78results about How to "Reduce interaction process" patented technology

The invention discloses a timing trigger switching method based on ephemeris and user position calculation, and belongs to the field of low-orbit satellite communication. The working principle is as follows: (1) a gateway station receives a position and speed measurement report periodically sent by a user, (2) the gateway station calculates and judges a target wave beam/satellite/gateway station and a switching mode according to the ephemeris; (3) a delta t1 value is calculated according to the conditions of the source gateway station, the target gateway station and the switching mode, (4) a toff-treport value and a delta t2 value are calculated based on the ephemeris and the user position; (5) pre-switching judgment is carried out according to the calculated value; (6) if a pre-switchingcondition is met, a timer is established; (7), pre-switching is initiated by the gateway station according to the timing of the timer; and (8), a switching command is issued to a user by the gateway station after the timing of the timer (toff-treport-delta t1-delta t2). By means of the method, the low-orbit satellite system switching preparation stage depends on gateway station calculation, the terminal does not need to conduct neighbor cell/wave beam pilot frequency measurement, the switching problem of a small wave beam overlapping area is effectively solved, and meanwhile the method is widely applied to various scenes of the low-orbit satellite system.

The invention belongs to the technical field of instant messages and discloses an encryption method of a mobile instant message. The encryption method comprises the steps that the instant message is encrypted by a random number R; the random number R is encrypted by a public key of a password server simultaneously; the password server decrypts the random number R with a private key of the password server and encrypts the random number R with a public key of a mobile terminal of a receiver; the instant message and the random number are sent to the mobile terminal of the receiver; the mobile terminal of the receiver decrypts the random number R with a private key of the mobile terminal, and then decrypts the instant message with R; and the instant message is received and displayed. The instant message is encrypted by the random number R, and the private key R is encrypted during transmission. Confidentiality of the instant message is strengthened. Meanwhile, all password processing such as matching of a user identity with a password, and password conversion are performed on a server with higher processing capacity, so that the terminal burden is reduced, and the purposes of ensuring message transmission security and reducing the computation of the terminal are achieved. In addition, an additional communication flow is not required to be added between the terminal and the server when the encrypted message is transmitted, so that the limited wireless broadband resource is saved.

The invention discloses a blockchain data sharing encryption and decryption method, equipment and a storage medium, which belong to the technical field of blockchains. The blockchain data sharing encryption and decryption method comprises the steps of: creating a homomorphic proxy re-encryption key pair private key A and public key A1 by at least one first party; encrypting a plaintext a to obtaina ciphertext a1; uploading the ciphertext a1 to a blockchain; creating a homomorphic proxy re-encryption key pair private key B and public key B1 by at least one second party; encrypting a plaintextb to obtain a ciphertext b1; uploading the ciphertext b1 to the blockchain; acquiring a public key C1 from an intelligent contract of the blockchain by the first party and the second party; performingproxy re-encryption on the public key C1 and the private key A to obtain a secret key rekey A by the first party, and uploading the secret key rekey A to the blockchain; and performing proxy re-encryption on the public key C1 and the private key B to obtain a secret key rekey B by the second party, and uploading the secret key rekey B to the blockchain, wherein the intelligent contract creates akey pair private C and public key C1 through homomorphic encryption. The blockchain data sharing encryption and decryption method solves the homomorphic problem of conducting safety calculation basedon private data of the blockchain, reduces the interaction process between users and the blockchain and between the users, moves some operations under the chain to the chain, and makes calculation more credible.

Embodiments of the invention provide a metadata retrieval method and device, a storage medium and electronic equipment. The retrieval method is applied to a server in a distributed file system, and the server is configured with a database for caching metadata. The retrieval method comprises the steps of receiving a retrieval request sent by a client; retrieving target metadata corresponding to theretrieval request from a database according to the retrieval request; and sending information carrying the target metadata to the client. According to the embodiment of the invention, the metadata iscached in the database, so when the server receives the retrieval request sent by the client, the server can directly obtain the target metadata by querying the database, the interaction process between the server and the file system is reduced, and the retrieval efficiency of the metadata is improved.

The invention provides a method, device and network for a network re-registration of an Internet protocol multimedia subsystem (IMS). In the method, S-CSCF information of registered user equipment (UE) saved in a registered user information database by using P-CSCF is adopted, a re-registration massage sent by the UE in the IMS domain is directly forwarded, thereby reducing the signalling interaction in the re-registration process, reducing the loading of an IMS device in a core net, and improving the experience of users on time delay in the re-registration process.

The invention relates to a certificate authorization method of a separation-mechanism mobile management system. The method comprises the steps of: firstly, carrying out identity authentication on a moving node accessed into the separation-mechanism mobile management system, after successful authentication, adding routs and establishing a tunnel by all functional entities in the system through mobile signaling interaction, acquiring home network prefix information stored in a server by the mobile node, and acquiring a network service by the mobile node at the moment so as to realize the authorization of the separation mechanism mobile management to the mobile node. The method comprises home domain initial authentication, home domain reauthentication, foreign domain initial authentication, foreign domain reauthentication and authentication to the mobile node. According to the invention, an AGW (Access Gateway), a CGW (Customer GateWay), a DGW (Data Gateway) and an AAA (Authentication, Authorization and Accounting) server are taken as main functional entities, and a series message interaction among the AGW, CGW, DGW and AAA server is used to complete the authentication of the legality of the mobile node so as to guarantee network safety.

The embodiment of the invention provides a secondary authentication method and device, and the method comprises the steps that a core network function entity obtains the identity of first terminal equipment, and the identity of the first terminal equipment is the identity of a first network; and the core network function entity sends the identity identifier of the first terminal device to an authentication device in a second network, the identity identifier of the first terminal device is used for determining an identity identifier of the second network for performing secondary authenticationon a first user, and the identity identifier of the first user is different from the identity identifier of the first terminal device. According to the method, the core network function entity can send the identity identifier of the first terminal device to the authentication device in the second network, and the identity identifier of the first user can be determined through the identity identifier of the first terminal device; the implicit transmission of the identity of the first user can enhance the security protection of the identity of the user in the secondary authentication process.

The embodiment of the invention discloses a domain selection method. The method comprises the following steps: receiving a registration information inquiry request sent by a first call session control function network element CSCF, wherein the registration information inquiry request comprises an identifier of a user terminal that is used as the called; inquiring a registered network of the user terminal according to the identifier of the user terminal; when the user terminal is registered in an IP multimedia subsystem IMS network, sending a first registration information inquiry feedback message to the first CSCF; or when the user terminal is registered in a code division multiple access CDMA network, sending a second registration information inquiry feedback message to the first CSCF. Further, the embodiment of the invention further discloses a domain selection server.

The invention discloses a user equipment online method and user equipment, and belongs to the technical field of communication. According to the invention, in a conflict control access stage, user equipment can send a first signal to access equipment at a first uplink frequency point, then receive a second signal which is sent by the access equipment at a first downlink frequency point and a second downlink frequency point and responds to the first signal, and sends a third signal on the first uplink frequency point and an uplink frequency point included in the target carrier set to complete selection of the carrier set. In a handshake access stage, the user equipment can perform capability negotiation with the access equipment according to the determined target carrier set. Therefore, inthe embodiment of the invention, when the user equipment is on line, the selection of the carrier set can be completed in the conflict control access stage, so that the carrier set selection can be carried out in the handshake access stage subsequently, i.e., independent signaling interaction is not needed, the interaction process is reduced, and the access time is shortened.