Abstract:
A method comprises composing, by a wireless device in a wireless network, a service ID indicating support for providing proxy service discovery for other wireless devices operating in the wireless network; and transmitting, by the wireless device, a wireless service discovery frame to the wireless network, the service discovery frame including the composed service ID.
Abstract:
A method, apparatus and computer program product are provided to facilitate the transition of user equipment between basic service sets within a WLAN or from a basic service set within a WLAN to a cellular data link of a cellular network. In the context of a method from the perspective of the user equipment, a message is received that identifies one or more basic service sets or cellular data links to which user equipment is potentially capable of transferring. For each basic set or cellular data link, the method includes determining from the message whether the respective basic service set or cellular data link is a candidate to permit an internet protocol (IP) address of the user equipment to be preserved following the transfer. The method includes an indication associated with each respective basic service set or cellular data link to identify whether the IP address of the user equipment is able to be preserved following the transfer thereto.
Abstract:
A method to manage of coexistence between infrastructure networks and peer-to-peer groups, including receiving, by a peer-to-peer wireless client device associated with a peer-to-peer wireless group owner device in a peer-to-peer wireless network, channel usage information of a wireless infrastructure network, from a wireless access point device managing the wireless infrastructure network; and transmitting, by the peer-to-peer wireless client device, the received channel usage information of the wireless infrastructure network, to the peer-to-peer wireless group owner device, as coexistence information.
Abstract:
A method, apparatus, and computer program for routing messages between terminal devices of a wireless network are provided. A terminal device of the wireless network generates a signaling message to be transmitted as a broadcast or multicast message to at least one other terminal device of the wireless network, causes transmission of the signaling message as a unicast message to the access node and, after transmitting the unicast message to the access node, receives the signaling message from the access node as the broadcast or multicast message. Further explanations: terminal devices (of a WLAN) broadcast or multicast control messages between each other by employing the access node (AP) as a broker for the signaling messages. For instance, channel reservation messages are encapsulated as unicast messages and sent to an AP to broadcast such reservation messages to other terminals competing for the same channel access. Each terminal adapts its channel reservations based on the information broadcasted by the other terminals via the AP. Alternatively, terminal devices may exchange information about the services they support.
Abstract:
A block-acknowledgement mechanism employing first and second variable-length bitmaps. The first bitmap carries a plurality of one-bit flags that enable omission, from the second bitmap, of entire segments of acknowledgement-status bits corresponding to the same acknowledgment status, e.g., received or not received. The value of a dedicated control bit in the BA-information field determines the interpretation of binary “0s” and “1s” of the second bitmap in terms of the acknowledgement status. Different embodiments are compatible with fragmented and non-fragmented transmission of the corresponding data units. At least some embodiments are beneficially capable of producing shorter BA frames than comparable prior-art solutions under at least some wireless-channel conditions.
Abstract:
Method for channel contention and data frame transmission in a wireless network. Said method for an apparatus of a first wireless network comprises: operating the apparatus on at least a first channel and a second channel of the first wireless network; while performing said operating in a first operating mode to transmit a first data frame to a receiver apparatus of the first wireless network, contending (202) simultaneously on both the first channel and the second channel and transmitting (206, 208) the first data frame on the one of the first channel and second channel where said contending is first successful; switching from the first operating mode to a second operating mode; while operating in the second operating mode to transmit a second data frame to the receiver apparatus, contending (212) simultaneously on both the first channel and the second channel and transmitting (216, 218, 220) the second data frame to the receiver apparatus according to the following conditions: in response to successful contention on the first channel before successful contention on the second channel, transmitting the second data frame to the receiver apparatus on the first channel; and in response to successful contention on the second channel before successful contention on the first channel, transmitting the second data frame on the second channel if the contention becomes successful also on the first channel or if the first channel is reserved to an apparatus of a second wireless network different from the first wireless network while the second data frame is transmitted.
Abstract:
Disclosed is a method comprising measuring a first power value in a first channel before transmitting a first signal in a second channel A first transmit power value is then determined for transmitting the first signal in the second channel. In addition, a second power value in the first channel is estimated, while transmitting the first signal in the second channel, wherein the second power value is estimated based on at least the measured first power value and the first transmit power value. Further, a third power value is measured in the first channel, while transmitting the first signal in the second channel.
Abstract:
According to an example aspect of the present invention, there is provided a method, comprising: occupying a first channel for data transmission between a first multi-link device (MLD) and a second MLD for a first channel occupation period (COP), transmitting a measurement request to a subset of MLDs to perform channel measurements on at least two channels during the first COP, transmitting at least one data message to the second MLD during the first COP, receiving, after transmission of the at least one data message, at least one channel status report comprising channel status information from at least one MLD of the subset of MLDs during the first COP, and selecting a channel, among the at least two channels, for data transmission between the first MLD and an MLD for a second COP, wherein the selection is based at least partly on the channel status report.
Abstract:
This document discloses a solution for sharing a transmission opportunity in a wireless network. According to an aspect, a method for an apparatus of a first wireless network: includes determining a plurality of devices of a second wireless network for null steering; transmitting a trigger frame, the trigger frame indicating a transmission period for data frame transfer between the apparatus and another apparatus of the first wireless network, a spatial reuse opportunity for the second wireless network during the transmission period, and an additional period preceding the transmission period; receiving, from at least one device of the second wireless network during the additional period, a channel state frame; and performing, based on the channel state frame, null steering towards the at least one device during the transmission period.
Abstract:
This document discloses a solution for enabling spatial cooperation in a hidden node scenario. According to an aspect, a method comprises: detecting, by a station of a first wireless network managed by a first access node, that a second access node of a second wireless network is hidden to the first access node; in response to the detecting, transmitting by the station a spatial cooperation request message to the second access node; receiving, by the station from the second access node as a response to the spatial cooperation request message, a spatial cooperation response message comprising at least one information element acknowledging spatial cooperation; after receiving the spatial cooperation response message, receiving by the station a frame from the first access node while the second access node is transmitting another frame and while null steering is performed between the apparatus and the second access node.