The present disclosure relates to network connection methods and devices for connecting a terminal device to a network through a network access device. The network access device may include a processor and a connection configuration component. The processor receives a connection request from the terminal device. The processor also authenticates the terminal device based on the connection request, and obtains a verified Internet protocol (IP) address from the connection configuration component. The processor further transmits the verified IP address to the terminal device after the terminal device is authenticated, wherein the terminal device is configured to be connected to the network by using the verified IP address.

Certain aspects of the present disclosure relate to methods and apparatuses for signaling mode changes to a plurality of wireless devices. For example, certain aspects provide a method including determining, by a base station, a group of wireless devices of a plurality of wireless devices served by the base station to transition to a first mode of operation, wherein at least one of: the first mode of operation is an inactive mode or at least one of the group of wireless devices is in the inactive mode. The method further includes generating a message comprising information indicative of an identifier associated with the group of wireless devices and information indicative of the first mode of operation. The method further includes multicasting the message to the group of wireless devices.

A Domain Name System (DNS) resolver node receives a first DNS query from a first client device. The resolver node determines that it cannot answer the query using its local cache so it performs a recursive query to obtain the answer. The answer is sent to the first client and stored in its local cache. The resolver node further transmits the answer to multiple other resolver nodes that are part of the same cluster so they can update their respective local cache with the information. Upon receiving a message from another resolver node that includes a set of resource record(s) not in its local cache, the resolver node stores that set of resource record(s) in its local cache so that it can locally answer subsequent requests for those resource record(s) locally.

A Domain Name System (DNS) resolver node receives a first DNS query from a first client device. The resolver node determines that it cannot answer the query using its local cache so it performs a recursive query to obtain the answer. The answer is sent to the first client and stored in its local cache. The resolver node further transmits the answer to multiple other resolver nodes that are part of the same cluster so they can update their respective local cache with the information. Upon receiving a message from another resolver node that includes a set of resource record(s) not in its local cache, the resolver node stores that set of resource record(s) in its local cache so that it can locally answer subsequent requests for those resource record(s) locally.

To distribute messages to subscribers that are located in multiple regions, a data center will receive messages that to be published to the subscribers. For each message, the data center will determine a channel on which the message is to be published. For any given channel, the data center will then perform a limited replication process to other data centers in other regions by accessing an interest map indicating additional data centers at which subscribers to the channel have recently expressed interest. The data center will transmit the messages that are associated with the channel to only that group of additional data centers for replication but not to other data centers at which no interest has been recently expressed.

To distribute messages to subscribers that are located in multiple regions, a data center will receive messages that to be published to the subscribers. For each message, the data center will determine a channel on which the message is to be published. For any given channel, the data center will then perform a limited replication process to other data centers in other regions by accessing an interest map indicating additional data centers at which subscribers to the channel have recently expressed interest. The data center will transmit the messages that are associated with the channel to only that group of additional data centers for replication but not to other data centers at which no interest has been recently expressed.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, a group identifier of the UE. The UE may receive, from the base station, an indication of one or more group identifiers associated with scheduled communications with the base station during a time period. The UE may contend, based at least in part on the group identifier of the UE and the one or more group identifiers received from the base station, for access to a set of autonomous uplink (AUL) resources during the time period. The UE may perform, based at least in part on the contending, an AUL transmission to the base station using the set of autonomous uplink resources.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, a group identifier of the UE. The UE may receive, from the base station, an indication of one or more group identifiers associated with scheduled communications with the base station during a time period. The UE may contend, based at least in part on the group identifier of the UE and the one or more group identifiers received from the base station, for access to a set of autonomous uplink (AUL) resources during the time period. The UE may perform, based at least in part on the contending, an AUL transmission to the base station using the set of autonomous uplink resources.

A wireless communication device obtains configuration information defining multiple geographical areas. Further, the wireless communication device sends an outgoing D2D transmission. The outgoing D2D transmission comprises an area identifier to identify one of the geographical areas as target geographical area of the outgoing D2D transmission and to address the outgoing D2D transmission to one or more wireless communication devices in the identified target geographical area of the outgoing D2D transmission.

Embodiments of the present disclosure include techniques for discovering services across networks based on a multicast domain name system (mDNS) protocol. An mDNS request for available services in a network is received from a client device. The client device belongs to a particular layer 2 (L2) domain. In response to receiving the mDNS request, a storage of the network device configured to store service records is queried to determine a set of available services. The set of available services is provided in a L2 domain different from the particular L2 domain. A response that includes the set of available services is generated. The response is sent to the client device.