Method for IP message transmitting, bargaining bandwidth saving ability and saving network bandwidth

Abstract

This invention discloses a method for IP message transmission, negotiating about the bandwidth saving ability and saving bandwidth of networks, in which, the transmission method includes: A, a transmission party transmits more than one bandwidth saving abilities supported by itself to the receiving party, B, the receiving party selects one from the saving abilities sent by the transmission party according to the bandwidth saving ability supported by itself to send it to the transmission party, C, the transmission party determines the kind of the IP message based on the ability selected by thereceiving party, D, the transmission party applies the determined IP kind to structure the IP message loading transmission data to send the IP message to the receiving party.

Description

technical field [0001] The invention relates to the technology of transmitting data in the Internet Protocol (IP) bearer network of the communication system, in particular to a method for IP message transmission, negotiation bandwidth saving capability and network bandwidth saving. Background technique [0002] In a communication system, such as an IP bearer network of a Wide Code Division Multiple Access (WCDMA) system, data needs to be carried in packets for transmission, such as data carried in IP packets for transmission. Figure 1 is a schematic diagram of the network architecture of prior art WCDMA, the dotted line in the figure represents the signaling path, and the solid line represents the packet transmission path for carrying data, wherein, between the Nb interface between the media gateway (MGM), the UTRAN and the MGW The data transmitted by the Iu interface between the Nb and Iu interfaces can be carried by IP, the Nb interface and the Iu interface negotiate user ...

AI Technical Summary

Problems solved by technology

[0013] However, there is also a shortcoming in the negotiation process of the bandwidth saving capability of the IP message: the sender of the IP message only sends a kind of bandwidth saving capability supported by itself to the receiver of the IP message, which may easily lead to negotiation failure or re-negotiation. Negotiation process, resulting in a waste of communication system resources

[0018] There are disadvantages in using this type of IP packet to transmit data: First, if the IP packet carrying the IP packet header with stable information is lost or damaged, the receiver cannot communicate with the IP packet during this session. Correctly update the IP packet header of the IP packet, causing the two parties in the session to be unable to communicate correctly. Therefore, a mechanism must be provided to detect whether the receiver has received the IP packet carrying the IP packet header with stable information. If the receiver does not receive It is possible to send a message to request the sender to send it again, but this round-trip time in the communication system will affect the transmission efficiency of the IP message; second, it can only be used for a single session, and cannot be multiplexed for multiple sessions; third, Since the IP header of the IP packet is compressed, the IP packet with the compressed IP header cannot pass through a router that does not support IP header compression

[0021] First, when the IP message adopts the multiplexing header technology, since the multiplexing header in each IP sub-packet does not carry the information of the sender, the receiver who receives the IP message cannot judge the information of each IP address in the IP message. The legitimacy of sub-messages has reliability and security issues

To give an example, as shown in Figure 7: first, terminal 1 with address 10.110.100.100, port 5000 and terminal 2 with address 10.110.200.200, port 6000 establish a two-way connection, and the two terminals can send messages to each other. Receive the IP message; secondly, delete the two terminals after the transmission of the message, terminal 1 is successfully deleted, but terminal 2 is not deleted due to some reasons, and becomes a hanged terminal; finally, terminal 1 The IP address and port number will be assigned to subsequent terminals. Suppose it is assigned to terminal 3, which establishes a two-way connection with terminal 4 with IP address 10.110.200.200 and port 5000, and sends and receives IP packets to each other, but hangs at this time Terminal 2 still sends IP packets to IP address 10.110.100.100 and port 5000, so that terminal 3 receives IP packets from the two terminals. The IP packets from 10.110.200.200 / 5000 are legal, while those from 10.110 .200.200 / 6000 IP packets are illegal and need to be discarded. If the IP subgrams in the sent IP packets do not contain source information, the receiver cannot verify the validity of the IP subgrams in the IP packets. Make a judgment. If you don’t make a judgment, if you think it is a legal IP subgram, it will affect the quality of the call, such as crosstalk.

[0022] Second, when each IP sub-message in the IP message adopts the multiplexing header technology, the field for identifying the IP sub-message is too short, and can only use 1 byte to identify the IP sub-message at most. The length of the IP sub-message is 255 characters. When the length of the IP subgram is long, it is impossible to identify the length of the IP subgram. For example, when transmitting video data or performing RTP redundancy processing on voice data, the payload length in the IP subgram may exceed 255 bytes, then this multiplexing header technology cannot be applied

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