Lg Electronics Inc.

Beom Jin Jeon

Taek Soo Kim

Hyeon Cheol Cho

Joong Heon Kim

Min Soo Lee

Yong Kim

Jinho Kim

Seungryul Yang

Minsoo Lee

Jin Ho Kim

Jangwoong Park

Youngwook Kang

Alexey Rubtsov

Alexander Flaksman

Young Wook Kang

Chanhun Jeon

Sergey Tiraspolsky

A wireless network includes a current coordinator, at least one device which is currently associated with the wireless network, and a device selected as a new coordinator among the at least one device by the current coordinator. The current coordinator transmits a handover request message to the new coordinator; receives a handover response message in response to the handover request message from the new coordinator, the handover response message including a reason code field that is set to 'success'; and broadcasts one or more beacons, each beacon including identification information which identifies the new coordinator and number information which indicates a number of remaining beacons that the current coordinator will broadcast before a handover occurs. The number information included in a last beacon among the one or more beacons is set to '0,' and the new coordinator broadcasts a beacon after receiving the last beacon from the current coordinator.

Method of communicating in wireless network

A control target device receives, from a control point device connected to a first network, a message for requesting movement to a second network. The control target device transmits a network movement advertising message to the control point device of the first network. The control target device disconnects from the first network and accesses the second network. The control point device collects device information on a plurality of control target devices connected to a plurality of networks. When a network of one control target device selected from the plurality of control target devices is different from a network of the control point device, the control point device accesses the network of the selected control target device.

Control apparatus, control target apparatus, and method for operating the control, apparatus and the control target apparatus in multiple networks

A method of allocating channel resources in a wireless network is disclosed. The method of allocating instant channel resources in a wireless network includes receiving channel resource scheduling information of a specific superframe from a coordinator of the wireless network, requesting the coordinator to allocate instant channel resources for an unreserved duration of the specific superframe, and receiving an announcement message from the coordinator, the announcement message announcing allocation of the instant channel resources within the unreserved duration of the specific superframe.

Method of allocating resources in a wireless network

A method of channel assessment and channel searching in a wireless network is disclosed. The wireless network separately performs a channel assessment procedure and a channel searching procedure for channel change or another object. The channel assessment procedure is to measure a status or quality of a channel which is currently used in the wireless network. A coordinator of the wireless network designates a time interval for the channel assessment to notify other device of it. The channel assessment procedure may be performed periodically, and is preferably scheduled to allow other devices not to use the channel for the time interval which at least one device performs channel assessment.

Method of channel assessment and channel searching in a wireless network

A device for allocating a channel resource in a wireless network includes a Media Access Control (MAC)/MAC Layer Management Entity (MLME) sublayer and the MAC/MLME sublayer receives a primitive requesting to transmit a message for requesting the channel resource from an upper layer; transmits the message for requesting the channel resource to a coordinator, wherein the message for requesting the channel resource includes information about a duration of the channel resource; and receives channel resource allocation information for allocating the channel resource from a MAC/MLME sublayer of the coordinator, the channel resource allocation information including information about a duration of the allocated channel resource, wherein the device transmits a first message to a second device during the channel resource allocated based upon the channel resource allocation information, and receives a second message from the second device in response to the first message during the allocated channel resource.

Initiating a session over a High Definition Base T (HDBaseT) network. This may involve receiving a message requesting an initiation of a session from an initiation apparatus over an Ethernet network; and transmitting, a response message in response to the request message to the initiation apparatus over the Ethernet network. The request message may include a first source entity reference field for identifying the initiation apparatus and a first destination entity reference field for identifying the session partner, the first source entity reference field includes a Medium Access Control (MAC) address for identifying a management entity contained in the initiation apparatus and a HDBaseT group port identifier (TPG ID) for identifying a port of the initiation apparatus, and the first destination entity reference field includes a Medium Access Control (MAC) address for identifying a management entity contained in the session partner and a HDBaseT group port identifier (TPG ID) for identifying a port of the session partner.

Method and an apparatus for initiating a session in home network system

Relating to a home network system and a home entertainment system, a method and an apparatus for transmitting packets in a home network system and a home entertainment system are disclosed. Additionally, a method for identifying devices to which the packets are to be transmitted and an apparatus for supporting the same are also disclosed herein. According to an embodiment, a method for transmitting a packet in a high definition base transmission (hereinafter referred to as HDBaseT) system includes the steps of receiving data from a source device in a transmission adaptor, converting the received data from the transmission adaptor to a downstream packet, in order to transmit the converted downstream packet to a receiving adaptor through an HDBaseT network, and transmitting the converted downstream packet to the receiving adaptor; At this point, the downstream packet may include a hierarchical identifier for identifying HDBaseT entities to which the downstream packet is to be transmitted.

Method and an apparatus for transmitting messages in home network system

A method of allocating channel resources from a first device to a second device in a wireless network comprises receiving channel resource allocation information from a coordinator of the wireless network to allocate the channel resources; transmitting data to the second device through the allocated channel resources; receiving channel resource request information from the second device to request the first device to allocate a part of the allocated channel resources; and deciding whether to allocate the part of the channel resources allocated from the coordinator, to the second device in accordance with the channel resource request information.

Method of channel resource allocation and devices in wireless networks

A method for supporting a session routing in a High Definition Base transmission (HDBaseT) network, the method including receiving, by an HDbaseT device from a Routing Processor Entity (RPE) through the HDBaseT network, a Link Status Request message requesting Link status information; configuring a Link Status Notify message for supporting the session routing, the Link Status Notify message including Link status information; and transmitting the Link Status Notify message to the RPE through the HDbaseT network. The Link status information of the Link Status Notify message is used to update a Link Status table, the Link Status table is used to compute routing path information from a source device to a sink device in the HDbaseT network, the HDbaseT device provides a simultaneous transmission of multiple streams, a transmission of uncompressed data, and a power transmission through a single link, and the multiple streams are transmitted uncompressed.

Method and apparatus for session routing in home network system

Relating to a home network system and a home entertainment system, a method and an apparatus for transmitting packets in a home network system and a home entertainment system are disclosed. Additionally, a method for identifying devices to which the packets are to be transmitted and an apparatus for supporting the same are also disclosed herein. According to an embodiment, a method for transmitting a packet in a high definition base transmission (hereinafter referred to as HDBaseT) system includes the steps of receiving data from a source device in a transmission adaptor, converting the received data from the transmission adaptor to a downstream packet, in order to transmit the converted downstream packet to a receiving adaptor through an HDBaseT network, and transmitting the converted downstream packet to the receiving adaptor. At this point, the downstream packet may include a hierarchical identifier for identifying HDBaseT entities to which the downstream packet is to be transmitted.

A method and apparatus for initiating a session in a home network system are disclosed. A method for initiating a session over a HDBaseT network includes transmitting, by an initiation entity, a session initiation request message for initiating the session to at least one session partner selected by the initiation entity over an Ethernet network, and receiving a session initiation response message acting as a response to the session partner over the Ethernet network. The session initiation request message includes a first source reference field for identifying the initiation entity and a second final target reference (FTR) field for identifying the at least one session partner.

The present invention relates to a pre-coding method for spatial multiplexing, comprising the steps of: performing a beam search for beam forming with a receiver device equipped with multiple antennas to perform pre-coding for spatial multiplexing in a transmitter device equipped with multiple antennas; transmitting a first packet including at least one or more training sequences to the receiver device after completion of said beam search; receiving, from the receiver device, a second packet including feedback information for pre-coding, determined in the receiver device by using the training sequences; and performing pre-coding for spatial multiplexing, onto the data stream to be transmitted to the receiver device, by using the pre-coding matrix calculated on the basis of the feedback information.

Pre-coding method for spatial multiplexing in multiple input and output system

The present invention related to a method in which a transmitting device transmits a packet in a wireless network, wherein said method comprises: a step of receiving, from an upper layer, video data divided into a plurality of slices and compressed into one or more types of layers; a step of constructing a MAC packet such that information on the types of said one or more layers of the video data is included in a MAC header of the MAC packet; and a step of delivering the MAC packet to a lower layer to transmit the MAC packet to a receiving device.

Growing community of inventors

Seoul, South Korea

Beom Jin Jeon