CN107094144A - The method for packing and de-encapsulation method of base band frame - Google Patents
The method for packing and de-encapsulation method of base band frame Download PDFInfo
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- CN107094144A CN107094144A CN201710300441.7A CN201710300441A CN107094144A CN 107094144 A CN107094144 A CN 107094144A CN 201710300441 A CN201710300441 A CN 201710300441A CN 107094144 A CN107094144 A CN 107094144A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/04—Protocols for data compression, e.g. ROHC
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
- H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The method for packing and de-encapsulation method of a kind of base band frame, wherein method for packing include：The uncompressed packet received is stored in input data buffering area；All uncompressed packets in present input data buffering area are compressed to form compressed data packets；Compressed data packets are replaced into existing compressed data packets in compressed data buffering area；When the maximum data length that the data length of two buffering area memory storages is equal to or more than one base band frame can be accommodated, the packet of the selection wherein shorter buffering area memory storage of data length is used as data to be transmitted block；The maximum data length that wherein length of the data to be transmitted block can accommodate for a base band frame；Data to be transmitted block is encapsulated as base band frame, and whether the data to be transmitted block is identified through overcompression in the frame head of base band frame.The technical program solves existing broadcast system and does not consider to be compressed input data optimization and adapt to the technical problem that different types of data is compressed optimization.
Description
The application is the divisional application of original bill, the application number 201410043596.3 of original bill, January 29 2014 applying date
Day, invention and created name " method for packing and de-encapsulation method of base band frame ".
Technical field
The present invention relates to the transmission technique field for being wirelessly transferred base band frame, the method for packing of more particularly to a kind of base band frame and
De-encapsulation method.
Background technology
With radio broadcasting and the development of communication service, diversified spy is presented in the data content transmitted in Radio Link
Levy, IP packets turn into main data type.IP packets are made up of data packet head and data load two parts, and the former is used for
Mark sends and receives address, protocol type etc.；The latter is used to carry the data content to be transmitted, and can be further divided into
The different agreements such as UDP or TCP.All there is certain redundancy in this two parts data.In addition, some other radio broadcasting and communication
Usable data type can be arrived in business, such as TS packets, also there is redundancy to a certain degree.In order to improve radio chains
The efficiency of transmission on road, transmitting terminal data are compressed and receiving terminal decompressed recover without loss former data be can
Capable and favourable.
In the prior art, do not consider to be compressed input data optimization in some wireless broadcast systems；At some
In wireless communication system, the Header compression function with feedback is used, unidirectional radio network is not particularly suited for；It is wireless at some
In broadcast system, the compression methods such as RoHC agreements have been used, specific data type have been only applicable to, it is impossible to which application type is more extensive
Other data types or some new types of data types.
The problem of compression transmitting methods of data is mainly needed and solved in Radio Link base band frame includes：On the one hand it is directed to
Different input data types and feature, and the parameter of base band frame in itself, are applicable different compression methods, to improve efficiency；
On the other hand consider that the complexity of wireless transmission environments, with badly, error of transmission can be detected in time and recover normal work in time
Make state.But comparatively ideal solution is not provided in the prior art.
The content of the invention
The problem of present invention is solved is that existing broadcast system does not consider to be compressed input data optimization and adapted to
Different types of data is compressed optimization.
To solve the above problems, the embodiment of the present invention provides a kind of method for packing of base band frame, comprise the following steps：It will connect
The uncompressed packet received is stored in input data buffering area；To all uncompressed numbers in the current input data buffering area
It is compressed to form compressed data packets according to bag；The compressed data packets are replaced into existing compressed data in compressed data buffering area
Bag；When the maximum data length that the data length of two buffering area memory storages is equal to or more than one base band frame can be accommodated
When, the packet of the selection wherein shorter buffering area memory storage of data length is used as data to be transmitted block；The wherein number to be transmitted
The maximum data length that can be accommodated for a base band frame according to the length of block；The data to be transmitted block is encapsulated as base band frame,
And the data to be transmitted block is identified in the frame head of the base band frame whether through overcompression.
Optionally, the method for packing of base band frame also comprises the following steps：If in the shorter buffering area of the data length of selection
The length of all packets of storage is more than the maximum data length that a base band frame can be accommodated, then stores remaining data bag
The head to another buffering area is stored in the head of the buffering area, and by the remaining data packet replication.
Optionally, the method for packing of base band frame also comprises the following steps：No matter the remaining data bag is uncompressed packet
Or compressed data packets, the remaining data bag is no longer compressed.
Optionally, the method for packing of base band frame also comprises the following steps：Often encapsulate after a base band frame, by input data
Other packets in buffering area and compressed data buffering area in addition to remaining data bag are reset.
Optionally, the method for packing of base band frame also comprises the following steps：Timeout threshold is set, and is reset in data buffer zone
When simultaneously reset timer；Counted since being performed the step of uncompressed packet received is stored in into input data buffering area
When, when timer reaches the timeout threshold, no matter the data length of the compressed data packets of compressed data buffering area memory storage is
It is no to be equal to or more than the maximum data length that a base band frame be accommodated, by what is stored in the current compressed data buffering area
Compressed data packets are used as data to be transmitted block；The data to be transmitted block is encapsulated as base band frame, and in the frame head of the base band frame
The data to be transmitted block is identified to have been compressed.
Optionally, the data length that the input data buffering area and the compressed data buffering area can be accommodated is at least big
The maximum data length that can be accommodated in a base band frame.
Optionally, the uncompressed packet and compressed data packets be IP packets or UDP message bag or TCP data bag or
TS bags or other not specified type data packets.
Optionally, all uncompressed packets in the current input data buffering area are compressed to form pressure
Contracting packet comprises the following steps：1) it is compressed, and is counted after its compression using all uncompressed packets as an entirety
Length；2) according to the different type of the uncompressed packet received, content rearrangement is carried out to all uncompressed packets；3)
Packet header in all uncompressed packets by content rearrangement is compressed to form compressed data packets packet header；4) will be described
Compressed data packets packet header is stitched together to form pressure with the data payload in all uncompressed packets reset by content
Contracting packet, and count the length of the compressed data packets；5) above-mentioned steps 1 are compared) and step 4) obtained length, selection is wherein
Packet is put into compressed data buffering area after a shorter compression of length；6) compression letter is set on the head of compressed data packets
Breath, the compression information includes the type of the compression method and bag of the compressed data.
The embodiment of the present invention additionally provides a kind of de-encapsulation method of base band frame, comprises the following steps：Base band frame is received, its
Described in base band frame be using above-mentioned base band frame method for packing encapsulation form；The frame head of the base band frame is detected to judge the base band
Whether the transmission packet of frame in is through overcompression；If the determination result is YES, then in the transmission packet for extracting current base band frame in
Remaining data bag in all compressed data packets in addition to remaining data bag, and the transmission packet of next base band frame in
It is spliced into a complete compressed data packets；The complete compressed data packets are decompressed to obtain initial data；Will be current
The frame head of base band frame is stitched together with the initial data, and identifies the initial data in the frame head of current base band frame and solved
Compression.
Optionally, the de-encapsulation method of base band frame also comprises the following steps：If judged result is no, current base band is extracted
All uncompressed packets in the transmission packet of frame in addition to remaining data bag, and next base band frame in transmission
Remaining data bag in packet is spliced into a complete uncompressed packet；By the frame head of current base band frame with it is described complete
Uncompressed data be stitched together.
Optionally, the uncompressed packet, compressed data packets and transmission packet are IP packets or UDP message bag
Or TCP data bag or TS bags or other not specified type data packets.
Optionally, the compressed data packets packet header in compressed data packets is extracted；According to the flag bit in compression information, selection pair
Remaining data are decompressed；Or only compressed data packets packet header is decompressed to obtain each packet header, hereafter by each packet header
Corresponding data payload is entered rearrangement according to order and spliced to obtain raw data packets.
Compared with prior art, technical solution of the present invention has the advantages that：
1) compression is stored in after being compressed to the uncompressed packet being stored in input data buffering area received
Data buffer zone, and compare the data length of the packet in two buffering areas, the selection wherein shorter buffering area of data length
Interior packet is optimized as data to be transmitted block with the efficiency of transmission for realizing base band frame.
2) in base band frame encapsulation process, timeout threshold is set, it is super more than this when the time of one base band frame encapsulation of processing
When threshold value when, stop handling the compression of uncompressed packet, the compression number that will have been stored in the current compressed data buffering area
According to bag as data to be transmitted block, so that avoid causes to need because the packet information redundancy of input is high, compression efficiency is high
The encapsulation for completing a base band frame is taken a long time, the normal transmission of base band frame is influenceed.
3) for IP packets or UDP message bag or TCP data bag or TS bags, in compression process, do not press all first
Contracting packet carries out content rearrangement, and packet header therein taking-up merging is compressed to form compressed data packets packet header, then with institute
There is the data payload in uncompressed packet to be stitched together to form compressed data packets, so as to reduce operand, improve compression
Efficiency.
4) in compression process, to IP packets or UDP message bag or TCP data bag or TS bags or other not specified types
Packet, can also be regarded as general data and completely be compressed.By the method institute for comparing this method and above-mentioned rearrangement-compression
Obtained compressed data packet length, selects more excellent one kind, to improve compression efficiency.
Brief description of the drawings
Fig. 1 is a kind of schematic flow sheet of the embodiment of the method for packing of base band frame of the present invention；
Fig. 2 is a kind of schematic flow sheet of the embodiment of the de-encapsulation method of base band frame of the present invention.
Embodiment
Inventor has found that existing broadcast system does not consider to be compressed input data optimization and adapts to different pieces of information
Type is compressed optimization.
In view of the above-mentioned problems, inventor by research there is provided a kind of method for packing of base band frame and de-encapsulation method, with
Realize that the efficiency of transmission of base band frame is optimized.
It is understandable to enable the above objects, features and advantages of the present invention to become apparent, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail.
As shown in Fig. 1 the schematic flow sheet of the embodiment of the method for packing of a kind of base band frame of the invention.
With reference to Fig. 1, the method for packing of base band frame comprises the following steps：
Step S11：The uncompressed packet received is stored in input data buffering area；
Step S12：All uncompressed packets in the current input data buffering area are compressed to form compression
Packet；
Step S13：The compressed data packets are replaced into existing compressed data packets in compressed data buffering area；
Step S14：When the data length of two buffering area memory storages is equal to or more than one base band frame can accommodate
During maximum data length, the packet of the selection wherein shorter buffering area memory storage of data length is used as data to be transmitted block；Its
In the data to be transmitted block the maximum data length that can be accommodated for a base band frame of length；
Step S15：The data to be transmitted block is encapsulated as base band frame, and it is to be passed in the frame head of the base band frame to identify this
Whether transmission of data block is through overcompression.
In the present embodiment, when transmitting terminal makees the encapsulation of base band frame, two buffering areas can be set, respectively input data is delayed
Area and compressed data buffering area are rushed, and the data that the input data buffering area and the compressed data buffering area can be accommodated are long
The maximum data length that at least above one base band frame of degree can be accommodated.
When starting to transmit uncompressed packet, two buffering areas are first reset.Then, by the uncompressed packet received
Input data buffering area (as described in step S11) is stored in, wherein the uncompressed packet can be IP packets or UDP numbers
According to bag or TCP data bag or TS bags or other not specified type data packets.
Then, as described in step S12, all uncompressed packets in the current input data buffering area are compressed
To form compressed data packets.As described in step S13, the compressed data packets are replaced into existing compression number in compressed data buffering area
According to bag.
Specifically, after receiving first uncompressed packet and being stored in input data buffering area, compression is enabled
Device is compressed to form compressed data packets to first uncompressed packet.Then, the compressed data packets are stored in pressure
In contracting data buffer zone and replace existing compressed data packets.It should be noted that now not yet being deposited in compressed data buffering area
Any compressed data packets are stored up, it is empty packet to replace existing compressed data packets.
Next, receive second uncompressed packet and be stored in after input data buffering area, be by first not
Compressed data packets and second uncompressed packet as after overall be compressed to form compressed data packets.Then should then,
Compressed data packets are stored in compressed data buffering area and replace existing compressed data packets, the existing compression number now replaced
It is first previous compressed data packets according to bag.
By that analogy, successively all uncompressed packets in the current input data buffering area are compressed to be formed
Compressed data packets, and the compressed data packets are replaced into existing compressed data packets in compressed data buffering area.
Then, as described in step S14, when the data length of two buffering area memory storages is equal to or more than one base band frame
During the maximum data length that can be accommodated, the packet of the selection wherein shorter buffering area memory storage of data length is as to be transmitted
Data block.Wherein, the maximum data length that the length of the data to be transmitted block can accommodate for a base band frame.
Specifically, the mode according to above-mentioned steps S11 to step S13 is compressed to the uncompressed packet received
Processing, until the maximum data that the data length of two buffering area memory storages is equal to or more than one base band frame can be accommodated is long
When spending, the packet of the selection wherein shorter buffering area memory storage of data length is used as data to be transmitted block.
Here it is divided into two kinds of situations：
1) when the data length of two buffering area memory storages is equal to the maximum data length that a base band frame can be accommodated
When, the packet of any of which buffering area memory storage can be selected as data to be transmitted block, and in this case, appoint
All packets do not have remaining data bag all in a base band frame in transmission in one buffering area.
2) when the data length of two buffering area memory storages is both greater than the maximum data length that a base band frame can be accommodated
When, the packet of the selection wherein shorter buffering area memory storage of data length is used as data to be transmitted block.Specifically, when input number
When being more than the data length in compressed data buffering area according to the data length in buffering area, illustrate the data of the packet after compression
Length is less, so as to select compressed data packets (packet i.e. in compressed data buffering area) as data to be transmitted block.When defeated
When entering the data length that data length in data buffer zone is less than in compressed data buffering area, illustrate the packet after compressing
Data length is big all the better (being not carried out data compression, packet redundancies many on the contrary), at this moment selects uncompressed packet
(packet i.e. in input data buffering area) is used as data to be transmitted block.
As described in step S15, the data to be transmitted block is encapsulated as base band frame, and identified in the frame head of the base band frame
Whether the data to be transmitted block is through overcompression.Wherein, the encapsulation process for data to be transmitted block being encapsulated as into base band frame can be with existing
Technology is realized, will not be repeated here.One flag bit (such as CMP, for informing receiving terminal is set in the frame head of base band frame
Whether the transmission packet of current base band frame have passed through compression, and length is 1 bit).As CMP=0, not enabled packet is represented
Compression function, receiving terminal according to domain content can be parsed and used according to original standard logarithmic；As CMP=1, expression enables number
According to packet compression function, receiving terminal is gone and parses and use again after data field content need to first being decompressed.
It should be noted that can be accommodated most when the data length of two buffering area memory storages is both greater than a base band frame
During big data length, the packet of the selection wherein shorter buffering area memory storage of data length is as data to be transmitted block, and this is treated
The maximum data length that the length of transmission data block can accommodate for a base band frame.So by some data in buffering area
Bag (being referred to as remaining data bag), which needs to be placed in next base band frame, to be transmitted, and the processing mode for the remaining data bag is as follows：
Remaining data bag is stored in the head of the shorter buffering area of selected data length, and by the remaining data bag
Storage is replicated to the head of another buffering area.For example, when selected buffering area is input data buffering area, the remainder
The head of input data buffering area is stored according to bag, and replicates the head for being stored in compressed data buffering area.When selected slow
When rushing area for compressed data buffering area, the remaining data bag is stored in the head of compressed data buffering area, and replicate be stored in it is defeated
Enter the head of data buffer zone.
Further, no matter the remaining data bag is uncompressed packet or compressed data packets, and the remaining data bag is not
It is compressed again.That is, receiving new uncompressed packet in follow-up input data buffering area and it being compressed
When, the remaining data bag that no longer will be stored in head is compressed.
Mode according to above-described embodiment is packaged to each base band frame, and has often been encapsulated after a base band frame, will
Other packets in input data buffering area and compressed data buffering area in addition to remaining data bag are reset.
Inventor it may be further contemplated, if the information redundance of the uncompressed packet of input is high and compression efficiency is high, compress
Data volume very little afterwards, it will the uncompressed packet for resulting in the need for much inputting, which is compressed, can just fill up compressed data buffering
Area, so as to take a long time to the encapsulation for completing a base band frame.
Therefore, based on above-described embodiment, inventor has done following improvement：
1) timeout threshold is set, and timer is reset simultaneously when data buffer zone is reset；
2) timing since being performed the step of uncompressed packet received is stored in into input data buffering area, in meter
When device when reaching the timeout threshold, no matter the data length of the compressed data packets of compressed data buffering area memory storage whether be equal to or
The maximum data length that more than one base band frame can be accommodated, the compressed data that will have been stored in the current compressed data buffering area
Bag is used as data to be transmitted block；
3) the data to be transmitted block is encapsulated as base band frame, and the data to be transmitted block is identified in the frame head of the base band frame
Have been compressed.
By so improving, so that avoid causes to need because the packet information redundancy of input is high, compression efficiency is high
The encapsulation for completing a base band frame is taken a long time, the efficiency of transmission of base band frame is influenceed.
On the other hand, for the mode being compressed to uncompressed packet, the present embodiment provides and mode is implemented as follows, i.e.,
Above-mentioned steps S12 comprises the following steps：
1) it is compressed using all uncompressed packets as an entirety, and counts the length after its compression；
2) according to the different type of the uncompressed packet received, content rearrangement is carried out to all uncompressed packets；
3) packet header in all uncompressed packets by content rearrangement is compressed to form compressed data packets bag
Head；
4) the compressed data packets packet header is spelled with the data payload in all uncompressed packets by content rearrangement
It is connected together to form compressed data packets, and counts the length of the compressed data packets；
5) above-mentioned steps 1 are compared) and step 4) obtained length, packet after a shorter compression of selection wherein length
It is put into compressed data buffering area；
6) compression information is set on the head of compressed data packets, and the compression information includes the compression side of the compressed data
Method and the type of bag.
In the present embodiment, it is to the implementation process that all uncompressed packets carry out content rearrangement：Each is not pressed
The packet header of contracting packet is extracted, and these packet header are merged and processing is compressed to form compressed data packets bag
Head；And extract the data payload of each uncompressed packet, these data payloads are merged, but these are counted
Compression processing is not done according to load, so as to reduce operand, compression efficiency is improved.
It should be noted that such compress mode is applied to IP packets or UDP message bag or TCP data bag or TS
Bag.For other kinds of packet, reset without content, processing directly is compressed to its entirety.For IP packets
Or UDP message bag or TCP data bag or TS bags, it can also be reset without content, processing directly is compressed to its entirety.
The embodiment of the present invention additionally provides a kind of de-encapsulation method of base band frame.As shown in Fig. 2 one kind of the invention
The schematic flow sheet of the embodiment of the de-encapsulation method of base band frame.With reference to Fig. 2, the decapsulation mode of base band frame is included such as
Lower step：
Step S21：Base band frame is received, wherein the base band frame is formed using the method for packing encapsulation of above-mentioned base band frame；
Step S22：The frame head of the base band frame is detected to judge the transmission packet of the base band frame in whether through overcompression；
Step S23：If the determination result is YES, then extract in the transmission packet of current base band frame in except remaining data bag with
Remaining data bag in outer all compressed data packets, and the transmission packet of next base band frame in is spliced into one completely
Compressed data packets；
Step S24：The complete compressed data packets are decompressed to obtain initial data；
Step S25：The frame head of current base band frame and the initial data are stitched together, and in the frame of current base band frame
The initial data is identified in head to have decompressed.
In the present embodiment, receiving terminal is received after base band frame, detects the frame head of the base band frame to judge the base band frame in
Transmission packet whether through overcompression.
If the determination result is YES, then extract and remaining data bag (if yes) is removed in the transmission packet of current base band frame in
Remaining data bag in all compressed data packets in addition, and the transmission packet of next base band frame in be spliced into one it is complete
Whole compressed data packets.Then, the complete compressed data packets are decompressed to obtain initial data；Then, by current base
Frame head with frame is stitched together with the initial data, and identifies the initial data in the frame head of current base band frame and decompressed
Contracting, transfers to the next stage processing unit of receiving terminal to be handled.
Wherein, the complete compressed data packets are decompressed includes following steps to obtain initial data：
Step S241：Extract the compression information in compressed data packets；
Step S242：According to the flag bit in compression information, selection is decompressed to total data；Or only to compressed data
Bag packet header is decompressed to obtain each packet header, and the corresponding data payload in each packet header hereafter is entered into rearrangement according to order
And splice to obtain raw data packets.
In fact, the step S241 and step S242 are uncompressed packet to be compressed with shape in foregoing embodiments
Into the inverse process of compressed data packets.
If judged result is no, extract all in addition to remaining data bag in the transmission packet of current base band frame in
Remaining data bag in uncompressed packet, and the transmission packet of next base band frame in is spliced into one and complete not pressed
Contracting packet；Then, the frame head of current base band frame is stitched together with the complete uncompressed data, transfers to receiving terminal
Next stage processing unit is handled.
In the present embodiment, the uncompressed packet, compressed data packets and transmission packet are IP packets or UDP
The packet of packet or TCP data bag or TS bags or other not specified types.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting the present invention, any this area
Technical staff without departing from the spirit and scope of the present invention, may be by the methods and techniques content of the disclosure above to this hair
Bright technical scheme makes possible variation and modification, therefore, every content without departing from technical solution of the present invention, according to the present invention
Any simple modifications, equivalents, and modifications made to above example of technical spirit, belong to technical solution of the present invention
Protection domain.
Claims (12)
1. a kind of method for packing of base band frame, it is characterised in that comprise the following steps：
The uncompressed packet received is stored in input data buffering area；
All uncompressed packets in presently described input data buffering area are compressed to form compressed data packets；
The compressed data packets are replaced into existing compressed data packets in compressed data buffering area；
When the data length of the input data buffering area and the compressed data buffering area memory storage is equal to or more than one
During the maximum data length that base band frame can be accommodated, the packet conduct of the selection wherein shorter buffering area memory storage of data length
Data to be transmitted block, wherein, the maximum data length that the length of the data to be transmitted block can accommodate for a base band frame；With
And
The data to be transmitted block is encapsulated as base band frame, and identifies in the frame head of the base band frame data to be transmitted block
Whether through overcompression.
2. the method for packing of base band frame as claimed in claim 1, it is characterised in that also comprise the following steps：
If the length of all packets of the shorter buffering area memory storage of the data length of selection is more than a base band frame and can held
Remaining data bag, then be stored in the head of the buffering area by the maximum data length received, and by the remaining data packet replication
Store the head of another buffering area.
3. the method for packing of base band frame as claimed in claim 2, it is characterised in that also comprise the following steps：It is no matter described surplus
Remaining packet is uncompressed packet or compressed data packets, and the remaining data bag is no longer compressed.
4. the method for packing of base band frame as claimed in claim 1, it is characterised in that also comprise the following steps：Often encapsulate one
After individual base band frame, by other numbers in the input data buffering area and the compressed data buffering area in addition to remaining data bag
Reset according to bag.
5. the method for packing of base band frame as claimed in claim 1, it is characterised in that also comprise the following steps：
Timeout threshold is set, and timer is reset simultaneously when data buffer zone is reset；
The timing since being performed the step of uncompressed packet received is stored in into the input data buffering area, described
When timer reaches the timeout threshold, no matter the data length of the compressed data packets of the compressed data buffering area memory storage is
It is no to be equal to or more than the maximum data length that a base band frame be accommodated, it will be stored in presently described compressed data buffering area
Compressed data packets be used as the data to be transmitted block；And
The data to be transmitted block is encapsulated as base band frame, and the data to be transmitted block has been identified in the frame head of the base band frame
Through overcompression.
6. the method for packing of base band frame as claimed in claim 1, it is characterised in that the input data buffering area and the pressure
The maximum data length that at least above one base band frame of the data length that contracting data buffer zone can be accommodated can be accommodated.
7. the method for packing of base band frame as claimed in claim 1, it is characterised in that the uncompressed packet and compressed data
Wrap as IP packets or UDP message bag or TCP data bag or TS bags or other not specified type data packets.
8. the method for packing of base band frame as claimed in claim 7, it is characterised in that in presently described input data buffering area
All uncompressed packets specifically include the step of be compressed to form compressed data packets：
1) it is compressed using all uncompressed packets as an entirety, and counts the length after compression；
2) according to the different type of the uncompressed packet received, content rearrangement is carried out to all uncompressed packets；
3) packet header in all uncompressed packets by content rearrangement is compressed to form compressed data packets packet header；
4) the compressed data packets packet header is existed with the data payload splicing in all uncompressed packets by content rearrangement
Together, to form compressed data packets, and the length of the compressed data packets is counted；
5) above-mentioned steps 1 are compared) and step 4) obtained length, after a shorter compression of selection wherein length, by packet
It is put into the compressed data buffering area；And
6) compression information is set on the head of compressed data packets, and the compression information includes the compression method of the compressed data packets
With the type of bag.
9. a kind of de-encapsulation method of base band frame, it is characterised in that comprise the following steps：
Base band frame is received, wherein the base band frame is formed using the method for packing encapsulation of the base band frame described in claim 1；
The frame head of the base band frame is detected to judge the transmission packet of the base band frame in whether through overcompression；
If the determination result is YES, then all compressions in addition to remaining data bag in the transmission packet of current base band frame in are extracted
Remaining data bag in packet, and the transmission packet of next base band frame in, is spliced into a complete compressed data
Bag；
The complete compressed data packets are decompressed to obtain initial data；And
The frame head of current base band frame and the initial data are stitched together, and mark is described in the frame head of current base band frame
Initial data has been decompressed.
10. the de-encapsulation method of base band frame as claimed in claim 9, it is characterised in that also comprise the following steps：
If judged result is no, that extracts in the transmission packet of current base band frame in addition to remaining data bag all does not press
Remaining data bag in contracting packet, and the transmission packet of next base band frame in, be spliced into one it is complete uncompressed
Packet；And
The frame head of current base band frame is stitched together with the complete uncompressed packet.
11. the de-encapsulation method of base band frame as claimed in claim 10, it is characterised in that the uncompressed packet, compression
Packet and transmission packet are IP packets or UDP message bag or TCP data bag or TS bags or other not specified number of types
According to bag.
12. the de-encapsulation method of base band frame as claimed in claim 11, it is characterised in that to the complete compressed data packets
The step of being decompressed to obtain initial data specifically includes：
Extract the compression information in compressed data packets；
According to the flag bit in compression information, selection is decompressed to total data, or only compressed data packets packet header is solved
The corresponding data payload in each packet header is entered rearrangement according to order afterwards and spliced by pressure to obtain each packet header, with
To initial data.
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| CN108173623B (en) * | 2018-01-16 | 2020-08-14 | 四川安迪科技实业有限公司 | User-defined baseband frame packaging method based on sliding CRC |
| CN109120687B (en) * | 2018-08-09 | 2020-07-24 | 深圳市腾讯网络信息技术有限公司 | Data packet transmitting method, device, system, equipment and storage medium |
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| CN107094144B (en) | 2021-01-19 |
| CN104811265A (en) | 2015-07-29 |
| CN104811265B (en) | 2018-12-18 |
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