Abstract: Embodiments disclose an access point (AP) discovery method and apparatus, where the method is applied to a neighbor awareness network (NAN). The NAN includes a first device and a second device. The method includes: sending, by the first device, a query message to the second device by using the NAN, where the query message is used to search for an access point AP; and receiving a response message that the second device sends in response to the query message, where the response message includes description information, of at least one AP, obtained by the second device.

Abstract: In a process for a wireless network device in a first Neighbor Awareness Network device cluster (NAN cluster) to join a second NAN cluster, the wireless network device first discovers the second NAN cluster. It calculates a first score based on multiple pieces of attribute information of the first NAN cluster, and a second score based on multiple pieces of attribute information of the second NAN cluster, compares the first score and the second score, and determines to join the second NAN cluster when the second score is greater than the first score. Then it sends an event message to other wireless network devices in the first NAN cluster to inform them to join the second NAN cluster, stops participating in the first NAN Cluster by not contending for serving as a synchronization device in the first NAN Cluster, and joins the second NAN cluster.

Abstract: Embodiments of the present invention provide a method and an apparatus for performing service discovery in a neighbor awareness network NAN. The method includes: obtaining, by a first device, change information in the NAN, and generating a first service identifier according to the change information and first service information, where the change information includes: global change information in the NAN, or change information of the first device; and sending a service message to a second device, where the service message includes the first service identifier. In the embodiments of the present invention, security can be improved.

Abstract: A data transmission method and device, where the method includes determining, by a first station device, that a second station device supports a first service, receiving a device group join request message that is sent by the second station device according to a media access control (MAC) address of a first device group, where the first device group is a device group of the first service and is a device group to which the first station device belongs, sending a device group join response message to another station device in the first device group and the second station device according to the multicast MAC address of the first device group in a contention transmission manner, and performing data transmission of the first service with the second station device in a service window of the first service, where the service window includes a time and/or a channel of service transmission.

Abstract: Embodiments of the present invention provide an information query method and device, which can reduce a waste of resources in an information query process, and decrease power consumption. The method includes: sending, by a requesting device in a broadcast manner, a first query request message, where the first query request message carries a first query condition and information about a group identity; and when the requesting device receives a first query response message sent by a responding device that meets the first query condition, sending, by the requesting device, a second query request message that uses the group identity as a receiving address, so that the responding device processes the second query request message.

Abstract: A method, apparatus and system for software management are provided that relate to the technical field of communications, and that allow software installed on a Universal Plug and Play (UPnP) device by a service provider to be managed only by that service provider. The method comprises receiving a software installation command sent by a first control device, installing software according to the software installation command and storing a first authentication information required during management of the software; receiving a software management command sent by a second control device, and acquiring a second authentication information corresponding to the software management command, which command is used in managing the software; when the second authentication information is consistent with the first authentication information, executing the software management command.

Abstract: The present invention provides novel crystalline forms of apremilast hemitoluene solvate, apremilast hydrate, and apremilast anhydrate and an amorphous form of apremilast, and processes for the preparation of these forms.

Abstract: A method includes: after receiving an operation instruction of a first user, generating, by a first device, connection information according to the operation instruction, and providing the connection information to a second device near the first device, so that the second device obtains a first identifier through calculation according to a first information portion of the connection information by using a preset algorithm; receiving a first message that is sent by the second device according to the connection information, where the first message carries the first identifier; determining whether the first identifier matches a second identifier of the first device, where the second identifier is equal to or corresponds to a result that is generated through calculation according to the first information portion; if the first identifier matches the second identifier, sending a second message to the second device; and establishing a wireless connection to the second device.

Abstract: A communication method and a device, where the method includes receiving, by a first device, a first message sent by a second device using a peer-to-peer (P2P) network, where the first message includes address information of the second device in an infrastructure network and identification information of a radio access device connected to the second device in the infrastructure network, and when a radio access device connected to the first device and the radio access device connected to the second device in the infrastructure network are a same radio access device, communicating, by the first device, with the second device according to the address information using the connected radio access device.

Abstract: A durable nerve cuff electrode for achieving block of an action potential in a large diameter nerve.

Abstract: An inter-device discovery method includes: sending, by a first device, a service query request message to a second device, where the service query request message includes service information that the first device needs to query, so that the second device determines, according to the service information, whether to respond to the service query request message; receiving, by the first device, a service query response message, where the service query response message includes a public key derivative value of the second device; obtaining, by the first device, public key matching information; and after verifying that the public key matching information matches the public key derivative value, sending, by the first device, communication information to the second device to communicate with the second device. The present invention is applicable to a wireless communications device such as a Wi-Fi or Bluetooth device.

Abstract: A service discovery method includes: performing, by a service request end, service discovery separately based on different networks, for a same service; correspondingly receiving, by using each network based on which the same service can be discovered in the different networks, identifier information provided by a service providing end providing the same service, where the identifier information is used to identify the service providing end; when identifier information obtained by using at least two networks matches, determining that services discovered after service discovery is performed based on the at least two networks are the same service provided by the same service providing end; and when accessing the same service at a time, performing service data transmission by using the at least two networks.

Abstract: A method for anchor master selection includes: a device receives a NAN Beacon frame, where the NAN Beacon frame carries first AM information and first TSF information, and the first AM information includes: a first AMR, a first HC, and a first AMBTT; if the NAN Beacon frame is used for AM selection, when the first AMR is less than a second AMR and an MR of the device is greater than the first AMR, switching a role of the device to AM, where second AM information recorded in the device includes: the second AMR, a second HC, and a second AMBTT; and if the NAN Beacon frame is used for AM selection, when the first AMR is less than the second AMR, and the MR of the device is less than the first AMR, updating the second AM information and second TSF information according to the NAN Beacon frame.

Abstract: A method implemented in an access point (AP) includes sending first communication address change information to a station to notify the station of a communication address which is to be used by the AP after the AP changes a communication address, the first communication address change information includes at least a third communication address, and the third communication address is the communication address which is to be used by the AP after the AP changes the communication address; determining a fourth communication address, where the fourth communication address is a communication address which is to be used by the station after the station changes a communication address; and switching the communication address from a first communication address to the third communication address, and using the third communication address to communicate with the station whose communication address is switched from a second communication address to the fourth communication address.

Abstract: A method for anchor master selection includes: a device receives a NAN Beacon frame, where the NAN Beacon frame carries first AM information and first TSF information, and the first AM information includes: a first AMR, a first HC, and a first AMBTT; if the NAN Beacon frame is used for AM selection, when the first AMR is less than a second AMR and an MR of the device is greater than the first AMR, switching a role of the device to AM, where second AM information recorded in the device includes: the second AMR, a second HC, and a second AMBTT; and if the NAN Beacon frame is used for AM selection, when the first AMR is less than the second AMR, and the MR of the device is less than the first AMR, updating the second AM information and second TSF information according to the NAN Beacon frame.

Abstract: The present invention provides novel crystalline forms of apremilast hemitoluene solvate, apremilast hydrate, and apremilast anhydrate and an amorphous form of apremilast, and processes for the preparation of these forms.

Abstract: Embodiments provide a service discovery method. The method includes a first device, using an access point, sending a service discovery request to at least one second device connected to the access point, where the service discovery request is used to query, from the at least one second device, a service that the first device requests to query. The method also includes the first device receiving a service discovery response sent by the at least one second device, where the service discovery response is a response of the at least one second device to the service discovery request, and the service discovery response includes a service supported by the at least one second device.

Abstract: An image sensor structure and a method for forming the same are provided. The image sensor structure includes a first substrate including a first radiation sensing region and a first interconnect structure formed over a front side of the first substrate. The image sensor structure further includes a second substrate including a second radiation sensing region and a second interconnect structure formed over a front side of the second substrate. In addition, the first interconnect structure is bonded with the second interconnect structure.

Abstract: The present invention provides intermediates for preparing abiraterone, and processes for preparing abiraterone and intermediates thereof. The intermediates include a compound of formula (IV): wherein R represents a hydroxy-protecting group.

Abstract: A method for allocating an addressing identifier includes: notifying, by an access point, at least two stations of an encrypted new MAC address that corresponds to each station, and indicating a predetermined update condition, so that the at least two stations update respective MAC addresses to the respective new MAC addresses when the predetermined update condition is met; and when the predetermined update condition is met, updating, by the access point, the MAC addresses of the at least two stations to the new MAC addresses that correspond to the stations, so that when a message is subsequently received from the stations or sent to the stations, the new MAC addresses are used as the MAC addresses of the stations. In the foregoing manner, the present invention can prevent an eavesdropper from tracing, by using a MAC address, a terminal to acquire user privacy, ensuring security of the user privacy.