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AssigneeLG Electronics Inc.
InventorsHyowon Bae, Jungwoo Kim, Jinmin Kim, Jaewook Song, Jinsoo Choi
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A method by which a first wireless device maintains beamforming in a wireless AV system, according to one embodiment of the present invention, comprises the steps of: transmitting a packet including a non-training field and a plurality of training fields to a second wireless device, wherein the non-training field is transmitted on the basis of the best sector combination from among a plurality of candidate sector combinations predetermined between the first wireless device and the second wireless device, and the plurality of training fields is transmitted on the basis of the plurality of candidate sector combinations; receiving candidate beam feedback information as a response to the plurality of training fields; determining, on the basis of the candidate beam feedback information, whether a channel change due to an obstacle occurs; and updating the best sector combination on the basis of the candidate beam feedback information when it is determined that the channel change occurs.
A method for maintaining beamforming in a wireless audio-video (AV) system, the method comprising:
A first wireless device performing a method for maintaining beamforming in a wireless audio-video (AV) system, the first wireless device comprising:
Dependencies are inferred from the claim text.
From the US filing history. Foreign family members aren’t listed.
No references of this kind are recorded.
Of weighted versions of same signal: for beam forming
Using two or more spaced independent antennas: using two or more beams, i.e. beam diversity
Using two or more spaced independent antennas: mIMO systems
Using two or more spaced independent antennas: using two or more sectors, i.e. sector diversity
About 12 years 7 months of term left · ends 24 May 2039 (estimated)
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This application is the National Phase of PCT International Application No. PCT/KR2019/005416, filed on May 7, 2019, which is hereby expressly incorporated by reference into the present application.
The present specification relates to a wireless device and, most particularly, to a method for maintaining beamforming in a wireless Audio-Video (AV) system and a wireless device using the same.
Recently, there is a growing demand for high-resolution and high-quality pictures such as a high definition (HD) picture and an ultra-high definition (UHD) picture in various fields. The higher the resolution and quality of picture data, the greater the amount of information of bits to be transmitted relative to the existing picture data. Therefore, transmission cost may increase when the picture data is transmitted using a medium such as the existing wired/wireless broadband line.
FIG. 1 is a conceptual diagram showing a structure of a wireless LAN system.
FIG. 2 is a conceptual diagram of a hierarchical architecture of a wireless LAN system supported by IEEE 802.11.
FIG. 3 is a diagram for describing an access period within a beacon interval.
Hereinafter, embodiments related to the present specification will be described in detail with reference to the accompanying drawings. The suffixes “module” and “unit” for components that are used in the following description are given or interchangeably used in order to merely facilitate the description of the present specification. And, therefore, such suffixes do not have any distinctive meaning or role by themselves.
A wireless device according to an embodiment of the present specification is, for example, an intelligent display device having computer supporting functions added to a broadcast receiving function. And, therefore, while being dedicated to the broadcast receiving function, since an Internet function, and so on, are added herein, the wireless device may also be equipped with an easy-to-use interface, such as a handwriting input device, a touch screen, or a spatial remote controller, and so on. Moreover, with the support of a wired or wireless internet function, the wireless device may access the Internet and other computers, thereby being capable of performing various functions, such as receiving/sending e-mails, web browsing, banking, or playing games. In order to achieve such functions, a standardized universal OS may be used.
Herein, for example, since various types of applications may be freely added or deleted within a universal OS kernel, the wireless device that is described in the present specification may perform various user-friendly functions. More specifically, for example, the wireless device may be a network TV, an HBBTV, a smart TV, an LED TV, an OLED TV, and so on. And, in some cases, the wireless device is also applicable to smartphones.