CN106792608A - Transmitting small data packets method, device and terminal - Google Patents
Transmitting small data packets method, device and terminal Download PDFInfo
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- CN106792608A CN106792608A CN201610864429.4A CN201610864429A CN106792608A CN 106792608 A CN106792608 A CN 106792608A CN 201610864429 A CN201610864429 A CN 201610864429A CN 106792608 A CN106792608 A CN 106792608A
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- small data
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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
- H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
- H04W4/185—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals by embedding added-value information into content, e.g. geo-tagging
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
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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
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
Abstract
A kind of transmitting small data packets method, device and terminal, transmitting small data packets method include：Targeting sequencing is sent to base station, to notify the ascending resource needed for the base station user terminal transmission small data packets to be transmitted；The small data packets to be transmitted are encapsulated in Msg3, the ascending resource configured using the base station is sent.Technical solution of the present invention reduces the signaling consumption of small data packets communication process, improves communication efficiency.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of transmitting small data packets method, device and terminal.
Background technology
It is negative in order to reduce terminal device energy consumption and network in Long Term Evolution (Long Term Evolution) system
Lotus, introduces discontinuous reception (Discontinuous Reception, DRX) technology.The technology causes do not have within a certain period of time
During data transfer, just user terminal (User Equipment, UE) is carried and wireless heterogeneous networks (Radio Resource
Control, RRC) connection etc. resource discharge.With mobile Internet application (for example, wechat) and the rise of Internet of Things, single
The demand of communication process transmission small data packets (small packet) is more and more.Data communication of current wireless cellular network
Process is comprised the following steps：Stochastic accessing, Radio Resource connection foundation, ciphering startup, data transmission and Connection Release.
By upper, if user terminal and base station are not added with distinguishing for the packet of all transmission, all of default bearing
Or dedicated bearer is transmitted, then a large amount of frequently small data packets will cause the carrying for just having discharged and signaling connection again
Set up, in the case where data (DATA) part of transmission is smaller, the signaling consumption that transmission small amount of data needs is very high, whole
The efficiency of individual system is very low, causes communication system efficiency low.
The content of the invention
Present invention solves the technical problem that being the signaling consumption for how reducing small data packets communication process, communication effect is improved
Rate.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of transmitting small data packets method, transmitting small data packets
Method includes：Targeting sequencing is sent to base station, it is upper needed for the base station user terminal transmission small data packets to be transmitted to notify
Row resource；The small data packets to be transmitted are encapsulated in Msg3, the ascending resource configured using the base station is sent out
Go.
Optionally, also include before transmission targeting sequencing to the base station：Business is carried out to institute's available for transmission small data packets
Differentiate, to determine the transmission target of each small data packets to be transmitted；It is same packet data network gateway by target is sent
The small data packets to be transmitted are merged.
Optionally, it is described the small data packets to be transmitted are encapsulated in Msg3 to include：It is described to be transmitted after by merging
Small data packets are encapsulated in Msg3.
Optionally, also include after transmission targeting sequencing to the base station：The key recovered in context is obtained, it is described extensive
Multiple context is stored in the user terminal.
Optionally, it is described the small data packets to be transmitted are encapsulated in Msg3 to include：Treated to described using the key
Transmission small data packets are encrypted；Small data packets described to be transmitted after by encryption are encapsulated in Msg3.
Optionally, the Temporary Mobile Subscriber Identity for pointing to the user terminal is located at the head of Msg3, so as to the base station
It is indexed to determine the user terminal and the key according to the Temporary Mobile Subscriber Identity.
Optionally, the transmitting small data packets method also includes：The small data packets that the base station sends are received by Msg4
Transmission confirms.
Optionally, user's end described in the base station is notified by different targeting sequencing code character or configuring preamble sequence resources
Ascending resource needed for the different small data packets to be transmitted of end transmission.
In order to solve the above technical problems, the embodiment of the invention also discloses a kind of transmitting small data packets device, small data packets
Transmitting device includes：Targeting sequencing transmitting element, is suitable to send targeting sequencing to base station, to notify that the base station user terminal is passed
Ascending resource needed for defeated small data packets to be transmitted；Data transmission unit, is suitable to be encapsulated in the small data packets to be transmitted
In Msg3, the ascending resource configured using the base station is sent.
Optionally, the transmitting small data packets device also includes：Discriminating unit, is suitable to enter institute's available for transmission small data packets
Industry business differentiates, to determine the transmission target of each small data packets to be transmitted；Combining unit, it is same to be suitable to target is sent
The small data packets described to be transmitted of one packet data network gateway are merged.
Optionally, the small data packets described to be transmitted after the data transmission unit is by merging are encapsulated in Msg3.
Optionally, the transmitting small data packets device also includes：Key acquiring unit, is suitable in acquisition recovery context
Key, the recovery context is stored in the user terminal.
Optionally, the data transmission unit includes：Encryption sub-unit operable, is suitable to using the key to described to be transmitted small
Packet is encrypted；Encapsulation subelement, the small data packets described to be transmitted after being suitable to encryption are encapsulated in Msg3.
Optionally, the Temporary Mobile Subscriber Identity for pointing to the user terminal is located at the head of Msg3, so as to the base station
It is indexed to determine the user terminal and the key according to the Temporary Mobile Subscriber Identity.
Optionally, the transmitting small data packets device also includes：Confirm receiving unit, be suitable to receive the base by Msg4
The transmitting small data packets that station sends confirm.
Optionally, user's end described in the base station is notified by different targeting sequencing code character or configuring preamble sequence resources
Ascending resource needed for the different small data packets to be transmitted of end transmission.
In order to solve the above technical problems, the embodiment of the invention also discloses a kind of terminal, the terminal includes the decimal
According to packet transfer device.
In order to solve the above technical problems, the embodiment of the invention also discloses another transmitting small data packets method, small data
Package transmission method includes：
In paging multiple user terminal, transmission small data packets to be transmitted, the small data packets to be transmitted are indicated to include facing
When mobile user identification；When the connection recovery request of at least one user terminal transmission is received, by the decimal to be transmitted
According to encapsulation in Msg4, and send the user terminal pointed to the Temporary Mobile Subscriber Identity.
Optionally, when the connection recovery request of at least one user terminal transmission is received, also include：Obtain on recovering
Key hereinafter, the recovery context is stored in base station.
Optionally, it is described that the small data packets to be transmitted are encapsulated in Msg4, and send to the temporarily moved subscriber
Identifying the user terminal for pointing to includes：The key and the small data packets to be transmitted are encrypted；Described in after encryption
Small data packets to be transmitted are encapsulated in Msg4, and send the user terminal pointed to the Temporary Mobile Subscriber Identity.
Optionally, when the connection recovery request of at least one user terminal transmission is received, also include：If described face
When the user terminal that points to of mobile user identification by way of cell reselection into the cell of current base station, then it is described current
The parameter of base station configuration generation key.
Optionally, it is described that the small data packets to be transmitted are encapsulated in Msg4, and send to the temporarily moved subscriber
Identifying the user terminal for pointing to includes：The parameter and the small data packets to be transmitted are encrypted；Described in after encryption
Small data packets to be transmitted are encapsulated in Msg4, and send the user terminal pointed to the Temporary Mobile Subscriber Identity.
Optionally, when multiple Physical Resource Block transmission Msg4 are needed, end of transmission mark is configured in each Resource Block.
Optionally, the user terminal that the Temporary Mobile Subscriber Identity is pointed to carries out transmitting small data packets in the following manner
Confirm：Hybrid automatic repeat-request confirms.
In order to solve the above technical problems, the embodiment of the invention also discloses another transmitting small data packets device, small data
Packet transfer device includes：
Indicating member, is suitable to, in paging multiple user terminal, indicate transmission small data packets to be transmitted, described to be transmitted small
Packet includes Temporary Mobile Subscriber Identity；Encapsulation transmitting element, is suitable to receiving the company of at least one user terminal transmission
When connecing recovery request, the small data packets to be transmitted are encapsulated in Msg4, and transmission to the Temporary Mobile Subscriber Identity refers to
To user terminal.
Optionally, the encapsulation transmitting element includes：Key obtaining sub-unit, be suitable to obtain recover context in it is close
Key, the recovery context is stored in base station.
Optionally, the encapsulation transmitting element includes：First encryption sub-unit operable, is suitable to the key and described to be transmitted
Small data packets are encrypted；First transmission sub-unit, the small data packets described to be transmitted after being suitable to encryption are encapsulated in Msg4,
And send the user terminal pointed to the Temporary Mobile Subscriber Identity.
Optionally, transmitting small data packets device also includes：Key parameter generation unit, is suitable in the temporarily moved subscriber
When the user terminal for identifying sensing enters the cell of current base station by way of cell reselection, the current base station configuration generation
The parameter of key.
Optionally, the encapsulation transmitting element includes：Second encryption sub-unit operable, is suitable to the parameter and described to be transmitted
Small data packets are encrypted；Second transmission sub-unit, the small data packets described to be transmitted after being suitable to encryption are encapsulated in Msg4,
And send the user terminal pointed to the Temporary Mobile Subscriber Identity.
Optionally, when multiple Physical Resource Block transmission msg4 are needed, the transmitting small data packets device also includes：Terminate
Mark dispensing unit, is suitable to configure end of transmission mark in each Resource Block.
Optionally, the user terminal that the Temporary Mobile Subscriber Identity is pointed to carries out transmitting small data packets in the following manner
Confirm：Hybrid automatic repeat-request confirms.
In order to solve the above technical problems, the embodiment of the invention also discloses a kind of base station, the base station includes the decimal
According to packet transfer device.
Compared with prior art, the technical scheme of the embodiment of the present invention has the advantages that：
The embodiment of the present invention sends targeting sequencing to base station first, to notify the base station user terminal transmission to be transmitted small
Ascending resource needed for packet；Then the small data packets to be transmitted are encapsulated in Msg3, are configured using the base station
The ascending resource sends.Technical solution of the present invention is encapsulated in Msg3 by by small data packets to be transmitted, so as to
When family terminal sends RRC connection request, it is possible to send small data packets to be transmitted to base station, reduce signaling consumption；Thus,
Under the scene for needing to transmit a large amount of small data packets, the signaling consumption that transmitting procedure needs be will be further reduced, and communication efficiency is carried
It is high.
Further, the transmission method of the embodiment of the present invention also includes：The key recovered in context is obtained, in the recovery
Hereafter it is stored in the user terminal；The small data packets to be transmitted are encrypted using the key；By the institute after encryption
Small data packets to be transmitted are stated to be encapsulated in Msg3.Technical solution of the present invention is by being stored in the recovery context of the user terminal
To obtain key, it is to avoid the Signalling exchange between user terminal and base station, signaling consumption is further reduced, and then further
Improve communication efficiency.
Further, the transmitting small data packets confirmation that the base station sends is received by Msg4.Technical solution of the present invention passes through
Small data packets to be transmitted are encapsulated in Msg3 and are sent, then successfully carried out to whether small data packets to be transmitted send by Msg4
Confirm, namely when completion is set up in RRC connections, the transmission of small data packets to be transmitted has been completed, and communication efficiency is obtained further
Improve.
Brief description of the drawings
Fig. 1 is a kind of flow chart of transmitting small data packets method of the embodiment of the present invention；
Fig. 2 is a kind of structural representation of transmitting small data packets device of the embodiment of the present invention；
Fig. 3 is the structural representation of embodiment of the present invention another kind transmitting small data packets device.
Specific embodiment
As described in the background art, if user terminal and base station for the packet of all transmission be not added with distinguishing, entirely
Portion is transmitted using default bearing or dedicated bearer, then a large amount of frequently small data packets will cause the carrying for just having discharged and
Signaling connection is re-established.In the case where data (DATA) part of transmission is smaller, the letter that transmission small amount of data needs
Make expense very high, the efficiency of whole system is very low, cause communication system efficiency low.
Present inventor is analyzed prior art, after UE and base station complete an access procedure, each self-insurance
Context (context) is deposited, for example connection configuration, carrying configuration, encryption key etc..Therefore eat dishes without rice or wine to use context
(context) recovered (resume) process to set up the connection between UE and base station, part signaling consumption can be reduced.
Table 1 is the signaling process of recovery process.
| ↑1 | Msg1:MAC targeting sequencings |
| ↓2 | Msg2:Accidental access response |
| ↑3 | Msg3:Connection recovery request |
| ↓4 | Msg4:Contention resolved |
| ↓5 | RRC connections recover |
| ↑6 | RRC connections recover to complete |
| ↓7 | Rlc layer state |
| 8 | DATA |
| ↓9 | RRC connections are hung up |
| ↑10 | Rlc layer state |
Table 1
In table 1, the arrow before step represents transmission direction, and upward arrow represents up, and downward arrow represents descending.
As shown in table 1, in step 1, UE is by the targeting sequencing of media access control layer (Media Access Control, MAC)
(Preamble) it is encapsulated in signaling Msg1 (Message1), and sends to base station；In step 2, base station passes through signaling Msg2
Accidental access response (Random Access Response) is sent to UE；In step 3, UE is sent out by signaling Msg3 to base station
RRC is sent to connect recovery request (Connection Resume Request)；In step 4, base station is sent out by signaling Msg4 to UE
Send contention resolved (Contention Resolution)；In steps of 5, base station sends connection and recovers to UE；In step 6, UE
Connection is sent to base station to recover to complete；In step 7, base station to UE send wireless spread-spectrum technology (Radio Link Control,
RLC) layer state；In step 8, data are transmitted between UE and base station；In step 9, base station sends RRC connections and hangs up to UE；
In step 10, UE sends rlc layer state to base station.
But, for small data packets, if transmitted by above-mentioned recovery process, efficiency of transmission is still than relatively low.Moreover,
If context obtains failure, for example, UE did cell reselection (Cell reselection), new base station (Base
Station, BS) there is no X2 interface to connect and old base station between, then new base station needs to be connected in wireless heterogeneous networks recovers
Notify that UE, UE can transfer to do RRC connection request, signaling in (Radio Resource Control Connection resume)
Expense is still very big.
It is understandable to enable the above objects, features and advantages of the present invention to become apparent, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.
Fig. 1 is a kind of flow chart of transmitting small data packets method of the embodiment of the present invention.
Transmitting small data packets method shown in Fig. 1 can apply to user terminal, and the transmitting small data packets method can be with
Comprise the following steps：
Step S101：Targeting sequencing is sent to base station, to notify the base station user terminal transmission small data packets to be transmitted
Required ascending resource；
Step S102：The small data packets to be transmitted are encapsulated in Msg3, using the base station configure it is described up
Resource sends.
In the present embodiment, the random access procedure based on competition includes 4 signalings：Msg1, Msg2, Msg3 and Msg4.Its
In, the UE that Msg1 is used to be in Idle state is attached process, initiates Stochastic accessing；Msg2 is detecting Msg1 for base station
Afterwards, accidental access response message is sent to UE；Msg3 is used for UE after accidental access response message is received, and is sent to base station
RRC connection request；Msg4 is used for base station and sets up message to UE transmission RRC connections.
Small data packets alleged by the embodiment of the present invention can be data volume less than the packet of pre-determined threshold or by deep packet
The packet that detection (Deep Packet Inspection, DPI) can recognize that.It is understood that the pre-determined threshold can
Custom-configured with according to actual application scenarios, the embodiment of the present invention is without limitation.
In specific implementation, in step S101, user terminal sends targeting sequencing to base station.Base is notified by targeting sequencing
Ascending resource needed for its transmission small data packets to be transmitted of standing.Specifically, user terminal can be by different targeting sequencings
Code character or the leader sequence resources of configuration are notified needed for the different small data packets to be transmitted of user terminal transmission described in the base station
Ascending resource.Furthermore, the corresponding cell in each base station includes 64 targeting sequencing code characters；User terminal can be in difference
Targeting sequencing code character in indicate the ascending resource needed for different small data packets to be transmitted.Base station can also allocate resources to
Targeting sequencing so that user terminal indicated using different leader sequence resources it is upper needed for different small data packets to be transmitted
Row resource.
In specific implementation, the targeting sequencing that base station can send according to user terminal is each small data packets distribution to be transmitted
Ascending resource.Therefore in step s 102, be encapsulated in the small data packets to be transmitted in Msg3 by user terminal, uses the base station
The ascending resource of configuration is sent to base station.That is, user terminal is sending RRC connection request using signaling Msg3 to base station
When, small data packets to be transmitted are sent to base station in the lump, reduce signaling consumption；Thus, needing to transmit a large amount of small data packets
Scene under, transmitting procedure need signaling consumption will be further reduced, communication efficiency improve.
In specific implementation, user terminal can carry out business discriminating to institute's available for transmission small data packets, to determine each institute
State the transmission target of small data packets to be transmitted；It is same packet data network gateway (Packet Data Network that target will be sent
Gateway, P-GW) small data packets described to be transmitted merge.Then by merging after small data described to be transmitted encapsulating
In Msg3.Specifically, the small data packets to be transmitted that the time difference is in setting time length can be merged.More
Furthermore, rrc layer transmission is given after small data packets to be transmitted being loaded into Msg3, rrc layer is responsible for small data packets to be transmitted
Base station is sent to, the process is repeated if encapsulation or bust this.The embodiment of the present invention is to be passed by that will send target identical
Defeated small data packets are merged, so that the data volume increase of single transmission, and then multiple small datas to be transmitted can be realized
Bag shares signaling, further reduces signaling consumption.
In specific implementation, the key recovered in context can be obtained, the recovery context is stored in user's end
End.That is, after UE and base station complete an access procedure, each save recovery context, recovering context can be with
Including connection configuration, carry configuration and encryption key.So, when needing to encrypt small bag data to be transmitted, user terminal need not
Signaling is sent to base station to obtain key, but directly obtained from context is recovered, further reduce signaling consumption.
It should be noted that because key and base station are one-to-one, that is to say, that for different base stations, its is close
Key is variant.And the generation parameter of key is initiated in base station end, thus it is close in the recovery context of user terminal preservation
Key needs the key agreement recovered in context preserved with base station.Therefore, in embodiments of the present invention alleged base station refer to
User terminal carried out the base station of data transfer, for example, being transmitted across Non-Access Stratum (Non-Access Stratum) signaling or use
User data；And the recovery context that base station each preserves with user terminal is the base station upper and lower with the user terminal connection procedure
Text, to ensure that the key for obtaining can use.
In specific implementation, after key is got, the small data packets to be transmitted are encrypted using the key；Will
Small data packets described to be transmitted after encryption are encapsulated in Msg3.
In specific implementation, when base station receives the Msg3 of encapsulation available for transmission small data packets, will send small by Msg4
Packet transmission confirms (ACKnowledge, ACK).When base station is not properly received the Msg3 of encapsulation available for transmission small data packets,
Transmitting small data packets negative response (Negative ACKnowledgment, NACK) will be sent by Msg4.
In specific implementation, Temporary Mobile Subscriber Identity (the Serving Temporary of the user terminal are pointed to
Mobile Subscriber Identity, S-TMSI) head (header) of Msg3 is located at, so that the base station is according to
Temporary Mobile Subscriber Identity is indexed to determine the user terminal and the key.Specifically, in actual applications, may
Can there are multiple user terminals and send signaling Msg3 to base station；And the head of signaling Msg3 is not encrypted, S-TMSI is placed on
The head of Msg3, can cause base station after multiple Msg3 are received, and can determine what is carried out data transmission according to S-TMSI
User terminal and correct Msg3；And then after according to S-TMSI indexes obtaining key, the Msg3 is decrypted, get to be passed
Defeated small data packets.
Can be with understanding, if do not crossed after the resident corresponding cell in base station of user terminal doing data transfer, then use
The non-saving/restoring context of family terminal and base station, user terminal just cannot be using the transmitting small data packets method of the embodiment of the present invention
Carry out recovery flow, and then the transmission of small data packets can not be carried out using the transmitting small data packets method of the embodiment of the present invention, this
When, user terminal will transmit small data packets using the transmitting small data packets method of prior art.
Table 2 is the signaling process of the transmitting small data packets of the embodiment of the present invention.
Table 2
In table 2, the arrow before step represents transmission direction, and upward arrow represents up, and downward arrow represents descending.
As shown in table 2, in step sl, be encapsulated in MAC targeting sequencings in signaling Msg1 by UE, and sends to base station；Specifically, it is leading
Sequence can include random access radio network temporary mark (Random Access Radio Network Temporary
Identity, RA-RNTI) and targeting sequencing mark (Preamble Identity, Preamble ID).Wherein, before different
Ascending resource needed for leading sequence identifier and can indicating different small data packets to be transmitted, RA-RNTI and targeting sequencing mark one
One correspondence, identifies as accessing, to reach the purpose that identifying user terminal avoids conflict.In step s 2, base station passes through signaling
Msg2 sends accidental access response to UE.Meanwhile, base station carries out uplink scheduling authorization according to targeting sequencing mark, also as to be passed
Ascending resource needed for defeated small data packets distributes corresponding running time-frequency resource.In step s3, UE is sent out by signaling Msg3 to base station
RRC is sent to connect recovery request；Meanwhile, S-TMSI and institute's available for transmission small data packets are also packaged with Msg3.Due to that may deposit
Random access request is initiated with same targeting sequencing in same resource (namely running time-frequency resource) in multi-section user terminal, therefore can
Energy multi-section user terminal receives Msg2 and sends Msg3, and the content of encapsulation is different in Msg3.Therefore in step s 4, base station root
Msg3 is correctly decoded according to S-TMSI and replys Msg4, represent Conflict solving and release, namely the transmitting procedure of small data packets terminates.
Wherein, S-TMSI and data validation (DATA ACK) are packaged with Msg4.Multi-section user terminal can be according to encapsulation in Msg4
S-TMSI recognises that the Msg3 of Successful transmissions oneself.
Fig. 2 is a kind of structural representation of transmitting small data packets device of the embodiment of the present invention.
Transmitting small data packets device 20 shown in Fig. 2 can be used for user terminal, and transmitting small data packets device 20 can be wrapped
Include targeting sequencing transmitting element 201 and data transmission unit 202.
Wherein, targeting sequencing transmitting element 201 is suitable to send targeting sequencing to base station, to notify the base station user terminal
Ascending resource needed for transmitting small data packets to be transmitted；
Data transmission unit 202 is suitable to be encapsulated in the small data packets to be transmitted in Msg3, is configured using the base station
The ascending resource send.
In specific implementation, the Temporary Mobile Subscriber Identity for pointing to the user terminal is located at the head of Msg3, so as to described
Base station is indexed to determine the user terminal and the key according to the Temporary Mobile Subscriber Identity.
In specific implementation, user terminal can notify institute by different targeting sequencing code characters or configuring preamble sequence resources
State the ascending resource needed for user terminal described in base station transmits different small data packets to be transmitted.
The specific embodiment of the embodiment of the present invention can refer to the embodiment of the transmitting small data packets method shown in Fig. 1, this
Place repeats no more.
Fig. 3 is the structural representation of embodiment of the present invention another kind transmitting small data packets device.
Transmitting small data packets device 30 shown in Fig. 3 is one of the transmitting small data packets device 20 shown in Fig. 2 specific real
Apply mode.
Transmitting small data packets device 30 can include：Discriminating unit 301, combining unit 302, targeting sequencing transmitting element
303rd, key acquiring unit 304, data transmission unit 305 and confirmation receiving unit 306；Data transmission unit 305 can include
Encryption sub-unit operable 3051 and encapsulation subelement 3052.
Wherein, discriminating unit 301 is suitable to carry out business discriminating to institute's available for transmission small data packets, to determine each described treat
Transmit the transmission target of small data packets；It is to be treated described in same packet data network gateway that combining unit 302 is suitable to target is sent
Transmission small data packets are merged.Targeting sequencing transmitting element 303 is suitable to send targeting sequencing to base station, to notify the base station
Ascending resource needed for user terminal transmission small data packets to be transmitted.Data transmission unit 305 by merging after it is described to be transmitted
Small data packets are encapsulated in Msg3, and are sent.Specifically, key acquiring unit 304 is suitable in acquisition recovery context
Key, the recovery context is stored in the user terminal.So, encryption sub-unit operable 3051 is suitable to using the key to institute
Small data packets to be transmitted are stated to be encrypted；Small data packets described to be transmitted after encapsulation subelement 3052 is suitable to encryption are encapsulated in
In Msg3.Confirm that receiving unit 306 is suitable to receive the transmitting small data packets confirmation that the base station sends by Msg4.
The specific embodiment of the embodiment of the present invention can refer to the transmitting small data packets method shown in Fig. 1, and shown in Fig. 2
Transmitting small data packets device 20 embodiment, here is omitted.
The embodiment of the invention also discloses a kind of terminal, the terminal can include the transmitting small data packets dress shown in Fig. 3
Put the transmitting small data packets device 20 shown in 30 or Fig. 2.The terminal can include but is not limited to mobile phone, PAD, computer.
The embodiment of the invention also discloses another transmitting small data packets method, the data for descending small data packets are passed
Defeated, the method can apply to base station side.
The transmitting small data packets method of the present embodiment may comprise steps of：In paging multiple user terminal, indicate
Small data packets to be transmitted are transmitted, the small data packets to be transmitted include Temporary Mobile Subscriber Identity；Receiving at least one use
During the connection recovery request that family terminal sends, the small data packets to be transmitted are encapsulated in Msg4, and sent to described interim
The user terminal that mobile user identification is pointed to.
Table 3 is the signaling process of the transmitting small data packets of the embodiment of the present invention.
Table 3
In table 3, the arrow before step represents transmission direction, and upward arrow represents up, and downward arrow represents descending.
Table 3 is refer to, in step s 11, RRC pagings are initiated in base station to multiple UE.Specifically, base station can also in the paging carry S-
TMSI, to indicate the target terminal user of small data packets to be transmitted.In step s 12, MAC targeting sequencings are encapsulated in signaling by UE
In Msg1, and send to base station.In step s 13, base station sends accidental access response by signaling Msg2 to UE.In step
In S14, UE sends RRC and connects recovery request by signaling Msg3 to base station；Meanwhile, S-TMSI is also packaged with Msg3.Base
The small data packets business stood after Msg3 is received according to the UE of S-TMSI sensings in S-TMSI correspondences.In step S15, base
To stand be encapsulated into Msg4 by small data packets to be transmitted and give bottom and send, rrc layer is responsible for for small data packets to be transmitted being sent to UE, if
Unsuccessfully repeat the process.In step s 16, UE can ask (Hybrid Auto Repeat by down mixing self-retransmission
Request, HARQ) do data validation (DATA ACKnowledge, DATA ACK).
Specifically, in step S15, base station, can be by being stored in when being encrypted to small data packets to be transmitted
Encryption key is obtained in the recovery context of the base station.If the base station does not preserve recovery context (namely the UE without the UE
The corresponding cell in the base station is entered by cell reselection), then the base station is by small data packets to be transmitted and loads Msg4, meanwhile,
Also need to be transmitted in Msg4 the parameter of generation encryption key.Specifically, the parameter of generation encryption key can be placed on
The head (header) of Msg4.
Specifically, the head (header) in Msg4 carries S-TMSI to complete contention resolved.Msg4 includes multiple money
During source block, in all Resource Block plus termination instruction identify, with indicate the small data packets to be transmitted whether the end of transmission.
It is understood that the transmitting small data packets method of the embodiment of the present invention is used for the recovery stream of user terminal and base station
Journey.If recovering context obtains failure, then base station notifies UE in Msg4, so as to according to the transmitting small data packets of prior art
Method completes the transmission of small data packets.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can
Completed with instructing the hardware of correlation by program, the program can be stored in computer-readable recording medium, to store
Medium can include：ROM, RAM, disk or CD etc..
Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art, are not departing from this
In the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
The scope of restriction is defined.
Claims (17)
1. a kind of transmitting small data packets method, it is characterised in that including：
Targeting sequencing is sent to base station, to notify the up money needed for the base station user terminal transmission small data packets to be transmitted
Source；
The small data packets to be transmitted are encapsulated in Msg3, the ascending resource configured using the base station is sent.
2. transmitting small data packets method according to claim 1, it is characterised in that the transmission targeting sequencing to base station it
It is preceding also to include：
Business discriminating is carried out to institute's available for transmission small data packets, to determine the transmission target of each small data packets to be transmitted；
The small data packets described to be transmitted that target is same packet data network gateway will be sent to merge.
3. transmitting small data packets method according to claim 2, it is characterised in that described by the small data packets to be transmitted
Being encapsulated in Msg3 includes：
Small data packets described to be transmitted after by merging are encapsulated in Msg3.
4. transmitting small data packets method according to claim 1, it is characterised in that the transmission targeting sequencing to base station it
Also include afterwards：
The key recovered in context is obtained, the recovery context is stored in the user terminal.
5. transmitting small data packets method according to claim 4, it is characterised in that described by the small data packets to be transmitted
Being encapsulated in Msg3 includes：
The small data packets to be transmitted are encrypted using the key；
Small data packets described to be transmitted after by encryption are encapsulated in Msg3.
6. transmitting small data packets method according to claim 4, it is characterised in that point to the interim shifting of the user terminal
Head of the family mark positioned at Msg3 is employed, so that the base station is indexed to determine according to the Temporary Mobile Subscriber Identity
State user terminal and the key.
7. transmitting small data packets method according to claim 4, it is characterised in that also include：
The transmitting small data packets confirmation that the base station sends is received by Msg4.
8. transmitting small data packets method according to claim 1, it is characterised in that by different targeting sequencing code character or
Configuring preamble sequence resources notify the ascending resource needed for the different small data packets to be transmitted of user terminal transmission described in the base station.
9. a kind of transmitting small data packets device, it is characterised in that including：
Targeting sequencing transmitting element, is suitable to send targeting sequencing to base station, to notify the base station user terminal transmission to be transmitted
Ascending resource needed for small data packets；
Data transmission unit, is suitable to be encapsulated in the small data packets to be transmitted in Msg3, configured using the base station described in
Ascending resource sends.
10. transmitting small data packets device according to claim 9, it is characterised in that also include：
Discriminating unit, is suitable to carry out business discriminating to institute's available for transmission small data packets, to determine each small data to be transmitted
The transmission target of bag；
Combining unit, it is that the small data packets described to be transmitted of same packet data network gateway are merged to be suitable to that target will be sent.
11. transmitting small data packets devices according to claim 10, it is characterised in that the data transmission unit will merge
Small data packets described to be transmitted afterwards are encapsulated in Msg3.
12. transmitting small data packets devices according to claim 9, it is characterised in that also include：
Key acquiring unit, is suitable to obtain the key recovered in context, and the recovery context is stored in the user terminal.
13. transmitting small data packets devices according to claim 12, it is characterised in that the data transmission unit includes：
Encryption sub-unit operable, is suitable to be encrypted the small data packets to be transmitted using the key；
Encapsulation subelement, the small data packets described to be transmitted after being suitable to encryption are encapsulated in Msg3.
14. transmitting small data packets devices according to claim 12, it is characterised in that point to the interim of the user terminal
Mobile user identification is located at the head of Msg3, is indexed to determine according to the Temporary Mobile Subscriber Identity so as to the base station
The user terminal and the key.
15. transmitting small data packets devices according to claim 12, it is characterised in that also include：
Confirm receiving unit, be suitable to receive the transmitting small data packets confirmation that the base station sends by Msg4.
16. transmitting small data packets devices according to claim 9, it is characterised in that by different targeting sequencing code characters
Or configuring preamble sequence resources notify the up money described in the base station needed for the different small data packets to be transmitted of user terminal transmission
Source.
17. a kind of terminals, it is characterised in that including the transmitting small data packets device as described in any one of claim 9 to 16.
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| CN201610864429.4A CN106792608B (en) | 2016-09-29 | 2016-09-29 | Transmitting small data packets method, apparatus and terminal |
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