CN112769705A - VoIP header compression method suitable for small local area network - Google Patents
VoIP header compression method suitable for small local area network Download PDFInfo
- Publication number
- CN112769705A CN112769705A CN202011383587.0A CN202011383587A CN112769705A CN 112769705 A CN112769705 A CN 112769705A CN 202011383587 A CN202011383587 A CN 202011383587A CN 112769705 A CN112769705 A CN 112769705A
- Authority
- CN
- China
- Prior art keywords
- header
- compression
- compressed
- data packets
- static
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Telephonic Communication Services (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
One embodiment of the invention discloses a VoIP header compression method suitable for a small local area network, which comprises the following steps: statically compressing the data packet in the header at the source node; judging whether the header after the static compression needs aggregation compression according to the judgment basis, and if not, sending the header after the static compression to a target node; and performing aggregation compression on the statically compressed header, and sending the compressed header to the target node after the compression is completed. The method provides possibility for VoIP data transmission in a small local area network by using a wireless narrow band under a complex battlefield environment.
Description
Technical Field
The present invention relates to header compression techniques. And more particularly, to a VoIP header compression method suitable for a small local area network.
Background
The principle of VoIP is that analog voice signals are compressed and packed by adopting digital processing, the voice packets are sent to a receiving end through an IP network, and digital processing is carried out at the receiving end, and finally an end-to-end bidirectional communication model is realized. Compared with the traditional circuit switching voice communication, the voice communication mode based on networking has the characteristics of easy integration, low cost, strong anti-interference performance, good confidentiality and the like, and can adapt to complex communication environments.
Meanwhile, the voice bandwidth of the wireless channel of the small local area network is generally narrow in a complex battlefield environment, and if the header cannot be effectively compressed, the bandwidth requirement for transmitting the VoIP is far less. Therefore, even though VoIP has many advantages, voice communication between small lans in most complex battlefield environments has been realized by circuit switching, and the header compression has limited the bottleneck of VoIP military application.
Disclosure of Invention
In view of the above, a first embodiment of the present invention provides a method for compressing a VoIP header in a small lan, including:
statically compressing the data packet in the header at the source node;
judging whether the header after the static compression needs aggregation compression according to the judgment basis, and if not, sending the header after the static compression to a target node;
and performing aggregation compression on the statically compressed header, and sending the compressed header to the target node after the compression is completed.
In a specific embodiment, the header includes: IP headers, UDP headers, and RTP headers.
In a specific embodiment, the static compression is such that all static information in the IP header, UDP header and RTP header is removed from the header.
In one embodiment, the determination is based on determining whether the number of the first data packet P and the data packet P' having the same source node as P is greater than the number of the data packets already aggregated and compressed by the source node, if not, the data packets do not need to be compressed, otherwise,
and judging whether the number of the data packets to be subjected to aggregation compression is smaller than a preset threshold value of the number of the aggregated compressed data packets, if not, compressing the data packets without compression, and if so, compressing and aggregating the header subjected to static compression.
In a specific embodiment, the aggregation and compression is to aggregate data packets originating from the same source node according to a preset mapping relationship of the transmitting vehicle, and aggregate and compress dynamic messages in a statically compressed header into an aggregated header.
In a specific embodiment, the aggregation header is a correspondence between voice data and a header.
In a particular embodiment, the target node recovers the static information deleted in the header based on the initial information.
In a particular embodiment, the target node inverse maps the recovered protocol header to the aggregated header.
The invention has the following beneficial effects:
the header of VoIP is compressed in two steps, the 28 byte header of IP-UDP can be compressed into 2 bytes, the header of RTP is compressed in the first step, 6 bytes can be reduced, the original 40 byte header requirement can be compressed into 12 bytes, the occupied bandwidth of the header before and after compression is changed from 3.2kbit/s to 0.96kbit/s, the available bandwidth is provided for transmitting voice payload, and the possibility is provided for VoIP data transmission in a small local area network by using a wireless narrow band under a complex battlefield environment.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of a VoIP header compression method for small local area networks according to an embodiment of the invention
Fig. 2 shows a structure diagram of a VoIP packet according to an embodiment of the present invention.
FIG. 3 illustrates a source node and header mapping relationship according to one embodiment of the invention.
Detailed Description
In order to make the technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, a VoIP header compression method suitable for a small local area network (a local area network with a number of communicable nodes within 100) includes:
statically compressing the data packet in the header at the source node;
as shown in fig. 2, the header includes: IP headers, UDP headers, and RTP headers.
Static compression is to remove all static information in the IP header, UDP header, and RTP header from the header.
Judging whether the header after the static compression needs aggregation compression according to the judgment basis, and if not, sending the header after the static compression to a target node;
wherein, the judgment basis is to judge whether the number of the first data packet P in the statically compressed data packets and the data packet P' which is the same as the source node of P is larger than the number of the data packets which are already aggregated and compressed by the source node, if not, the data packets do not need to be compressed, otherwise,
and judging whether the number of the data packets to be subjected to aggregation compression is smaller than a preset threshold value of the number of the aggregated compressed data packets, if not, compressing the data packets without compression, and if so, compressing and aggregating the header subjected to static compression.
The pseudo code is as follows, where minPackets represents the number of packets aggregated on the node, maxTime represents the maximum aggregation compression time, P represents the first packet in the aggregated packets, P' represents the number of packets from the same source as P, and a represents the packets ready for aggregation compression.
And performing aggregation compression on the statically compressed header, and sending the compressed header to the target node after the compression is completed.
The aggregation compression is to aggregate data packets with the same source node as the source according to a preset mapping relation of the transmitting vehicle, and aggregate and compress dynamic messages in the statically compressed header into an aggregated header.
In one embodiment, as shown in fig. 3, the aggregation header is a corresponding relationship between voice data and a header.
And after the compressed header is sent to the target node, the target node recovers the deleted static information in the header according to the initial information. And if the header is subjected to aggregation compression, the target node performs inverse mapping on the aggregation header to recover the header.
Preferably, the compression (step of statically compressing and/or aggregating the header)/the decompression (step of recovering the statically compressed and/or aggregated header) of the header is performed only at the source node and the destination node, and the intermediate node can forward the compressed packet without decompressing it. The algorithm can reduce the bandwidth required by the intermediate node and reduce the cost of context synchronization of the source node and the target node.
The header of VoIP is compressed in two steps, and the 28-byte header of IP-UDP can be compressed into 2 bytes. The header of RTP is compressed in the first step, 6 bytes (2 byte sequence number and 4 byte time stamp) can be reduced, the original header requirement of 40 bytes can be compressed into 12 bytes, the occupied bandwidth of the header before and after compression is changed from 3.2kbit/s to 0.96kbit/s, the available bandwidth is provided for transmitting voice payload, and the possibility is provided for carrying out VoIP data transmission in a small local area network by utilizing a wireless narrow band under a complex battlefield environment.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (8)
1. A method for compressing VoIP headers for small local area networks, comprising:
statically compressing the data packet in the header at the source node;
judging whether the header after the static compression needs aggregation compression according to the judgment basis, and if not, sending the header after the static compression to a target node;
and performing aggregation compression on the statically compressed header, and sending the compressed header to the target node after the compression is completed.
2. The method of claim 1, wherein the header comprises: IP headers, UDP headers, and RTP headers.
3. The method of claim 2, wherein the static compression is such that all static information in the IP header, UDP header, and RTP header is removed from the header.
4. The method of claim 1, wherein the determining is based on determining whether the number of the first data packet P and the data packets P 'having the same source node as P source in the statically compressed data packets is greater than the number of the data packets P' having been aggregated and compressed by the source node, if not, the data packets are not required to be compressed, otherwise,
and judging whether the number of the data packets to be subjected to aggregation compression is smaller than a preset threshold value of the number of the aggregated compressed data packets, if not, compressing the data packets without compression, and if so, compressing and aggregating the header subjected to static compression.
5. The method according to any one of claims 1 to 4, wherein the aggregation compression is to aggregate data packets whose sources are the same source node according to a mapping relation of preset transmitting vehicles, and aggregate and compress dynamic messages in a header after static compression into one aggregated header.
6. The method of claim 5, wherein the aggregation header is a correspondence between voice data and a header.
7. The method of claim 1, wherein the target node recovers the static information deleted in the header based on the initial information.
8. The method of claim 1, wherein the target node inverse maps a recovery protocol header to an aggregated header.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011383587.0A CN112769705A (en) | 2020-12-01 | 2020-12-01 | VoIP header compression method suitable for small local area network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011383587.0A CN112769705A (en) | 2020-12-01 | 2020-12-01 | VoIP header compression method suitable for small local area network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112769705A true CN112769705A (en) | 2021-05-07 |
Family
ID=75693251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011383587.0A Pending CN112769705A (en) | 2020-12-01 | 2020-12-01 | VoIP header compression method suitable for small local area network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112769705A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113612516A (en) * | 2021-07-13 | 2021-11-05 | 深圳震有科技股份有限公司 | Compression test method, system and equipment for satellite communication data packet |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311590A (en) * | 2000-03-03 | 2001-09-05 | 株式会社Ntt杜可莫 | Method and device for compacting masthead transmission data package |
| CN1581992A (en) * | 2003-08-14 | 2005-02-16 | 中兴通讯股份有限公司 | System and method for realizing encrypted communication in mobile communication system |
| CN1889575A (en) * | 2006-07-18 | 2007-01-03 | 华为技术有限公司 | Method for realizing head compressing and multiplexing method at IP layer |
| CN1909513A (en) * | 2006-07-18 | 2007-02-07 | 华为技术有限公司 | Method for realizing head compressing and multiple-use in serial chain circuit |
| CN105491255A (en) * | 2014-09-18 | 2016-04-13 | 广东世纪网通信设备有限公司 | Method and system for decreasing voice transmission load |
-
2020
- 2020-12-01 CN CN202011383587.0A patent/CN112769705A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311590A (en) * | 2000-03-03 | 2001-09-05 | 株式会社Ntt杜可莫 | Method and device for compacting masthead transmission data package |
| CN1581992A (en) * | 2003-08-14 | 2005-02-16 | 中兴通讯股份有限公司 | System and method for realizing encrypted communication in mobile communication system |
| CN1889575A (en) * | 2006-07-18 | 2007-01-03 | 华为技术有限公司 | Method for realizing head compressing and multiplexing method at IP layer |
| CN1909513A (en) * | 2006-07-18 | 2007-02-07 | 华为技术有限公司 | Method for realizing head compressing and multiple-use in serial chain circuit |
| CN105491255A (en) * | 2014-09-18 | 2016-04-13 | 广东世纪网通信设备有限公司 | Method and system for decreasing voice transmission load |
Non-Patent Citations (2)
| Title |
|---|
| S. CASNER ET AL.: ""Compressing IP/UDP/RTP Headers for Low-Speed Serial Links"", 《IETF 》 * |
| 马鸿志: ""战术互联网中 VoIP 实现技术研究"", 《中国优秀硕士学位论文全文数据库》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113612516A (en) * | 2021-07-13 | 2021-11-05 | 深圳震有科技股份有限公司 | Compression test method, system and equipment for satellite communication data packet |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5446736A (en) | Method and apparatus for connecting a node to a wireless network using a standard protocol | |
| US7058728B1 (en) | Method and apparatus for initiating compression of headers of packets and refreshing the context related to the packets | |
| JP3902235B2 (en) | Data compression in data connection | |
| JP3751823B2 (en) | Header compression in real-time services | |
| JP2003500933A (en) | Method and apparatus for telecommunications using internet protocol | |
| KR20060054662A (en) | Apparatus and method for compressing of herder in a broad band wireless communication system | |
| EP1362446A1 (en) | Transfer of ip data in communications system, using several logical connections for compressed fields on the basis of different contexts | |
| WO2010020197A1 (en) | Data transmission method, communication equipment and communication system | |
| EP1603305A1 (en) | Method for header compression in packet-based telecommunication systems | |
| US7564861B1 (en) | Systems and methods for compressing data | |
| Abdelfadeel et al. | Lschc: Layered static context header compression for lpwans | |
| US8559463B2 (en) | Systems and methods for providing efficient bandwidth utilization in packet switched networks | |
| CN106470212B (en) | Method for compressing and encrypting EIGRP protocol message based on LZW compression algorithm | |
| CN112769705A (en) | VoIP header compression method suitable for small local area network | |
| EP2127298A1 (en) | Header supression in a wireless communication network | |
| CN112566180B (en) | Method for improving packet data transmission rate of TETRA system | |
| KR100689473B1 (en) | Apparatus and method for compressing protocol header in communication system | |
| US20040034826A1 (en) | Transport protocol checksum recalculation | |
| Jin et al. | Performance comparison of header compression schemes for RTP/UDP/IP packets | |
| CA2373923C (en) | Communication system and method in an ip network | |
| Merkulov et al. | On the issue of IP header compression application in high voltage digital power line carrier channels | |
| TWI656765B (en) | Transmission system and transmission method | |
| KR101162374B1 (en) | Apparatus and method for transmiting/receiving packet header in a broadband wireless communication system | |
| Degermark et al. | Soft state header compression for wireless networks | |
| Abualhaj et al. | Improving VoIP Bandwidth Utilization Using the PldE Technique |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210507 |
|
| RJ01 | Rejection of invention patent application after publication |