APN
The PDN of PDN types establishes the signaling of request or resource modifying, can continue to initiate the PDN of the related non-PDN types of this APN
Establish the signaling of request or resource modifying.
When UE is establishing PDN connections, if PDN connections establish refuse information and do not carry APN, then UE, which starts, to be based on
Delay without PDN connections of the APN (no APN) for IP types and/or the PDN connections for non-IP types accesses timer
T3396 (no APN, PDN type), when T3396 (no APN, PDN type) is run, UE can not initiate not carrying the same of APN
Such PDN connections (if PDN connections do not carry APN when foundation) are established or can not initiated in the PDN connections of PDN types
Resource modifying operation, but still the PDN connections that can initiate not carry the APN non-PDN types are established or resource modifying is grasped
Make.
If specifically, 1) it is described delay access timer for IP types, then UE can still send establish it is non-
The operation such as IP PDN connections foundation or resource modifying, the operation established and initiate modification is not performed to the PDN connections of IP types；
If 2) the delay access timer is for non-IP types, then UE, which still can be sent, to be established IP PDN connections and build
The operation such as vertical or resource modifying, the operation established and initiate modification is not performed to non-IP types PDN connections；3) if described prolong
Late access timer for IP types and non-IP types, then UE to all types of APN connections do not perform establish with
Initiate the operation of modification.
Example IV
As shown in fig. 6, the flow of web impact factor may include steps of in the present embodiment：
Step 601, after the completion of UE attachments, UE sends PDN connections to MME and establishes request message, and PDN classes are carried in message
Type, the PDN types IP types such as including IPv4, IPv6, IPv4v6, PDN types can also be non-IP types；It can also be taken in message
Band APN；
Step 602, if MME does not find suitable PGW or SCEF and serviced for UE, MME directly returns to PDN to UE and connected
Connect and establish refuse information, the delay access timer of Reason For Denial value and APN correlations is carried in message, while indicate this APN phase
The delay access timer of pass is the PDN connections for IP types and/or the PDN connections for non-IP types；
UE, which starts to access based on PDN connections of the APN for IP types and/or the PDN connection delays for non-IP types, to be determined
When device T3396 (APN, PDN type), when timer T3396 (APN, PDN type) is run, it is related same that UE can not initiate this APN
The PDN of PDN types establishes the signaling of request or resource modifying, can continue to initiate the PDN of the related non-PDN types of this APN
Establish the signaling of request or resource modifying.
When UE is establishing PDN connections, if PDN connections establish refuse information and do not carry APN, then UE, which starts, to be based on
Delay without PDN connections of the APN (no APN) for IP types and/or the PDN connections for non-IP types accesses timer
T3396 (no APN, PDN type), when T3396 (no APN, PDN type) is run, UE can not initiate not carrying the same of APN
Such PDN connections (if PDN connections do not carry APN when foundation) are established or can not initiated in the PDN connections of PDN types
Resource modifying operation, but still the PDN connections that can initiate not carry the APN non-PDN types are established or resource modifying is grasped
Make.
If specifically, 1) it is described delay access timer for IP types, then UE can still send establish it is non-
The operation such as IP PDN connections foundation or resource modifying, the operation established and initiate modification is not performed to the PDN connections of IP types；
If 2) the delay access timer is for non-IP types, then UE, which still can be sent, to be established IP PDN connections and build
The operation such as vertical or resource modifying, the operation established and initiate modification is not performed to non-IP types PDN connections；3) if described prolong
Late access timer for IP types and non-IP types, then UE to all types of APN connections do not perform establish with
Initiate the operation of modification.
Embodiment five
As shown in fig. 7, the flow of web impact factor may include steps of in the present embodiment：
Step 701, PGW is sent to MME establishes bearing request message or SCEF to MME transmission SCEF connection renewal requests
Message；
Step 702, MME sends activation dedicated bearing request message to UE, and carrying ID and carrying QoS are carried in message；
Step 703, after UE receives activation dedicated bearing request, UE stops delay access timing corresponding to corresponding PDN types
Device；
Perform as follows：
If current PDN connections are non-IP types, the T3396 timers based on APN of UE operations are to be directed to non-IP classes
Type, then UE stops this T3396 timer, and such UE cans initiate the PDN connections foundation of non-IP types or resource is repaiied
Change；
If current PDN connections are IP types, the T3396 timers of UE operations are for IP types, then UE stops
T3396 timers here, such UE cans initiate PDN connections foundation or the resource modifying of IP types；
If current PDN connections are IP types or non-IP types, the T3396 timers of UE operations are to be directed to IP types
With non-IP types, then UE stops this T3396 timer, and such UE cans initiate the PDN of IP types or non-IP types
Connection is established or resource modifying；
If current PDN connections are IP types, the T3396 timers of UE operations are for non-IP types, UE operations
T3396 timers continue to run with；
If current PDN connections are non-IP types, the T3396 timers of UE operations are for IP types, UE operations
T3396 timers continue to run with；
Step 704, UE returns to activation carrying received message to MME；
Step 705, MME returns to establish bearing response message or return to SCEF connections to PGW updates response message.
In the present embodiment, UE can stop corresponding delay access timer according to NAS PDN types, in this way, realizing
The APN congestion controls of specific PDN types are directed to, solve the problems, such as to retry signaling excessive, save Internet resources, congestion control
The efficiency of system is also improved.
Embodiment six
In the present embodiment, there is provided a kind of device for web impact factor, applied to UE, it may include：
First receiving unit 81, for receiving the session management messages from network side, the session management messages carry
Delay access timer, and indicate packet data network PDN types corresponding to delay access timer；
Start unit 82, for starting the delay access timer；
Execution unit 83, for performing the attended operation of other PDN types in the delay access timer operation；Its
In, other described PDN types are the PDN types outside PDN types corresponding to the delay access timer.
Specifically, the PDN types include IP types and non-IP types；The execution unit 83, is used for：In the delay
The operation of other PDN types connection, including one or more following are performed during access timer operation：
When the delay access timer corresponds to IP types, in the delay access timer operation, the UE is performed
Non- IP types PDN attended operation；
When the delay access timer corresponds to non-IP types, in the delay access timer operation, the UE is held
Row IP types PDN attended operation.
Wherein, the execution unit 83, it may also be used in the delay access timer operation, do not perform the delay
Access the attended operation of PDN types corresponding to timer.Specifically, it is right not perform the delay access timer institute in the UE
Answer the PDN attended operations of PDN types, including one or more following：
When the delay access timer corresponds to IP types, in the delay access timer operation, the UE is to IP
Type PDN connections do not perform the operation established and initiate modification；
When the delay access timer corresponds to non-IP types, in the delay access timer operation described UE pairs
Non- IP types PDN connections do not perform the operation established and initiate modification；
When the delay access timer corresponds to IP types and non-IP types, in the delay access timer operation
UE does not perform the operation established and initiate modification to all types PDN connections.
In some implementations, first receiving unit 81, it may also be used for receive the Non-Access Stratum from network side
Signaling NAS；
Described device may also include：Stop element 82, the NAS for being received according to first receiving unit 81 stop
Corresponding delay access timer, corresponding delay access timer are identical with the PDN types of the NAS.
Specifically, the stop element 82 can be used for the NAS received according to first receiving unit to stop accordingly
Delay access timer, including one or more following：
When the delay access timer of operation corresponds to IP types, the NAS that first receiving unit 81 receives is corresponding
Stop the delay access timer during PDN connections of IP types；
When the delay access timer of operation corresponds to non-IP types, receive NAS pairs of first receiving unit 81
Stop the delay access timer when answering non-IP types PDN connections；
When the delay access timer of operation corresponds to IP types and non-IP types, first receiving unit 81 receives
NAS stop the delay access timer when corresponding to IP types or non-IP types PDN connections.
In practical application, the first receiving unit 81, start unit 82, execution unit 83 and stop element 84 respectively can be with
It is the combination of software, hardware or both.For example, the first receiving unit 81 can be realized by receiving device, start unit 82, hold
Row unit 83 and stop element 84 can be realized by processor.Said apparatus can be used by configuring on UE, also may be used
Directly to be realized by UE.Here UE can be mobile phone, PC or other have described in communication function and above-mentioned each unit
The electronic equipment of function.
In addition, a kind of device for web impact factor is also provided, applied to user equipment (UE), including：Processing
Device and memory；The memory is used to store the program for web impact factor, and the processor is used to read the use
Following operation is performed in the program of web impact factor：
The session management messages from network side are received, the session management messages carry delay access timer, and refer to
Show PDN types corresponding to delay access timer；
Start the delay access timer, the company of other PDN types is performed in the delay access timer operation
Connect operation, the PDN types that other described PDN types are accessed outside PDN types corresponding to timer for the delay.
The above-mentioned device for web impact factor can be used for UE, can perform all flows of method shown in Fig. 4, in fact
Existing process is identical with method above, repeats no more.
Embodiment seven
As shown in figure 9, the present embodiment provides a kind of device for web impact factor, applied to mobile management unit,
Including：
First transmitting element 91, for sending session management messages to UE, the session management messages carry delay access
Timer, and PDN types corresponding to delay access timer are indicated, so that the UE is in the delay access timer operation
The attended operation of other PDN types of Shi Zhihang, other described PDN types access PDN types corresponding to timer for the delay
Outside PDN types.
For example, the session management messages, which can be PDN connections, establishes refuse information.Wherein, described device can also include：
Second receiving unit 92, open functional entity SCEF's from packet data gateway PGW or Network ability for receiving
Establish conversational response message or establish SCEF connection response messages, it is described to establish conversational response message or establish SCEF connections
The delay access timer and its corresponding PDN types are carried in response message.In this way, the first transmitting element 91 can basis
Delay access timer and its PDN types are obtained in the message that second receiving unit 92 receives, is connected sending the PDN to UE
Delay access timer can be carried and indicate its corresponding PDN type by connecing when establishing refuse information.
Wherein, first transmitting element 91, it may also be used for send session management messages, the session management to the UE
Message is NAS, and so that the UE stops corresponding delay access timer according to the NAS, corresponding delay access is fixed
When device it is identical with the PDN types of the NAS.For example, the session management messages can be activation dedicated bearing request message.
In addition, a kind of device for web impact factor is additionally provided, applied to mobile management unit, including：
Processor and memory；The memory is used to store the program for web impact factor, and the processor is used to read institute
The program for web impact factor is stated to perform following operation：
Session management messages are sent to UE, the session management messages carry delay access timer, and indicate the delay
PDN types corresponding to timer are accessed, so that the UE performs other PDN types in the delay access timer operation
Attended operation, the PDN types that other described PDN types are accessed outside PDN types corresponding to timer for the delay.
In practical application, the first transmitting element 91 can be the combination of software, hardware or both.For example, first sends list
Member 91 can realize that said apparatus can use by configuring on mobile management unit by ballistic device, can also directly lead to
Mobile management unit is crossed to realize.
In practical application, in session management messages, (refuse information is established in such as PDN connections to above-mentioned mobile management unit；Swash
Dedicated bearing request message living) middle carry postpones access timer, and indicates that type is (e.g., corresponding to delay access timer
For IP types and/or non-IP types)；Wherein, mobile management unit can be MME in a 4 g system, can be with 3G systems
It is Serving GPRS Support Node (Serving GPRS Support Node, SGSN), can is chain of command movement in 5G systems
Management entity or chain of command session management entity.
In addition, the embodiment of the present application also provides a kind of computer-readable recording medium, computer executable instructions are stored with,
The computer executable instructions realize the web impact factor of above-described embodiment one method when being performed.
In addition, the embodiment of the present application also provides a kind of computer-readable recording medium, computer executable instructions are stored with,
The computer executable instructions realize the web impact factor of above-described embodiment two method when being performed.
Alternatively, in the present embodiment, above computer readable storage medium storing program for executing can include but is not limited to：USB flash disk, read-only deposit
Reservoir (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk,
Magnetic disc or CD etc. are various can be with the medium of store program codes.
Alternatively, in the present embodiment, processor performs above-mentioned implementation according to the program code stored in storage medium
The method and step of example.
Alternatively, the specific example in the present embodiment may be referred to described in above-described embodiment and optional embodiment
Example, the present embodiment will not be repeated here.
One of ordinary skill in the art will appreciate that all or part of step in the above method can be instructed by program
Related hardware (such as processor) is completed, and described program can be stored in computer-readable recording medium, as read-only storage,
Disk or CD etc..Alternatively, all or part of step of above-described embodiment can also be come using one or more integrated circuits
Realize.Correspondingly, each module/unit in above-described embodiment can be realized in the form of hardware, such as pass through integrated circuit
To realize its corresponding function, can also be realized in the form of software function module, such as be stored in and deposited by computing device
Program/instruction in reservoir realizes its corresponding function.The application is not restricted to the knot of the hardware and software of any particular form
Close.
The advantages of general principle and principal character and the application of the application has been shown and described above.The application is not by upper
State the limitation of embodiment, the principle for simply illustrating the application described in above-described embodiment and specification, do not depart from the application
On the premise of spirit and scope, the application also has various changes and modifications, and these changes and improvements both fall within claimed
In the range of the application.
Claims (23)
1. a kind of method of web impact factor, including：
User equipment (UE) receives the session management messages from network side, and the session management messages carry delay access timing
Device, and indicate packet data network PDN types corresponding to delay access timer；
UE starts the delay access timer, and the connection of other PDN types is performed in the delay access timer operation
Operation, the PDN types that other described PDN types are accessed outside PDN types corresponding to timer for the delay.
2. according to the method for claim 1, it is characterised in that
The PDN types include IP types and non-IP types；
The attended operation of other PDN types, including one or more following are performed in the delay access timer operation：
When the delay access timer corresponds to IP types, in the delay access timer operation, the UE performs non-IP
Type PDN attended operation；
When the delay access timer corresponds to non-IP types, in the delay access timer operation, the UE performs IP
Type PDN attended operation.
3. method according to claim 1 or 2, it is characterised in that after UE starts the delay access timer, also wrap
Include：
In the delay access timer operation, the UE does not perform PDN types corresponding to the delay access timer
Attended operation.
4. according to the method for claim 3, it is characterised in that
The PDN types include IP types and non-IP types；
Do not perform the PDN attended operations of PDN types corresponding to the delay access timer in the UE, including it is one of following or
It is multinomial：
When the delay access timer corresponds to IP types, in the delay access timer operation, the UE is to IP types
PDN connections do not perform the operation established and initiate modification；
When the delay access timer corresponds to non-IP types, in the delay access timer operation, the UE is to non-IP
Type PDN connections do not perform the operation established and initiate modification；
When the delay access timer corresponds to IP types and non-IP types, in the delay access timer operation UE pairs
All types PDN connections do not perform the operation established and initiate modification.
5. according to the method for claim 4, it is characterised in that the operation for not performing foundation and initiating modification, including：
One of following NAS or multinomial is not sent：
Request is established in PDN connections；
Resource modifying signaling.
6. according to the method described in claim 1,2,4 or 5, it is characterised in that the UE starts the delay access timer
Afterwards, in addition to：
When receiving the Non-Access Stratum signaling NAS from network side, the UE stops corresponding delay access timer, described
Corresponding delay access timer is identical with the PDN types of the NAS.
7. according to the method for claim 6, it is characterised in that receiving the Non-Access Stratum signaling NAS from network side
When, the UE stops corresponding delay access timer, including one or more following：
When the delay access timer of operation corresponds to IP types, stop the delay during NAS for receiving the PDN connections of IP types
Access timer；
When the delay access timer of operation corresponds to non-IP types, when receiving the NAS of non-IP types PDN connections described in stopping
Delay access timer；
When the delay access timer of operation corresponds to IP types and non-IP types, receive IP types or non-IP types PDN connects
Stop the delay access timer during NAS connect.
8. a kind of device for web impact factor, applied to user equipment (UE), including：
First receiving unit, for receiving the session management messages from network side, the session management messages carry delay and connect
Enter timer, and indicate packet data network PDN types corresponding to delay access timer；
Start unit, for starting the delay access timer；
Execution unit, for performing the attended operation of other PDN types in the delay access timer operation；Wherein, institute
State the PDN types that other PDN types are accessed outside PDN types corresponding to timer for the delay.
9. device according to claim 8, it is characterised in that
The PDN types include IP types and non-IP types；
The execution unit, is used for：The operation of other PDN types connection, bag are performed in the delay access timer operation
Include one or more following：
When the delay access timer corresponds to IP types, in the delay access timer operation, the UE performs non-IP
Type PDN attended operation；
When the delay access timer corresponds to non-IP types, in the delay access timer operation, the UE performs IP
Type PDN attended operation.
10. device according to claim 8 or claim 9, it is characterised in that
The execution unit, it is additionally operable to, in the delay access timer operation, not perform the delay access timer institute
The attended operation of corresponding PDN types.
11. device according to claim 8 or claim 9, it is characterised in that
First receiving unit, it is additionally operable to receive the Non-Access Stratum signaling NAS from network side；
Also include：Stop element, the NAS for being received according to first receiving unit stop corresponding delay access timing
Device, corresponding delay access timer are identical with the PDN types of the NAS.
12. device according to claim 11, it is characterised in that the stop element is used to receive list according to described first
The NAS that member receives stops corresponding delay access timer, including one or more following：
When the delay access timer of operation corresponds to IP types, the NAS that first receiving unit receives corresponds to IP types
Stop the delay access timer during PDN connections；
When the delay access timer of operation corresponds to non-IP types, the NAS that first receiving unit receives corresponds to non-IP
Stop the delay access timer during type PDN connections；
When the delay access timer of operation corresponds to IP types and non-IP types, NAS that first receiving unit receives
Stop the delay access timer when corresponding IP types or non-IP types PDN connections.
13. a kind of device for web impact factor, applied to user equipment (UE), including：Processor and memory；Its feature
It is, the memory is used to storing the program for web impact factor, and the processor, which is used to reading, described is used for network
The program of congestion control performs following operation：
The session management messages from network side are received, the session management messages carry delay access timer, and instruction should
Packet data network PDN types corresponding to delay access timer；
Start the delay access timer, the connection behaviour of other PDN types is performed in the delay access timer operation
Make, the PDN types that other described PDN types are accessed outside PDN types corresponding to timer for the delay.
14. a kind of method of web impact factor, including：
Mobile management unit sends session management messages to user equipment (UE), and the session management messages carry delay access timing
Device, and packet data network PDN types corresponding to delay access timer are indicated, so that the UE is fixed in the delay access
When device perform the attended operations of other PDN types when running, other described PDN types are accessed corresponding to timer for the delay
PDN types outside PDN types.
15. according to the method for claim 14, it is characterised in that the session management messages are that refusal is established in PDN connections
Message.
16. according to the method for claim 15, it is characterised in that before sending session management messages to UE, in addition to：
The mobile management unit receives opens functional entity SCEF's from packet data gateway PGW or Network ability
Establish conversational response message or establish SCEF connection response messages, it is described to establish conversational response message or establish SCEF connections
The delay access timer and its corresponding PDN types are carried in response message.
17. according to the method for claim 14, it is characterised in that also include：
Mobile management unit sends session management messages to the UE, and the session management messages are Non-Access Stratum signaling NAS, with
Toilet states UE and stops corresponding delay access timer, corresponding delay access timer and the NAS according to the NAS
PDN types it is identical.
18. according to the method for claim 17, it is characterised in that the session management messages are activation dedicated bearing request
Message.
19. according to the method described in any one of claim 14 to 18, it is characterised in that the mobile management unit is moving tube
Manage entity MME, Serving GPRS Support Node, chain of command mobile management entity or chain of command session management entity.
20. a kind of device for web impact factor, applied to mobile management unit, including：
First transmitting element, for sending session management messages to user equipment (UE), the session management messages carry delay and connect
Enter timer, and indicate packet data network PDN types corresponding to delay access timer, so that the UE is in the delay
The attended operation of other PDN types is performed during access timer operation, other described PDN types access timer for the delay
PDN types outside corresponding PDN types.
21. device according to claim 20, it is characterised in that
First transmitting element, it is additionally operable to send session management messages to the UE, the session management messages are non-access
Layer signaling NAS, so that the UE stops corresponding delay access timer according to the NAS, corresponding delay access is fixed
When device it is identical with the PDN types of the NAS.
22. device according to claim 20, it is characterised in that also include：
Second receiving unit, functional entity SCEF is opened from packet data gateway PGW or Network ability for receiving
Establish conversational response message or establish SCEF connection response messages, it is described to establish conversational response message or establish SCEF companies
Connect and the delay access timer and its corresponding PDN types are carried in response message.
23. a kind of device for web impact factor, applied to mobile management unit, including：Processor and memory；It is special
Sign is, the memory is used to storing the program for web impact factor, and the processor, which is used to reading, described is used for net
The program of network congestion control performs following operation：
Session management messages are sent to user equipment (UE), the session management messages carry delay access timer, and instruction should
Packet data network PDN types corresponding to delay access timer, so that the UE is in the delay access timer operation
Perform the attended operation of other PDN types, other described PDN types for the delay access PDN types corresponding to timer it
Outer PDN types.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610811585.4A CN107801206A (en) | 2016-09-06 | 2016-09-06 | The method and device of web impact factor |
| PCT/CN2017/100365 WO2018045928A1 (en) | 2016-09-06 | 2017-09-04 | Method and device for network congestion control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610811585.4A CN107801206A (en) | 2016-09-06 | 2016-09-06 | The method and device of web impact factor |
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| CN107801206A true CN107801206A (en) | 2018-03-13 |
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ID=61530117
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| CN201610811585.4A Pending CN107801206A (en) | 2016-09-06 | 2016-09-06 | The method and device of web impact factor |
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| CN (1) | CN107801206A (en) |
| WO (1) | WO2018045928A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109863784A (en) * | 2018-05-14 | 2019-06-07 | Oppo广东移动通信有限公司 | Control method, terminal device and the network equipment of network congestion |
| CN110167202A (en) * | 2019-04-26 | 2019-08-23 | 维沃移动通信有限公司 | Conversation processing method, device, terminal and medium |
| CN110662223A (en) * | 2018-06-29 | 2020-01-07 | 电信科学技术研究院有限公司 | Processing method and device of access control timer, terminal and network side equipment |
| CN110677351A (en) * | 2019-09-12 | 2020-01-10 | 南京大鱼半导体有限公司 | Method and device for congestion control of Internet of things, storage medium and electronic equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102595556B (en) * | 2012-02-29 | 2015-01-14 | 电信科学技术研究院 | Method and device for transmission control on session management request message |
| CN104704875B (en) * | 2012-10-05 | 2018-06-05 | Lg电子株式会社 | The method and apparatus for controlling multipriority in a wireless communication system |
| US9220118B1 (en) * | 2013-08-07 | 2015-12-22 | Sprint Spectrum L.P. | Method and system for establishing a default bearer in accordance with a substitute packet data policy |
| US9980310B2 (en) * | 2014-10-17 | 2018-05-22 | Mediatek Inc. | Method for processing unsuccessful PDN establishment request |
-
2016
- 2016-09-06 CN CN201610811585.4A patent/CN107801206A/en active Pending
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2017
- 2017-09-04 WO PCT/CN2017/100365 patent/WO2018045928A1/en active Application Filing
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109863784A (en) * | 2018-05-14 | 2019-06-07 | Oppo广东移动通信有限公司 | Control method, terminal device and the network equipment of network congestion |
| CN109863784B (en) * | 2018-05-14 | 2021-08-20 | Oppo广东移动通信有限公司 | Method for controlling network congestion, terminal equipment and network equipment |
| US11146983B2 (en) | 2018-05-14 | 2021-10-12 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method for controlling network congestion, terminal device and network device |
| CN110662223A (en) * | 2018-06-29 | 2020-01-07 | 电信科学技术研究院有限公司 | Processing method and device of access control timer, terminal and network side equipment |
| CN110167202A (en) * | 2019-04-26 | 2019-08-23 | 维沃移动通信有限公司 | Conversation processing method, device, terminal and medium |
| CN110677351A (en) * | 2019-09-12 | 2020-01-10 | 南京大鱼半导体有限公司 | Method and device for congestion control of Internet of things, storage medium and electronic equipment |
| CN110677351B (en) * | 2019-09-12 | 2020-07-31 | 南京大鱼半导体有限公司 | Method and device for congestion control of Internet of things, storage medium and electronic equipment |
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| WO2018045928A1 (en) | 2018-03-15 |
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