Service discovery method and device in wireless LAN system
AssigneeLG Electronics Inc.
InventorsSuhwook Kim, Byungjoo Lee, Hangyu Cho
Life of this patent
Estimating the term…
Abstract
The present invention relates to a wireless communication system, and more particularly, to a service discovery method and device in a wireless LAN system. A service discovery method in a wireless LAN system according to one embodiment of the present invention can comprise: transmitting, by a request device, a service discovery request frame to a response device; and receiving, by the request device, a service discovery response frame, which comprises service information of the response device and service information of each of one or more other devices, from the response device. The one or more other devices can comprise a device which does not belong to the same group as the response device.
Claims18
A method of performing a service discovery process in a wireless LAN system, the method comprising:
- transmitting, by a requesting device, a service discovery request frame to a group owner device, the service discovery request frame including a service protocol type field with a specific bit that indicates whether a cached service discovery is requested,
- wherein the requesting device and the group owner device are included in a group of devices established by the requesting device and the group owner device, and
- wherein the group owner device controls the group and identifies first service information of devices included in the group;
- and
- receiving, by the requesting device, a service discovery response frame from the group owner device, the service discovery response frame including the first service information and second service information of the group owner device,
- wherein the service discovery response frame further includes service information of devices not included in the group when the cached service discovery is requested.
A method of performing a service discovery process in a wireless LAN system, the method comprising:
- receiving, by a group owner device, a service discovery request frame from a requesting device, the service discovery request frame including a service protocol type field with a specific bit that indicates whether a cached service discovery is requested,
- wherein the requesting device and the group owner device are included in a group of devices established by the requesting device and the group owner device, and
- wherein the group owner device controls the group and identifies first service information of devices included in the group;
- and
- transmitting, by the group owner device, a service discovery response frame to the group owner device, the service discovery response frame including the first service information and second service information of the group owner device,
- wherein the service discovery response frame further includes service information of devices not included in the group when the cached service discovery is requested.
A requesting device performing a service discovery process in a wireless LAN system, the device comprising:
- a transceiver configured to transmit and receive information;
- and
- a processor configured to:
- control the transceiver to transmit a service discovery request frame to a group owner device, the service discovery request frame including a service protocol type field with a specific bit that indicates whether a cached service discovery is requested,
- wherein the requesting device and the group owner device are included in a group of devices established by the requesting device and the group owner device, and
- wherein the group owner device controls the group and identifies first service information of devices included in the group;
- and
- control the transceiver to receive a service discovery response frame from the group owner device, the service discovery response frame including the first service information and second service information of the group owner device,
- wherein the service discovery response frame further includes service information of devices not included in the group when the cached service discovery is requested.
A group owner device performing a service discovery process in a wireless LAN system, the device comprising:
- a transceiver configured to transmit and receive information;
- and
- a processor configured to:
- control the transceiver to receive a service discovery request frame from a requesting device, the service discovery request frame including a service protocol type field with a specific bit that indicates whether a cached service discovery is requested,
- wherein the requesting device and the group owner device are included in a group of devices established by the requesting device and the group owner device, and
- wherein the group owner device controls the group and identifies first service information of devices included in the group;
- and
- control the transceiver to transmit a service discovery response frame to the group owner device, the service discovery response frame including the first service information and second service information of the group owner device,
- wherein the service discovery response frame further includes service information of devices not included in the group when the cached service discovery is requested.
Dependencies are inferred from the claim text.