Method for transmitting ciphered data pack in gradual network
A technology of evolving network and encrypted transmission, applied in the field of communication, can solve the problem of decryption obstacles, encrypted data packets cannot be strictly one-to-one correspondence, and detached, etc., to achieve reliable security performance, improve transmission quality, and shorten the length of the effect.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0029] Embodiment 1. A method for transmitting encrypted data packets in an evolved network. The data transmission process is shown in FIG. 4 , and the data structure is shown in FIG. 5 . The method includes:
[0030] 1) The setting of the encryption sequence number and the sending of the encrypted data packet in the AGW, including
[0031] 1a) The UPE of the AGW performs PDCP header compression on the data packet to be transmitted to obtain a PDCP data packet (PDCP PDU);
[0032] 1b) Encrypt the PDCP PDU;
[0033]1c) Add an encryption serial number in the encrypted data packet; the encrypted serial number is a number with a certain length, generated in sequence, and recycled, and it can be added at any position in the encrypted data packet, as long as the AGW and the UE can agree Just confirm the position; in this example, it is assumed that the encryption sequence number is added to the extra header of the encrypted PDCP PDU, as shown in Figure 5, the encryption sequence n...
Embodiment 2
[0042] Embodiment 2. Another method for transmitting encrypted data packets in an evolved network. The data transmission process is shown in FIG. The encryption sequence number is encrypted and then added to the encrypted data packet. Compared with Embodiment 1, the advantage of this solution is that, after the encryption sequence number itself is encrypted, the entire content of the encrypted data packet is completely unavailable during transmission, which provides more reliable security performance for data transmission.
[0043] In the methods of the above two embodiments, the encryption serial number is only used for encryption and decryption. It is transmitted together with the content of the encrypted data part by the eNB as the content of the ARQ SDU without distinction. Therefore, the data from the AGW to the UE is transmitted to the eNB It is equivalent to a black box, and the eNB will not use any information in it, and the encryption sequence number is only extracted...
Embodiment 3
[0044] Embodiment 3. Yet another method for transmitting encrypted data packets in an evolved network, the data transmission process of which is shown in FIG. 7 , the method includes:
[0045] 1a) The UPE of the AGW performs PDCP header compression on the data packet to be transmitted to obtain a PDCP PDU;
[0046] 1b) Encrypt the PDCP PDU;
[0047] 1c) adding the encryption sequence number to the header of the encrypted data packet;
[0048] 1d) The AGW transmits the ARQ SDU containing the encrypted sequence number to the eNB through an ordered transmission protocol; in this example, the GTP transmission protocol is selected, which uses the tunnel sequence number to ensure the orderly transmission of user plane data from the AGW to the eNB.
[0049] 2a) The eNB receives the ARQ SDU data packets transmitted in order, reads the encrypted serial number, and uses the encrypted serial number as the ARQ SDU serial number. In Figure 7, a dotted circle circles the encrypted serial n...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More