CN106792608B - Transmitting small data packets method, apparatus and terminal - Google Patents
Transmitting small data packets method, apparatus and terminal Download PDFInfo
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- CN106792608B CN106792608B CN201610864429.4A CN201610864429A CN106792608B CN 106792608 B CN106792608 B CN 106792608B CN 201610864429 A CN201610864429 A CN 201610864429A CN 106792608 B CN106792608 B CN 106792608B
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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
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Abstract
A kind of transmitting small data packets method, apparatus and terminal, transmitting small data packets method include：Leader sequence is sent to base station, with ascending resource needed for notifying the base station user terminal transmission small data packets to be transmitted；The small data packets to be transmitted are encapsulated in Msg3, are sent using the ascending resource that the base station configures.Technical solution of the present invention reduces the signaling overheads 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, apparatus and terminal.
Background technique
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 not having within a certain period of time
When data are transmitted, just by user terminal (User Equipment, UE) carrying and wireless heterogeneous networks (Radio Resource
Control, RRC) connection etc. resources discharge.With mobile Internet application (for example, wechat) and the rise of Internet of Things, single
The demand that communication process transmits small data packets (small packet) is more and more.Data communication of current wireless cellular network
Process includes the following steps：Random access, radio resource connection foundation, ciphering startup, data transmission and Connection Release.
By upper, if differentiation is not added for the data packet of all transmission in user terminal and base station, all of default bearing
Or dedicated bearer is transmitted, then a large amount of frequent small data packets will lead to the carrying just discharged and signaling connection again
It establishes, in the case where part data (DATA) of transmission is smaller, the signaling overheads that transmission small amount of data needs is very high, whole
The efficiency of a system is very low, causes communication system efficiency low.
Summary of the invention
Present invention solves the technical problem that being how to reduce the signaling overheads of 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：Transmission leader sequence is upper needed for the base station user terminal transmission small data packets to be transmitted to notify to base station
Row resource；The small data packets to be transmitted are encapsulated in Msg3, are sent out using the ascending resource that the base station configures
It goes.
Optionally, further include before the transmission leader sequence to base station：Business is carried out to institute's available for transmission small data packets
Identify, with the transmission target of each small data packets to be transmitted of determination；It is same packet data network gateway that target, which will be sent,
The small data packets to be transmitted merge.
Optionally, the described small data packets to be transmitted are encapsulated in Msg3 includes：It will be described to be transmitted after merging
Small data packets are encapsulated in Msg3.
Optionally, further include after the transmission leader sequence to base station：The key restored in context is obtained, it is described extensive
Multiple context is stored in the user terminal.
Optionally, the described small data packets to be transmitted are encapsulated in Msg3 includes：Using described in the key pair to
Transmission small data packets are encrypted；The encrypted small data packets to be transmitted are encapsulated in Msg3.
Optionally, the Temporary Mobile Subscriber Identity for being directed toward the user terminal is located at the head of Msg3, so as to the base station
It is indexed according to the Temporary Mobile Subscriber Identity with the determination user terminal and the key.
Optionally, the transmitting small data packets method further includes：The small data packets that the base station issues are received by Msg4
Transmission confirmation.
Optionally, notify that user described in the base station is whole by different leader sequence 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：Leader sequence transmission unit is suitable for sending leader sequence to base station, to notify the base station user terminal to pass
Ascending resource needed for defeated small data packets to be transmitted；Data transmission unit, suitable for being encapsulated in the small data packets to be transmitted
In Msg3, sent using the ascending resource that the base station configures.
Optionally, the transmitting small data packets device further includes：Discriminating unit, be suitable for institute's available for transmission small data packets into
Industry business identifies, with the transmission target of each small data packets to be transmitted of determination；Combining unit, it is same that target will be sent by, which being suitable for,
The small data packets to be transmitted of one packet data network gateway merge.
Optionally, the small data packets to be transmitted after merging are encapsulated in Msg3 by the data transmission unit.
Optionally, the transmitting small data packets device further includes：Key acquiring unit is restored in context suitable for obtaining
Key, the recovery context are stored in the user terminal.
Optionally, the data transmission unit includes：Encryption sub-unit operable is suitable for using to be transmitted small described in the key pair
Data packet is encrypted；Subelement is encapsulated, suitable for the encrypted small data packets to be transmitted are encapsulated in Msg3.
Optionally, the Temporary Mobile Subscriber Identity for being directed toward the user terminal is located at the head of Msg3, so as to the base station
It is indexed according to the Temporary Mobile Subscriber Identity with the determination user terminal and the key.
Optionally, the transmitting small data packets device further includes：Receiving unit is confirmed, suitable for receiving the base by Msg4
The transmitting small data packets issued of standing confirm.
Optionally, notify that user described in the base station is whole by different leader sequence 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 terminal includes the decimal the embodiment of the invention also discloses a kind of terminal
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：
When paging multiple user terminals, small data packets to be transmitted are transmitted in instruction, and the small data packets to be transmitted include facing
When mobile user identification；When receiving the connection recovery request of at least one user terminal transmission, by the decimal to be transmitted
According to encapsulation in Msg4, and it is sent to the user terminal that the Temporary Mobile Subscriber Identity is directed toward.
Optionally, when receiving the connection recovery request of at least one user terminal transmission, further include：It obtains on restoring
Key hereinafter, the recovery context are stored in base station.
Optionally, described that the small data packets to be transmitted are encapsulated in Msg4, and it is sent to the temporarily moved subscriber
Identifying the user terminal being directed toward includes：The key and the small data packets to be transmitted are encrypted；It will be encrypted described
Small data packets to be transmitted are encapsulated in Msg4, and are sent to the user terminal that the Temporary Mobile Subscriber Identity is directed toward.
Optionally, when receiving the connection recovery request of at least one user terminal transmission, further include：If described face
When the user terminal that is directed toward of mobile user identification enter the cell of current base station by way of cell reselection, then described current
Base station configuration generates the parameter of key.
Optionally, described that the small data packets to be transmitted are encapsulated in Msg4, and it is sent to the temporarily moved subscriber
Identifying the user terminal being directed toward includes：The parameter and the small data packets to be transmitted are encrypted；It will be encrypted described
Small data packets to be transmitted are encapsulated in Msg4, and are sent to the user terminal that the Temporary Mobile Subscriber Identity is directed toward.
Optionally, when needing multiple Physical Resource Block transmission Msg4, end of transmission mark is configured in each resource block.
Optionally, the user terminal that the Temporary Mobile Subscriber Identity is directed toward carries out transmitting small data packets in the following manner
Confirmation：Hybrid automatic repeat-request confirmation.
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 unit is suitable for when paging multiple user terminals, and small data packets to be transmitted are transmitted in instruction, described to be transmitted small
Data packet includes Temporary Mobile Subscriber Identity；Transmission unit is encapsulated, suitable in the company for receiving the transmission of at least one user terminal
When connecing recovery request, the small data packets to be transmitted are encapsulated in Msg4, and is sent to the Temporary Mobile Subscriber Identity and refers to
To user terminal.
Optionally, the encapsulation transmission unit includes：Key obtaining sub-unit restores close in context suitable for obtaining
Key, the recovery context are stored in base station.
Optionally, the encapsulation transmission unit includes：First encryption sub-unit operable is suitable for the key and described to be transmitted
Small data packets are encrypted；First transmission sub-unit, suitable for the encrypted small data packets to be transmitted are encapsulated in Msg4,
And it is sent to the user terminal that the Temporary Mobile Subscriber Identity is directed toward.
Optionally, transmitting small data packets device further includes：Key parameter generation unit is suitable in the temporarily moved subscriber
When the user terminal that mark is directed toward enters the cell of current base station by way of cell reselection, the current base station configuration is generated
The parameter of key.
Optionally, the encapsulation transmission unit includes：Second encryption sub-unit operable is suitable for the parameter and described to be transmitted
Small data packets are encrypted；Second transmission sub-unit, suitable for the encrypted small data packets to be transmitted are encapsulated in Msg4,
And it is sent to the user terminal that the Temporary Mobile Subscriber Identity is directed toward.
Optionally, when needing multiple Physical Resource Block transmission msg4, the transmitting small data packets device further includes：Terminate
Configuration unit is identified, is suitable for configuring end of transmission mark in each resource block.
Optionally, the user terminal that the Temporary Mobile Subscriber Identity is directed toward carries out transmitting small data packets in the following manner
Confirmation：Hybrid automatic repeat-request confirmation.
In order to solve the above technical problems, the base station includes the decimal the embodiment of the invention also discloses a kind of base station
According to packet transfer device.
Compared with prior art, the technical solution of the embodiment of the present invention has the advantages that：
The embodiment of the present invention sends leader sequence to base station, to notify the base station user terminal transmission to be transmitted small first
Ascending resource needed for data packet；Then the small data packets to be transmitted are encapsulated in Msg3, are configured using the base station
The ascending resource is sent.Technical solution of the present invention by the way that small data packets to be transmitted are encapsulated in Msg3, thus with
When family terminal sends RRC connection request, so that it may small data packets to be transmitted are sent to base station, reduce signaling overheads；As a result,
Under the scene for needing to transmit a large amount of small data packets, the signaling overheads that transmission process needs be will be further reduced, and communication efficiency mentions
It is high.
Further, the transmission method of the embodiment of the present invention further includes：The key restored in context is obtained, in the recovery
Hereafter it is stored in the user terminal；It is encrypted using small data packets to be transmitted described in the key pair；By encrypted institute
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
Key is obtained, avoids the Signalling exchange between user terminal and base station, further reduces signaling overheads, and then further
Improve communication efficiency.
Further, the transmitting small data packets that the base station issues are received by Msg4 to confirm.Technical solution of the present invention passes through
Small data packets to be transmitted are encapsulated in Msg3 and are sent, are then successfully carried out by Msg4 to whether small data packets to be transmitted send
Confirmation, namely when completion is established in RRC connection, the transmission of small data packets to be transmitted has been completed, and communication efficiency obtains further
It improves.
Detailed description of the invention
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 schematic diagram of transmitting small data packets device of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of another kind transmitting small data packets device of the embodiment of the present invention.
Specific embodiment
As described in the background art, if user terminal and base station for the data packets of all transmission differentiation is not added, entirely
Portion is transmitted using default bearing or dedicated bearer, then a large amount of frequent small data packets will lead to the carrying just discharged and
Signaling connection re-establishes.In the case where part data (DATA) of transmission is smaller, the letter of transmission small amount of data needs
Enable expense very high, the efficiency of whole system is very low, causes communication system efficiency low.
Present inventor analyzes the prior art, after UE and base station complete an access procedure, each self-insurance
It has deposited context (context), such as connection configuration, carrying configuration, encryption key etc..Therefore it eats dishes without rice or wine using context
(context) restored (resume) process to establish the connection between UE and base station, can reduce part signaling overheads.
Table 1 is the signaling process of recovery process.
| ↑1 | Msg1:MAC leader sequence |
| ↓2 | Msg2:Random access response |
| ↑3 | Msg3:Connect recovery request |
| ↓4 | Msg4:Contention resolved |
| ↓5 | RRC connection restores |
| ↑6 | RRC connection restores to complete |
| ↓7 | Rlc layer state |
| 8 | DATA |
| ↓9 | RRC connection is hung up |
| ↑10 | Rlc layer state |
Table 1
In table 1, the arrow before step indicates transmission direction, and upward arrow indicates uplink, and downward arrow indicates downlink.
As shown in table 1, in step 1, UE is by the leader sequence of media access control layer (Media Access Control, MAC)
(Preamble) it is encapsulated in signaling Msg1 (Message1), and is sent to base station；In step 2, base station passes through signaling Msg2
Random access response (Random Access Response) is sent to UE；In step 3, UE is sent out by signaling Msg3 to base station
Send RRC connection 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 to UE and restores；In step 6, UE
Connection is sent to base station to restore 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 connection to UE and hangs up；
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 relatively low.Moreover
If context obtains failure, for example, UE was cell reselection (Cell reselection), new base station (Base
Station, BS) and old base station between there is no X2 interface connection, then new base station needs to connect in wireless heterogeneous networks and restore
Notify UE, UE that can transfer to do RRC connection request, signaling in (Radio Resource Control Connection resume)
Expense is still very big.
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing 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 be applied to user terminal, and the transmitting small data packets method can be with
Include the following steps：
Step S101：Leader sequence 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, the uplink configured using the base station
Resource is sent.
In the present embodiment, random access procedure competition-based 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 random access；Msg2 is detecting Msg1 for base station
Afterwards, accidental access response message is sent to UE；Msg3 after receiving accidental access response message, is sent for UE to base station
RRC connection request；Msg4 sends RRC connection to UE for base station and establishes message.
Small data packets alleged by the embodiment of the present invention can be data packet of the data volume less than pre-determined threshold or pass through deep packet
The data packet that detection (Deep Packet Inspection, DPI) can recognize that.It is understood that the pre-determined threshold can
To be custom-configured according to actual application scenarios, the embodiment of the present invention is without limitation.
In specific implementation, in step s101, user terminal sends leader sequence to base station.Base is notified by leader sequence
Stand its transmit small data packets to be transmitted needed for ascending resource.Specifically, user terminal can pass through different leader sequences
Code character or the leader sequence resources of configuration notify needed for the different small data packets to be transmitted of the transmission of user terminal described in the base station
Ascending resource.Furthermore, the corresponding cell in each base station includes 64 leader sequence code characters；User terminal can be in difference
Leader sequence code character in come ascending resource needed for indicating different small data packets to be transmitted.Base station can also allocate resources to
Leader sequence 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 leader sequence that base station can be sent according to user terminal is that each small data packets to be transmitted are distributed
Ascending resource.Therefore in step s 102, the small data packets to be transmitted are encapsulated in Msg3 by user terminal, use the base station
The ascending resource of configuration is sent to base station.That is, user terminal is sending RRC connection request to base station using signaling Msg3
When, small data packets to be transmitted are sent to base station together, reduce signaling overheads；Needing to transmit a large amount of small data packets as a result,
Scene under, transmission process need signaling overheads will be further reduced, communication efficiency improve.
In specific implementation, user terminal can carry out business identification to institute's available for transmission small data packets, with each institute of determination
State the transmission target of small data packets to be transmitted；It is same packet data network gateway (Packet Data Network that target, which will be sent,
Gateway, P-GW) the small data packets to be transmitted merge.Then the small data to be transmitted after merging is encapsulated
In Msg3.Specifically, the small data packets to be transmitted that the time difference is in setting time length can be merged.More
Furthermore, small data packets to be transmitted are packed into after Msg3 and give rrc layer transmission, rrc layer is responsible for small data packets to be transmitted
It is transmitted to base station, repeats the process if encapsulation or transmission failure.The embodiment of the present invention is identical to be passed by that will send target
Defeated small data packets merge, so that the data volume of single transmission increases, and then multiple small datas to be transmitted may be implemented
It wraps and shares signaling, further reduce signaling overheads.
In specific implementation, the available key restored in context, it is whole that the recovery context is stored in the user
End.That is, respectively save recovery context after an access procedure is completed in UE and base station, restoring context can be with
Including connection configuration, carrying 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 further reduces signaling overheads from restoring to obtain in context.
It should be noted that since key with base station is one-to-one, that is to say, that close for different base stations
Key is variant.And the generation parameter of key is to initiate in base station end, therefore restoring for user terminal preservation is close in context
Key needs the key agreement restored in context saved with base station.Therefore, in embodiments of the present invention alleged base station refer to
User terminal carried out the base station of data transmission, for example, being transmitted across Non-Access Stratum (Non-Access Stratum) signaling or use
User data；And base station and user terminal respectively save restore context be the base station and the user terminal connection procedure up and down
Text, it is available with the key for ensuring to obtain.
In specific implementation, after getting key, encrypted using small data packets to be transmitted described in the key pair；It will
The encrypted small data packets to be transmitted are encapsulated in Msg3.
In specific implementation, when base station receives the Msg3 of encapsulation available for transmission small data packets, it will be sent by Msg4 small
Data packet transmission confirmation (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, it is directed toward Temporary Mobile Subscriber Identity (the Serving Temporary of the user terminal
Mobile Subscriber Identity, S-TMSI) it is located at the head (header) of Msg3, so that the base station is according to
Temporary Mobile Subscriber Identity is indexed with the determination user terminal and the key.Specifically, in practical applications, may
There can be multiple user terminals and send signaling Msg3 to base station；And the head of signaling Msg3 does not encrypt, and S-TMSI is placed on
The head of Msg3 can make base station after receiving multiple Msg3, can be carried out data transmission according to S-TMSI determination
User terminal and correct Msg3；And then after obtaining key according to S-TMSI index, which is decrypted, is got to be passed
Defeated small data packets.
Understanding can be used, if user terminal, which is resident after the corresponding cell in base station not crossing, did data transmission, is used
The non-saving/restoring context of family terminal and base station, user terminal can not just use the transmitting small data packets method of the embodiment of the present invention
Recovery process is carried out, and then the transmission of small data packets cannot 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 the 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 indicates transmission direction, and upward arrow indicates uplink, and downward arrow indicates downlink.
As shown in table 2, in step sl, MAC leader sequence is encapsulated in signaling Msg1 by UE, and is sent to base station；Specifically, leading
Sequence may include random access radio network temporary identifier (Random Access Radio Network Temporary
Identity, RA-RNTI) and leader sequence 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 leader sequence mark one
One is corresponding, identifies as access, to achieve the purpose that identify that user terminal avoids conflict.In step s 2, base station passes through signaling
Msg2 sends random access response to UE.Meanwhile base station identifies according to leader sequence and carries out uplink scheduling authorization, it is 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
Send RRC connection recovery request；Meanwhile S-TMSI and institute's available for transmission small data packets are also packaged in Msg3.Due to that may deposit
Random access request is initiated with same leader sequence on same resource (namely running time-frequency resource) in multi-section user terminal, therefore can
Energy multi-section user terminal receives Msg2 and issues Msg3, and the content encapsulated in Msg3 is different.Therefore in step s 4, base station root
Msg3 is correctly decoded according to S-TMSI and replys Msg4, indicates that the transmission process of Conflict solving and release namely small data packets terminates.
Wherein, S-TMSI and data validation (DATA ACK) are packaged in Msg4.Multi-section user terminal can be according to encapsulating in Msg4
S-TMSI recognises that the Msg3 of Successful transmissions oneself.
Fig. 2 is a kind of structural schematic diagram 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 wrap
Include leader sequence transmission unit 201 and data transmission unit 202.
Wherein, leader sequence transmission unit 201 is suitable for sending leader sequence 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 for for the small data packets to be transmitted being encapsulated in Msg3, is configured using the base station
The ascending resource send.
In specific implementation, the Temporary Mobile Subscriber Identity for being directed toward the user terminal is located at the head of Msg3, so as to described
Base station is indexed according to the Temporary Mobile Subscriber Identity with the determination user terminal and the key.
In specific implementation, user terminal can notify institute by different leader sequence code characters or configuring preamble sequence resources
Ascending resource needed for stating the different small data packets to be transmitted of the transmission of user terminal described in base station.
The specific embodiment of the embodiment of the present invention can refer to the embodiment of transmitting small data packets method shown in FIG. 1, this
Place repeats no more.
Fig. 3 is the structural schematic diagram of another kind transmitting small data packets device of the embodiment of the present invention.
Transmitting small data packets device 30 shown in Fig. 3 is that one of transmitting small data packets device 20 shown in Fig. 2 is specific real
Apply mode.
Transmitting small data packets device 30 may include：Discriminating unit 301, combining unit 302, leader sequence transmission unit
303, key acquiring unit 304, data transmission unit 305 and confirmation receiving unit 306；Data transmission unit 305 may include
Encryption sub-unit operable 3051 and encapsulation subelement 3052.
Wherein, discriminating unit 301 is suitable for carrying out business identification to institute's available for transmission small data packets, with determination it is each it is described to
Transmit the transmission target of small data packets；Combining unit 302 be suitable for will send target for same packet data network gateway it is described to
Transmission small data packets merge.Leader sequence transmission unit 303 is suitable for sending leader sequence to base station, to notify the base station
Ascending resource needed for user terminal transmits small data packets to be transmitted.Data transmission unit 305 will be described to be transmitted after merging
Small data packets are encapsulated in Msg3, and are sent.Specifically, key acquiring unit 304 is suitable for obtaining and restore in context
Key, the recovery context are stored in the user terminal.So, encryption sub-unit operable 3051 is suitable for utilizing the key pair institute
Small data packets to be transmitted are stated to be encrypted；Encapsulation subelement 3052 is suitable for for the encrypted small data packets to be transmitted being encapsulated in
In Msg3.Confirmation receiving unit 306 is suitable for receiving the transmitting small data packets that the base station issues by Msg4 and confirms.
The specific embodiment of the embodiment of the present invention can refer to shown in transmitting small data packets method shown in FIG. 1 and Fig. 2
Transmitting small data packets device 20 embodiment, details are not described herein again.
The embodiment of the invention also discloses a kind of terminal, the terminal may include transmitting small data packets dress shown in Fig. 3
Set 30 or transmitting small data packets device 20 shown in 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 downlink small data packets are passed
Defeated, this method can be applied to base station side.
The transmitting small data packets method of the present embodiment may comprise steps of：When paging multiple user terminals, instruction
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
When the connection recovery request that family terminal is sent, the small data packets to be transmitted are encapsulated in Msg4, and are sent to described interim
The user terminal that mobile user identification is directed toward.
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 indicates transmission direction, and upward arrow indicates uplink, and downward arrow indicates downlink.
Table 3 is please referred to, in step s 11, RRC paging is initiated to multiple UE in base station.Specifically, base station can also carry S- in the paging
TMSI, to indicate the target terminal user of small data packets to be transmitted.In step s 12, MAC leader sequence is encapsulated in signaling by UE
In Msg1, and it is sent to base station.In step s 13, base station sends random access response to UE by signaling Msg2.In step
In S14, UE sends RRC connection recovery request to base station by signaling Msg3；Meanwhile S-TMSI is also packaged in Msg3.Base
It stands after receiving Msg3 according to the small data packets business of the UE being directed toward of the S-TMSI in S-TMSI correspondence.In step S15, base
It stands small data packets to be transmitted are encapsulated into Msg4 to give bottom and send, rrc layer is responsible for small data packets to be transmitted being transmitted to UE, if
Unsuccessfully repeat the process.In step s 16, UE can request (Hybrid Auto Repeat by down mixing self-retransmission
Request, HARQ) do data validation (DATA ACKnowledge, DATA ACK).
Specifically, base station, can be by being stored in when encrypting to small data packets to be transmitted in step S15
Encryption key is obtained in the recovery context of the base station.If the base station does not save recovery context (namely UE without the UE
Enter the corresponding cell in the base station by cell reselection), then the base station is by small data packets to be transmitted and is packed into Msg4, meanwhile,
It also needs to transmit the parameter for generating encryption key in Msg4.Specifically, generating the parameter of encryption key can be placed on
The head (header) of Msg4.
Specifically, carrying S-TMSI on the head (header) of Msg4 to complete contention resolved.Msg4 includes multiple moneys
When source block, in all resource blocks 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 restoring context obtains failure, base station notifies UE in Msg4, so as to according to the transmitting small data packets of the prior art
The transmission of method completion small data packets.
Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of above-described embodiment is can
It is completed with instructing relevant hardware by program, which can store in computer readable storage medium, storage
Medium may include：ROM, RAM, disk or CD etc..
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It 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
Subject to the range of restriction.
Claims (15)
1. a kind of transmitting small data packets method, which is characterized in that including：
Leader sequence is sent to base station, is provided with uplink needed for notifying the base station user terminal transmission small data packets to be transmitted
Source；
The small data packets to be transmitted are encapsulated in Msg3, are sent using the ascending resource that the base station configures；
Further include before the transmission leader sequence to base station：
Business identification is carried out to institute's available for transmission small data packets, with the transmission target of each small data packets to be transmitted of determination；
The small data packets to be transmitted that target is same packet data network gateway will be sent to merge.
2. transmitting small data packets method according to claim 1, which is characterized in that described by the small data packets to be transmitted
It is encapsulated in Msg3 and includes：
The small data packets to be transmitted after merging are encapsulated in Msg3.
3. transmitting small data packets method according to claim 1, which is characterized in that the transmission leader sequence to base station it
After further include：
The key restored in context is obtained, the recovery context is stored in the user terminal.
4. transmitting small data packets method according to claim 3, which is characterized in that described by the small data packets to be transmitted
It is encapsulated in Msg3 and includes：
It is encrypted using small data packets to be transmitted described in the key pair；
The encrypted small data packets to be transmitted are encapsulated in Msg3.
5. transmitting small data packets method according to claim 3, which is characterized in that be directed toward the interim shifting of the user terminal
The head that family mark is located at Msg3 is employed, so that the base station is indexed according to the Temporary Mobile Subscriber Identity to determine
State user terminal and the key.
6. transmitting small data packets method according to claim 3, which is characterized in that further include：
The transmitting small data packets confirmation that the base station issues is received by Msg4.
7. transmitting small data packets method according to claim 1, which is characterized in that by different leader sequence code character or
Ascending resource needed for configuring preamble sequence resources notify the different small data packets to be transmitted of the transmission of user terminal described in the base station.
8. a kind of transmitting small data packets device, which is characterized in that including：
Leader sequence transmission unit is suitable for sending leader sequence to base station, to notify the base station user terminal transmission to be transmitted
Ascending resource needed for small data packets；
Data transmission unit, suitable for the small data packets to be transmitted are encapsulated in Msg3, configured using the base station described in
Ascending resource is sent；
Discriminating unit is suitable for carrying out business identification to institute's available for transmission small data packets, with each small data to be transmitted of determination
The transmission target of packet；
Combining unit is merged suitable for will send the small data packets to be transmitted that target is same packet data network gateway.
9. transmitting small data packets device according to claim 8, which is characterized in that after the data transmission unit will merge
The small data packets to be transmitted be encapsulated in Msg3.
10. transmitting small data packets device according to claim 8, which is characterized in that further include：
Key acquiring unit, suitable for obtaining the key restored in context, the recovery context is stored in the user terminal.
11. transmitting small data packets device according to claim 10, which is characterized in that the data transmission unit includes：
Encryption sub-unit operable, suitable for being encrypted using small data packets to be transmitted described in the key pair；
Subelement is encapsulated, suitable for the encrypted small data packets to be transmitted are encapsulated in Msg3.
12. transmitting small data packets device according to claim 10, which is characterized in that be directed toward the interim of the user terminal
Mobile user identification is located at the head of Msg3, so that the base station is indexed according to the Temporary Mobile Subscriber Identity with determination
The user terminal and the key.
13. transmitting small data packets device according to claim 10, which is characterized in that further include：
Confirm receiving unit, confirms suitable for receiving the transmitting small data packets that the base station issues by Msg4.
14. transmitting small data packets device according to claim 8, which is characterized in that pass through different leader sequence code characters
Or configuring preamble sequence resources notify the different small data packets to be transmitted of the transmission of user terminal described in the base station needed for uplink provide
Source.
15. a kind of terminal, which is characterized in that including the described in any item transmitting small data packets devices of such as claim 8 to 14.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109219133B (en) * | 2017-06-30 | 2023-08-15 | 中国移动通信有限公司研究院 | Access processing method, user equipment and network equipment |
| CN109548163A (en) * | 2017-08-11 | 2019-03-29 | 华为技术有限公司 | Method, base station and the user equipment of data transmission |
| CN108401538B (en) * | 2017-09-06 | 2021-08-10 | 北京小米移动软件有限公司 | Downlink data transmission method and device, user equipment and base station |
| US20190104564A1 (en) * | 2017-09-29 | 2019-04-04 | Mediatek Inc. | Conditional RRC Confirm Messaging In Wireless Communications |
| CN110351157A (en) * | 2018-04-04 | 2019-10-18 | 大唐移动通信设备有限公司 | A kind of data packet detection method and device |
| CN108696937B (en) * | 2018-04-20 | 2021-02-19 | 北京邮电大学 | Connectionless transmission method and base station suitable for uplink small data packet |
| CN108834215B (en) * | 2018-04-20 | 2020-12-25 | 北京邮电大学 | Connectionless transmission method and terminal suitable for uplink small data packet |
| CN109495886A (en) * | 2018-11-06 | 2019-03-19 | 海信集团有限公司 | A kind of method and apparatus of data transmission |
| WO2020258182A1 (en) * | 2019-06-27 | 2020-12-30 | Oppo广东移动通信有限公司 | Data transmission method, apparatus, and communication device |
| CN111262837B (en) * | 2020-01-09 | 2023-04-11 | 奇安信科技集团股份有限公司 | Data encryption method, data decryption method, system, equipment and medium |
| CN113545162A (en) * | 2020-02-13 | 2021-10-22 | 北京小米移动软件有限公司 | Data transmission processing method and device and storage medium |
| CN116546489A (en) * | 2022-01-25 | 2023-08-04 | 华为技术有限公司 | Method and device for data processing in random access process |
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