Embodiments described herein provide for a satellite device that can be associated with a user account of a minor aged (e.g., child or adolescent) user that does not have a smartphone that can be used as a companion device to the satellite device. The satellite device can be configured to be used as a primary device, without reliance upon a paired smartphone. Certain information can be synchronized with the satellite device via the association with the family account. During initial configuration, a set of cryptographic keys can be generated to associate the account of the satellite device with the set of accounts in the family. The satellite device can then access calendars, media, or other data that is shared with user accounts within a family of user accounts.

The present disclosure provides a security mechanism to mitigate the risk of trackability of a UE engaged in groupcast communication. The security mechanism makes use of cryptographic functions and thus provides a cryptographic-grade protection for groupcast communications. The security mechanism can be implemented without any additional signaling for even additional parameters in existing signaling message.

A radio device includes a storage unit, a group call control unit, and a cipher key generation unit. The storage unit is configured to store therein a plurality of primary cipher keys, a plurality of pieces of device information, and a plurality of pieces of group information. The group call control unit is configured to perform a group call with radio devices belonging to a first group using a primary cipher key. The cipher key generation unit is configured to generate a secondary cipher key that is different from the primary cipher key when one or more radio devices belonging to the first group are selected during the group call. The group call control unit performs a temporary group call with the selected radio devices by switching the primary cipher key to the secondary cipher key.

A radio device includes a storage unit, a group call control unit, and a cipher key generation unit. The storage unit is configured to store therein a plurality of primary cipher keys, a plurality of pieces of device information, and a plurality of pieces of group information. The group call control unit is configured to perform a group call with radio devices belonging to a first group using a primary cipher key. The cipher key generation unit is configured to generate a secondary cipher key that is different from the primary cipher key when one or more radio devices belonging to the first group are selected during the group call. The group call control unit performs a temporary group call with the selected radio devices by switching the primary cipher key to the secondary cipher key.

Methods, systems, and devices for communications are described. A device or a group of devices may generate data. The group of devices may receive a group profile from a node that identifies the devices to be included, and the group profile may include a function to be evaluated at each of the devices. The node may also provision evaluation parameters which may allow the device to provide authenticated aggregate data to a requesting third party, without sharing the data between the devices and without sharing the data with the node, thus concurrently maintaining individual data privacy and data provenance.

Embodiments of the present invention provide a synchronization signal block indication method, a synchronization signal block determining method, a network device, and a terminal device. The method includes: generating, by a network device, a synchronization signal block indication message, where the synchronization signal block indication message includes synchronization signal block group indication information which is used to indicate an synchronization signal block group sent by the network device, and synchronization signal block indication information is used to indicate an synchronization signal block sent by the network device in each synchronization signal block group, and locations of a synchronization signal block sent by the network device in synchronization signal block groups sent by the network device are the same; and sending, by the network device, the synchronization signal block indication message.

Embodiments of the present invention provide a synchronization signal block indication method, a synchronization signal block determining method, a network device, and a terminal device. The method includes: generating, by a network device, a synchronization signal block indication message, where the synchronization signal block indication message includes synchronization signal block group indication information which is used to indicate an synchronization signal block group sent by the network device, and synchronization signal block indication information is used to indicate an synchronization signal block sent by the network device in each synchronization signal block group, and locations of a synchronization signal block sent by the network device in synchronization signal block groups sent by the network device are the same; and sending, by the network device, the synchronization signal block indication message.

Aspects of this disclosure relate to assigning scrambling identifiers to user equipments. A first scrambling identifier can be assigned to each user equipment of a group, such that the first scrambling identifier is the same for each of the user equipments of the group. A second scrambling identifier can be assigned to each of the user equipments of the group, such that the second scrambling identifier is different for each of the user equipments of the group. A selected scrambling identifier can be used to generate a reference signal sequence.

Internet-of-things (IOT) devices can be identified based on specific behavioral patterns when their identification data is unknown. Previously identified IOT devices with similar behavioral patterns can be used as a baseline from which to compare data that is available about unknown IOT devices. For example, an IOT device can be pooled with a group of IOT devices based on the frequency with which they connect to a wireless network. Additionally, a confidence level of the unknown device being associated with the group of IOT devices can be generated based on such comparison data.

Internet-of-things (IOT) devices can be identified based on specific behavioral patterns when their identification data is unknown. Previously identified IOT devices with similar behavioral patterns can be used as a baseline from which to compare data that is available about unknown IOT devices. For example, an IOT device can be pooled with a group of IOT devices based on the frequency with which they connect to a wireless network. Additionally, a confidence level of the unknown device being associated with the group of IOT devices can be generated based on such comparison data.