Abstract: When an EMLSR-active non-AP MLD receives, over a first one of its EMLSR links, a first initial control frame from the EMLSR capable AP MLD that does not explicitly trigger it, the non-AP MLD remains in the EMLSR listening operation mode, hence requiring an additional initial control frame to be sent to initiate a frame exchange with the AP MLD. Embodiments of the invention save the cost of this additional frame by requiring the non-AP MLD to switch, responsive to the receiving of the first frame, its EMLSR co-affiliated STA corresponding to the first link from the listening operation state to a disabled frame exchange state, and the other EMLSR co-affiliated STA corresponding to another link of its EMLSR links from the listening operation state to an enabled frame exchange state. The other EMLSR co-affiliated STA is ready to directly receive frames from the AP MLD.

Abstract: In wireless networks implementing multilink transmissions, a non-AP MLD declares EMLMR capabilities in a ML Association Request, with a set of eligible EMLMR links. Eligible EMLMR links form part or all of the candidate links for set up with an AP MLD. The latter replies with a ML Association Response setting up candidate links and signalling which eligible EMLMR links are accepted. The signalling may involve a Status Code per each link. In operation, the non-AP MLD sends one or more EML OM Notification frames requesting an activation of an EMLMR mode. Such a frame includes an EML Link bitmap specifying the EMLMR links set to be used. Two EMLMR modes with two separate and disjoint EMLMR links sets can then be activated simultaneously.

Abstract: In wireless networks implementing multilink transmissions, an AP MLD spontaneously sends an EML OM Notification frame defining a proposal or suggestion to activate or deactivate or modify an EML OM, optionally with a proposed set of EML Links. Taking advantage of this opportunity, the addressee non-AP MLD initiates an EML OM activation or deactivation as suggested. Upon receiving a request for EML OM activation or deactivation, the AP MLD may refuse the request and respond with another proposed set of links. The signalling in the requesting frames may be simplified by using a single one-bit field to implicitly activate or deactivate the single EML OM, either EMLSR or EMLMR mode, declared as supported during the association of the non-AP MLD.

Abstract: ML beacon frames sent by AP MLD during ML Discovery report the profiles of all the affiliated APs. This duplication over multiple channels substantially reduces network bandwidth available for data transmission. A management AP amongst the affiliated APs is selected for processing the management and control frames. The ML beacon frames from the management AP convey the profiles of all the affiliated APs, while the other affiliated APs send lighter ML beacon frames that for instance indicate where to find the full ML beacon frames. The ML beacon frames hence signal, using a Link ID, which one of the affiliated APs is the management AP. Upon receiving a light ML beacon frame, the non-AP MLD can configure one of its affiliated non-AP station to communicate with the management AP, and then can switch the association procedure over this management link.

Abstract: To signal critical updates to BSS Parameters of reported affiliated APs, a reporting AP of the same AP MLD includes a MLD BSS Parameters Change Count in the ML element of its ML beacon frames. The Count is incremented at each new BSS parameter critical update announced or reported by the reported affiliated APs over time. A non-AP station of a non-AP MLD in ML Power Save mode receives such beacon frame and then directly accesses this information without parsing the complex Reduced Neighbor Report information element. The RNR IE can thus be omitted to save bandwidth. Next, the non-AP station requests the reporting AP for the missing updated BSS parameters of the reported APs, without waking up the reported non-AP stations of the non-AP MLD. The BSS parameters for these reported non-AP stations can then be updated with low complexity.

Abstract: The present invention concerns a communication method in a wireless communication network comprising an access point, AP, multi-link device, MLD, having multiple affiliated access points, and at least one station MLD, having multiple affiliated stations, both station MLD and AP MLD being able to exchange data using one or more links, the method comprising at the station MLD: transmitting to the AP MLD a multi-link buffer status report, ML-BSR, comprising an indication relating to an amount of data to be transmitted, for the AP MLD to schedule a resource to the station MLD to transmit data; and wherein the ML-BSR further comprises an indication relating to a link on which the station MLD expects to be scheduled for the transmission of the amount of data to be transmitted.

Abstract: In wireless networks implementing multilink transmissions, a non-AP Multi-Link Device, MLD, discovers an AP MLD and registers to it. To reduce risks of registration refusal from the AP MLD, the invention proposes mechanisms to enhance link advertising in exchanged management frames. In embodiments, the beacon frames or probe response frames during ML discovery categorize the Per-STA profiles of the reported affiliated APs. Such categorization is a recommendation from the AP MLD to promote or favor some links or affiliated APs compared to others. Lists of profiles per category can be provided or each profile can be tagged with a dedicated categorizing score. In other embodiments, the non-AP MLD indicates one or more backup links as alternatives to one or more of the setup links requested for ML setup. This allows the AP MLD to switch on a backup link in case a setup link is to be refused.

Abstract: The present invention concerns a communication method in a wireless communication network, wherein the method comprises at a station: sending to an access point station a frame comprising a buffer status report reporting an amount of buffered data to be transmitted; receiving, from the access point station, an allocation of a resource unit for the transmission of the buffered data; and transmitting the buffered data in the allocated resource unit; wherein the frame sent to the access point station further comprises a time indication representative of a time limit for the transmission of the buffered data by the station.

Abstract: A triggering frame in a wireless network grants a medium to an AP for a TXOP. The frame defines RUs and allocates Uplink RUs to UL transmissions for an UL duration and Direct Link RUs to P2P transmissions. All the P2P exchanges are nested within the UL duration, hence avoiding an acknowledgment frame in the DiL RUs to interfere with a block-ack frame of the AP after the UL transmissions. This is relevant for DiL RUs adjacent, in frequency, to the other defined RUs. The block-ack frame is duplicated over the DiL RUs. The RU immediately adjacent to the DiL RUs is declared, in the triggering frame, as being unused: no non-AP station is allowed to use it during the UL duration, or even the TXOP. Such empty RU may be declared only in case the DiL transmission requires a response frame from the destination P2P station.

Abstract: A network adopts Low Latency Reliable Service measures to ensure LLRS traffic has priority over not-LLRS traffic. Active measures are applied by stations exchanging LLRS traffic in the network. Passive measures are applied by stations not participating in the LLRS traffic exchange, to reduce use of the medium for exchange of not-LLRS traffic. The LLRS traffic is thus prioritized. The AP declares the LLRS requirements for the non-AP stations to join the BSS, such as the LL measures. A non-AP station wishing to join the BSS declares its LL capabilities to implement LL measures, during an association procedure. The AP decides whether to authorize or refuse the association based on the declared capabilities, thereby building a BSS with non-AP stations that are capable of applying passive LL measures when LLRS traffic is to be exchanged between stations. Achievement of low latency, PDR and jitter requirements is consequently eased.

Abstract: The present invention concerns a transmission system where DiL and MU UL scheme are triggered by the AP simultaneously. According to a first aspect of the invention, the data frame sent in DiL mode by a station in response to an AP triggering frame are emitted according to the synchronization scheme adopted in MU scheme. This means that pre-correction parameters are computed based on the triggering frame from the AP for the transmission of the data frame. According to a second aspect of the invention, the return frame from the destination station of a DiL transmission to the source station, typically an acknowledge frame, when present, is transmitted using pre-correction parameters computed by the destination of the DiL transmission. These pre-correction parameters may be computed based on the received data frame from the source station of the DiL transmission or, when available, based on a previous frame received from the AP.

Abstract: A method and device for decoding a plurality of packets of same data. Each packet is encoded using a product code. An encoded packet comprises data blocks is organized into rows and columns. Each of the rows and columns has a respective error detecting code. For a data packet, Erroneous row and column data are detected by their associated error detecting code. In the data packet, a potentially erroneous data block belonging to a row and a column of data blocks both having been detected as erroneous is detected. In another data packet of the same data, a non-erroneous data block corresponding to the identified potentially erroneous data block is determined. The data block is determined as non-erroneous if it belongs to at least one row or column of data having been detected as non-erroneous. The identified potentially erroneous block is replaced with the determined non-erroneous block.

Abstract: The invention relates to a method of reconstructing pixel values of a video frame for concealing corrupted pixel values. The method comprising receiving, by a receiving unit, of a signal from a communication channel and delivering by the receiving unit of video packets comprising pixel values possibly corrupted with errors; associating confidence levels with pixel values comprised in the video packets as delivered by the receiving unit; and reconstructing pixel values usable for display from the received pixel values, wherein a reconstructed value for a given pixel is obtained from the received values of a set of pixels, including the given pixel, weighted by their associated confidence levels. The invention allows for better reconstruction of corrupted pixel values and reduces the perceived distortion when displaying the video frame.

Abstract: A method and device for decoding a plurality of packets of same data. Each packet is encoded using a product code. An encoded packet comprises data blocks is organized into rows and columns. Each of the rows and columns has a respective error detecting code. For a data packet, Erroneous row and column data are detected by their associated error detecting code. In the data packet, a potentially erroneous data block belonging to a row and a column of data blocks both having been detected as erroneous is detected. In another data packet of the same data, a non-erroneous data block corresponding to the identified potentially erroneous data block is determined. The data block is determined as non-erroneous if it belongs to at least one row or column of data having been detected as non-erroneous. The identified potentially erroneous block is replaced with the determined non-erroneous block.

Abstract: A method for assessing reception quality of a common transmission by a set of receivers comprising deriving a reception quality for different combinations of the set, and assessing each against a threshold which varies according to the number of receivers in the respective combination. A single assessment of quality can be produced which takes into account multiple different receivers, and multiple different combinations of such receivers. Such assessment allows transmission power and/or the number of active receivers to be set according to a given reception criteria.

Abstract: The invention relates to a method of reconstructing pixel values of a video frame for concealing corrupted pixel values. The method comprising receiving, by a receiving unit, of a signal from a communication channel and delivering by the receiving unit of video packets comprising pixel values possibly corrupted with errors; associating confidence levels with pixel values comprised in the video packets as delivered by the receiving unit; and reconstructing pixel values usable for display from the received pixel values, wherein a reconstructed value for a given pixel is obtained from the received values of a set of pixels, including the given pixel, weighted by their associated confidence levels. The invention allows for better reconstruction of corrupted pixel values and reduces the perceived distortion when displaying the video frame.

Abstract: A method for assigning audio channels of audio data content to speakers, each of which is associated with a different one of N speaker nodes of a wireless network. The method is performed by a manager node of the wireless network. The method includes, for each of the N speaker nodes, obtaining a piece of orientation information for each of N?1 other speaker nodes different from the given speaker node, regarding an orientation of a reception antenna of the given speaker node when receiving data sent by each of the N?1 other speaker nodes through the wireless network. The method also includes assigning a different one of the audio channels to a different one of the speaker nodes, as a function of N?1 pieces of orientation information obtained for each of the N speaker nodes.

Abstract: In a mesh network using a TDMA protocol: determination is made of a first set of antenna angles to be used by a receiving antenna of a recipient node to capture data respectively sent by a plurality of sending nodes; reception is made of data sent by the sending nodes using the respective antenna angle of the first set; at least one correlation operation is made between the various redundant copies of the same item of data, received by the recipient node; at least one copy not necessary for the decoding of the received data is deduced determination is made of at least one time slot during which the copy not necessary for the decoding is received; and during that time slot, the antenna angle used by the receiving antenna to receive data sent by the sending node allocated to that time slot is updated.

Abstract: Antenna beam angles of one or more directional antennas of a wireless device are updated to communicate with a plurality of other wireless devices. Each one of the antenna beam angles is associated with one of the plurality of other wireless devices. At least one angle correction is determined to update the antenna beam angle associated with at least one first wireless device among the plurality of other wireless devices. The antenna beam angle associated with at least one second wireless device is first updated using the determined at least one angle correction of the antenna beam angle associated with the first wireless device.

Abstract: It is proposed a method for selecting an effective angle of reception of a directional antenna of a receiver node, the receiver node belonging to a wireless communications network comprising a plurality of emitter nodes. The method is implemented by the receiver node and comprises steps of: determining at least two possible angles of reception associated with a first emitter node, and for each of said at least two possible angles of reception, determining a difference between that angle and an angle of reception associated with a second emitter node different from said first emitter node, and selecting the effective angle of reception from among said at least two possible angles of reception associated with said first emitter node as a function of the determined differences.