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Method for sending and receiving IP message and device thereof

A technology of IP message and receiving method, which is applied in the field of communication, can solve problems such as communication interruption, undetectable protocol, and large difference in messages, and achieve the effect of avoiding communication interruption

Inactive Publication Date: 2009-09-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The compressed packet type values ​​defined by the EcRTP and cRTP protocols are basically the same, but the formats of some packets (such as COMPRESSED_UDP type packets) are quite different.
And if the consistency of the compression parameters is not completed through the negotiation of the underlying protocol, then in the case of an error by the configuration personnel, the compression parameters manually configured at both ends may be inconsistent (such as configuring cRTP at one end and EcRTP at the other end), and The protocol cannot detect this anomaly
This causes interruption of communication

Method used

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  • Method for sending and receiving IP message and device thereof
  • Method for sending and receiving IP message and device thereof
  • Method for sending and receiving IP message and device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1, a method for receiving an IP packet, the flow chart is as follows image 3 shown, including:

[0036] A1, receiving the IP packet with the uncompressed header sent by the sender;

[0037] A2, obtaining the transport protocol identifier in the IP compressed message;

[0038] In the embodiment of the present invention, the transport protocol identifier is represented by a value of a reserved field in the length field of the IP packet of the uncompressed header.

[0039] A3. Identify the CRTTP type adopted by the sender according to the identifier of the transmission protocol; the CRTTP type includes: common CRTTP and enhanced CRTTP.

[0040] It can be understood that, after step A3, it may include:

[0041] A4. Decompress the message from the sender according to the identified compressed real-time transport protocol type.

[0042] It can be understood that if the type of the identified CRTTP is CRTTP, and the local end is ECRTTP; then the local end uses ...

Embodiment 2

[0054] Embodiment two, a method for sending an IP message, for sending the IP message received in the first embodiment, specifically comprising:

[0055] The sender sends the IP message of the uncompressed header to the target party, and the IP message includes a transport protocol identifier; the transport protocol identifier is used to identify the type of the compressed real-time transport protocol adopted by the sender; the compressed real-time transport protocol Types include: Normal CRTTP and Enhanced CRTTP.

[0056] It can be understood that the transport protocol identifier is represented by a value of a reserved field in the length field of the IP packet of the uncompressed header.

[0057] It can be understood that, in the embodiment of the present invention, the IP packet with an uncompressed header includes a sending times identifier, and the value of the sending times identifier is used to indicate the number of times that the sender continuously sends the IP pack...

Embodiment 3

[0073] Embodiment 3, an IP packet sending device 500, the structural diagram is as follows Figure 5 shown, including:

[0074] The message encapsulation unit 510 is used to encapsulate the IP message of the uncompressed header, and the IP message includes a transport protocol identifier; the transport protocol identifier is used to identify the type of compressed real-time transport protocol adopted by the sender; the compressed real-time The types of transmission protocols include: common compressed real-time transport protocol and enhanced compressed real-time transport protocol;

[0075] A message sending unit 520, configured to send the IP message encapsulated by the message encapsulating unit 510 to a destination device.

[0076] It can be understood that, the IP packet with the uncompressed header encapsulated by the packet encapsulation unit also includes a sending times identifier, and the value of the sending times identifier is used to indicate the number of times ...

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Abstract

The invention discloses a method for sending and receiving an IP message and a device thereof. When the IP message that is not header-compacted is sent by a sender, transport protocol identification is carried in the message; the transport protocol identification is used for identifying the type of a compacted real-time transport protocol adopted by the sender; and the type of the compacted real-time transport protocol consists of a common compacted real-time transport protocol and an enhanced compacted real-time transport protocol. A receiver receives the message and can know the protocol adopted by the sender according to the transport protocol identification. Communication interrupt caused by the discrepancy of the compacted real-time transport protocols adopted by both communication parties can be avoided.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method and device for sending and receiving IP messages. Background technique [0002] Packet encapsulation technology is used in the Internet Protocol (IP) network to carry real useful data information. Generally, the format of each message is: link layer protocol header + IP header + high-level protocol header (there can be several layers) + valid data. For example, when the link layer is PPP, the packet encapsulation format for transmitting valid information as voice information is generally as follows: figure 1 shown. [0003] refer to figure 1 It can be seen from the figure that, compared to small packets with only 15-30 bytes of effective information, if each packet carries a 40-byte IP+UDP+RTP packet header, the transmission efficiency is very high. low. For this reason, the standardization organization stipulates a series of IP header compression (IPHC) proto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/56
Inventor 唐湜杨建刚
Owner HUAWEI TECH CO LTD
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