The present application discloses a method of issuing pseudonymous authorisation tickets to nodes of a cooperative ITS, for signing messages, comprising: receiving a ticket request from a node in an authorisation server, and sending a validation request to an enrolment server, conducting a validity check in the enrolment server, and, when the validity check is passed, incrementing a counter value of a counter assigned to an account at an account server enrolled with the enrolment server for the requesting node, sending a validation message to the authorisation server, and issuing a pseudonymous authorisation ticket from the authorisation server to the requesting node, repeating the aforementioned steps until a predetermined charging period expires, and, upon expiry, sending, from the enrolment server to the authorisation server, said counter value, and sending a charging request calculated from said counter value from the authorisation server to the account server for charging said account.

Methods, systems, and devices relate to digital wireless communication, and more specifically, to techniques relating to dynamic change MAC address of the station for subsequent transmissions. In one exemplary aspect, a method of dynamic change MAC address includes specifying a MAC address change mode and a new MAC address to be used by the station. In another exemplary aspect, a method of dual MAC address change mode in the dynamic change MAC address mechanism includes separating the unchanged MAC address of the station from the changeable MAC address of the station, and keep the mapping between them. In another exemplary aspect, a method includes transmitting a MAC address change request message from the station (or the access point) to initiate the MAC address change procedure. In another exemplary aspect, a method includes receiving a MAC address change response message from the access point (or the station).

A method for obtaining a command relating to a network access profile of an eUICC security module incorporated into a communication device and associated with a physical identifier. The communication terminal: obtains the physical identifier and an anonymous identifier of the security module is calculated from the physical identifier and a random parameter; transmits a request to obtain the command, via an “operator server”, to a “preparation server”, the request to obtain including the anonymous identifier of the security module; obtains the random parameter and calculates the anonymous identifier from the physical identifier of the security module and the random parameter; and sends, to a “discovery server”, a request to obtain information intended to obtain the command, this request to obtain information including the anonymous identifier, in order to obtain, in response, from the discovery server, an address of the preparation server.

Various device attributes associated with a current event may be obtained. Similarity metrics may be determined that indicate a degree of similarity between the device attributes that are associated with the current event and stored device attributes that are associated with previous events and previously created fuzzy device identifiers. A fuzzy device identifier may be assigned to the current event based at least in part on a comparison of the similarity metrics with a threshold. If none of the similarity metrics compare favorably with the threshold, then a new fuzzy device identifier may be created for the current event. However, if at least one of the similarity metrics compares favorably with the threshold, then the previously created fuzzy device identifier whose stored device attributes are most similar to the device attributes that are associated with the current event may be assigned to the current event.

A method of using subscriber identification information stored in mobile user equipment (UE) to connect to a communication service over a public wireless network in the UE, establishing a communication link between the UE and a device, generating network access information (NAI) associated with the communication service in the UE, and sending the NAI from the UE to the device via the communication link. The method further comprises connecting the communication service in the device using the NAI and terminating the connection of the communication service in the UE.

Disclosed examples include accessing a search term from a client device; accessing a first identifier, the first identifier corresponding to a first database proprietor, the first identifier to access first user information corresponding to a user of the client device; accessing a second identifier, the second identifier corresponding to a second database proprietor, the second identifier to access second user information corresponding to the user of the client device; providing the search term, the first identifier, and the second identifier in a message; and transmitting the message to a server.

Embodiments of apparatus and method for random access are disclosed. In an example, a user equipment can include at least one processor and at least one memory including computer program code. The at least one memory and the computer program code can be configured to, with the at least one processor, cause the user equipment at least to send a trigger message and unique identifier in a first message from the user equipment to a network node. The at least one memory and the computer program code can also be configured to, with the at least one processor, cause the user equipment at least to receive an acknowledgement at the user equipment in a second message from the network node using the user equipment's unique identifier. Contention resolution for the user equipment can be concluded with only the first message and the second message.

The apparatus includes at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to duplicate base station computation of an identifier value for a user equipment, and search for one or more control channel transmissions incorporating an identifier value matching the identifier value.

A communication method and a communications apparatus are provided. The method includes: when receiving a first PDU session establishment request sent by a UE, encrypting, by an access and management network element (AMF), user information in the request, to obtain encrypted user information; and sending, by the AMF, a second PDU session establishment request to an SMF in response to the first PDU session establishment request, where the second PDU session establishment request carries the encrypted user information. In this manner, after the UE accesses a core network, an AMF entity may encrypt user information of the UE. The interaction information between NF entities, for example, the AMF entity and an SMF entity, carries the encrypted user information, which helps prevent user privacy leakage.

A user equipment is configured for concealment of a mission-critical push-to-talk (MCPTT) group identity in multimedia broadcast multicast services (MBMS). The UE is configured in particular to receive an indication of an MCPTT group pseudonym (7) which is a pseudonym for an MCPTT group identity (11) that identifies an MCPTT group of which the UE is a member. The UE may for example receive this indication from a group management server (GMS) or an MCPTT server. The UE in some embodiments may determine whether received control signalling (e.g., an MBMS subchannel control message) is for the MCPTT group of which the UE is a member, by determining whether the control signaling includes the MCPTT group pseudonym (7).