CN108012289A

CN108012289A - The sending method and device of PDU, and the method for reseptance and device of PDU

Info

Publication number: CN108012289A
Application number: CN201610942661.5A
Authority: CN
Inventors: 何青春; 杜忠达; 黄河
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-11-01
Filing date: 2016-11-01
Publication date: 2018-05-08
Anticipated expiration: 2036-11-01
Also published as: CN108012289B

Abstract

The present invention provides the method for reseptance and device of the sending method and device of a kind of PDU, and PDU, wherein, which includes：Sending ending equipment is when the PDU or PDU that second user face entity is sent to receiving device are segmented, the first Length Indication information is set in the header that the PDU or PDU is segmented, indicated to participate in the information such as the quantity of PDU of the first user entity of cascade or multiplexing with the first Length Indication information, there is the configured information, receiving device can be before the PDU or PDU for not parsing whole second user face entity be segmented, it just would know that many effective informations, can effectively reduce the data group bag complexity of PDU or the PDU segmentation of second user face entity.Using above-mentioned technical proposal, solve the problems, such as in correlation technique since data analyzing efficiency caused by the construction complexity of protocol Data Unit is low, there is provided data analyzing efficiency, reduces processing delay.

Description

The sending method and device of PDU, and the method for reseptance and device of PDU

Technical field

The present invention relates to the communications field, in particular to the sending method and device of a kind of PDU, and the recipient of PDU Method and device.

Background technology

In Long Term Evolution communication system LTE, user face protocol stack includes Packet Data Convergence Protocol (Packet Data Convergence Protocol, referred to as PDCP), wireless spread-spectrum technology (Radio Link Control, referred to as RLC) and Medium education (Medium Access Control, referred to as MAC) three parts, wherein, Unacknowledged Mode (Unacknowledged Mode, referred to as UM) and affirmation mode (Acknowledged Mode, referred to as AM) transmission mode Under RLC PDU (protocol Data Unit, Protocol Data Unit) head be made of two parts, i.e. fixed field and extension field, In (Unacknowledged Mode Data, unacknowledged mode data) UMD PDU, fixed field mainly includes segmentation instruction The information such as FI, extended bit E and sequence number (Serial Number) SN, extension field information include a series of Length Indication LI Information.In (Acknowledged Mode Data, acknowledged mode data) AMD PDU, fixed field mainly includes data and controls Indicate D/C, the again information such as segmentation instruction RF, Polling bit P, segmentation instruction FI, extended bit E and sequence number SN, extension field Information includes the Length Indication LI information of some.In above two data-transmission mode, data are all placed on the team of RLC PDU Tail, for the situation that data cascade has been carried out in sending ending equipment, the Length Indication information LI in extension field is dynamic change, Whole Length Indication information LI that decoder in receiving terminal must be docked in the extension field in received RLC PDU header informations are translated The data portion of RLC PDU could be handled after code, such data analyzing efficiency is than relatively low.

For the problem that in correlation technique, since data analyzing efficiency is low caused by the construction complexity of protocol Data Unit, There is presently no effective technical solution.

The content of the invention

An embodiment of the present invention provides the method for reseptance and device of the sending method and device of a kind of PDU, and PDU, so that Solve the problems, such as less in correlation technique since data analyzing efficiency caused by the construction complexity of protocol Data Unit is low.

According to one embodiment of present invention, there is provided a kind of protocol Data Unit (Protocol Data Unit, abbreviation For PDU) sending method, including：

The protocol Data Unit PDU or PDU that sending ending equipment sends second user face entity to receiving device are segmented, its In, the first Length Indication information is provided with the header of PDU or the PDU segmentation of the second user face entity, wherein, it is described First Length Indication information is used to indicate one of following information：

Quantity for the PDU for indicating to participate in cascade or the first user entity being multiplexed；

The number of the second Length Indication information carried in protocol Data Unit PDU for indicating second user face entity Amount, wherein, each second Length Indication information is used to indicate each corresponding with the second Length Indication information described The size of the PDU of first user entity；

For the domain for being used to indicate the PDU information of the first user entity for indicating to include in second user face entity PDU Total length；

For indicating the word between the first Length Indication information and first the first user entity protocol Data Unit PDU Joint number.

Alternatively, the first user entity for packet aggregation agreement (Packet Data Convergence Protocol, Referred to as PDCP), second user face entity is wireless spread-spectrum technology (Radio Link Control, referred to as RLC)；Alternatively, First user entity is RLC, and for medium education, (Medium Access Control, are referred to as second user face entity MAC)。

Alternatively, when the second user face entity possesses the PDU progress fragmentation features to the first user entity, institute State the PDU of the first user entity while the PDU comprising complete first user entity and PDU points of the first user entity Section.

Alternatively, the second user face entity is only when the PDU to second user face entity is segmented again, to this The PDU for the first user entity that the PDU of two user entities is included is segmented.

Alternatively, the domain of the PDU information of the first user entity of the instruction is believed including at least second Length Indication The domain of breath, wherein, each second Length Indication information is used to indicate each corresponding with the second Length Indication information The size of the PDU of first user entity.

Alternatively, possess in the second user face entity and the PDU of the first user entity is segmented or is segmented again During function, it is segmented for the PDU of the first user entity, the domain of the PDU information of the first user entity of the instruction also includes First user entity PDU segment informations domain, wherein, each first user entity PDU segment informations domain is used to indicate Each the PDU of first user entity corresponding with the first user entity PDU segment informations domain is segmented in former PDU In positional information.

Alternatively, the first configured information is included in the second user face entity PDU header information, wherein, described first refers to Show that information is used to indicate whether to set the first Length Indication information in the header.

Alternatively, when the second user face entity is segmented the PDU of second user face entity again, second user Face entity includes one below to the processing mode of the first Length Indication information：

Comprising described in some segmentation of second user face entity only in some segmentations of second user face entity PDU First Length Indication information；At this time, the second user face entity is complete before the value of the first Length Indication information is equal to segmentation The value for the first Length Indication information that PDU is included；

Second user face entity refers in one or more segmentations of second user face entity PDU comprising first length Show information.At this time, the value of the first Length Indication information in the second user face entity PDU segmentations after being segmented by including The first user entity PDU recalculate to obtain.

According to another embodiment of the invention, there is provided a kind of method of reseptance of protocol Data Unit PDU, including：

Receiving device receives PDU or PDU points of the protocol Data Unit for the second user face entity that sending ending equipment is sent Section, wherein, the first Length Indication information is provided with the header of PDU or the PDU segmentation of the second user face entity, its In, the first Length Indication information is used to indicate one of following information：

For indicating the word between the first Length Indication information and first the first user entity protocol Data Unit PDU Joint number；

The receiving device parses the PDU or described PDU segmentations.

Alternatively, the receiving device receives the PDU for the second user face entity that the sending ending equipment is sent During segmentation, the value implication of the first Length Indication information in PDU segmentations is one of the following：

The implication of the first Length Indication value in the PDU segmentations is complete for the second user face entity before segmentation The value for the first Length Indication information that PDU is included.

The implication of the first Length Indication value in the PDU segmentations is by PDU points of second user face entity after being segmented The the first user entity PDU included in section recalculates to obtain.

According to another embodiment of the invention, there is provided a kind of dispensing device of protocol Data Unit, applied to transmission End equipment, it is characterised in that including：

Initiator block, for sending PDU or PDU points of the protocol Data Unit of second user face entity to receiving device Section, wherein, the first Length Indication information is provided with the header of PDU or the PDU segmentation of the second user face entity, its In, the first Length Indication information is used to indicate one of following information：

Alternatively, when the second user face entity is segmented the PDU of second user face entity again, second user Processing of the face entity to the first Length Indication is one of the following：

According to another embodiment of the invention, there is provided a kind of reception device of protocol Data Unit PDU, applied to connecing Receiving end equipment, including：

Receiving module, the protocol Data Unit PDU or PDU of the second user face entity for receiving sending ending equipment transmission Segmentation, wherein, the first Length Indication information is provided with the header of PDU or the PDU segmentation of the second user face entity, Wherein, the first Length Indication information is used to indicate one of following information：For indicating that participating in the first of cascade or multiplexing uses The quantity of the PDU of family face entity；The second length carried in protocol Data Unit PDU for indicating second user face entity refers to Show the quantity of information, wherein, each second Length Indication information is used to indicate each and the second Length Indication information The size of the PDU of corresponding first user entity；It is used to indicate for indicate to include in second user face entity PDU The total length in the domain of the PDU information of the first user entity；For indicating the first Length Indication information and first the first user Byte number between face entity protocol Data Unit PDU；

The parsing module of the receiving device, for parsing the PDU or described PDU segmentations.

Alternatively, the receiving module receives the protocol Data Unit for the second user face entity that sending ending equipment is sent When PDU is segmented, the value implication of the first Length Indication in PDU segmentations is one of the following：

According to another embodiment of the invention, a kind of sending/receiving system of protocol Data Unit PDU is additionally provided, is wrapped Include：

Sending ending equipment, for sending PDU or PDU points of the protocol Data Unit of second user face entity to receiving device Section, wherein, the first Length Indication information is provided with the header of PDU or the PDU segmentation of the second user face entity, its In, first Length Indication is used to indicate one of following information：

The receiving device, for parsing the PDU or described PDU segmentations.

According to still another embodiment of the invention, a kind of storage medium is additionally provided.The storage medium is arranged to storage and uses In the program code for performing following steps：

The protocol Data Unit PDU or PDU that sending ending equipment sends second user face entity to receiving device are segmented, its In, the first Length Indication information is provided with the header of PDU or the PDU segmentation of the second user face entity, wherein, it is described First Length Indication information is used to indicate one of following information：The first user entity for cascading or being multiplexed for indicating participation The quantity of PDU；The number of the second Length Indication information carried in protocol Data Unit PDU for indicating second user face entity Amount, wherein, each second Length Indication information is used to indicate each corresponding with the second Length Indication information described The size of the PDU of first user entity；It is used for the first user plane of instruction for indicate to include in second user face entity PDU The total length in the domain of the PDU information of entity；For indicating the first Length Indication information and first the first user entity agreement Byte number between data cell PDU.

Alternatively, storage medium is also configured to the program code that storage is used to perform following steps：

Receiving device receives PDU or PDU points of the protocol Data Unit for the second user face entity that sending ending equipment is sent Section, wherein, the first Length Indication information is provided with the header of PDU or the PDU segmentation of the second user face entity, its In, the first Length Indication information is used to indicate one of following information：For indicating the first user for participating in cascade or multiplexing The quantity of the PDU of face entity；The second Length Indication carried in protocol Data Unit PDU for indicating second user face entity The quantity of information, wherein, each second Length Indication information is used to indicate each and the second Length Indication information pair The size of the PDU for first user entity answered；It is used to indicate for indicate to include in second user face entity PDU The total length in the domain of the PDU information of one user entity；For indicating the first Length Indication information and first the first user plane Byte number between en-tity protocol data unit PDU；

The receiving device parses the PDU or described PDU segmentations.

By the present invention, sending ending equipment is when sending the PDU of second user face entity to receiving device, in the PDU Header in the first Length Indication information is set, with the first Length Indication information indicate participate in cascade or multiplexing first use The information such as the quantity of the PDU of family face entity, there is the configured information, and receiving device can not parse whole second user face Before the PDU of entity, so that it may know many effective informations, can effectively reduce the data group bag of the PDU of second user face entity Complexity.Using above-mentioned technical proposal, solve in correlation technique due to data caused by the construction complexity of protocol Data Unit The problem of analyzing efficiency is low, there is provided data analyzing efficiency, reduces processing delay.

Brief description of the drawings

Attached drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：

Fig. 1 is user plane protocol entity schematic diagram according to embodiments of the present invention；

Fig. 2 is a kind of sending method flow chart of protocol Data Unit according to embodiments of the present invention；

Fig. 3 is the schematic diagram of the UMD PDU (LI number is even number) of the sequence number SN=10 in correlation technique；

Fig. 4 is the schematic diagram of the AMD PDU (LI number is even number) of the sequence number SN=10 in correlation technique；

Fig. 5 is the AMD PDU lattice of the second user interface entities of sequence number SN=16 according to the preferred embodiment of the invention The schematic diagram of formula (increase #LI fields)；

Fig. 6 is the schematic diagram that second user interface entities according to the preferred embodiment of the invention indicate LI number by #LI；

Fig. 7 is the byte number that second user interface entities according to the preferred embodiment of the invention indicate Changeable head by #LI Schematic diagram；

Fig. 8 is that second user interface entities according to the preferred embodiment of the invention indicate that PDU and/or PDU is segmented by #LI Number schematic diagram；

Fig. 9-a are the specific forms of second user face entity protocol Data Unit PDU according to the preferred embodiment of the invention One schematic diagram one；

Fig. 9-b are the specific forms of second user face entity protocol Data Unit PDU according to the preferred embodiment of the invention One schematic diagram two；

Figure 10 is the specific form two of second user face entity protocol Data Unit PDU according to the preferred embodiment of the invention Schematic diagram；

Figure 11 is the transmitting-receiving flow diagram of protocol Data Unit according to the preferred embodiment of the invention；

Figure 12 is the schematic diagram one that the second user face entity of the preferred embodiment of the present invention cascades data packet in advance；

Figure 13 is the schematic diagram that second user face entity according to the preferred embodiment of the invention cascades data packet in advance Two；

Figure 14 is the schematic diagram that second user face entity according to the preferred embodiment of the invention cascades data packet in advance Three；

Figure 15 is the schematic diagram that second user face entity according to the preferred embodiment of the invention cascades data packet in advance Four；

Figure 16 is second user face entity protocol data bag (such as MAC PDU) signal according to the preferred embodiment of the invention Figure.

Embodiment

Come that the present invention will be described in detail below with reference to attached drawing and in conjunction with the embodiments.It should be noted that do not conflicting In the case of, the feature in embodiment and embodiment in the application can be mutually combined.

It should be noted that term " first " in description and claims of this specification and above-mentioned attached drawing, " Two " etc. be for distinguishing similar object, without for describing specific order or precedence.

Embodiment one

A kind of mobile communications network (including but not limited to 5G mobile communications networks), the net are provided in the embodiment of the present application The network architecture of network can include sending ending equipment and receiving device.Provide in the present embodiment one kind can run on it is above-mentioned Information transferring method in the network architecture, it is necessary to explanation, the above- mentioned information transmission method that is provided in the embodiment of the present application Running environment is not limited to the above-mentioned network architecture.

It should be noted that Fig. 1 is user plane protocol entity schematic diagram according to embodiments of the present invention, as shown in Figure 1, this The user plane protocol entity of future mobile communication system (including but not limited to 5G mobile communications networks) may be by three layers in invention User entity forms.Three layer user surface entities correspond to PDCP functions and its evolution enhancing in LTE system, RLC functions respectively And its evolution enhancing, and MAC functions and its evolution enhancing.There are so three layer user surface entities, it is not right in present specification Which layer entity is that PDCP or RLC or MAC are specifically limited.

Fig. 2 is a kind of sending method flow chart of protocol Data Unit according to embodiments of the present invention, as shown in Fig. 2, should Method comprises the following steps：

Step S202, sending ending equipment obtain PDU or the PDU segmentation of second user face entity, wherein, the second user The first Length Indication information is provided with the header of PDU or the PDU segmentation of face entity, wherein, the first Length Indication letter Breath is used to indicate one of following information：

Step S204, sending ending equipment to receiving device send second user face entity protocol Data Unit PDU or PDU is segmented.

Alternatively, the first user entity in above-described embodiment is PDCP, and second user face entity is RLC；Alternatively, the One user entity is RLC, and second user face entity is MAC.

You need to add is that the technical solution involved in present specification, is not limited to only carry out the work(that PDU is segmented again Can, it is possible to have Service Data Unit (Service Data Unit, referred to as SDU) fragmentation feature.By present specification In technical solution be applied to SDU segmentations in the case of, can be that only the SDU of complete second user face entity is cascaded, Complete and incomplete second user face entity SDU can be included to cascade.

Through the above technical solutions, sending ending equipment sets the first length in the header of the PDU of second user face entity Configured information is spent, retransmiting to receiving device, receiving device can quickly position according to the first Length Indication information To data portion, the protocol Data Unit SDU of the second user face entity is parsed easy to receiving device.Solves correlation technique In due to the problem of data analyzing efficiency is low caused by the construction complexity of protocol Data Unit, there is provided data analyzing efficiency, subtracts Processing delay is lacked.

Alternatively, possesses heavy fragmentation feature in the second user face entity, and the second user face entity performs When being segmented again, the first Length Indication information be additionally operable to instruction participate in cascade or multiplexing the first user entity PDU with The total quantity of PDU segmentations.It should be noted that the first Length Indication information can serve to indicate that participation described in present specification The quantity of the PDU of first user entity of cascade or multiplexing；Alternatively, the protocol data list for indicating second user face entity The quantity of the second Length Indication information carried in first PDU, wherein, each second Length Indication information is used to indicate each The size of the PDU of first user entity corresponding with the second Length Indication information；Alternatively, for indicating that second uses What is included in the face entity PDU of family is used to indicate the total length in the domain of the PDU information of the first user entity；Alternatively, for indicating Byte number between first Length Indication information and first the first user entity protocol Data Unit PDU.

Alternatively, participate in cascade or multiplexing first user entity PDU quantity be more than one or PDU with When the sum of quantity of PDU segmentations is more than one, first length is just provided with the PDU header information of the second user face entity Spend configured information., i.e., need not be in header i.e. when it is one to participate in the PDU of the first user entity of cascade or multiplexing One configured information is set, only when it is multiple to participate in the PDU of the first user entity of cascade, just needs an instruction letter Breath is managed collectively.Indicated whether the appearance of the first Length Indication information by the first configured information.

Alternatively, the first Length Indication information represents the number of the second Length Indication information in header, wherein, often A second Length Indication information is used to indicate each first user plane corresponding with the second Length Indication information The size of PDU or the PDU segmentation of entity.It should be noted that the first Length Indication information be used to indicate thereafter how many Two Length Indication information follow, and each second Length Indication information is used to indicate first user entity for participating in cascade PDU or PDU segmentation size.

Alternatively, PDU or PDU the segmentation header of the second user face entity include at least one of：

Data or control configured information, weight segment identification configured information, state report feedback configured information, segmentation instruction letter Breath, finally be segmented configured information, grading excursion configured information, PDU sequence numbers, the first configured information, the first Length Indication information, Second Length Indication information.

Alternatively, it is provided with second user face entity PDU or PDU the segmentation header for indicating that the PDU is The heavy segment identification configured information of PDU or PDU segmentations.

Alternatively, it is segmented in second user the face entity PDU or PDU in header and is not provided with being segmented configured information again In the case of, last segmentation instruction and Fragment Offset are provided with the second user face entity PDU header information, wherein, institute State last segmentation instruction and Fragment Offset is used to indicate that the PDU is PDU or PDU segmentations.

Alternatively, when the second user face entity is segmented the PDU of second user face entity again, second user Face entity includes one below to the processing mode of the first Length Indication information：Second user face entity is only real in second user face The first Length Indication information is included in some segmentation in some segmentations of body PDU；At this time, which believes The value of breath is equal to the value for the first Length Indication information that the preceding complete PDU of the second user face entity of segmentation is included；Second User entity includes the first Length Indication information in one or more segmentations of second user face entity PDU.At this time, The first user plane that the value of the first Length Indication information includes in being segmented by the second user face entity PDU after being segmented Entity PDU recalculates to obtain.Which kind of you need to add is that specifically provided using above-mentioned processing mode by agreement, Huo Zheyou Rrc layer protocol configuration.

According to another embodiment of the invention, a kind of method of reseptance of protocol Data Unit, this method bag are additionally provided Include following steps：

Step 1, receiving device receive sending ending equipment send second user face entity protocol Data Unit PDU or The PDU segmentations, wherein, it is provided with the first length in the header of the PDU or described PDU segmentations of the second user face entity Configured information, wherein, the first Length Indication information is used to indicate one of following information：

Step 2, the receiving device parses the PDU or described PDU segmentations.

Alternatively, the quantity for the second Length Indication information that receiving device is represented according to the first Length Indication information Or the total length or first for being used to indicate the domain of the PDU information of the first user entity included in second user face entity PDU Byte number between Length Indication information and first the first user entity protocol Data Unit PDU determines the start bit of data Put.

It is described in detail below in conjunction with the preferred embodiment of the present invention.

In future mobile communications 5G, if the still group bag using RLC PDU in LTE in correlation technique and process of unpacking, Data group bag complexity is high, and data-handling efficiency is low, the decoder in receiving terminal need to a series of Length Indication information LI and/ Or after the parsing such as segmentation configured information, it just can know that the initial position of data, reception analyzing efficiency is low, is unfavorable for low transmission in 5G The requirement of time delay and processing delay, therefore, it is necessary to study a kind of new protocol data unit construction method to simplify the group of data Packet procedures, to reduce data group bag and processing complexity, improve the data analyzing efficiency of receiving terminal, reduce processing delay.Wherein, 5G user plane protocol entity schematic diagrames are as shown in Figure 1.

Based on analysis above, present specification proposes a kind of protocol Data Unit processing method, it is intended to reduces agreement The data group bag complexity of data cell, improves data analyzing efficiency.

In a preferred embodiment of the invention, there is provided a kind of protocol Data Unit processing method, in second user face entity Protocol Data Unit PDU or PDU segmentation header in increase by the first Length Indication information, wherein, first length refers to Show that information is used to indicate one of following information：Quantity for the PDU for indicating to participate in cascade or the first user entity being multiplexed； The quantity of the second Length Indication information carried in protocol Data Unit PDU for indicating second user face entity, wherein, often A second Length Indication information is used to indicate each first user plane corresponding with the second Length Indication information The size of the PDU of entity；For the PDU for being used to indicate the first user entity for indicating to include in second user face entity PDU The total length in the domain of information；For indicating the first Length Indication information and first the first user entity protocol Data Unit Byte number between PDU.

The protocol data unit head information of the second user face entity includes at least one of：Data or control refer to Show information, weight segment identification configured information, state report feedback configured information, segmentation configured information, be finally segmented configured information, Grading excursion configured information, PDU sequence numbers, the first configured information, the first Length Indication information, first the second length of configured information Configured information.

The first Length Indication information represents the number of the second Length Indication information in header, can also indicate that more Protocol Data Unit PDU and/or the PDU segmentation of few first user entity cascade or have been multiplexed, alternatively, described First Length Indication information is used for the PDU for being used to indicate the first user entity for indicating to include in second user face entity PDU The total length in the domain of information, alternatively, the first Length Indication information is used to indicating the first Length Indication information and first the Byte number between one user entity protocol Data Unit PDU.

The PDU for participating in cascade can be the complete PDU of the first user entity, and it is total to be that complete PDU and PDU is segmented Quantity.

Alternatively, indicated by increasing weight segment identification in the second user face entity protocol data unit head information Presentation of information indicates that the protocol Data Unit is PDU or PDU segmentations.

Alternatively, without configured information is segmented again in the header, only by the second user face entity agreement Protocol Data Unit described in increasing last segmentation instruction and Fragment Offset implicit instruction in data cell header be PDU or PDU is segmented.

The second Length Indication information is located in the protocol data unit head information of the second user face entity, described The size of the service data unit of each second user face entity for participating in cascade of second Length Indication information instruction.It is described The bit length that second Length Indication information takes is variable.

It is the embodiment in the preferred embodiment of the present invention below

Before the technical solution of present specification is introduced, first related skill in lower LTE system is introduced to attached drawing 4 with attached drawing 3 Art, Fig. 3 are the schematic diagrames of the UMD PDU (LI number is even number) of the sequence number SN=10 in correlation technique.Fig. 3 descriptions It is an example of UMP PDU frame structures in LTE system, from figure 3, it can be seen that UMD PDU header informations are by fixed field and expansion Domain two parts composition is opened up, since extension field is dynamic change, extension field includes n Length Indication LI, n value and corresponds to participation level The number of the RLC SDU of connection, RLC dispatch the cascade of instruction progress RLC SUD according to MAC, due to the dynamic of scheduling, divide every time The resource of dispensing same logical channel is not necessarily identical, so that the size of RLC PDU data bags is also dynamic change, its dynamic becomes Change is indicated by extension field part.In existing LTE protocol framework, only pass through the instruction of fixed field in RLC PDU header informations Information can not determine the space size shared by extension field, can not also know how many Length Indication LI in extension field and have How many a RLC SDU are cascaded, and receiving terminal after receiving the data must be to all length configured information in extension field It just can know that the initial position of data after LI parsings.

Fig. 4 is the schematic diagram of the AMD PDU (LI number is even number) of the sequence number SN=10 in correlation technique.Fig. 4 One example of AMP PDU frame structures in LTE system is described, it is similar with Fig. 3, figure 4, it is seen that AMD PDU heads Information is made of fixed field and extension field two parts, and since extension field is dynamic change, extension field includes n Length Indication LI, n value correspond to the number for the RLC SDU for participating in cascade, and RLC dispatches the cascade for indicating to carry out RLC SUD according to MAC, due to The dynamic of scheduling, distributes to that the resource of same logical channel is not necessarily identical every time, so that the size of RLC PDU data bags It is dynamic change, its dynamic change is indicated by extension field part.In existing LTE protocol framework, only pass through RLC PDU heads The configured information of fixed field can not determine the space size shared by extension field in information, how many can not also know in extension field A Length Indication LI, receiving terminal after receiving the data must be to ability after all length configured information LI parsings in extension field Know the initial position of data.

Fig. 5 is the AMD PDU lattice of the second user interface entities of sequence number SN=16 according to the preferred embodiment of the invention The schematic diagram of formula (increase #LI fields).In Fig. 5, by second user en-tity protocol data the unit PDU and/or PDU points Increase by the first Length Indication information #LI in the header of section to reach reduction data processing complexity, improve data-handling efficiency Purpose, the Length Indication information be located at second user face entity the protocol Data Unit PDU and/or PDU segmentation head letter In breath, the number of the PDU for the first user entity for indicating to participate in cascade or multiplexing is used for for the first Length Indication information Amount；Alternatively, the number of the second Length Indication information carried in protocol Data Unit PDU for indicating second user face entity Amount, wherein, each second Length Indication information is used to indicate each corresponding with the second Length Indication information described The size of the PDU of first user entity；Alternatively, it is used for instruction first for indicate to include in second user face entity PDU The total length in the domain of the PDU information of user entity；Alternatively, for indicating the first Length Indication information and first the first user Byte number between face entity protocol Data Unit PDU.

The business datum list of each each second user face entity for participating in cascade of second Length Indication information instruction The size of first SDU and/or SDU segmentation.The bit length that the first Length Indication information takes is variable, for example its length can be with A byte or two byte lengths are taken, whether the first Length Indication information occurs being referred to by the first configured information Show.The second Length Indication information LI length is variable, can take 16 bits, can also take 12 bits, or other are rational Length.LI number of the receiving terminal indicated by by each LI bit lengths taken and #LI, you can know the start bit of data Put；Or receiving terminal passes through the byte number of the #LI Changeable heads represented, you can knows the initial position of data；Or receiving terminal leads to Cross how many first user entity protocol Data Unit (such as PDCP PDU) PDU and/or PDU segmentation #LI represents Cascaded, you can know the initial position of data and/or the cascade situation of data packet, it is necessary to explanation, general feelings Under condition, the number+1 of number=LI of PDU and/or the PDU segmentation of cascade is participated in.By the above method, it can effectively improve and connect The analyzing efficiency of receiving end data.Wherein, protocol Data Unit PDU and/or PDU the segmentation header of the second user face entity In further include at least one：Data or control configured information, weight segment identification configured information, state report feedback instruction letter Breath, segmentation configured information, finally sequence number, segmentation configured information, grading excursion configured information, the first configured information, the second length Spend configured information.

The embodiment 1 of the preferred embodiment of the present invention

Fig. 6 is the schematic diagram that second user interface entities according to the preferred embodiment of the invention indicate LI number by #LI. In Fig. 6, by increasing by the first length in the header that second user en-tity protocol data the unit PDU and/or PDU are segmented Configured information #LI reaches reduction data processing complexity, improves the purpose of data-handling efficiency, first Length Indication letter In the header of second user face entity the protocol Data Unit PDU and/or PDU segmentation, it passes through breath whether appearance First configured information is indicated that the first Length Indication information described in Fig. 6 is used to represent that the second Length Indication to be believed in header The number of breath, wherein, the business of each each second user face entity for participating in cascade of second Length Indication information instruction The size of data cell SDU and/or SDU segmentation.The bit length that the first Length Indication information takes is variable, such as its length Degree can take a byte or two byte lengths.The second Length Indication information LI length is variable, can take 16 bits, 12 bits, or other rational length can be taken.Receiving terminal passes through indicated by each LI bit lengths taken and #LI LI number, you can know the initial position of data.By the above method, the analyzing efficiency for receiving end data can be effectively improved. Wherein, further included in protocol Data Unit PDU and/or PDU the segmentation header of the second user face entity it is at least following it One：Data or control configured information, weight segment identification configured information, state report feedback configured information, segmentation configured information, sequence Row number, be finally segmented configured information, grading excursion configured information, the first configured information, the second Length Indication information.

The embodiment 2 of the preferred embodiment of the present invention

Fig. 7 is the byte number that second user interface entities according to the preferred embodiment of the invention indicate Changeable head by #LI Schematic diagram.In Fig. 7, by increasing in the header that second user en-tity protocol data the unit PDU and/or PDU are segmented Add the first Length Indication information #LI to reach reduction data processing complexity, improve the purpose of data-handling efficiency, described first Length Indication information is located in the header of second user face entity the protocol Data Unit PDU and/or PDU segmentation, it goes out Indicated whether now by the first configured information, the first Length Indication information described in Fig. 7 is used for that represent can in PDU header information Become the byte number of head.The bit length that the first Length Indication information takes is variable, for example its length can take a byte Or two byte lengths.The byte number for the Changeable head that receiving terminal is represented by obtaining #LI, you can know the initial position of data. By the above method, the analyzing efficiency for receiving end data can be effectively improved.Wherein, the agreement number of the second user face entity It is segmented according to unit PDU and/or PDU in header and further includes at least one：Data or control configured information, weight segment identification Configured information, state report feedback configured information, segmentation configured information, sequence number, be finally segmented configured information, grading excursion and refer to Show information, the first configured information, the second Length Indication information.

The embodiment 3 of the preferred embodiment of the present invention

Fig. 8 is that second user interface entities according to the preferred embodiment of the invention indicate that PDU and/or PDU is segmented by #LI Number schematic diagram.In Fig. 8, believed by the head being segmented in second user en-tity protocol data the unit PDU and/or PDU Increase by the first Length Indication information #LI in breath to reach reduction data processing complexity, improve the purpose of data-handling efficiency, institute State the header that the first Length Indication information is located at second user face entity the protocol Data Unit PDU and/or PDU segmentation In, it is indicated whether appearance by the first configured information, and in Fig. 8, the first Length Indication information is used to represent described The number of first user entity protocol Data Unit (such as PDCP PDU) PDU and/or PDU segmentation.First length refers to Show that the bit length that information takes is variable, for example its length can take a byte or two byte lengths.Receiving terminal is by obtaining Take the PDU that #LI is represented and/or the number that PDU is segmented, you can know the initial position of data and the cascaded message of data.Pass through The above method, can effectively improve the analyzing efficiency for receiving end data.Wherein, the protocol data list of the second user face entity At least one is further included in first PDU and/or PDU segmentation header：Data or control configured information, weight segment identification instruction Information, state report feedback configured information, segmentation configured information, finally sequence number, segmentation configured information, grading excursion instruction letter Breath, the first configured information, the second Length Indication information.

The embodiment 4 of the preferred embodiment of the present invention

Fig. 9-a are the specific forms of second user face entity protocol Data Unit PDU according to the preferred embodiment of the invention One schematic diagram one.Fig. 9-b are the specific of second user face entity protocol Data Unit PDU according to the preferred embodiment of the invention The schematic diagram two of form one.The second user face entity is to from described every time before scheduling authorization instruction is received The complete protocol Data Unit PDU (such as PDCP PDU) of first user entity is cascaded, and is receiving scheduling authorization instruction Afterwards, the resource size that the second user face entity is indicated according to authorizing may need the agreement to the second user face entity Data cell (such as RLC PDU) carries out staged operation again, when there is staged operation again, it is necessary to be segmented configured information (such as LSF again And SO) segmentation instruction is carried out, it is necessary to which explanation, can be the header of only first PDU segmentation for PDU is segmented again In with complete initial p DU headers content (including the first Length Indication information and/or the second Length Indication information and/ Or grading excursion configured information), as shown in Fig. 9-a, the first Length Indication letter can not be included in the header of other PDU segmentations Breath and/or the second Length Indication information, as shown in Fig. 9-b.Through the above scheme, header overhead can be saved.Except this, in header In can carry segmentation configured information S fields come show instruction protocol Data Unit be PDU or PDU segmentation, facilitate receiving terminal Parsing to protocol Data Unit, the PDU structures of second user face entity at this time are as shown in Fig. 9-a/9-b.Specifically describe such as Under：

At least one of is included in the protocol data unit head information of the second user face entity：First Length Indication Information #LI, sequence number SN, data or control configured information D/C, state report feedback configured information P, be segmented again configured information S, Finally it is segmented configured information LSF and grading excursion configured information SO, the first configured information, the second Length Indication information.Wherein, institute It is variable to state the bit length that the first Length Indication information and/or sequence number take, it is referred to whether appearance by the first configured information Show.

The first Length Indication information is used to indicate one of following information：For indicating to participate in the first of cascade or multiplexing The quantity of the PDU of user entity；The second length carried in protocol Data Unit PDU for indicating second user face entity The quantity of configured information, wherein, each second Length Indication information is used to indicate that each and second Length Indication is believed Cease the size of the PDU of corresponding first user entity；It is used to refer to for indicate to include in second user face entity PDU Show the total length in the domain of the PDU information of the first user entity；For indicating the first Length Indication information and first first use Byte number between the face entity protocol Data Unit PDU of family.

The specific explanations of field in protocol Data Unit PDU and/or PDU the segmentation header in the second user face are such as Under：

Data/control D/C (Data/Control) takes 1 bit space, for indicating the second user face entity Protocol Data Unit is that control PDU or data PDU, implication are identical with LTE system.

P (Polling) takes 1 bit space, for indicating whether opposite end needs condition report feedback, implication and LTE systems Unite identical.

S (Segment) takes 1 bit space, for showing that instruction protocol Data Unit is PDU or PDU segmentations.

First configured information, for indicating whether the first Length Indication information #LI occurs.

SN (Sequence Number), for indicating that second user face entity AMD PDU or the UMD PDU is corresponding Sequence number, implication is identical with LTE system, its length is variable.

LSF (Last Segment Indicator) takes 1 bit space, for indicating the second user face entity Whether the last byte of AMD PDU segmentations is corresponding with the last byte of an AMD PDU, and implication is identical with LTE system.

SO (Segment Offset) takes 15 bit lengths in figure 6, for indicating the second user face entity AMD PDU are segmented the offset relative to initial AMD PDU, and implication is identical with LTE system；

#LI, the first Length Indication information, the bit length that it takes is variable, for example takes a byte or two bytes Or other suitable bit length spaces, for indicating one of following information：For indicating that participating in the first of cascade or multiplexing uses The quantity of the PDU of family face entity；The second length carried in protocol Data Unit PDU for indicating second user face entity refers to Show the quantity of information, wherein, each second Length Indication information is used to indicate each and the second Length Indication information The size of the PDU of corresponding first user entity；It is used to indicate for indicate to include in second user face entity PDU The total length in the domain of the PDU information of the first user entity；For indicating the first Length Indication information and first the first user Byte number between face entity protocol Data Unit PDU.

The bit length that LI (Length Indicator) takes is variable, 16 bit lengths is given in example, LI1 is arrived LIn is respectively used to first byte number to nth data segmentation in instruction data field, and implication is identical with LTE system.

The embodiment 5 of the preferred embodiment of the present invention

Figure 10 is the specific form two of second user face entity protocol Data Unit PDU according to the preferred embodiment of the invention Schematic diagram.Embodiment 5 is similar with the LTE technologies in correlation technique, and different parts are, the second of preferred embodiment 5 uses Family face entity realizes quick data parsing by carrying the first Length Indication information in header, in receiving terminal.Described At least one of is included in the protocol data unit head information of two user entities：First Length Indication information #LI, sequence number SN, data or control configured information D/C, state report feedback configured information P, be segmented configured information S, finally segmentation instruction letter again Cease LSF and grading excursion configured information SO, the first configured information, the second Length Indication information, segmentation configured information FI.Wherein, The bit length that the first Length Indication information and/or sequence number take is variable, it passes through the first configured information whether appearance Instruction.The implication of other fields is similar with LTE.

The embodiment 6 of the preferred embodiment of the present invention

Figure 11 is the transmitting-receiving flow diagram of protocol Data Unit according to the preferred embodiment of the invention.In Figure 11, send The second user face entity of end equipment is indicated according to the scheduling of the first user entity, according to second user face entity protocol data The group packet protocol of unit, carries out the group bag generating process of data packet, and specific steps are described as follows：

The step of Figure 11 one, sending ending equipment generation second user face entity protocol Data Unit PDU and/or PDU segmentation.

The sending ending equipment either base station, or terminal, or other shapes with protocol stack group packet function The communication equipment of formula.

The second user face entity in the present embodiment 6 is functionally similar to the RLC entity functions in LTE system, described Second user face entity function includes at least one：The cascade of SDU, the segmentation again of PDU, SDU are recombinated, reordered, automatically Repeat requests (Automatic Repeat reQuest, referred to as ARQ).

The protocol data unit head information of the second user face entity further includes at least one：Data or control refer to Show information, weight segment identification configured information, state report feedback configured information, segmentation configured information, be finally segmented configured information, Grading excursion configured information.

The second Length Indication information either octet alignment, i.e., the bit long of described second Length Indication information The integral multiple for 8 is spent, such as 16 bit longs.Or the second Length Indication information is 4 halfbyte-aligneds, such as 12 bit longs.

The number of the second Length Indication in the extension field of the protocol data unit head information of the second user face entity Variable, the number of the service data unit of the second user face entity with participating in cascade is corresponding.

The protocol Data Unit PDU and/or PDU of second user face entity are segmented by the step of Figure 11 two, sending ending equipment It is sent to receiving terminal.

The delivery section by the protocol Data Unit PDU of the second user face entity packaged in step 1 and/or PDU segmentations are sent to receiving terminal.

The protocol Data Unit that the sending ending equipment is sent either new biography data packet, or data packet is retransmitted, when The second user face entity, can be to the number of re-transmission from during the notice instruction of first user entity received transmission opportunity It is segmented to form PDU segmentations again according to bag.

The step of Figure 11 three, receiving terminal dock the received protocol Data Unit PDU and/or PDU segmentation and are parsed.

The receiving terminal carries out the reception of data packet according to the frame structure of the second user face entity protocol Data Unit Processing, to needing to generate state report, generates instruction according to state report and generates corresponding state report.

The quantity or second user for the second Length Indication information that the receiving terminal is represented according to the first Length Indication information The total length for being used to indicate the domain of the PDU information of the first user entity or the first Length Indication letter included in face entity PDU Byte number between breath and first the first user entity protocol Data Unit PDU, so that the receiving terminal can be quick Know the initial position of data.

The receiving terminal can quickly indicate the agreement of the second user face entity by being segmented configured information S fields again Data cell is PDU or PDU segmentations.

Alternatively, receiving terminal knows the second user face entity by parsing last segmentation instruction LSF and grading excursion SO Protocol Data Unit be PDU or PDU segmentation.

The step of Figure 11 four, receiving terminal feed back protocol Data Unit PDU and/or the PDU segmentation to sending ending equipment Receive confirmation message.

The reception confirmation message carries the agreement for being used to indicate whether to be successfully received the second user face entity The reception state instruction of data cell PDU and/or PDU segmentation.When reception state instruction is unsuccessfully received the second user Protocol Data Unit PDU and/or the PDU segmentation of face entity, then, sending ending equipment can retransmit the second user face entity Protocol Data Unit PDU and/or PDU segmentation.

The embodiment 7 of the preferred embodiment of the present invention

Figure 12 is the schematic diagram one that the second user face entity of the preferred embodiment of the present invention cascades data packet in advance. In the embodiment, first user entity (such as PDCP) and the second user face entity (such as RLC) use are identical Data buffer storage buffer, the second user face entity precalculates each protocol data list in each first user entity Size (such as PDCP PDU size) institute of member, and corresponding length information is preserved, at the same time, the second user face is also All data packets cached on each logic channel are cascaded in advance, the data packet for participating in cascade is complete agreement Data cell (such as complete RLC SDU), is described in detail below：

The function that the second user face entity is realized before scheduling authorization is received includes：

1. send the Service Data Unit (such as RLC SDUs) in caching and retransmit the protocol Data Unit (ratio in caching Such as RLC PDUs) can constantly it be updated；

, wherein it is desired to explanation, retransmits PDU and controls the transmission priority of PDU to be higher than new biography PDU.

2. calculate the length of the corresponding each protocol Data Unit (such as PDCP PDU) of each first user entity Degree, and preserve corresponding length information；

3. all data packets cached on pair each logic channel cascade；

Wherein, each protocol Data Unit for participating in cascade is complete PDU (such as complete PDCP PDU).

4. determine the sequence number of the PDU of next second user face entity.

The function that the second user face entity is realized after scheduling authorization is received includes：

1. the data package size that the second user face entity is distributed in being indicated according to scheduling authorization, from the agreement cascaded in advance Interception one or more SDU in data cell (such as RLC SDUs), and the Length Indication information and sequence that will be precalculated Number SN is added in RLC head；

Wherein, one and/or multiple RLC SDU of the interception is complete RLC SDU.

2. protocol Data Unit (such as RLC PDUs) is sent to the 3rd user plane by the second user face entity Entity (such as MAC PDU).

3. the 3rd user entity is multiplexed the RLC PDUs on multiple logic channels.Deficiency is transmitted The bit of block size is filled using padding.

The embodiment 8 of the preferred embodiment of the present invention

Figure 13 is the schematic diagram two that the second user face entity of the preferred embodiment of the present invention cascades data packet in advance.It is real Apply that example 8 is similar to Example 7, and difference is, the second user face entity may need after scheduling authorization instruction is received Last Service Data Unit (such as RLC SDU) is segmented.It is described in detail below：

Stating the function that second user face entity is realized before scheduling authorization is received includes：

3. all data packets cached on pair each logic channel cascade；

4. determine the sequence number of the PDU of next second user face entity.

1. the data package size that the second user face entity is distributed in being indicated according to scheduling authorization, from the agreement cascaded in advance Interception one or more SDU and/or SDU segmentations in data cell (such as RLC SDUs), and the length precalculated is referred to Show that information and sequence number SN are added in RLC head；

Wherein, the form of the RLC SDU to participating in cascade is not defined, that is to say, that the second user face entity root According to the resource size of scheduling authorization, it may be necessary to which last the RLC SDU for participating in cascade is segmented.The segmentation passes through Segmentation configured information LSF and SO is indicated again.

The embodiment 9 of the preferred embodiment of the present invention

Figure 14 is the schematic diagram three that the second user face entity of the preferred embodiment of the present invention cascades data packet in advance. In the embodiment, second user face entity data packet (such as PDCP PDU) level to being cached on each logic channel in advance Multiple second user face entity protocol Data Units (such as RLC PDU) of fixed size are unified into, the cascade process can It can need to be segmented last protocol Data Unit (such as RLC SDU).The second user face entity is receiving tune Degree authorizes the function of realizing before to include：

2. multiple second user faces of fixed size are unified into the packet-level cached on each logic channel in advance En-tity protocol data unit (such as RLC PDU).

Wherein, the form of the RLC SDU to participating in cascade is not defined, it may be necessary to participating in last cascaded RLC SDU are segmented, to ensure that the size of each RLC PDU is fixed.

1. the data package size that the second user face entity is distributed in being indicated according to scheduling authorization, it may be necessary to each Last RLC PDU on logic channel in multiple RLC PDU is segmented to meet scheduling requirement again；

3. the 3rd user entity is multiplexed the RLC PDUs on multiple logic channels.

The embodiment 10 of the preferred embodiment of the present invention

Figure 15 is the schematic diagram four that the second user face entity of the preferred embodiment of the present invention cascades data packet in advance. In the embodiment, the second user face entity is by the maximum allowable PDU sizes number to being cached on each logic channel in advance One and/or multiple second user face entity protocol Data Units (such as RLC are cascaded into according to bag (such as PDCP PDU) PDU), it is necessary to which explanation, the protocol Data Unit (such as RLC SDU) for participating in cascade is complete RLC SDU.Described second The function that user entity is realized before scheduling authorization is received includes：

2. the packet-level cached on each logic channel is unified into advance by maximum allowable PDU sizes one and/or Multiple second user face entity protocol Data Units (such as RLC PDU).

Wherein, the protocol Data Unit (such as RLC SDU) for participating in cascade is complete RLC SDU, that is to say, that RLC PDU is only comprising the cascade to complete RLC SDU.

1. the data package size that the second user face entity is distributed according to authorizing in instruction, it may be necessary to logic channel Last RLC PDU in upper multiple RLC PDU is segmented to meet scheduling requirement again；

3. the 3rd user entity is multiplexed the RLC PDUs on multiple logic channels.

The embodiment 11 of the preferred embodiment of the present invention

Figure 16 is second user face entity protocol data bag (such as MAC PDU) signal according to the preferred embodiment of the invention Figure.In order to enable receiving terminal fast positioning to improve data analyzing efficiency to data field, be given in preferred embodiment 11 specific Real-time proposals, as shown in figure 16, increase in the header of the protocol data bag (such as MAC PDU) of the second user face entity Add the first Length Indication information #LI, the first Length Indication information is used to indicating the first Length Indication information and first the Byte number between one user entity protocol Data Unit PDU (such as RLC PDU), i.e., described first Length Indication information refer to Show the length of some subheader and/or MAC CE.Whether the first Length Indication information occurs referring to by the first configured information E Show, after receiving terminal obtains the first Length Indication information #LI, skip the first Length Indication information and first the first user entity Byte number between protocol Data Unit PDU (such as RLC PDU), is directly targeted to data field, in Figure 16, receives directly First the first user entity protocol Data Unit PDU1 is navigated to, so as to improve data analyzing efficiency.

Protocol Data Unit processing method is proposed using the present invention, is believed in the protocol data unit head of second user face entity Increase by the first Length Indication information in breath, the first Length Indication information is used to indicate how many second Length Indication thereafter Information follows, and can effectively reduce the data group bag complexity of the protocol Data Unit of second user face entity, improves data solution Efficiency is analysed, reduces processing delay.

Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation The method of example can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but very much In the case of the former be more preferably embodiment.Based on such understanding, technical scheme is substantially in other words to existing The part that technology contributes can be embodied in the form of software product, which is stored in a storage In medium (such as ROM/RAM, magnetic disc, CD), including some instructions are used so that a station terminal equipment (can be mobile phone, calculate Machine, server, or network equipment etc.) perform method described in each embodiment of the present invention.

Embodiment two

Transmission and the reception device of a kind of protocol Data Unit are additionally provided in the present embodiment, which is used for realization Embodiment and preferred embodiment are stated, had carried out repeating no more for explanation.As used below, term " module " can be with Realize the combination of the software and/or hardware of predetermined function.Although the described device of following embodiments is preferably come real with software It is existing, but hardware, or the realization of the combination of software and hardware is also what may and be contemplated.

According to another embodiment of the invention, a kind of dispensing device of protocol Data Unit is additionally provided, applied to hair Sending end equipment, the device include：

Sending module, for sending PDU or PDU points of the protocol Data Unit of second user face entity to receiving device Section, wherein, the first Length Indication information is provided with the header of PDU or the PDU segmentation of the second user face entity, its In, the first Length Indication information is used to indicate one of following information：For indicating the first user for participating in cascade or multiplexing The quantity of the PDU of face entity；The second Length Indication carried in protocol Data Unit PDU for indicating second user face entity The quantity of information, wherein, each second Length Indication information is used to indicate each and the second Length Indication information pair The size of the PDU for first user entity answered；It is used to indicate for indicate to include in second user face entity PDU The total length in the domain of the PDU information of one user entity；For indicating the first Length Indication information and first the first user plane Byte number between en-tity protocol data unit PDU.

Alternatively, the first user entity is PDCP, and second user face entity is RLC；Alternatively, the first user entity is RLC, second user face entity are MAC.

According to another embodiment of the invention, a kind of reception device of protocol Data Unit is additionally provided, applied to connecing Receiving end equipment, the device include：

Receiving module, the protocol Data Unit PDU or PDU of the second user face entity for receiving sending ending equipment transmission Segmentation, wherein, the first Length Indication information is provided with the header of PDU or the PDU segmentation of the second user face entity, its In, the first Length Indication information is used to indicate one of following information：For indicating the first user for participating in cascade or multiplexing The quantity of the PDU of face entity；The second Length Indication carried in protocol Data Unit PDU for indicating second user face entity The quantity of information, wherein, each second Length Indication information is used to indicate each and the second Length Indication information pair The size of the PDU for first user entity answered；It is used to indicate for indicate to include in second user face entity PDU The total length in the domain of the PDU information of one user entity；For indicating the first Length Indication information and first the first user plane Byte number between en-tity protocol data unit PDU；

Parsing module, for parsing the PDU or described PDU segmentations.

It should be noted that above-mentioned modules can be realized by software or hardware, for the latter, Ke Yitong In the following manner realization is crossed, but not limited to this：Above-mentioned module is respectively positioned in same processor；Alternatively, above-mentioned modules are with any The form of combination is located in different processors respectively.

Embodiment three

According to another embodiment of the invention, a kind of sending/receiving system of protocol Data Unit is additionally provided, this is System includes：

Sending ending equipment, for sending PDU or PDU points of the protocol Data Unit of second user face entity to receiving device Section, wherein, the first Length Indication information is provided with the header of PDU or the PDU segmentation of the second user face entity, its In, first Length Indication is used to indicate one of following information：For indicating that the first user plane for participating in cascade or multiplexing is real The quantity of the PDU of body；The the second Length Indication information carried in protocol Data Unit PDU for indicating second user face entity Quantity, wherein, each second Length Indication information is used to indicate each corresponding with the second Length Indication information The size of the PDU of first user entity；It is used to indicate that first to use for indicate to include in second user face entity PDU The total length in the domain of the PDU information of family face entity；For indicating the first Length Indication information and first the first user entity Byte number between protocol Data Unit PDU.

The receiving device, for parsing the PDU or described PDU segmentations.

Example IV

The embodiment of the present invention additionally provides a kind of storage medium.Alternatively, in the present embodiment, above-mentioned storage medium can The program code for performing following steps to be arranged to storage to be used for：

S1, sending ending equipment send PDU or PDU points of the protocol Data Unit of second user face entity to receiving device Section, wherein, the first Length Indication information is provided with the header of PDU or the PDU segmentation of the second user face entity, its In, the first Length Indication information is used to indicate one of following information：For indicating the first user for participating in cascade or multiplexing The quantity of the PDU of face entity；The second Length Indication carried in protocol Data Unit PDU for indicating second user face entity The quantity of information, wherein, each second Length Indication information is used to indicate each and the second Length Indication information pair The size of the PDU for first user entity answered；It is used to indicate for indicate to include in second user face entity PDU The total length in the domain of the PDU information of one user entity；For indicating the first Length Indication information and first the first user plane Byte number between en-tity protocol data unit PDU.

S2, receiving device receive the protocol Data Unit PDU or PDU for the second user face entity that sending ending equipment is sent Segmentation, wherein, the first Length Indication information is provided with the header of PDU or the PDU segmentation of the second user face entity, its In, the first Length Indication information is used to indicate one of following information：For indicating the first user for participating in cascade or multiplexing The quantity of the PDU of face entity；The second Length Indication carried in protocol Data Unit PDU for indicating second user face entity The quantity of information, wherein, each second Length Indication information is used to indicate each and the second Length Indication information pair The size of the PDU for first user entity answered；It is used to indicate for indicate to include in second user face entity PDU The total length in the domain of the PDU information of one user entity；For indicating the first Length Indication information and first the first user plane Byte number between en-tity protocol data unit PDU；

S3, the receiving device parse the PDU or described PDU segmentations.

Alternatively, in the present embodiment, above-mentioned storage medium can include but is not limited to：USB flash disk, read-only storage (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. is various can be with the medium of store program codes.

Alternatively, in the present embodiment, processor performs above-mentioned implementation according to stored program code in storage medium Method and step in example.

Alternatively, the specific example in the present embodiment may be referred to described in above-described embodiment and optional embodiment Example, details are not described herein for the present embodiment.

Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and formed Network on, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored Performed in the storage device by computing device, and in some cases, can be with different from shown in order execution herein The step of going out or describing, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or Step is fabricated to single integrated circuit module to realize.Combined in this way, the present invention is not restricted to any specific hardware and software.

The foregoing is only a preferred embodiment of the present invention, is not intended to limit the invention, for the skill of this area For art personnel, the invention may be variously modified and varied.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should all be included in the protection scope of the present invention.

Claims

A kind of 1. sending method of protocol Data Unit PDU, it is characterised in that including：

The protocol Data Unit PDU or PDU that sending ending equipment sends second user face entity to receiving device are segmented, wherein, The first Length Indication information is provided with the header of PDU or the PDU segmentation of the second user face entity, wherein, described the One Length Indication information is used to indicate one of following information：

Quantity for the PDU for indicating to participate in cascade or the first user entity being multiplexed；

The quantity of the second Length Indication information carried in protocol Data Unit PDU for indicating second user face entity, its In, each second Length Indication information is used to indicate that each corresponding with the second Length Indication information described first uses The size of the PDU of family face entity；

For the total of the domain for being used to indicate the PDU information of the first user entity that indicates to include in second user face entity PDU Length；

For indicating the byte between the first Length Indication information and first the first user entity protocol Data Unit PDU Number.
2. according to the method described in claim 1, it is characterized in that,

First user entity is PDCP, and second user face entity is RLC；

Alternatively, the first user entity is RLC, second user face entity is MAC.
3. according to the method described in claim 1, it is characterized in that, possess in the second user face entity to the first user plane When the PDU of entity carries out fragmentation feature, the PDU of first user entity includes complete first user entity at the same time The PDU of PDU and the first user entity is segmented.
4. according to the method described in claim 3, it is characterized in that, the second user face entity is only real to second user face The PDU of body is segmented again when, the PDU of the first user entity included to the PDU of the second user face entity divides Section.
5. the according to the method described in claim 1, it is characterized in that, domain of the PDU information of the first user entity of the instruction Including at least the domain of the second Length Indication information, wherein, each second Length Indication information be used to indicate each with The size of the PDU of corresponding first user entity of the second Length Indication information.
6. according to the method described in claim 1, it is characterized in that, possess in the second user face entity to the first user plane When the PDU of entity is segmented or weighs fragmentation feature, it is segmented for the PDU of the first user entity, the first user of the instruction The domain of the PDU information of face entity also includes the first user entity PDU segment informations domain, wherein, each first user plane Entity PDU segment informations domain is used to indicate each with the first user entity PDU segment informations domain corresponding described first The PDU of user entity is segmented the positional information in former PDU.
7. according to the method described in claim 1, it is characterized in that, comprising the in the second user face entity PDU header information One configured information, wherein, first configured information is used to indicate whether to set first length to refer in the header Show information.
8. according to the method described in claim 1, it is characterized in that, in the second user face entity to second user face entity PDU when being segmented again, second user face entity includes one below to the processing mode of the first Length Indication information：

Described first is included in some segmentation of second user face entity only in some segmentations of second user face entity PDU Length Indication information；At this time, the value of the first Length Indication information is equal to the complete PDU institutes of the second user face entity before segmentation Comprising the first Length Indication information value；

Second user face entity is believed in one or more segmentations of second user face entity PDU comprising first Length Indication Breath, at this time, the value of the first Length Indication information by included in the second user face entity PDU segmentations after being segmented the One user entity PDU recalculates to obtain.
A kind of 9. method of reseptance of protocol Data Unit PDU, it is characterised in that including：

Receiving device receives protocol Data Unit PDU or the PDU segmentation for the second user face entity that sending ending equipment is sent, its In, the first Length Indication information is provided with the header of PDU or the PDU segmentation of the second user face entity, wherein, it is described First Length Indication information is used to indicate one of following information：

Quantity for the PDU for indicating to participate in cascade or the first user entity being multiplexed；

The quantity of the second Length Indication information carried in protocol Data Unit PDU for indicating second user face entity, its In, each second Length Indication information is used to indicate that each corresponding with the second Length Indication information described first uses The size of the PDU of family face entity；

For the total of the domain for being used to indicate the PDU information of the first user entity that indicates to include in second user face entity PDU Length；

For indicating the byte between the first Length Indication information and first the first user entity protocol Data Unit PDU Number；

The receiving device parses the PDU or described PDU segmentations.
10. according to the method described in claim 9, it is characterized in that, the receiving device receives the sending ending equipment hair The second user face entity sent PDU segmentation when, the PDU segmentation in the first Length Indication information value implication be with It is one of lower：

The implication of the first Length Indication value in the PDU segmentations is the complete PDU institutes of the second user face entity before segmentation Comprising the first Length Indication information value；

The implication of the first Length Indication value in the PDU segmentations is by the second user face entity PDU segmentations after being segmented Comprising the first user entity PDU recalculate to obtain.
A kind of 11. dispensing device of protocol Data Unit PDU, applied to sending ending equipment, it is characterised in that including：

Sending module, protocol Data Unit from second user face entity to receiving device PDU or PDU for sending are segmented, its In, the first Length Indication information is provided with the header of PDU or the PDU segmentation of the second user face entity, wherein, it is described First Length Indication information is used to indicate one of following information：

Quantity for the PDU for indicating to participate in cascade or the first user entity being multiplexed；

The quantity of the second Length Indication information carried in protocol Data Unit PDU for indicating second user face entity, its In, each second Length Indication information is used to indicate that each corresponding with the second Length Indication information described first uses The size of the PDU of family face entity；

For the total of the domain for being used to indicate the PDU information of the first user entity that indicates to include in second user face entity PDU Length；

For indicating the byte between the first Length Indication information and first the first user entity protocol Data Unit PDU Number.
12. according to the devices described in claim 11, it is characterised in that real to second user face in the second user face entity The PDU of body is segmented again when, processing of the second user face entity to the first Length Indication is one of the following：

Described first is included in some segmentation of second user face entity only in some segmentations of second user face entity PDU Length Indication information；At this time, the value of the first Length Indication information is equal to the complete PDU institutes of the second user face entity before segmentation Comprising the first Length Indication information value；

Second user face entity is believed in one or more segmentations of second user face entity PDU comprising first Length Indication Breath, at this time, the value of the first Length Indication information by included in the second user face entity PDU segmentations after being segmented the One user entity PDU recalculates to obtain.
A kind of 13. reception device of protocol Data Unit PDU, applied to receiving device, it is characterised in that including：

Receiving module, PDU or PDU points of the protocol Data Unit of the second user face entity for receiving sending ending equipment transmission Section, wherein, the first Length Indication information is provided with the header of PDU or the PDU segmentation of the second user face entity, its In, the first Length Indication information is used to indicate one of following information：

Quantity for the PDU for indicating to participate in cascade or the first user entity being multiplexed；

The quantity of the second Length Indication information carried in protocol Data Unit PDU for indicating second user face entity, its In, each second Length Indication information is used to indicate that each corresponding with the second Length Indication information described first uses The size of the PDU of family face entity；

For the total of the domain for being used to indicate the PDU information of the first user entity that indicates to include in second user face entity PDU Length；

For indicating the byte between the first Length Indication information and first the first user entity protocol Data Unit PDU Number；

Parsing module, for parsing the PDU or described PDU segmentations.
14. the reception device according to claim 13, it is characterised in that the receiving module receives what sending ending equipment was sent Second user face entity protocol Data Unit PDU segmentation when, the PDU segmentation in the first Length Indication value implication be with It is one of lower：

The implication of the first Length Indication value in the PDU segmentations is the complete PDU institutes of the second user face entity before segmentation Comprising the first Length Indication information value；

The implication of the first Length Indication value in the PDU segmentations is by the second user face entity PDU segmentations after being segmented Comprising the first user entity PDU recalculate to obtain.
A kind of 15. sending/receiving system of protocol Data Unit PDU, it is characterised in that including：

Sending ending equipment, protocol Data Unit from second user face entity to receiving device PDU or PDU for sending are segmented, Wherein, the first Length Indication information is provided with the header of PDU or the PDU segmentation of the second user face entity, wherein, institute The first Length Indication is stated to be used to indicate one of following information：

Quantity for the PDU for indicating to participate in cascade or the first user entity being multiplexed；

The quantity of the second Length Indication information carried in protocol Data Unit PDU for indicating second user face entity, its In, each second Length Indication information is used to indicate that each corresponding with the second Length Indication information described first uses The size of the PDU of family face entity；

For the total of the domain for being used to indicate the PDU information of the first user entity that indicates to include in second user face entity PDU Length；

For indicating the byte between the first Length Indication information and first the first user entity protocol Data Unit PDU Number；

The receiving device, for parsing the PDU or described PDU segmentations.
16. system according to claim 15, it is characterised in that real to second user face in the second user face entity The PDU of body is segmented again when, processing of the second user face entity to the first Length Indication is one of the following：

Described first is included in some segmentation of second user face entity only in some segmentations of second user face entity PDU Length Indication information；At this time, the value of the first Length Indication information is equal to the complete PDU institutes of the second user face entity before segmentation Comprising the first Length Indication information value；

Second user face entity is believed in one or more segmentations of second user face entity PDU comprising first Length Indication Breath, at this time, the value of the first Length Indication information by included in the second user face entity PDU segmentations after being segmented the One user entity PDU recalculates to obtain.