Terranet Ab

Switchcore, A.b.

Telefonaktiebolaget Lm Ericsson (publ)

Stig Halvarsson

Monthadar Al Jaberi

Ingemar Hammarström

Lars Tilly

According to one aspect there is provided an audio systemcomprising a transmission unitand a plurality of speaker units---N, wherein the transmission unitcomprises a controllerand a wireless communication interfacearranged for communication according to an IEEE 802.11 standard (WiFi™), wherein the controlleris configured to: receive an audio data package to be played back; and to transmit the audio data package to be played back over the wireless communication interfaceutilizing the same protocol for the transmission of the audio data package and for synchronizing the playback of the audio data, and wherein each of plurality of the speaker units---N comprises a controller, a PCM-, a speaker elementand a wireless communication interfacearranged for communication according to an IEEE 802.11 standard (WiFi™), wherein the controlleris configured to: receive the at least one data package to be played back through the wireless communication interfaceand to cause audio represented by the received audio data package to be played back through the speaker elementby feeding the audio data to the PCM-being connected to the speaker element

System, device and a method for providing an improved WiFi™ audio system

A station of a mesh network comprising a peer table which is configured to list neighboring peers within the mesh network. Each peer comprises a qualification grade and the station comprises a controller which is configured to detect a new peer entering the mesh network and to establish a peer connection with the new peer. The controller is also configured to add the new peer to the peer table and to determine if the peer table is full when the new peer has been added. The controller is further configured to compare the qualification grades of the neighboring peers in the peer table if the peer table is full, and to remove a peer having a high qualification grade in relation to the neighboring peers in the peer table.

Enhanced peer discovery in a mesh network

Disclosed is a station of a mesh network, wherein the station is configured to transmit and receive data packets comprising a header which comprises a mesh mode channel switch announcement element and a mesh channel switch parameter element. The station also comprises: If the amount of lost data packets exceeds a drop threshold, the controller is further configured to determine if at least one communication criterion is fulfilled. If the controller determines that the at least one communication criterion is fulfilled, then the controller is configured to move the communication from the first communication channel to a second communication channel during the remainder of the communication. The movement of the communication from the first communication channel to the second communication channel is unrestricted in time or time scheduled. A method for a mesh station as well as a computer program product is also disclosed.

Interference mitigation in dense mesh networks

A network device () comprising a memory (), an interface () and a controller () for use in a mesh network comprising at least one another network device () wherein said memory () is configured for storing at least one contact () and said controller () is configured to: receive a contact list () containing at least one contact from the another network device () and compare the at least one received contact with the at least one contact stored in the memory () and if there is no match, store the received at least one contact and forward said at least one received contact.

Dynamic contact sharing in a mesh network

A method may include storing N number of Fast Fourier Transform (FFT) data points into x-memories, N and x being integers greater than one, and the x-memories having a total memory capacity equivalent to store the N number of FFT data points, and reading K FFT data points of the N number of FFT data points from each of the x-memories so that the N number of FFT data points are read, K being an integer greater than one. The method may further include performing parallel radix-m FFTs on the x*K number of FFT data points, multiplying the x*K number of FFT data points by twiddle factors to obtain resultants, shifting the resultants, and writing back the shifted resultants of the x*K number of FFT data points to the x-memories. The method may also include repeating the reading, the multiplying, the shifting and the writing back until the N number of FFT data points have been completely transformed into an FFT resultant, and where there is x*K number of FFT data points available for processing during every repetition, and outputting the FFT resultant.

FFT-based parallel system with memory reuse scheme

A device for data stream analyzing that is able to recognize different data streams and then start processors or functionalities to store or check data in a data stream. The device includes a processor means and a program memory, making it possible to parse a data stream in a way that is controlled by an interchangeable program. There will be no need for changing the hardware. This could save time and money for companies responsible for providing, maintaining and updating network switches. The device also includes a multiplexable data stream delayline for receiving the data streams, and multiplexing means for connecting different parts of the data stream to the processor.

Device for data stream decoding

A device for data stream analyzing that is able to recognize different data streams and then start processors or functionalities to store or check data in a data stream. The device includes a processor means and a program memory, making it possible to parse a data stream in a way that is controlled by an interchangeable program. There will be no need for changing the hardware. This could save time and money for companies responsible for providing, maintaining and updating network switches. The device also includes a multiplexable data stream delayline for receiving the data streams, and multiplexing means for connecting different parts of the data stream to the processor means.

Growing community of inventors

Lund, Sweden

Stig Halvarsson