CN108696900A - A kind of packaging method of data packet, analytic method, device and equipment - Google Patents
A kind of packaging method of data packet, analytic method, device and equipment Download PDFInfo
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- CN108696900A CN108696900A CN201710232334.5A CN201710232334A CN108696900A CN 108696900 A CN108696900 A CN 108696900A CN 201710232334 A CN201710232334 A CN 201710232334A CN 108696900 A CN108696900 A CN 108696900A
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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
- H04W28/065—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information using assembly or disassembly of packets
Abstract
The present invention provides a kind of packaging method of data packet, analytic method, device and equipment, which includes:Obtain multiple Service Data Unit SDU to be packaged;According to the transformat of the protocol Data Unit PDU of Packet Data Convergence Protocol PDCP, multiple SDU are packaged into PDU.The present invention has reached the technique effect for reducing RLC PDU header overheads and MAC PDU header overheads, and then effectively improve the flexibility of business processing while reducing the PDU quantity of PDCP.The present invention solves in existing 5G technologies, and rlc layer does not have cascade function, increases the header overhead of RLC and MAC, the problem of reducing the flexibility of data transmission bauds and business processing.
Description
Technical field
The present invention relates to mobile communication technology field, more particularly to a kind of packaging method of data packet, analytic method, device
And equipment.
Background technology
At present in Long Term Evolution (Long Term Evolution, LTE) system, Packet Data Convergence Protocol
(Packet Data Convergence Protocol, PDCP) does not have cascade function.PDCP is directed to the number that application layer issues
PDCP sequences (Serial Number, SN) number can be all distributed according to packet, and are encrypted, after head compression increase PDCP header overheads, shape
At PDCP protocol Data Units (Protocol Data Unit, PDU), it is then sent to radio link layer control protocol (Radio
Link Control, RLC).RLC sends multiple PDCP PDU in a RLC PDU, completes packet cascade function.
However, in the 5th third-generation mobile communication technology (5th-Generation, 5G) newest progress, rlc layer no longer has
There are cascade function, i.e., each PDCP PDU to correspond only to a RLC PDU.Include only 1 PDCP PDU in each RLC PDU.
Due to being required for generating a RLC PDU header overhead and medium access control (Medium Access for each PDCP PDU
Control, MAC) PDU header overheads reduce the spirit of data transmission bauds and business processing so more expenses can be brought
Activity.
Invention content
The present invention provides a kind of packaging method of data packet, analytic method, device and equipment, and its purpose is to solve
In existing 5G technologies, rlc layer does not have cascade function, increases the header overhead of RLC and MAC, reduces data transmission bauds
And business processing flexibility the problem of.
To achieve the goals above, the embodiment provides a kind of packaging method of data packet, the packaging methods
Including:
Obtain multiple Service Data Unit SDU to be packaged;
According to the transformat of the protocol Data Unit PDU of Packet Data Convergence Protocol PDCP, multiple SDU are packaged into
PDU。
Preferably, according to the transformat of the protocol Data Unit PDU of Packet Data Convergence Protocol PDCP, by multiple SDU
The step of being packaged into PDU include:
According to the transformat of PDU, the length information of the data packet of multiple SDU is added into the predetermined word in PDU data packet
It is encapsulated in the data field field of PDU data packet in section and by multiple SDU, the PDU after being encapsulated;Or
Multiple SDU are encapsulated according to the length information of each SDU in preset multiple SDU according to the transformat of PDU
In the data field field of PDU data packet, the PDU after being encapsulated.
Preferably, according to the transformat of PDU, the length information of the data packet of multiple SDU is added in PDU data packet
It is encapsulated in the data field field of PDU data packet in preset field and by multiple SDU, the step of PDU after being encapsulated wraps
It includes:
According to the transformat of PDU, the length information of each SDU in the data packet of multiple SDU is added in PDU data
In one continuous preset field of packet, and multiple SDU are encapsulated in the data field field of PDU data packet, after obtaining encapsulation
PDU;Or
According to the transformat of PDU, multiple SDU are encapsulated in the data field field of PDU data packet, by multiple SDU's
The length information of each SDU in data packet adds respectively before the data packet of the SDU and adjacent with the SDU one is pre-
If in field, the PDU after being encapsulated.
Preferably, the length information of each SDU is sent to reception by transmitting terminal by default signaling in preset multiple SDU
End is made an appointment by transmitting terminal and receiving terminal.
Preferably, also there is the field for the quantity for encapsulating multiple SDU in the PDU after encapsulation, the number of SDU is carried in field
Measure information.
Preferably, the field for encapsulating the quantity of multiple SDU is located in the packet header of PDU data packet.
Preferably, in the PDU after encapsulation also there is the transformat of encapsulation PDU to indicate TFI;
The corresponding index of length information for being used to indicate PDU data packet is carried in TFI, index is transmission format set
The corresponding index of length information for multiple preset PDU data packets that TFS includes.
Preferably, TFI is the size mean value of data packet that is preconfigured or can currently transmitting according to transmitting terminal from TFS
Middle selection.
Preferably, the size mean value for the data packet that transmitting terminal can currently transmit is:The currently transmitted business of transmitting terminal is put down
The product of equal rate and a time interval, time interval be between the sending time of PDU and the sending time of a upper PDU when
Between be spaced.
Preferably, the length information of preset PDU data packet included in TFS is:N times of application layer data packet size
The sum of with the byte length of header overhead of PDU, wherein N is positive integer.
To achieve the goals above, the embodiments of the present invention also provide a kind of analytic methods of data packet, including:
Receive the protocol Data Unit PDU data packet for being packaged with multiple Service Data Unit SDU;
According to the transformat of PDU, by PDU data Packet analyzing at multiple SDU.
Preferably, according to the transformat of PDU, the step of by PDU data Packet analyzing at multiple SDU, including:
Obtain the length information of each SDU in multiple SDU;
According to the transformat of PDU, and each length information of SDU, PDU data packet is parsed, is obtained multiple
SDU。
Preferably, the step of obtaining the length information of each SDU in multiple SDU, including:
The length of data packet by way of making an appointment or by each SDU for carrying multiple SDU received
The signaling of information obtains the length information of each SDU in multiple SDU;Or
According to the transformat of PDU, believe from the length for obtaining each SDU in multiple SDU in the preset field of PDU data packet
Breath.
Preferably, preset field is:One continuous preset field of PDU data packet;Or the data packet in each SDU
Before and a preset field adjacent with the SDU.
Preferably, in PDU data packet also there is the transformat of encapsulation PDU to indicate TFI, carries and is used to indicate in TFI
The corresponding index of length information of PDU data packet, index are multiple preset PDU data packets that transmission format set TFS includes
In the corresponding index of length information;And/or
Also there is the field of the quantity of multiple SDU in PDU data packet, the quantity information of SDU is carried in field.
To achieve the goals above, the embodiments of the present invention also provide a kind of packaging systems of data packet, including:
Acquisition module, for obtaining multiple Service Data Unit SDU to be packaged;
Package module is used for the transformat of the protocol Data Unit PDU according to Packet Data Convergence Protocol PDCP, will be more
A SDU is packaged into PDU.
To achieve the goals above, the embodiments of the present invention also provide a kind of sending ending equipments, including above-mentioned data packet
Packaging system.
To achieve the goals above, the embodiments of the present invention also provide a kind of resolvers of data packet, including:
Receiving module, for receiving the protocol Data Unit PDU data packet for being packaged with multiple Service Data Unit SDU;
Parsing module, for the transformat according to PDU, by PDU data Packet analyzing at multiple SDU.
To achieve the goals above, the embodiments of the present invention also provide a kind of receiving devices, including above-mentioned data packet
Resolver.
The said program of the present invention includes at least following advantageous effect:
Packaging method, analytic method, device and the equipment of data packet provided by the invention, by PDCP layers by PDU with
The SDU of upper layer data is arranged to many-one relationship, i.e., PDCP PDU are cascaded to the SDU of multiple upper layer datas, are effectively reduced
PDCP PDU quantity;And PDCP PDU are required for generating a RLC PDU header overhead and therefore MAC PDU header overheads are being reduced
While the PDU quantity of PDCP, the technique effect for reducing RLC PDU header overheads and MAC PDU header overheads is reached, and then effectively
Improve the flexibility of business processing in ground.The present invention solves in existing 5G technologies, and rlc layer does not have cascade function, increases
The header overhead of RLC and MAC, the problem of reducing the flexibility of data transmission bauds and business processing.
Description of the drawings
Fig. 1 shows the basic step flow charts of the packaging method of the data packet of the embodiment of the present invention offer;
Fig. 2 indicates the first exemplary schematic diagram of a scenario of the present invention;
Fig. 3 indicates the basic step flow chart of the packaging method for the data packet that another embodiment of the present invention provides;
Fig. 4 indicates the schematic diagram of the second exemplary PDU data packet of the present invention;
Fig. 5 indicates the basic step flow chart of the packaging method for the data packet that another embodiment of the present invention provides;
Fig. 6 indicates the schematic diagram of the exemplary PDU data packet of third of the present invention;
Fig. 7 indicates the schematic diagram of the 4th exemplary PDU data packet of the present invention;
Fig. 8 shows the block diagrams of the packaging system of the data packet of the embodiment of the present invention offer;
Fig. 9 indicates the basic step flow chart of the analytic method for the data packet that the embodiment of the present invention provides;
Figure 10 indicates the block diagram of the resolver for the data packet that the embodiment of the present invention provides.
Specific implementation mode
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
The present invention is directed to existing problem, provides a kind of packaging method of data packet, analytic method, device and equipment.
Referring to Fig. 1, the embodiment provides a kind of packaging methods of data packet, including:
Step 101, multiple Service Data Unit SDU to be packaged are obtained.
Wherein, Service Data Unit (Service Data Unit, SDU), also known as service data unit, are designated layers
The data set of user service, data do not change when same protocol layer when being transmitted to recipient, i.e. service part;So
After issue lower layer after, lower layer is encapsulated in PDU and sends.Service data unit is the information list come from upper-layer protocol
Member is transmitted to lower layer protocol.According to the difference of the data of protocol Data Unit, it is sent to the designated layer of receiving terminal.
PDU is protocol Data Unit, and the data transmitted between N layer protocol entities manage handle by data transmission/reception
The SDU that user submits as pdus, peering protocol entity is sent to by lower channel.PDU is reduced into again in receiving terminal
SDU is sent to reception end subscriber.
In the prior art, the PDU of n-th layer SDU and last layer is one-to-one, i.e., each PDU includes a SDU;And
In the embodiment of the present invention, PDCP layers of PDU and SDU are arranged to many-one relationship, i.e., each PDU cascades multiple SDU, this
Sample reduces the PDU quantity of PDCP.
And each PDCP PDU are required for generate a RLC PDU header overhead and MAC PDU header overheads, therefore,
While reducing the PDU quantity of PDCP, the technique effect for reducing RLC PDU header overheads and MAC PDU header overheads is reached, in turn
Effectively improve the flexibility of business processing.
Step 102, according to the transformat of the protocol Data Unit PDU of Packet Data Convergence Protocol PDCP, by multiple SDU
It is packaged into PDU.
Wherein, in transmitting terminal, the SDU that user is submitted need to be added Protocol Control Information (Protocol Control
Interface, PCI), it is packaged into PDU, is sent to receiving terminal;Wherein, PCI indicates the head for being used for encapsulating upper layer data in PDU
Portion may include source service access point and destination service access point etc., for which entity of the datagram from upper layer indicated
And need peer-entities which entity on its contacts upper layer.
And the PDU for being sent to receiving terminal need to be packaged according to the transformat of specified PDU, it can basis convenient for receiving terminal
The transformat of PDU decapsulates, and removes PCI, is reduced into SDU and delivers reception end subscriber.
As the first example, as shown in Figure 2, wherein 201 show PDCP PDU header overheads, and 202 show RLC PDU
Header overhead, in the encapsulation process of PDCP PDU, wherein PDCP layers of each PDU has cascaded 3 SDU, and each PDCP PDU are corresponded to
One RLC PDU;In this way, every 3 PDCP SDU only correspond to a RLC PDU, in the certain feelings of the SDU quantity of upper layer data packet
Under condition, reduce the PDU quantity of PDCP, to reduce the quantity of PDCP PDU header overheads 201 and be further reduced RLC
PDU header overheads 202 and MAC PDU header overheads.
In the above embodiment of the present invention, by being arranged to one-to-many pass in the PDCP layers of SDU by PDU and upper layer data
PDCP PDU, i.e., is cascaded the SDU of multiple upper layer datas, effectively reduces PDCP PDU quantity by system;And PDCP PDU are needed
A RLC PDU header overhead and MAC PDU header overheads are generated, therefore, while reducing the PDU quantity of PDCP, is reached
The technique effect of RLC PDU header overheads and MAC PDU header overheads is reduced, and then effectively improves the flexibility of business processing.This
Invention solves in existing 5G technologies, and rlc layer does not have cascade function, increases the header overhead of RLC and MAC, reduces number
According to transmission speed and business processing flexibility the problem of.
Referring to Fig. 3, another embodiment of the present invention provides a kind of packaging method of data packet, including:
Step 301, multiple Service Data Unit SDU to be packaged are obtained.
Under normal conditions, the PDU of n-th layer SDU and last layer is one-to-one, i.e., each PDU includes a SDU;And
In the embodiment of the present invention, PDCP layers of PDU and SDU are arranged to many-one relationship, i.e., each PDU cascades multiple SDU, this
Sample reduces the PDU quantity of PDCP.
And each PDCP PDU are required for generate a RLC PDU header overhead and MAC PDU header overheads, therefore,
While reducing the PDU quantity of PDCP, the technique effect for reducing RLC PDU header overheads and MAC PDU header overheads is reached, in turn
Effectively improve the flexibility of business processing.
It step 302, will be multiple according to the length information of each SDU in preset multiple SDU according to the transformat of PDU
SDU is encapsulated in the data field field of PDU data packet, the PDU after being encapsulated.
Wherein, as the second example, as shown in figure 4, according in multiple SDU, the length information of preset each SDU will
The SDU of upper layer data is encapsulated in the data field field of PDU data packet, the SDU mono- in the SDU in PDCP SDU and PDCP PDU
One corresponds to, and PDU includes n SDU, and each SDU is packaged according to respective preset length information, convenient for receiving terminal according to default
Length information parsed (decapsulate).
Preferably, the length information of each SDU is sent to reception by transmitting terminal by default signaling in preset multiple SDU
End is made an appointment by transmitting terminal and receiving terminal.
Specifically, the length information of each SDU can make transmitting terminal make an appointment with receiving terminal, also can be in the same of data transmission
When be separately configured by default signaling, parsed according to preset length information convenient for receiving terminal.
In the above embodiment of the present invention, by being arranged to one-to-many pass in the PDCP layers of SDU by PDU and upper layer data
PDCP PDU, i.e., is cascaded the SDU of multiple upper layer datas by system, and during SDU is packaged into PDU, the length of each SDU is believed
Breath can make transmitting terminal make an appointment with receiving terminal, can be also separately configured by default signaling while data transmission, the present invention
Effectively reduce PDCP PDU quantity;And PDCP PDU are required for generating a RLC PDU header overhead and MAC PDU is opened
Therefore pin while reducing the PDU quantity of PDCP, has reached the skill for reducing RLC PDU header overheads and MAC PDU header overheads
Art effect, and then effectively improve the flexibility of business processing.
Referring to Fig. 5, another embodiment of the present invention provides a kind of packaging method of data packet, including:
Step 501, multiple Service Data Unit SDU to be packaged are obtained.
Under normal conditions, the PDU of n-th layer SDU and last layer is one-to-one, i.e., each PDU includes a SDU;And
In the embodiment of the present invention, PDCP layers of PDU and SDU are arranged to many-one relationship, i.e., each PDU cascades multiple SDU, this
Sample reduces the PDU quantity of PDCP.
And each PDCP PDU are required for generate a RLC PDU header overhead and MAC PDU header overheads, therefore,
While reducing the PDU quantity of PDCP, the technique effect for reducing RLC PDU header overheads and MAC PDU header overheads is reached, in turn
Effectively improve the flexibility of business processing.
Step 502, according to the transformat of PDU, the length information of the data packet of multiple SDU is added in PDU data packet
Preset field in and multiple SDU are encapsulated in the data field field of PDU data packet, the PDU after being encapsulated.
Wherein, according to the transformat of PDU, the SDU of upper layer data is encapsulated in the data field field of PDU data packet,
And by the addition of the length information of the data packet of each SDU in the preset field of PDU data packet, i.e., in the transformat of PDU,
There are preset fields, the length information of the data packet for storing each SDU, in this way, without making an appointment between receiving terminal
Or the length information of the data packet of each SDU is separately configured by signaling, and the length information of the data packet of SDU is encapsulated in
In PDU, the flexibility of data packet transmission is increased, the SDU in SDU and PDCP PDU in PDCP SDU is corresponded, each
SDU is packaged according to respective preset length information, is parsed according to preset length information convenient for receiving terminal.
Preferably, step 502 includes:
The first step exists the length information addition of each SDU in the data packet of multiple SDU according to the transformat of PDU
In one continuous preset field of PDU data packet, and multiple SDU are encapsulated in the data field field of PDU data packet, are obtained
PDU after encapsulation;Or
Multiple SDU are encapsulated in the data field field of PDU data packet by second step according to the transformat of PDU, will be more
The length information of each SDU in the data packet of a SDU adds before the data packet of the SDU and adjacent with the SDU respectively
A preset field in, the PDU after being encapsulated.
Specifically, in the first step, in the data packet of multiple SDU, the length information of each SDU is added in PDU data packet
In one continuous preset field, i.e., in each PDU data packet, there are a continuous preset field, the length for storing each SDU
Information is spent, the length information of each SDU is left concentratedly, and includes the instruction of corresponding SDU, without advance between receiving terminal
Agreement or be separately configured by signaling each SDU data packet length information, and by the length information of the data packet of SDU seal
In PDU, the flexibility of data packet transmission is increased.
As third example, referring to Fig. 6, the length information addition of each SDU is continuously preset the one of PDU data packet
In field, such as SDU in figure1Length to SDUnLength respectively represents SDU1To SDUnLength information, by length information collection
Middle placement;And the SDU of upper layer data is encapsulated in the data field field of PDU data packet, the SDU in PDCP SDU and PDCP
SDU in PDU is corresponded, and PDU includes n SDU, and each SDU believes according to the respective preset length indicated in PDU data packet
Breath is packaged, and is parsed convenient for receiving terminal, and the flexibility of data packet transmission is increased.
Specifically, in second step, multiple SDU are encapsulated in the data field field of PDU data packet, and by data field field
In multiple SDU data packet in each SDU length information add respectively before the data packet of the SDU and with this
In a preset field adjacent SDU;
The length information of the data packet of i.e. each SDU is adjacent with the data packet of SDU, and the length information of the data packet of SDU
Before the data packet of SDU, in this way, the length information storage adjacent with the data packet of SDU of each SDU, receiving terminal is in parsing
In the process, it can be parsed according to the length information before the data packet of SDU, without making an appointment or leading between receiving terminal
The length information that the data packet of each SDU is separately configured in signaling is crossed, the flexibility of data packet transmission is increased.
The length information of each SDU is added before the data packet of corresponding SDU referring to Fig. 7 as the 4th example,
SDU in such as figure1Before length settings, SDUnLength is arranged in SDUnBefore, SDU1Length to SDUnLength, respectively
Represent SDU1To SDUnLength information;The SDU in SDU and PDCP PDU in PDCP SDU is corresponded, and PDU includes n
SDU, each SDU are packaged according to the respective preset length information indicated in PDU data packet, are solved convenient for receiving terminal
Analysis increases the flexibility of data packet transmission.
It is understood that if the length of each PDCP SDU is known, SDU length are not needed, such as Fig. 4 institutes
Show.
Preferably, in specific embodiments of the present invention, also there is the word for the quantity for encapsulating multiple SDU in the PDU after encapsulation
Section, the quantity information of SDU is carried in field.
Wherein, there is the field for the quantity for encapsulating multiple SDU, i.e., such as the SDU Num in Fig. 4, Fig. 6 and Fig. 7 in PDU
Domain is used to indicate in PDU and how many SDU is encapsulated, and is parsed convenient for SDU quantity indicated in the domains receiving terminal SDU Num;
And the domains SDU Num are that domain may be selected, if signal deployment can be made an appointment or pass through by carrying.
Preferably, in specific embodiments of the present invention, the field for encapsulating the quantity of multiple SDU is located at the packet of PDU data packet
In head, that is, it is arranged before PDU data packet, during receiving terminal parses, SDU is parsed before parsing PDU data packet
Quantity field, so as to according to the quantity of SDU parse PDU data packet.
Preferably, in specific embodiments of the present invention, also there is the transformat instruction of encapsulation PDU in the PDU after encapsulation
TFI;
The corresponding index of length information for being used to indicate PDU data packet is carried in TFI, index is transmission format set
The corresponding index of length information for multiple preset PDU data packets that TFS includes.
Wherein, index is the corresponding rope of length information for multiple preset PDU data packets that transmission format set TFS includes
Draw, the corresponding index of length information for being used to indicate PDU data packet is carried in TFI;For example TFS is assumed to be:336,656,
1516 ... }, subscript is since 0, if being selected as 656, TFI=1, if selection 1516, TFI=2.Pass through following table rope
The mode drawn replaces the length information of directly encapsulation PDU data packet, in order to the length for reducing PDU data packet, due to PDU
The length information data of data packet are larger, and shared byte number is more, and by way of subscript index, institute can be efficiently reduced
The byte space accounted for.
I.e. as shown in the domains TFI in Fig. 4, Fig. 6 and Fig. 7;And the domains TFI are that domain may be selected, if carrying can make an appointment
Or pass through signal deployment.
Optionally, in specific embodiments of the present invention, PDU data packet can not carry the domains TFI, can be by presetting PDCP
The set of PDU formats is arranged the index of the subscript in the set of PDCP PDU formats for the byte length of PDCP PDU, determines
PDU data packet length enables the scheduling instruction that PDCP need not receive MAC that can set up PDCP PDU, for example, setting
PDCP PDU format set TFS is:
{ Size1, Size2 ..., Sizen }
Each Size identifies the byte length of a PDCP PDU in TFS.The index of Size is started counting up from 0, is denoted as
TFI, i.e. TFI=0,1,2 ...
PDCP sets up suitable PDCP PDU according to the size in format set, TFI once it is determined that, then PDCP PDU lattice
Formula collection is combined into limited kind of combination.And the format of the PDCP PDU of PDCP generations centainly belongs to the set, cannot exceed the set
Range.
After introducing preset format, the corresponding RLC PDU length of such PDCP PDU also belongs to the value of certain specific lengths, institute
It can also be further simplified with the Length Indication of RLC PDU, since PDCP PDU length only belongs to specifically gather, it is possible to
The length that designation date packet is indexed by carrying the corresponding lengths sets of PDCP PDU in MAC or RLC head portion, without one
The fixed instructions field for carrying instruction PDCP PDU byte lengths, so as to reduce the header overhead of RLC or MAC.
Preferably, in specific embodiments of the present invention, TFI is preconfigured or can currently be transmitted according to transmitting terminal
What the size mean value of data packet was selected from TFS.
Wherein, TFI can be pre-configured with, also can according to the data packet that transmitting terminal can currently transmit size mean value from TFS
Selection, i.e. PDCP can independently carry out PDCP TFI selections, PDCP can according to current service conditions such as Mean Speed with
Time interval (only considering the starting point of sending time, do not consider the time that transmission data occupies) between two adjacent PDU, is closed
The selection of reason needs PDCP formats to be used, increases the flexibility of PDCP, however the length of the PDCP PDU generated may not be complete
It is exactly the same.
Specifically, in specific embodiments of the present invention, the size mean value for the data packet that transmitting terminal can currently transmit is:It sends
Hold the product of the Mean Speed and a time interval of currently transmitted business, time interval be PDU sending time with upper one
Time interval between the sending time of PDU.
Wherein, the size mean value for the data packet that transmitting terminal can currently transmit is:The Mean Speeds of institute's transmission services and PDU's
The product of time interval between sending time and the sending time of a upper PDU makes transmitting terminal during data transmission
According to currently can transmission packet size, selected from TFS with currently can the closest PDCP of transmission packet size
The length information of PDU, and currently can transmission packet size should be greater than the length information of the PDCP PDU so that transmitting terminal obtains
Peak transfer rate.
Preferably, in specific embodiments of the present invention, the length information of preset PDU data packet included in TFS is:
N times of application layer data packet size and the sum of the byte length of header overhead of PDU, wherein N are positive integer.
Wherein, the length information of preset PDU data packet included in TFS is:The application layer data packet of positive integer times
The length information of the sum of the byte length of header overhead of size and PDU, i.e. preset PDU data packet included in TFS is
Valid data, there may be PDU data packets corresponding thereto, reject invalid data, can efficiently reduce shared by TFI
Byte information reduces the header overhead of PDU data packet, and then reduces the header overhead of RLC or MAC.
In the above embodiment of the present invention, by being arranged to one-to-many pass in the PDCP layers of SDU by PDU and upper layer data
PDCP PDU, i.e., is cascaded the SDU of multiple upper layer datas, effectively reduces PDCP PDU quantity by system;And one can be pre-designed
Group TFS set, selects suitable PDCP PDU long to be used for sending, the data packet that multiple application layers receive is cascaded, and
The size that application layer data packet is indicated in PDCP, facilitates receiving terminal to be unpacked.By the cascade of PDCP, on the one hand subtract
On the other hand the number of few RLC and MAC header reduce the instruction of length field in MAC, while if using the unified PDCP configured
PDU length, data packet are regular length, can also further decrease the processing delay of data packet.The present invention is in the PDU for reducing PDCP
While quantity, the technique effect for reducing RLC PDU header overheads and MAC PDU header overheads is reached, and then effectively improve industry
The flexibility of business processing.The present invention solves in existing 5G technologies, and rlc layer does not have cascade function, increases RLC and MAC
Header overhead, the problem of reducing the flexibility of data transmission bauds and business processing.
Referring to Fig. 8, to achieve the goals above, the embodiments of the present invention also provide a kind of packaging systems of data packet
800, including:
Acquisition module 801, for obtaining multiple Service Data Unit SDU to be packaged;
Package module 802 is used for the transformat of the protocol Data Unit PDU according to Packet Data Convergence Protocol PDCP,
Multiple SDU are packaged into PDU.
Preferably, package module includes:
First encapsulation submodule adds the length information of the data packet of multiple SDU for the transformat according to PDU
It is encapsulated in the data field field of PDU data packet in the preset field of PDU data packet and by multiple SDU, after obtaining encapsulation
PDU;Or
Second encapsulation submodule, for the transformat according to PDU, according to the length of each SDU in preset multiple SDU
Multiple SDU are encapsulated in the data field field of PDU data packet by information, the PDU after being encapsulated.
Preferably, the first encapsulation submodule includes:
First encapsulation unit, for the transformat according to PDU, by the length of each SDU in the data packet of multiple SDU
Information is added in a continuous preset field of PDU data packet, and multiple SDU are encapsulated in the data field of PDU data packet
In field, the PDU after being encapsulated;Or
Multiple SDU are encapsulated in the data field word of PDU data packet by the second encapsulation unit for the transformat according to PDU
Duan Zhong, by the length information of each SDU in the data packet of multiple SDU add respectively before the data packet of the SDU and with
In a preset field adjacent SDU, the PDU after being encapsulated.
Preferably, the length information of each SDU is sent to reception by transmitting terminal by default signaling in preset multiple SDU
End is made an appointment by transmitting terminal and receiving terminal.
Preferably, also there is the field for the quantity for encapsulating multiple SDU in the PDU after encapsulation, the number of SDU is carried in field
Measure information.
Preferably, the field for encapsulating the quantity of multiple SDU is located in the packet header of PDU data packet.
Preferably, in the PDU after encapsulation also there is the transformat of encapsulation PDU to indicate TFI;
The corresponding index of length information for being used to indicate PDU data packet is carried in TFI, index is transmission format set
The corresponding index of length information for multiple preset PDU data packets that TFS includes.
Preferably, TFI is the size mean value of data packet that is preconfigured or can currently transmitting according to transmitting terminal from TFS
Middle selection.
Preferably, the size mean value for the data packet that transmitting terminal can currently transmit is:The currently transmitted business of transmitting terminal is put down
The product of equal rate and a time interval, time interval be between the sending time of PDU and the sending time of a upper PDU when
Between be spaced.
Preferably, the length information of preset PDU data packet included in TFS is:N times of application layer data packet size
The sum of with the byte length of header overhead of PDU, wherein N is positive integer.
The packaging system 800 of the data packet provided in the above embodiment of the present invention, by PDCP layers by PDU and upper layer
The SDU of data is arranged to many-one relationship, i.e., PDCP PDU are cascaded to the SDU of multiple upper layer datas, effectively reduce PDCP
PDU quantity;And PDCP PDU are required for generating a RLC PDU header overhead and MAC PDU header overheads, therefore, are reducing PDCP
PDU quantity while, reached the technique effect for reducing RLC PDU header overheads and MAC PDU header overheads, and then effectively carried
The flexibility of high business processing.The present invention solves in existing 5G technologies, rlc layer do not have cascade function, increase RLC and
The header overhead of MAC, the problem of reducing the flexibility of data transmission bauds and business processing.
It should be noted that the packaging system 800 of data packet provided in an embodiment of the present invention is the dress using the above method
It sets, i.e., all embodiments of the above method are suitable for the device, and can reach same or analogous advantageous effect.
To achieve the goals above, the embodiments of the present invention also provide a kind of sending ending equipments, including above-mentioned data packet
Packaging system 800.
The sending ending equipment provided in the above embodiment of the present invention, by the PDCP layers of SDU by PDU and upper layer data
It is arranged to many-one relationship, i.e., PDCP PDU is cascaded to the SDU of multiple upper layer datas, effectively reduces PDCP PDU quantity;
And PDCP PDU are required for generating a RLC PDU header overhead and MAC PDU header overheads, therefore, in the PDU quantity for reducing PDCP
While, reach the technique effect for reducing RLC PDU header overheads and MAC PDU header overheads, and then effectively improve at business
The flexibility of reason.The present invention solves in existing 5G technologies, and rlc layer does not have cascade function, increases the head of RLC and MAC
Expense, the problem of reducing the flexibility of data transmission bauds and business processing.
Referring to Fig. 9, to achieve the goals above, the embodiments of the present invention also provide a kind of analytic method of data packet,
Including:
Step 901, the protocol Data Unit PDU data packet for being packaged with multiple Service Data Unit SDU is received.
Wherein, Service Data Unit (Service Data Unit, SDU), also known as service data unit, are designated layers
The data set of user service, data do not change when same protocol layer when being transmitted to recipient, i.e. service part;So
After issue lower layer after, lower layer is encapsulated in PDU and sends.Service data unit is the information list come from upper-layer protocol
Member is transmitted to lower layer protocol.According to the difference of the data of protocol Data Unit, it is sent to the designated layer of receiving terminal.
PDU is protocol Data Unit, and the data transmitted between N layer protocol entities manage handle by data transmission/reception
The SDU that user submits as pdus, is sent to peering protocol entity by lower channel, is again reduced into PDU in receiving terminal
SDU is sent to reception end subscriber.
In the prior art, the PDU of n-th layer SDU and last layer is one-to-one, i.e., each PDU includes a SDU;And
In the embodiment of the present invention, PDCP layers of PDU and SDU are arranged to many-one relationship, i.e., each PDU cascades multiple SDU, this
Sample reduces the PDU quantity of PDCP.
And each PDCP PDU are required for generate a RLC PDU header overhead and MAC PDU header overheads, therefore,
While reducing the PDU quantity of PDCP, the technique effect for reducing RLC PDU header overheads and MAC PDU header overheads is reached, in turn
Effectively improve the flexibility of business processing.
Step 902, according to the transformat of PDU, by PDU data Packet analyzing at multiple SDU.
Specifically, in receiving terminal, according to the transformat of the PDU of transmitting terminal, by PDU data Packet analyzing (decapsulation) at more
A SDU.
In the above embodiment of the present invention, by during being parsed to PDU data packet, according to the transmission of PDU
PDCP PDU are cascaded the SDU of multiple upper layer datas, effectively reduced by format by PDU data Packet analyzing at multiple SDU
PDCP PDU quantity;The present invention has reached reduction RLC PDU header overheads and MAC PDU while reducing the PDU quantity of PDCP
The technique effect of header overhead, and then effectively improve the flexibility of business processing.The present invention solves in existing 5G technologies,
Rlc layer does not have cascade function, increases the header overhead of RLC and MAC, reduces the spirit of data transmission bauds and business processing
The problem of activity.
Preferably, step 902 includes:
Obtain the length information of each SDU in multiple SDU;
According to the transformat of PDU, and each length information of SDU, PDU data packet is parsed, is obtained multiple
SDU。
Wherein, since PDU data packet includes multiple SDU, during parsing, the length letter of each SDU need to be determined
Breath, and according to the transformat of PDU, and the length information of each SDU is sent to by PDU data Packet analyzing at multiple SDU
Receive end subscriber.
Preferably, the step of obtaining the length information of each SDU in multiple SDU, including:
The length of data packet by way of making an appointment or by each SDU for carrying multiple SDU received
The signaling of information obtains the length information of each SDU in multiple SDU;Or
According to the transformat of PDU, believe from the length for obtaining each SDU in multiple SDU in the preset field of PDU data packet
Breath.
It specifically, can be according to transmitting terminal and receiving terminal when not carrying the length information of each SDU in PDU data packet
It makes an appointment, can be also separately configured by the default signaling between transmitting terminal, determine the length letter of the data packet of each SDU
Breath.When carrying the length information of each SDU in the preset field of PDU data packet, the number of each SDU is obtained from preset field
According to the length information of packet.
Preferably, preset field is:One continuous preset field of PDU data packet;Or the data packet in each SDU
Before and a preset field adjacent with the SDU.
Wherein, in preset field, the length information of each SDU adds in a continuous preset field of PDU data packet,
In i.e. each PDU data packet, there are a continuous preset field, the length information for storing each SDU, the length of each SDU
Degree information is left concentratedly, and includes the instruction of corresponding SDU, without making an appointment between transmitting terminal or by signaling list
The length information of the data packet of each SDU is solely configured, and the length information of the data packet of SDU is encapsulated in PDU, increases number
According to the flexibility of packet transmission.Or the length information of the data packet of each SDU is adjacent with the data packet of SDU, and the data packet of SDU
Length information before the data packet of SDU, in this way, the length information storage adjacent with the data packet of SDU of each SDU, receives
End can be parsed during parsing according to the length information before the data packet of SDU, without advance between transmitting terminal
Agreement or be separately configured by signaling each SDU data packet length information, increase data packet transmission flexibility.
Preferably, in PDU data packet also there is the transformat of encapsulation PDU to indicate TFI, carries and is used to indicate in TFI
The corresponding index of length information of PDU data packet, index are multiple preset PDU data packets that transmission format set TFS includes
In the corresponding index of length information;
And/or
Also there is the field of the quantity of multiple SDU in PDU data packet, the quantity information of SDU is carried in field.
Wherein, wherein index is the length information pair for multiple preset PDU data packets that transmission format set TFS includes
The index answered carries the corresponding index of length information for being used to indicate PDU data packet in TFI;For example TFS is assumed to be:336,
656,1516 ... }, subscript is since 0, if being selected as 656, TFI=1, if selection 1516, TFI=2.Under
The mode of table index replaces directly encapsulating the length information of PDU data packet, in order to the length for reducing PDU data packet, by
Larger in the length information data of PDU data packet, shared byte number is more, and by way of subscript index, it can be effectively
Reduce shared byte space.
Wherein, there is the field for the quantity for encapsulating multiple SDU, the i.e. domains SDU Num in PDU, be used to indicate in PDU and be packaged with
How many a SDU are parsed convenient for SDU quantity indicated in the domains receiving terminal SDU Num;And the domains SDU Num are that domain may be selected,
Whether carrying can make an appointment with transmitting terminal or pass through signal deployment.
In the above embodiment of the present invention, by during being parsed to PDU data packet, according to the transmission of PDU
PDCP PDU are cascaded the SDU of multiple upper layer datas, effectively reduced by format by PDU data Packet analyzing at multiple SDU
PDCP PDU quantity;And it can be pre-designed one group of TFS set, select suitable PDCP PDU long to be used for sending, by multiple applications
The data packet that layer receives is cascaded, and the size of application layer data packet is indicated in PDCP, and receiving terminal is facilitated to carry out
It unpacks.By the cascades of PDCP, the number of RLC and MAC header are on the one hand reduced, the instruction of length field in MAC is on the other hand reduced,
If simultaneously using the unified PDCP PDU length of configuration, data packet is regular length, can also further decrease data packet
Processing delay.The present invention has reached reduction RLC PDU header overheads and MAC PDU is opened while reducing the PDU quantity of PDCP
The technique effect of pin, and then effectively improve the flexibility of business processing.The present invention solves in existing 5G technologies, rlc layer
Without cascade function, the header overhead of RLC and MAC are increased, reduces the flexibility of data transmission bauds and business processing
The problem of.
Referring to Figure 10, to achieve the goals above, the embodiments of the present invention also provide a kind of resolvers of data packet
1000, including:
Receiving module 1001, for receiving the protocol Data Unit PDU data for being packaged with multiple Service Data Unit SDU
Packet;
Parsing module 1002, for the transformat according to PDU, by PDU data Packet analyzing at multiple SDU.
Preferably, parsing module 1002 includes:
First analyzing sub-module, the length information for obtaining each SDU in multiple SDU;
Second analyzing sub-module, for the transformat according to PDU, and the length information of each SDU, to PDU data
Packet is parsed, and multiple SDU are obtained.
Preferably, the first analyzing sub-module includes:
First acquisition unit, for carrying each of multiple SDU by way of making an appointment or by what is received
The signaling of the length information of the data packet of SDU obtains the length information of each SDU in multiple SDU;Or
Second acquisition unit obtains multiple SDU for the transformat according to PDU from the preset field of PDU data packet
In each SDU length information.
Preferably, preset field is:One continuous preset field of PDU data packet;Or the data packet in each SDU
Before and a preset field adjacent with the SDU.
Preferably, in PDU data packet also there is the transformat of encapsulation PDU to indicate TFI, carries and is used to indicate in TFI
The corresponding index of length information of PDU data packet, index are multiple preset PDU data packets that transmission format set TFS includes
In the corresponding index of length information;
And/or
Also there is the field of the quantity of multiple SDU in PDU data packet, the quantity information of SDU is carried in field.
The resolver 1000 of the data packet provided in the above embodiment of the present invention, by being carried out to PDU data packet
It is by PDU data Packet analyzing at multiple SDU, i.e., PDCP PDU cascades is multiple according to the transformat of PDU during parsing
The SDU of upper layer data effectively reduces PDCP PDU quantity;The present invention reaches while reducing the PDU quantity of PDCP
The technique effect of RLC PDU header overheads and MAC PDU header overheads is reduced, and then effectively improves the flexibility of business processing.This
Invention solves in existing 5G technologies, and rlc layer does not have cascade function, increases the header overhead of RLC and MAC, reduces number
According to transmission speed and business processing flexibility the problem of.
It should be noted that the resolver 1000 of data packet provided in an embodiment of the present invention is the dress using the above method
It sets, i.e., all embodiments of the above method are suitable for the device, and can reach same or analogous advantageous effect.
To achieve the goals above, the embodiments of the present invention also provide a kind of receiving devices, including above-mentioned data packet
Resolver 1000.
The receiving device provided in the above embodiment of the present invention, by the process parsed to PDU data packet
In, according to the transformat of PDU, by PDU data Packet analyzing at multiple SDU, i.e., PDCP PDU are cascaded into multiple upper layer datas
SDU effectively reduces PDCP PDU quantity;The present invention has reached reduction RLC while reducing the PDU quantity of PDCP
The technique effect of PDU header overheads and MAC PDU header overheads, and then effectively improve the flexibility of business processing.The present invention solves
In existing 5G technologies, rlc layer does not have cascade function, increases the header overhead of RLC and MAC, reduces data transmission speed
The problem of flexibility of degree and business processing.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (19)
1. a kind of packaging method of data packet, which is characterized in that including:
Obtain multiple Service Data Unit SDU to be packaged;
According to the transformat of the protocol Data Unit PDU of Packet Data Convergence Protocol PDCP, multiple SDU are packaged into PDU.
2. according to the method described in claim 1, it is characterized in that, the agreement number according to Packet Data Convergence Protocol PDCP
According to the transformat of unit PDU, the step of multiple SDU are packaged into PDU, includes:
According to the transformat of PDU, the length information of the data packet of the multiple SDU is added into the predetermined word in PDU data packet
It is encapsulated in the data field field of the PDU data packet in section and by the multiple SDU, the PDU after being encapsulated;Or
According to the transformat of PDU, according to the length information of each SDU in preset the multiple SDU, by the multiple SDU
It is encapsulated in the data field field of PDU data packet, the PDU after being encapsulated.
3. according to the method described in claim 2, it is characterized in that, the transformat according to PDU, by the multiple SDU
The length information of data packet add and be encapsulated in the PDU numbers in the preset field of PDU data packet and by the multiple SDU
According in the data field field of packet, the step of PDU after being encapsulated, includes:
According to the transformat of PDU, the length information of each SDU in the data packet of the multiple SDU is added in the PDU
In one continuous preset field of data packet, and the multiple SDU is encapsulated in the data field field of the PDU data packet
In, the PDU after being encapsulated;Or
According to the transformat of PDU, the multiple SDU is encapsulated in the data field field of the PDU data packet, it will be described more
The length information of each SDU in the data packet of a SDU adds before the data packet of the SDU and adjacent with the SDU respectively
A preset field in, the PDU after being encapsulated.
4. according to the method described in claim 2, it is characterized in that, in the preset the multiple SDU each SDU length
Information is sent to receiving terminal by default signaling by transmitting terminal or is made an appointment by the transmitting terminal and the receiving terminal.
5. according to claim 1-4 any one of them methods, which is characterized in that also have described in encapsulation in the PDU after encapsulation
The field of the quantity of multiple SDU carries the quantity information of the SDU in the field.
6. according to the method described in claim 5, it is characterized in that, the field of the quantity of the multiple SDU of encapsulation is located at
In the packet header of PDU data packet.
7. according to claim 1-4 any one of them methods, which is characterized in that also have described in encapsulation in the PDU after encapsulation
The transformat of PDU indicates TFI;
The corresponding index of length information for being used to indicate PDU data packet is carried in the TFI, the index is TFS Transport Format Set
Close the corresponding index of length information for multiple preset PDU data packets that TFS includes.
8. the method according to the description of claim 7 is characterized in that the TFI is preconfigured or works as according to transmitting terminal
What the size mean value of the preceding data packet transmitted was selected from the TFS.
9. according to the method described in claim 8, it is characterized in that, the size for the data packet that the transmitting terminal can currently transmit is equal
Value is:The product of the Mean Speed and a time interval of the currently transmitted business of transmitting terminal, the time interval is described
Time interval between the sending time of PDU and the sending time of a upper PDU.
10. the method according to the description of claim 7 is characterized in that preset PDU data packet included in the TFS
Length information is:N times of application layer data packet size and the sum of the byte length of header overhead of the PDU, wherein N are just whole
Number.
11. a kind of analytic method of data packet, which is characterized in that including:
Receive the protocol Data Unit PDU data packet for being packaged with multiple Service Data Unit SDU;
According to the transformat of PDU, by the PDU data Packet analyzing at multiple SDU.
12. according to the method for claim 11, which is characterized in that the transformat according to PDU, by the PDU numbers
The step of according to Packet analyzing at multiple SDU, including:
Obtain the length information of each SDU in the multiple SDU;
According to the transformat of PDU and the length information of each SDU, the PDU data packet is parsed, is obtained
Multiple SDU.
13. according to the method for claim 12, which is characterized in that the length for obtaining each SDU in the multiple SDU
The step of information, including:
The length of data packet by way of making an appointment or by each SDU for carrying the multiple SDU received
The signaling of information obtains the length information of each SDU in the multiple SDU;Or
According to the transformat of the PDU, each SDU in the multiple SDU is obtained from the preset field of the PDU data packet
Length information.
14. according to the method for claim 13, which is characterized in that the preset field is:One company of the PDU data packet
Continuous preset field;Or before the data packet of each SDU and a preset field adjacent with the SDU.
15. according to claim 11-14 any one of them methods, which is characterized in that also have encapsulation in the PDU data packet
The transformat of the PDU indicates TFI, and the corresponding rope of length information for being used to indicate the PDU data packet is carried in TFI
Draw, the index is the corresponding index of length information in multiple preset PDU data packets that transmission format set TFS includes;
And/or
Also there is the field of the quantity of the multiple SDU in the PDU data packet, the number of the SDU is carried in the field
Measure information.
16. a kind of packaging system of data packet, which is characterized in that including:
Acquisition module, for obtaining multiple Service Data Unit SDU to be packaged;
Package module is used for the transformat of the protocol Data Unit PDU according to Packet Data Convergence Protocol PDCP, will be multiple
SDU is packaged into PDU.
17. a kind of sending ending equipment, which is characterized in that including:The packaging system of data packet as claimed in claim 16.
18. a kind of resolver of data packet, which is characterized in that including:
Receiving module, for receiving the protocol Data Unit PDU data packet for being packaged with multiple Service Data Unit SDU;
Parsing module, for the transformat according to PDU, by the PDU data Packet analyzing at multiple SDU.
19. a kind of receiving device, which is characterized in that including:The resolver of data packet as claimed in claim 18.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710232334.5A CN108696900A (en) | 2017-04-11 | 2017-04-11 | A kind of packaging method of data packet, analytic method, device and equipment |
| PCT/CN2018/081891 WO2018188510A1 (en) | 2017-04-11 | 2018-04-04 | Method, apparatus and device for encapsulating and parsing data packet in data link layer |
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| CN201710232334.5A CN108696900A (en) | 2017-04-11 | 2017-04-11 | A kind of packaging method of data packet, analytic method, device and equipment |
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