CN109691061A

CN109691061A - A kind of method and apparatus for transmitting data

Info

Publication number: CN109691061A
Application number: CN201780054231.2A
Authority: CN
Inventors: 唐海
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2017-02-10
Filing date: 2017-02-10
Publication date: 2019-04-26
Also published as: WO2018145301A1

Abstract

The embodiment of the present application discloses a kind of method and apparatus for transmitting data, this method comprises: first packet encapsulation of wireless spread-spectrum technology (RLC) protocol layer is multiple segmentations by transmitting terminal, this is segmented into just segmentation or is segmented again, the packet header of each segmentation in multiple segmentation includes the first indication field, which is used to indicate sequence of the corresponding segment in multiple segmentation；The transmitting terminal sends multiple segmentation to receiving end.The method and apparatus of the embodiment of the present application can reduce system signaling expense.

Description

A kind of method and apparatus for transmitting data

Technical field

The invention relates to the communications fields, and more particularly, to a kind of method and apparatus for transmitting data.

Background technique

In long term evolution (Long Term Evolution, LTE) in system, wireless spread-spectrum technology (Radio Link Control, RLC) there is the function of cascade (concatenation) and segmentation (segmentation) RLC service data unit (Service Date Unit, SDU) to match the transmission size that lower layer can be supported with this.Simultaneously, for retransmitting rlc protocol data cell (Protocol Data Unit, PDU), when lower layer cannot support the PDU size, rlc layer can also carry out further segmentation (re-segmentation) again to it and be adapted to the transmission size that lower layer can be supported with this.

In existing (the New Radio that newly eats dishes without rice or wine, NR) in discussing, the segmentation of segmentation and the re-transmission of initial transmission is indicated using the method for segmentation biasing (segmentation offset, SO), unifies the format in the packet header RLC under different cutting scenes with this.Since the bit number of SO is 15 or 16bit, cause the instruction expense in packet header very big.

Summary of the invention

In view of this, the embodiment of the present application provides a kind of method and apparatus for transmitting data, enable the correct restoring data in receiving end, and can greatly reduce instruction expense.

First aspect, provide a kind of method for transmitting data, this method comprises: the first packet encapsulation of wireless spread-spectrum technology rlc protocol layer is multiple segmentations by transmitting terminal, this is segmented into just segmentation or is segmented again, the packet header of each segmentation in multiple segmentation includes the first indication field, which is used to indicate sequence of the corresponding segment in multiple segmentation；The transmitting terminal sends multiple segmentation to receiving end.

Each segmentation is indicated using fragment sequence number, receiving end is enabled correctly to restore the data packet before segmentation according to fragment sequence number, and since segments is much smaller than byte number included by raw data packets, it is greatly reduced instruction expense.

Here the first data packet, which can be, just passes RLC SDU, is also possible to retransmit RLC PDU.Just segmentation is existing segmentation, and segmentation is existing re-segmentation again.

First indication field includes several bits, and the bit quantity is related with segments.The bit number that first indication field includes can also configure in advance, it may be considered that most conservative situation, that is, can be configured according to the maximum segment number occurred in existing segmentation.

Here transmitting terminal can be terminal device, be also possible to the network equipment, and similarly, receiving end can be terminal device, be also possible to the network equipment.

In one possible implementation, this method further include: the transmitting terminal determines maximum segment number corresponding with first data packet；First packet encapsulation is multiple segmentations by the transmitting terminal, comprising: first packet encapsulation is the multiple segmentation for being segmented number and being less than or equal to the maximum segment number by the transmitting terminal.

Optionally, the maximum segment number can be pre-configured by the network equipment, it is also possible to transmitting terminal to be determined before being segmented according to some transmission characteristics of data to be transmitted packet, for example, it may be according to the type of service of the data to be transmitted packet of mapping logical channels or be used for transmission the data to be transmitted packet bottom physical channel quality determine.

In one possible implementation, transmitting terminal can first determine maximum segment number, and be segmented according to maximum segment number, and indicate the maximum segment number to receiving end by the second indication field.And then it can be used as reference in data packet before reduction is segmented.

Transmitting terminal can also determine bit number shared by the first indication field according to maximum segment number.Such as, maximum segment number is 8, then transmitting terminal can configure the first indication field to 3bit, such receiving end is after receiving maximum segment number, it may determine that the serial number that first indication field instruction is obtained from next 3 bits, that is, fragment sequence number.

In one possible implementation, the data of first data packet are to retransmit data, the segmentation is attached most importance to segmentation, first data packet is segmentation at the beginning of one of first service data cell, the packet header of each segmentation further includes third indication field, the third indication field is used to indicate sequence of the first segmentation in multiple just segmentations of the first service data cell, this method further include: the serial number that the transmitting terminal is indicated according to the first indication field of the first segmentation determines the serial number of multiple third indication field instructions for retransmitting the heavy segmentation of each of segmentation.

Similarly, for retransmitting the instruction of segmentation, be segmented at the beginning of one of a service data unit if the data retransmitted belong to, then also needed in the packet header for retransmitting segmentation include the first segmentation fragment sequence number.Multiple re-transmission segmentation and other original multiple just segmentations being properly received can be reduced into a service data unit after receiving multiple re-transmission segmentation by receiving end so together.

In one possible implementation, the packet header of each segmentation further includes the 4th indication field, should 4th indication field be used to indicate corresponding segment whether be in multiple segmentation the last one segmentation.

Assuming that needing to be segmented there are two data packet, the first data packet and the second data packet.The multiple segmentations for the first data packet that transmitting terminal is sent out to receiving end are possible to be staggered with multiple segmentations of the second data packet, then it is to start restoring data packet or wait the subsequent segmentation for belonging to the same data packet that receiving end can determine on earth according to the 4th indication field.

In one possible implementation, the packet header of each segmentation further includes the 5th indication field, and it is that just segmentation is still segmented again that the 5th indication field, which is used to indicate corresponding segment,.

In one possible implementation, the packet header of each segmentation further includes the sequence number of the affiliated service data unit of the first data packet.

Second aspect, provide a kind of method for transmitting data, this method comprises: receiving end receives the multiple segmentations for the first data packet corresponding to wireless spread-spectrum technology rlc protocol layer that transmitting terminal is sent, this is segmented into just segmentation or is segmented again, the packet header of each segmentation in multiple segmentation includes the first indication field, which is used to indicate sequence of the corresponding segment in multiple segmentation；The receiving end determines first data packet according to first indication field.

Each segmentation is indicated using fragment sequence number, receiving end is enabled to restore the data packet before segmentation well according to fragment sequence number, and since segments is much smaller than byte number included by raw data packets, it is greatly reduced instruction expense.

In one possible implementation, this method further include: the receiving end determines maximum segment number corresponding with first data packet；The receiving end determines first data packet according to first indication field, comprising: the receiving end determines first data packet according to the maximum segment number and first indication field.

In one possible implementation, the receiving end determines maximum segment number corresponding with first data packet, include: the receiving end according to the type of service for the mapping logical channels for being used for transmission first data packet and/or be used for transmission the physical channel quality of first data packet, determines the maximum segment number.

In one possible implementation, which is terminal device, which determines maximum segment number corresponding with first data packet, comprising: the receiving end determines the maximum segment number from least one maximum segment number of network equipments configuration.

In one possible implementation, the packet header of each segmentation further includes the second indication field, which is used to indicate the maximum segment number.

In one possible implementation, this method further include: the receiving end determines the width of first indication field according to the maximum segment number；The receiving end determines first indication field from the packet header of corresponding segment according to the width of first indication field.

In one possible implementation, the data of first data packet are to retransmit data, the segmentation is attached most importance to segmentation, first data packet is segmentation at the beginning of one of first service data cell, the packet header of each segmentation further includes third indication field, the third indication field is used to indicate sequence of the first segmentation in multiple just segmentations of the first service data cell, the receiving end is according to first indication field, determine first data packet, include: the receiving end according to first indication field and the third indication field, determines first data packet.

In one possible implementation, the packet header of each segmentation further includes the 4th indication field, 4th indication field be used to indicate corresponding segment whether be in multiple segmentation the last one segmentation, the receiving end is according to first indication field, determine first data packet, include: the receiving end according to first indication field and the 4th indication field, determines first data packet.

In one possible implementation, the packet header of each segmentation further includes the 5th indication field, it is that just segmentation is still segmented again that 5th indication field, which is used to indicate corresponding segment, 4th indication field be used to indicate corresponding segment whether be in multiple segmentation the last one segmentation, the receiving end is according to first indication field, determine first data packet, comprising: the receiving end determines first data packet according to first indication field and the 5th indication field.

In one possible implementation, the packet header of each segmentation further includes the sequence number of first service data unit belonging to first data packet, the receiving end is according to first indication field, determine first data packet, include: the receiving end according to first indication field and the sequence number, determines first data packet.

The third aspect provides a kind of device, the method in any possible implementation for executing above-mentioned first aspect or first aspect.Specifically, which includes the unit for executing the method in any possible implementation of above-mentioned first aspect or first aspect.

Fourth aspect provides a kind of device, the method in any possible implementation for executing above-mentioned second aspect or first aspect.Specifically, which includes the unit for executing the method in any possible implementation of above-mentioned second aspect or second aspect.

5th aspect, provides a kind of device, which includes: memory, processor, input interface and output interface.Wherein, memory, processor, input interface and output interface are connected by bus system.For storing instruction, which is used to execute the instruction of memory storage, the method in any possible implementation for executing above-mentioned first aspect or first aspect to the memory.

6th aspect, provides a kind of device, which includes: memory, processor, input interface and output interface.Wherein, memory, processor, input interface and output interface are connected by bus system.For storing instruction, which is used to execute the instruction of memory storage to the memory, is used for Execute the method in any possible implementation of above-mentioned second aspect or second aspect.

7th aspect, provide a kind of computer storage medium, method for being stored as in any possible implementation for executing above-mentioned first aspect or first aspect, or computer software instructions used in the method in any possible implementation of above-mentioned second aspect or second aspect, it includes for executing program designed by above-mentioned aspect.

These aspects or other aspects of the application can more straightforward in the following description.

Detailed description of the invention

Fig. 1 shows the schematic diagram of one application scenarios of the embodiment of the present application.

Fig. 2 shows the schematic block diagrams of the method for the transmission data of the embodiment of the present application.

Fig. 3 shows the schematic block diagram of the indicating means of segmentation in the embodiment of the present application.

Fig. 4 shows another schematic block diagram of the indicating means of the re-segmentation of the embodiment of the present application.

Fig. 5 shows another schematic block diagram of the method for the transmission data of the embodiment of the present application.

Fig. 6 shows the schematic block diagram of the device of the transmission data of the embodiment of the present application.

Fig. 7 shows another schematic block diagram of the device of the transmission data of the embodiment of the present application.

Fig. 8 shows another schematic block diagram of the device of the transmission data of the embodiment of the present application.

Fig. 9 shows another schematic block diagram of the device of the transmission data of the embodiment of the present application.

Specific embodiment

Below in conjunction with the attached drawing in the embodiment of the present application, the technical scheme in the embodiment of the application is clearly and completely described.

It should be understood that, the technical solution of the embodiment of the present application can be applied to various communication systems, such as: global system for mobile telecommunications (Global System of Mobile communication, referred to as " GSM ") system, CDMA (Code Division Multiple Access, referred to as " CDMA ") system, wideband code division multiple access (Wideband Code Division Multiple Access, referred to as " WCDMA ") system, General Packet Radio Service (General Packet Radio Service, referred to as " GPRS "), long term evolution (Long Te Rm Evolution, referred to as " LTE ") system, LTE frequency division duplex (Frequency Division Duplex, referred to as " FDD ") system, LTE time division duplex (Time Division Duplex, referred to as " TDD "), Universal Mobile Communication System (Universal Mobile Telecommunication System, referred to as " UMTS "), global interconnection inserting of microwave (Worldwide Interoperability for Microwave Access, referred to as " WiMAX ") communication system or the 5G system in future etc..

Particularly, the technical solution of the embodiment of the present application can be applied to the various communication systems based on non-orthogonal multiple access technology, such as Sparse Code multiple access accesses (Sparse Code Multiple Access, referred to as " SCMA ") system, low-density signature (Low Density Signature, referred to as " LDS ") system etc., certain SCMA system and LDS system can also be referred to as other titles in the communications field；Further, the technical solution of the embodiment of the present application can be applied to the multicarrier transmission systems using non-orthogonal multiple access technology, for example, by using non-orthogonal multiple access technology orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, referred to as " OFDM "), filter bank multi-carrier (Filter Bank Multi-Carrier, referred to as " FBMC "), general frequency division multiplexing (Generalized Frequency Division Multiplexing, referred to as " GFDM "), filtered quadrature frequency division multiplexing (Filtered-OFDM, referred to as " F-OFDM " ) system etc..

Terminal device in the embodiment of the present application can refer to user equipment (User Equipment, UE), access terminal, subscriber unit, subscriber station, movement station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless telecom equipment, user agent or user apparatus.Access terminal can be cellular phone, wireless phone, session initiation protocol (Session Initiation Protocol, SIP) phone, wireless local loop (Wireless Local Loop, WLL it) stands, personal digital assistant (Personal Digital Assistant, PDA), handheld device with wireless communication function, it calculates equipment or is connected to other processing equipments of radio modem, mobile unit, wearable device, Public Land Mobile Network network (the Public Land Mobile Network of terminal device or the following evolution in the following 5G network, PLMN the terminal device etc. in), the embodiment of the present application is simultaneously It does not limit.

The network equipment in the embodiment of the present application can be for the equipment with terminal equipment in communication, the network equipment can be base station (the Base Transceiver Station in GSM or CDMA, BTS), base station (the NodeB being also possible in WCDMA system, NB), it can also be evolved base station (the Evolutional NodeB in LTE system, eNB or eNodeB), it can also be cloud Radio Access Network (Cloud Radio Access Network, CRAN) the wireless controller under scene, or the network equipment can be relay station, access point, mobile unit, the P of wearable device and the network equipment or the following evolution in future 5G network The network equipment etc. in LMN network, the embodiment of the present application does not limit.

Fig. 1 is the schematic diagram of one application scenarios of the embodiment of the present application.Communication system in Fig. 1 may include terminal device 10 and the network equipment 20.The network equipment 20 is used to provide communication service and core network access for terminal device 10, and terminal device 10 is by searching for the synchronization signal, broadcast that the network equipment 20 is sent Signal etc. and access network, to carry out and the communication of network.Arrow shown in Fig. 1 can indicate the uplink/downlink transmission carried out by the cellular link between terminal device 10 and the network equipment 20.

It should be understood that the transmitting terminal and receiving end in the embodiment of the present application can be terminal device and the network equipment in Fig. 1.The terminal device and terminal device being also possible in Internet of Things or vehicle net scene, can also be the network equipment and the network equipment in other application scenarios, the embodiment of the present application is to this not enough at restriction.For convenience, the embodiment of the present application is described by taking the interaction between terminal device and the network equipment as an example.

It will be appreciated by those skilled in the art that RLC has the function of that cascading and be segmented RLC SDU matches the transmission size that lower layer can be supported with this.In other words, in rlc protocol, the PDU on upper layer becomes the SDU of lower layer in lower layer, and segmentation/recombination, cascade/filling process has occurred.PDU is carrying of the SDU in RLC, and SDU is segmented or cascades, is subsequently filled in PDU, i.e. is exactly PDU after SDU encapsulation.

Encapsulation/decapsulation of PDU: in transmitting terminal, SDU is added into Protocol Control Information (Protocol Control Information, PCI), is packaged into PDU；In receiving end, the PDU received is decapsulated, removes PCI, is reduced into SDU.

SDU segmentation is usually that the bandwidth of lower channel is not able to satisfy the needs of transmitting SDU, by the way that a SDU is divided into multistage, is then packaged into PDU respectively and sends, ressemble into a SDU after receiving end is by these PDU decapsulation.

At present in LTE system, segmentation and re-segmentation are indicated respectively in two ways respectively, for segmentation, the packet header RLC is indicated with the instructions field of 2bit byte, and specifically, the instruction situation of the instructions field is as shown in table 1.

Table 1

Value	Indicate content
00	It is not segmented
01	The segmentation belongs to starting segment
10	The segmentation belongs to end segmentation
11	The segmentation is both not belonging to starting segment, is also not belonging to terminate segmentation

Above-mentioned indicating mode, to each only one general position of segmentation, if segments is fewer, such as 3 segmentations, then receiving end after receiving this three segmentations, can be very good reduction SDU.And the segmentation more for segments, such as have 4 segmentations, it is evident that there are two medial sections to cause receiving end that may restore then receiving end can not determine the sequencing of two medial sections The SDU of mistake.

For re-segmentation, using the SO instructions field of 1bit and the retransmission instruction (re-segmentation of 1bit, RF), wherein, RF instructions field is used to indicate the segmentation and belongs to segmentation or re-segmentation, and what SO was then indicated is the start byte of each segmentation belongs to which byte in original weight biography PDU data.Because byte that original PDU includes may be very much, so as to cause SO bit number just need it is bigger.For example, then the bit of SO is at least 10, current SO is 15bit or 16bit if including 1024 bytes in original PDU, the instruction expense in each heavy segmentation packet header is substantially increased.

Fig. 2 shows the schematic block diagrams of the method 100 of the transmission data of the embodiment of the present application.As shown in Fig. 2, the transmitting terminal can be the network equipment, base station specifically can be, this method 100 includes:

S110, first packet encapsulation of wireless spread-spectrum technology rlc protocol layer is multiple segmentations by transmitting terminal, this is segmented into just segmentation or is segmented again, and the packet header of each segmentation in multiple segmentation includes the first indication field, which is used to indicate sequence of the corresponding segment in multiple segmentation；

S120, the transmitting terminal send multiple segmentation to receiving end.

First aspect, for segmentation, when the RLC PDU size of media access control (Media Access Control, MAC) the layer instruction by the network equipment is less than RLC SDU, RLC entity will execute staged operation to RLC SDU, and the RLC PDU of generation can be adapted into.When being segmented to SDU, each segmentation is ranked up according to the position in former SDU, and add the first indication field in the serial number, that is, the embodiment of the present application in the packet header of each segmentation.It can segmentation number that is static or being semi-statically configured each SDU before the network equipment and terminal device.When there is multiple SDU to be segmented, receiving end can be configured receive is subsection receiing according to a complete SDU when each segmentation, that is without staggeredly between the segmentation of difference SDU, therefore, after receiving the identical quantity continuously configured of SDU sequence number and being to be segmented the segmentation of number, terminal device can restore multiple segmentations of the same SDU according to the serial number in the first indication field terminal device.

Second aspect, for re-segmentation, when the PDU of re-transmission can not be fitted to the total RLC PDU size indicated by MAC layer, RLC entity will be segmented again according to RLC PDU execution of this situation to re-transmission, and the RLC PDU of generation is allowed to be segmented again and can be adapted to.In this case, it is considered that the data in the PDU retransmitted are really the data in a SDU, similarly, the network equipment can be ranked up each heavy segmentation according to the position in former SDU, and the first indication field in the serial number, that is, the embodiment of the present application is added in the packet header of each heavy segmentation.It can segmentation number that is static or being semi-statically configured each re-transmission PDU before the network equipment and terminal device.There are multiple re-transmission PDU When needing to be segmented again, it is according to a complete heavy subsection receiing for retransmitting PDU when each heavy segmentation that receiving end, which can be configured, and received, that is without staggeredly between the different segmentations again for retransmitting PDU, therefore, after receiving the identical quantity continuously configured of SDU sequence number for retransmitting PDU and being to be segmented the segmentation again of number, terminal device can restore the same multiple heavy segmentations for retransmitting PDU according to the serial number in the first indication field terminal device.

Therefore, the method for the transmission data in the embodiment of the present application, enables the correct restoring data in receiving end, and can greatly reduce instruction expense.

Optionally, in the embodiment of the present application, this method further include: the transmitting terminal determines maximum segment number corresponding with first data packet；First packet encapsulation is multiple segmentations by the transmitting terminal, comprising: first packet encapsulation is the multiple segmentation for being segmented number and being less than or equal to the maximum segment number by the transmitting terminal.

Specifically, can not have to arrange maximum segment number in advance between the network equipment and terminal device, the network equipment includes the instructions field of an instruction maximum segment number, that is, the second indication field in the embodiment of the present application in segmentation packet header.The network equipment can determine maximum segment number according to some transmission characteristics etc., and SDU or re-transmission PDU can be packaged into multiple just segmentations according to maximum segment number or are segmented again by the network equipment after maximum segment number has been determined.For example, if maximum segment number is 4, then SDU or re-transmission PDU can be encapsulated as 1,2,3 or 4 segmentation by the network equipment.Similarly, for terminal device after receiving each segmentation, that is, can determine the same SDU or retransmit PDU maximum includes that 4 segmentations can be used as reference when reduction.

It should be understood that, it is above-mentioned also to mention, maximum segment number can be to be determined by transmission characteristic, specifically, the network equipment can determine that the maximum segment number, the network equipment can also determine the maximum segment number according to the bottom physical channel quality for being used for transmission the SDU or re-transmission PDU according to the type of service for the mapping logical channels for being used for transmission SDU or re-transmission PDU.For example, if the type of service of the mapping logical channels is network protocol voice (Voice over Internet Protocol, VoIP), it is contemplated that VoIP data packet is smaller, can configure a lesser maximum segment number for the data packet of this business；If physical channel situation is poor, a biggish segments can be configured.The network equipment can also determine maximum segment number, such as transmission mode etc. according to other transmission characteristics of the SDU or re-transmission PDU.The embodiment of the present application is not limited to this.

It should also be understood that maximum segment number can also be configured in advance by the network equipment.Specifically, the network equipment can configure identical maximum segment number to all logic channel, can also RLC PDU corresponding to Different Logic channel different maximum segment numbers is respectively configured.For example, the network equipment can configure in advance Multiple maximum segment numbers, it is assumed that the network equipment is configured with 4 maximum segment numbers 2,4,8 or 16 in advance, then the network equipment can select one of maximum segment number first from 4 maximum segment numbers when encapsulating multiple segmentations of the first data packet.

Optionally, in the embodiment of the present application, the packet header of at least one of multiple segmentation segmentation further includes the second indication field, which is used to indicate the maximum segment number.

The bit number of second indication field can be configured in advance, and maximum segment number and the corresponding relationship of the value in the second indication field can also configure in advance, that is which bit is the second indication field that instruction maximum segment number is known in advance in the network equipment and terminal device account for, and the maximum segment of the value instruction in second indication field counts to bottom is how many.For example, the instruction of 2bit can be configured, 4 kinds of maximum segment numbers are indicated, respectively 4,8,16 and 32, the value in corresponding second indication field is respectively 00,01,10 and 11.

For example, it can include the second indication field in the packet header that first in multiple segmentations is segmented, that is terminal device may know that maximum segment number is how many after receiving first segmentation, and sequential reduction when can refer to the maximum segment number.The packet header for being also possible to other segmentations in multiple segmentation includes the second indication field, is not construed as limiting here.

Optionally, in the embodiment of the present application, first data packet is to retransmit protocol Data Unit, the segmentation is attached most importance to segmentation, first data packet is segmentation at the beginning of one of first service data cell, the packet header of at least one of multiple segmentation segmentation further includes third indication field, the third indication field is used to indicate sequence of the first segmentation in multiple just segmentations of the first service data cell, this method further include: the serial number that the transmitting terminal is indicated according to the first indication field of the first segmentation, determine the serial number of multiple third indication field instructions for retransmitting the heavy segmentation of each of segmentation.

Specifically, if the network equipment is after having sent multiple just segmentations of a SDU, it is segmented and is retransmitted at the beginning of wherein having, so the first segment encapsulation can be multiple heavy segmentations by the network equipment, and the serial number of the serial number and the first segmentation in the packet header of each heavy segmentation including each heavy segmentation, the first segmentation is stored within a certain period of time in the network equipment, including each serial number being just segmented, terminal device is when cannot be correctly received the data that some is just segmented, it can be to the serial number of the first segmentation of network equipment feedback response, the serial number that so network equipment can be fed back according to terminal device determines the first segmentation for needing to retransmit, and then the first segmentation can directly be retransmitted, the first segment encapsulation can also be transmitted at multiple heavy segmentations.

Likewise it is possible to include third indication field in first packet header being segmented in multiple segmentations, that is to say, that terminal device may know that next multiple segmentations are after receiving first segmentation Belong to the first data packet (assuming that when multiple data packets are all segmented, transmitting multiple segmentations according to data packet sequencing), sequential reduction when can be with reference to the serial number of third indication field instruction.The packet header for being also possible to other segmentations in multiple segmentation includes third indication field, is not construed as limiting here.

Further, the packet header of each segmentation further includes the 4th indication field, and the 4th indication field is used to indicate whether corresponding segment is the last one segmentation in multiple segmentation.

Specifically, the network equipment is when encapsulating each segmentation, it whether can be that the last one segmentation in former data packet indicates in the packet header of each segmentation according to each segmentation, in this case, if multiple data envelopes are dressed up multiple segmentations by the network equipment, and the transmission sequence of multiple segmentations is interspersed, and reduction can be completed in the last one segmentation for receiving the same data packet in terminal device.So as to improve the accuracy of data convert and reduce delay.In the case where the transmission of multiple data packets sequence is certain, the packet header of each segmentation can not also include indicate whether be the last one segmentation instructions field.

Further, the packet header of at least one of multiple segmentation segmentation further includes the 5th indication field, and it is that just segmentation is still segmented again that the 5th indication field, which is used to indicate corresponding segment,.

Specifically, it can include the 5th indication field in the packet header that first in multiple segmentations is segmented, that is terminal device is after receiving first segmentation, it may know that next multiple segmentations belong to segmentation again or just segmentation, it can be with reference to the content of the 5th indication field instruction when sequential reduction.The packet header for being also possible to other segmentations in multiple segmentation includes the 5th indication field, is not construed as limiting here.

Here the effect of the 5th indication field instruction is identical compared with the effect of RF in technology, for sake of simplicity, which is not described herein again.

Further, the packet header of at least one of multiple segmentation segmentation further includes the sequence number of the affiliated service data unit of the first data packet.

Specifically, it can include the sequence number of the affiliated service data unit of the first data packet in the packet header that first in multiple segmentations is segmented, that is terminal device is after receiving first segmentation, it may know that next multiple segmentations are to belong to that original SDU, sequential reduction when can refer to the sequence number.The packet header for being also possible to other segmentations in multiple segmentation includes sequence number, is not construed as limiting here.

Here sequence number is identical as the effect of sequence number in the prior art, for sake of simplicity, equally repeating no more here.

It should be understood that can it is multiple segmentation at least one of segmentation in include it is above-mentioned institute instruction in need content, it is only necessary to as long as in each segmentation including corresponding segment serial number.

Optionally, the embodiment of the present application also provides a kind of method of segmentation instruction, the packet header of each segmentation may include retransmitting mark RF and segmentation biasing SO, in that case, the packet header can not have to include LSF, that is, not need to indicate whether for the last one segmentation.

The instruction for segmentation and re-segmentation is described in detail in the embodiment of the present application below in conjunction with Fig. 3 and Fig. 4.

As shown in figure 3, as shown below, for being segmented situation at the beginning of one, wherein SN is sequence number, and RF indicates whether re-segmentation flag attaches most importance to and is segmented mark, and LSF indicates whether last segmentation flag is the last one segmentation；MS indicates maximum segmentation, that is, maximum segment configuration instruction position, and SI indicates that segmentation index is that fragment sequence indicates；Assuming that the maximum just segments of network configuration is chosen as 4 kinds, respectively 2, and 4,8,16, then MS bit is 2, for respectively corresponding these four maximum segment numbers.Since the segmentation is just to be segmented, so RF=0 (assuming that if it is segmentation then RF=1 is retransmitted), while being indicated whether with LSF as the last one segmentation, 0 indicate be not, 1 indicate be；Assuming that MS is configured using second, as 01；For some specific just segmentation, indicate that each segmentation indicates that the segmentation is first segmentation in the position of former RLC SDU, such as SI=00 with the mode of sequence mark, SI=01 mark is segmented into second segmentation and so on.

As shown in figure 4, the case where for being segmented again again, it is assumed that be segmented for being segmented further progress at the beginning of first in Fig. 3, and segmentation maximum segment number is 2 again, in this case, it is assumed that maximum weight segments mark MS=00 (using the first)；Retransmit mark RF=1；It needs which belongs to comprising the heavy segmentation for being segmented again, in packet header and is just segmented, in Fig. 3, segmentation belongs to just segmentation 1 again, i.e. SI=00. is last, it is also necessary to the sequence number that mark is segmented again, i.e. RSI (ReSegmentation Index).

It should be understood that above-mentioned various values are intended merely to illustration, the embodiment of the present application is not limited to this.

Fig. 5 shows the schematic block diagram of the method 200 of the transmission data of the embodiment of the present application.As shown in figure 5, this method 200 can be executed by terminal device, such as can be executed by user equipment, this method 200 includes:

S210, receiving end receives the multiple segmentations for the first data packet corresponding to wireless spread-spectrum technology rlc protocol layer that transmitting terminal is sent, this is segmented into just segmentation or is segmented again, the packet header of each segmentation in multiple segmentation includes the first indication field, which is used to indicate sequence of the corresponding segment in multiple segmentation；

S220, the receiving end determine first data packet according to first indication field.

Optionally, in the embodiment of the present application, this method further include: maximum segment number corresponding with first data packet；The receiving end determines first data packet according to first indication field, comprising: the receiving end determines first data packet according to the maximum segment number and first indication field.

Optionally, in the embodiment of the present application, the receiving end determines maximum segment number corresponding with first data packet, include: the receiving end according to the type of service for the mapping logical channels for being used for transmission first data packet and/or be used for transmission the physical channel quality of first data packet, determines the maximum segment number.

Optionally, in the embodiment of the present application, the receiving end is terminal device, and the receiving end determines maximum segment number corresponding with first data packet, include: at least one the maximum segment number of the receiving end from network equipments configuration, determines the maximum segment number.

Optionally, in the embodiment of the present application, the packet header of each segmentation further includes the second indication field, which is used to indicate the maximum segment number.

Optionally, in the embodiment of the present application, this method further include: the receiving end determines the width of first indication field according to the maximum segment number；The receiving end determines first indication field from the packet header of corresponding segment according to the width of first indication field.

Optionally, in the embodiment of the present application, first data packet is to retransmit protocol Data Unit, the segmentation is attached most importance to segmentation, first data packet is segmentation at the beginning of one of first service data cell, the packet header of each segmentation further includes third indication field, the third indication field is used to indicate sequence of the first segmentation in multiple just segmentations of the first service data cell, the receiving end is according to first indication field, determine first data packet, include: the receiving end according to first indication field and the third indication field, determines first data packet.

Optionally, in the embodiment of the present application, the packet header of each segmentation further includes the 4th indication field, 4th indication field be used to indicate corresponding segment whether be in multiple segmentation the last one segmentation, the receiving end is according to first indication field, determine first data packet, comprising: the receiving end determines first data packet according to first indication field and the 4th indication field.

Optionally, in the embodiment of the present application, the packet header of each segmentation further includes the 5th indication field, it is that just segmentation is still segmented again that 5th indication field, which is used to indicate corresponding segment, 4th indication field is used to indicate whether corresponding segment is the last one segmentation in multiple segmentation, which determines first data packet according to first indication field, include: the receiving end according to first indication field and the 5th indication field, determines first data packet.

Optionally, in the embodiment of the present application, the packet header of each segmentation further includes the first data packet institute Belong to the sequence number of just service data unit, which determines first data packet according to first indication field, comprising: the receiving end determines first data packet according to first indication field and the sequence number.

It should be understood that the terminal device of terminal device description is corresponding with the correlation properties of the network equipment, function to the interaction of the network equipment and correlation properties, function etc..That is, what information the network equipment sends to terminal device, terminal device will correspondingly receive any information.For sake of simplicity, details are not described herein.

It will also be understood that, in the various embodiments of the application, magnitude of the sequence numbers of the above procedures are not meant that the order of the execution order, and the execution sequence of each process should be determined by its function and internal logic, and the implementation process without coping with the embodiment of the present application constitutes any restriction.

The method that the transmission data according to the embodiment of the present application have been described in detail above describes the device of the transmission data according to the embodiment of the present application below in conjunction with Fig. 6 to Fig. 9, and technical characteristic described in embodiment of the method is suitable for following Installation practice.

Fig. 6 shows the schematic block diagram of the device 300 according to the embodiment of the present application.As shown in fig. 6, the device 300 is transmitting terminal, which includes:

Processing unit 310, for being multiple segmentations by the first packet encapsulation of wireless spread-spectrum technology rlc protocol layer, this is segmented into just segmentation or is segmented again, the packet header of each segmentation in multiple segmentation includes the first indication field, which is used to indicate sequence of the corresponding segment in multiple segmentation；

Transmission unit 320, for sending multiple segmentation to receiving end.

Therefore, the device of the embodiment of the present application, enables the correct restoring data in receiving end, and can greatly reduce instruction expense.

Optionally, in the embodiment of the present application, the device 300 further include: the first determination unit 330, for determining maximum segment number corresponding with first data packet；The processing unit 310 is specifically used for: being the multiple segmentation for being segmented number and being less than or equal to the maximum segment number by first packet encapsulation.

Optionally, in the embodiment of the present application, which is specifically used for: according to the type of service for the mapping logical channels for being used for transmission first data packet and/or being used for transmission the physical channel quality of first data packet, determines the maximum segment number.

Optionally, in the embodiment of the present application, which is terminal device, which is specifically used for: from least one maximum segment number of network equipments configuration, determining the maximum segment number.

Optionally, in the embodiment of the present application, the device 300 further include: the second determination unit 340, for according to the maximum segment number determine first indication field shared by bit number；The processing unit 310 It is specifically used for: is multiple segmentation by first packet encapsulation according to bit number shared by first indication field.

Optionally, in the embodiment of the present application, first data packet is to retransmit protocol Data Unit, the segmentation is attached most importance to segmentation, first data packet is segmentation at the beginning of one of first service data cell, the packet header of each segmentation further includes third indication field, the third indication field is used to indicate sequence of the first segmentation in multiple just segmentations of the first service data cell, the device 300 further include: third determination unit 350, serial number for being indicated according to the first indication field of the first segmentation, determine the serial number of multiple third indication field instructions for retransmitting the heavy segmentation of each of segmentation.

Optionally, in the embodiment of the present application, the packet header of each segmentation further includes the 4th indication field, and the 4th indication field is used to indicate whether corresponding segment is the last one segmentation in multiple segmentation.

Optionally, in the embodiment of the present application, the packet header of each segmentation further includes the 5th indication field, and it is that just segmentation is still segmented again that the 5th indication field, which is used to indicate corresponding segment,.

Optionally, in the embodiment of the present application, the packet header of each segmentation further includes the sequence number of the affiliated service data unit of the first data packet.

It should be understood that, it can correspond to the transmitting terminal in the application embodiment of the method according to the device 300 of the embodiment of the present application, and above and other operation and/or function of each unit in device 300 is respectively in order to realize the corresponding contents in each method shown in Fig. 2 to Fig. 4, for sake of simplicity, details are not described herein.

Fig. 7 shows the schematic block diagram of the device 400 according to the embodiment of the present application.As shown in fig. 7, the device is receiving end, which includes:

Receiving unit 410, for receiving multiple segmentations of the first data packet corresponding to wireless spread-spectrum technology rlc protocol layer of transmitting terminal transmission, this is segmented into just segmentation or is segmented again, the packet header of each segmentation in multiple segmentation includes the first indication field, which is used to indicate sequence of the corresponding segment in multiple segmentation；

First determination unit 420, for determining first data packet according to first indication field.

Therefore, the device of the embodiment of the present application, can correct restoring data, and can greatly reduce instruction expense.

Optionally, in the embodiment of the present application, device 400 further include: the second determination unit 430 determines maximum segment number corresponding with first data packet；First determination unit 420 is specifically used for: according to the maximum segment number and first indication field, determining first data packet.

Optionally, in the embodiment of the present application, which is specifically used for: according to the type of service for the mapping logical channels for being used for transmission first data packet and/or being used for transmission first data packet Physical channel quality, determine the maximum segment number.

Optionally, in the embodiment of the present application, which is specifically used for: from least one maximum segment number of network equipments configuration, determining the maximum segment number.

Optionally, in the embodiment of the present application, the device 400 further include: third determination unit 440, for determining the width of first indication field according to the maximum segment number；4th determination unit 450 determines first indication field from the packet header of corresponding segment for the width according to first indication field.

Optionally, in the embodiment of the present application, first data packet is to retransmit protocol Data Unit, the segmentation is attached most importance to segmentation, first data packet is segmentation at the beginning of one of first service data cell, and the packet header of each segmentation further includes third indication field, which is used to indicate sequence of the first segmentation in multiple just segmentations of the first service data cell, first determination unit 420 is specifically used for: according to first indication field and the third indication field, determining first data packet.

Optionally, in the embodiment of the present application, the packet header of each segmentation further includes the 4th indication field, 4th indication field be used to indicate corresponding segment whether be in multiple segmentation the last one segmentation, first determination unit 420 is specifically used for: according to first indication field and the 4th indication field, determining first data packet.

It should be understood that, it can correspond to the receiving end in the application embodiment of the method according to the device 400 of the embodiment of the present application, and above and other operation and/or function of each unit in device 400 is respectively in order to realize the corresponding contents in each method shown in Fig. 3 to Fig. 5, for sake of simplicity, details are not described herein.

As shown in figure 8, the device 500 can be the device 300 in Fig. 6 the embodiment of the present application also provides a kind of device 500, it can be used to execute the content of transmitting terminal corresponding with method 100 in Fig. 2.The device 500 includes: input interface 510, output interface 520, processor 530 and memory 540, and the input interface 510, output interface 520, processor 530 and memory 540 can be connected by bus system.The memory 540 includes program, instruction or code for storing.The processor 530, For executing program, instruction or code in the memory 540, signal is received, the transmission signal of output interface 520 is controlled and completes the operation in preceding method embodiment to control input interface 510.

Therefore, device provided by the embodiments of the present application can reduce system signaling expense.

It should be understood that, in the embodiment of the present application, the processor 530 can be central processing unit (Central Processing Unit, referred to as " CPU "), which can also be other general processors, digital signal processor (DSP), specific integrated circuit (ASIC), ready-made programmable gate array (FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware components etc..General processor can be microprocessor or the processor is also possible to any conventional processor etc..

The memory 540 may include read-only memory and random access memory, and provide instruction and data to processor 530.The a part of of memory 540 can also include nonvolatile RAM.For example, memory 540 can be with the information of storage device type.

During realization, each content of the above method can be completed by the integrated logic circuit of the hardware in processor 530 or the instruction of software form.The content of the method in conjunction with disclosed in the embodiment of the present application can be embodied directly in hardware processor and execute completion, or in processor hardware and software module combination execute completion.Software module can be located at random access memory, flash memory, read-only memory, in the storage medium of this fields such as programmable read only memory or electrically erasable programmable memory, register maturation.The storage medium is located at memory 540, and processor 530 reads the information in memory 540, and the content of the above method is completed in conjunction with its hardware.To avoid repeating, it is not detailed herein.

In one specific embodiment, transmission unit 320 in device 300 can be realized that the processing unit 310, the first determination unit 330, the second determination unit 340 and third determination unit 350 in device 300 can be realized by the processor 530 in Fig. 8 by the output interface 520 in Fig. 8.

As shown in figure 9, the device 600 can be the device 400 in Fig. 7 the embodiment of the present application also provides a kind of device 600, it can be used to execute the content of receiving end corresponding with method 200 in Fig. 4.The device 600 includes: input interface 610, output interface 620, processor 630 and memory 640, and the input interface 610, output interface 620, processor 630 and memory 640 can be connected by bus system.The memory 640 includes program, instruction or code for storing.The processor 630 receives signal, controls the transmission signal of output interface 620 and completes the operation in preceding method embodiment for executing program, instruction or code in the memory 640 to control input interface 610.

It should be understood that in the embodiment of the present application, which be can be central processing unit (Central Processing Unit, referred to as " CPU "), the processor 630 can also be other general processors, Digital signal processor (DSP), specific integrated circuit (ASIC), ready-made programmable gate array (FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware components etc..General processor can be microprocessor or the processor is also possible to any conventional processor etc..

The memory 640 may include read-only memory and random access memory, and provide instruction and data to processor 630.The a part of of memory 640 can also include nonvolatile RAM.For example, memory 640 can be with the information of storage device type.

During realization, each content of the above method can be completed by the integrated logic circuit of the hardware in processor 630 or the instruction of software form.The content of the method in conjunction with disclosed in the embodiment of the present application can be embodied directly in hardware processor and execute completion, or in processor hardware and software module combination execute completion.Software module can be located at random access memory, flash memory, read-only memory, in the storage medium of this fields such as programmable read only memory or electrically erasable programmable memory, register maturation.The storage medium is located at memory 640, and processor 630 reads the information in memory 640, and the content of the above method is completed in conjunction with its hardware.To avoid repeating, it is not detailed herein.

In one specific embodiment, the first determination unit 420, the second determination unit 430, third determination unit 440 and the 4th determination unit 450 in device 400 can realize that the receiving unit 410 in device 400 can be realized by the input interface 610 of Fig. 9 with the processor 630 of Fig. 9.

Those of ordinary skill in the art may be aware that unit described in conjunction with the examples disclosed in the embodiments of the present disclosure and algorithm steps, can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Professional technician can use different methods to achieve the described function each specific application, but this realization is it is not considered that exceed scope of the present application.

It is apparent to those skilled in the art that for convenience and simplicity of description, system, the specific work process of device and unit of foregoing description can refer to corresponding processes in the foregoing method embodiment, details are not described herein.

In several embodiments provided herein, it should be understood that disclosed systems, devices and methods may be implemented in other ways.Such as, the apparatus embodiments described above are merely exemplary, such as, the division of the unit, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed mutual coupling, direct-coupling or communication connection can be through some interfaces, the indirect coupling or communication connection of device or unit, can be electrical property, mechanical or other forms.

Unit may or may not be physically separated as illustrated by the separation member for this, and component shown as a unit may or may not be physical unit, it can and it is in one place, or may be distributed over multiple network units.It can some or all of the units may be selected to achieve the purpose of the solution of this embodiment according to the actual needs.

In addition, each functional unit in each embodiment of the application can integrate in one processing unit, it is also possible to each unit and physically exists alone, can also be integrated in one unit with two or more units.

If the function is realized in the form of SFU software functional unit and when sold or used as an independent product, can store in a computer readable storage medium.Based on this understanding, substantially the part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products the technical solution of the application in other words, the computer software product is stored in a storage medium, it uses including some instructions so that a computer equipment (can be personal computer, server or the network equipment etc.) execute each embodiment this method of the application all or part of the steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), the various media that can store program code such as magnetic or disk.

It is described above; the only specific embodiment of the application, but the protection scope of the application is not limited thereto, and anyone skilled in the art is within the technical scope of the present application; it can easily think of the change or the replacement, should all cover within the scope of protection of this application.Therefore, the protection scope of the application should be subject to the protection scope in claims.

Claims

A method of transmission data characterized by comprising

First packet encapsulation of wireless spread-spectrum technology rlc protocol layer is multiple segmentations by transmitting terminal, it is described to be segmented into just segmentation or be segmented again, the packet header of each segmentation in the multiple segmentation includes the first indication field, and first indication field is used to indicate sequence of the corresponding segment in the multiple segmentation；

The transmitting terminal sends the multiple segmentation to receiving end.
The method according to claim 1, wherein the method also includes:

The transmitting terminal determines maximum segment number corresponding with first data packet；

First packet encapsulation is multiple segmentations by the transmitting terminal, comprising:

First packet encapsulation is the multiple segmentation for being segmented number and being less than or equal to the maximum segment number by the transmitting terminal.
According to the method described in claim 2, it is characterized in that, the transmitting terminal determines maximum segment number corresponding with first data packet, comprising:

The transmitting terminal is according to the types of service of the mapping logical channels for being used for transmission first data packet and/or is used for transmission the physical channel quality of first data packet, determines the maximum segment number.
According to the method described in claim 2, the transmitting terminal determines maximum segment number corresponding with first data packet it is characterized in that, the transmitting terminal is terminal device, comprising:

The transmitting terminal determines the maximum segment number from least one maximum segment number of network equipments configuration.
Method according to any one of claim 2 to 4, which is characterized in that the packet header of each segmentation further includes the second indication field, and second indication field is used to indicate the maximum segment number.
The method according to any one of claim 2 to 5, which is characterized in that the method also includes:

The transmitting terminal according to the maximum segment number determine first indication field shared by bit number；

First packet encapsulation of wireless spread-spectrum technology rlc protocol layer is multiple segmentations by the transmitting terminal, comprising:

First packet encapsulation is the multiple segmentation by transmitting terminal bit number according to shared by first indication field.
Method according to any one of claim 1 to 6, first data packet are to retransmit protocol Data Unit, described to be segmented segmentation of attaching most importance to, and first data packet is first service data cell Segmentation at the beginning of one, the packet header of each segmentation further includes third indication field, and the third indication field is used to indicate sequence of the just segmentation in multiple just segmentations of the first service data cell, the method also includes:

The transmitting terminal determines the serial number of multiple third indication field instructions for retransmitting the heavy segmentation of each of segmentation according to the serial number of the first indication field instruction being just segmented.
Method according to any one of claim 1 to 7, which is characterized in that the packet header of each segmentation further includes the 4th indication field, the 4th indication field be used to indicate corresponding segment whether be in the multiple segmentation the last one segmentation.
Method according to any one of claim 1 to 8, which is characterized in that the packet header of each segmentation further includes the 5th indication field, and it is that just segmentation is still segmented again that the 5th indication field, which is used to indicate corresponding segment,.
Method according to any one of claim 1 to 9, which is characterized in that the packet header of each segmentation further includes the sequence number of the affiliated service data unit of the first data packet.
A method of transmission data characterized by comprising

Receiving end receives the multiple segmentations for the first data packet corresponding to wireless spread-spectrum technology rlc protocol layer that transmitting terminal is sent, it is described to be segmented into just segmentation or be segmented again, the packet header of each segmentation in the multiple segmentation includes the first indication field, and first indication field is used to indicate sequence of the corresponding segment in the multiple segmentation；

The receiving end determines first data packet according to first indication field.
According to the method for claim 11, which is characterized in that the method also includes:

The receiving end determines maximum segment number corresponding with first data packet；

The receiving end determines first data packet according to first indication field, comprising:

The receiving end determines first data packet according to the maximum segment number and first indication field.
According to the method for claim 12, which is characterized in that the receiving end determines maximum segment number corresponding with first data packet, comprising:

The receiving end is according to the types of service of the mapping logical channels for being used for transmission first data packet and/or is used for transmission the physical channel quality of first data packet, determines the maximum segment number.
According to the method for claim 12, which is characterized in that the receiving end is terminal device, and the receiving end determines maximum segment number corresponding with first data packet, comprising:

The receiving end determines the maximum segment from least one maximum segment number of network equipments configuration Number.
Method described in any one of 2 to 14 according to claim 1, which is characterized in that the packet header of each segmentation further includes the second indication field, and second indication field is used to indicate the maximum segment number.
Method described in any one of 2 to 15 according to claim 1, which is characterized in that the method also includes:

The receiving end determines the width of first indication field according to the maximum segment number；

The receiving end determines first indication field from the packet header of each segmentation according to the width of first indication field.
Method described in any one of 1 to 16 according to claim 1, it is characterized in that, first data packet is to retransmit protocol Data Unit, it is described to be segmented segmentation of attaching most importance to, first data packet is segmentation at the beginning of one of first service data cell, the packet header of each segmentation further includes third indication field, the third indication field is used to indicate sequence of the just segmentation in multiple just segmentations of the first service data cell, the receiving end is according to first indication field, determine first data packet, comprising:

The receiving end determines first data packet according to first indication field and the third indication field.
Method described in any one of 1 to 17 according to claim 1, it is characterized in that, the packet header of each segmentation further includes the 4th indication field, 4th indication field be used to indicate corresponding segment whether be in the multiple segmentation the last one segmentation, the receiving end is according to first indication field, determine first data packet, comprising:

The receiving end determines first data packet according to first indication field and the 4th indication field.
Method described in any one of 1 to 18 according to claim 1, it is characterized in that, the packet header of each segmentation further includes the 5th indication field, it is that just segmentation is still segmented again that 5th indication field, which is used to indicate corresponding segment, 4th indication field be used to indicate corresponding segment whether be in the multiple segmentation the last one segmentation, the receiving end determines first data packet according to first indication field, comprising:

The receiving end determines first data packet according to first indication field and the 5th indication field.
Method described in any one of 1 to 19 according to claim 1, which is characterized in that described every The packet header of a segmentation further includes that just the sequence number of service data unit, the receiving end determine first data packet according to first indication field belonging to first data packet, comprising:

The receiving end determines first data packet according to first indication field and the sequence number.
A kind of device transmitting data, which is characterized in that described device is transmitting terminal, and described device includes:

Processing unit, for being multiple segmentations by the first packet encapsulation of wireless spread-spectrum technology rlc protocol layer, it is described to be segmented into just segmentation or be segmented again, the packet header of each segmentation in the multiple segmentation includes the first indication field, and first indication field is used to indicate sequence of the corresponding segment in the multiple segmentation；

Transmission unit, for sending the multiple segmentation to receiving end.
Device according to claim 21, which is characterized in that described device further include:

First determination unit, for determining maximum segment number corresponding with first data packet；

The processing unit is specifically used for:

It is the multiple segmentation for being segmented number and being less than or equal to the maximum segment number by first packet encapsulation.
Device according to claim 22, which is characterized in that first determination unit is specifically used for:

According to the type of service for the mapping logical channels for being used for transmission first data packet and/or it is used for transmission the physical channel quality of first data packet, determines the maximum segment number.
Device according to claim 22, which is characterized in that described device is terminal device, and first determination unit is specifically used for:

From at least one maximum segment number of network equipments configuration, the maximum segment number is determined.
The device according to any one of claim 22 to 24, which is characterized in that the packet header of each segmentation further includes the second indication field, and second indication field is used to indicate the maximum segment number.
The device according to any one of claim 22 to 25, which is characterized in that described device further include:

Second determination unit, for according to the maximum segment number determine first indication field shared by bit number；

The processing unit is specifically used for:

It is the multiple segmentation by first packet encapsulation according to bit number shared by first indication field.
Device described in any one of 1 to 26 according to claim 1, it is characterized in that, first data packet is to retransmit protocol Data Unit, it is described to be segmented segmentation of attaching most importance to, first data packet is segmentation at the beginning of one of first service data cell, the packet header of each segmentation further includes third indication field, and the third indication field is used to indicate sequence of the just segmentation in multiple just segmentations of the first service data cell, described device further include:

Third determination unit determines the serial number of multiple third indication field instructions for retransmitting the heavy segmentation of each of segmentation for the serial number according to the first indication field instruction being just segmented.
Device described in any one of 1 to 27 according to claim 1, which is characterized in that the packet header of each segmentation further includes the 4th indication field, the 4th indication field be used to indicate corresponding segment whether be in the multiple segmentation the last one segmentation.
Device described in any one of 1 to 28 according to claim 1, which is characterized in that the packet header of each segmentation further includes the 5th indication field, and it is that just segmentation is still segmented again that the 5th indication field, which is used to indicate corresponding segment,.
Device described in any one of 1 to 29 according to claim 1, which is characterized in that the packet header of each segmentation further includes the sequence number of the affiliated service data unit of the first data packet.
A kind of device transmitting data, which is characterized in that described device is receiving end, and described device includes:

Receiving unit, for receiving multiple segmentations of the first data packet corresponding to wireless spread-spectrum technology rlc protocol layer of transmitting terminal transmission, it is described to be segmented into just segmentation or be segmented again, the packet header of each segmentation in the multiple segmentation includes the first indication field, and first indication field is used to indicate sequence of the corresponding segment in the multiple segmentation；

First determination unit, for determining first data packet according to first indication field.
Device according to claim 31, which is characterized in that described device further include:

Second determination unit, for determining maximum segment number corresponding with first data packet；

First determination unit is specifically used for:

According to the maximum segment number and first indication field, first data packet is determined.
Device according to claim 32, which is characterized in that second determination unit is specifically used for:

According to the type of service for the mapping logical channels for being used for transmission first data packet and/or for passing The physical channel quality of defeated first data packet, determines the maximum segment number.
Device according to claim 32, which is characterized in that described device is terminal device, and second determination unit is specifically used for:

From at least one maximum segment number of network equipments configuration, the maximum segment number is determined.
The device according to any one of claim 32 to 34, which is characterized in that the packet header of each segmentation further includes the second indication field, and second indication field is used to indicate the maximum segment number.
The device according to any one of claim 32 to 35, which is characterized in that described device further include:

Third determination unit, for determining the width of first indication field according to the maximum segment number；

4th determination unit determines first indication field from the packet header of corresponding segment for the width according to first indication field.
The device according to any one of claim 31 to 36, it is characterized in that, first data packet is to retransmit protocol Data Unit, it is described to be segmented segmentation of attaching most importance to, first data packet is segmentation at the beginning of one of first service data cell, the packet header of each segmentation further includes third indication field, and the third indication field is used to indicate sequence of the just segmentation in multiple just segmentations of the first service data cell, and first determination unit is specifically used for:

According to first indication field and the third indication field, first data packet is determined.
The device according to any one of claim 31 to 37, it is characterized in that, the packet header of each segmentation further includes the 4th indication field, and the 4th indication field is used to indicate whether corresponding segment is the last one segmentation in the multiple segmentation, and first determination unit is specifically used for:

According to first indication field and the 4th indication field, first data packet is determined.
The device according to any one of claim 31 to 38, it is characterized in that, the packet header of each segmentation further includes the 5th indication field, it is that just segmentation is still segmented again that 5th indication field, which is used to indicate corresponding segment, 4th indication field is used to indicate whether corresponding segment is the last one segmentation in the multiple segmentation, and first determination unit is specifically used for:

According to first indication field and the 5th indication field, first data packet is determined.
The device according to any one of claim 31 to 39, which is characterized in that the packet header of each segmentation further includes that just the sequence number of service data unit, first determination unit are specifically used for belonging to first data packet:

According to first indication field and the sequence number, first data packet is determined.