Methods and devices utilizing sidelink transmission between user equipment (UEs) for HARQ retransmission are provided. The sidelink HARQ retransmissions include data from the initial transmission or an outer coded version thereof. HARQ feedback from the targeted receiver of the initial transmission may identify code block groups and/or individual code blocks the target receiver did not successfully decode. A UE that has not successfully decoded an entire transport block, may still cooperate in HARQ retransmission for the targeted receiver of the transport block by retransmitting at least a subset of the code block groups that it was able to successfully decode for the transport block.

Methods and devices for propagating transactions in a network of nodes, each node having one or more connections to other nodes. The method includes receiving a plurality of incoming transactions over a time period; combining the plurality of incoming transactions using network coding to generate a composite message; sending the composite message to one or more nodes in the network; and determining an adjusted time period based on an equilibrium constant parameter and a count of transactions in the plurality of incoming transactions received over the time periodk.

Provided are a method for transmitting a signal by a terminal for vehicle-to-everything (V2X) communication in a wireless communication system, and a terminal using the method. The method comprises: performing first group transmission including first transmission and first retransmission; and performing second group transmission including second transmission and second retransmission, wherein the first group transmission and the second group transmission are performed to transmit data, and a resource reservation period for the first group transmission and the second group transmission is a half of a resource reservation period of another terminal which retransmits the data a maximum of only two times.

Embodiments of this application provide an encoding method and an apparatus for network encoding. A plurality of to-be-encoded data units are divided into a plurality of groups for separate encoding, and the quantity of to-be-encoded data units included in each group is less than the quantity of all to-be-encoded data units. According to the method, correlation of the encoded data is reduced, and a capability of the encoded data against channel fading and channel change is improved, to increase the receiving reliability of the encoded data.

The subject matter described herein is directed towards a technology that increases the reliability of transmitting information, by propagating received information in a location-controlled and route managed multiple-stage chain communication in a wireless communication system. A transmitting device transmits a broadcast or group-cast communication message in conjunction with transmitter and receiver location data (e.g., absolute or quantized coordinates). An intermediate device that receives the communication message determines a communication path based on the received location data, and determines whether the intermediate device is within the communication path based on its own location. Only intermediate devices that are within the communications path, and that otherwise satisfy retransmission policy, perform the retransmission. In one aspect, the communication path that is determined can be shaped based on one or more other factors, such as whether the communication message is highly reliable data traffic.

Methods, systems, and devices for wireless communications are described that allow for a first user equipment (UE) to forward a transmission from a second UE to a base station. The forwarding techniques may include the first UE performing a decoding procedure on a message received from the second UE via a sidelink communications link. Based on the results of the decoding procedure, the first UE may select an amplify and forward (AF), decode and forward (DF), or a combination thereof to forward the message from the second UE to the base station. The base station may receive the forward messages and, in some cases, a message directly from the second UE, and may determine decoding weights to use to jointly decode the two messages received at the base station.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine that one or more communications with a base station are to be transmitted or received via a relay UE. The one or more communications may include at least one of hybrid automatic repeat request feedback, a retransmission, or a control communication. The UE may transmit or receive the one or more communications via the relay UE. Numerous other aspects are provided.

A host controller for a distributed wireless local area network (WLAN) includes: a communications interface connected to each of a set of wireless access points (APs); a memory storing (i) identifiers of each of the wireless access points, and (ii) a master identifier of the host controller; and a processor configured to: receive a notification, from a first one of the APs, that the first AP has completed an association with a client device; in response to receiving the notification: deploy association data, including an identifier of the client device, to each of the APs; initiate a handshake mechanism with the client device, via a selected one of the APs, to generate an encryption key; and provide the encryption key to each or the APs to enable data exchange between the client device and each of the APs.

System and method embodiments are provided for enabling flexible and reliable UE-to-UE based relay. The embodiments include using fountain codes for combining signals at a suitable network layer higher than a media access control (MAC) sub-layer and using a MAC sub-layer hybrid automatic repeat request (HARQ) transmission scheme. When a relay UE in a UE group for joint reception receives, from a network access point, a data packet intended for a destination UE in the UE group and including fountain code at the higher network layer, the relay UE sends the data packet to the destination UE and returns a HARQ ACK message at the MAC sub-layer to the access point. The destination UE then receives and decodes the data packet. Subsequently, upon receiving the entire data, the destination UE sends an ACK message at the higher network layer to the access point.

A host controller for a distributed wireless local area network (WLAN) includes: a communications interface connected to each of a set of wireless access points (APs); a memory storing (i) identifiers of each of the wireless access points, and (ii) a master identifier of the host controller; and a processor configured to: receive a notification, from a first one of the APs, that the first AP has completed an association with a client device; in response to receiving the notification: deploy association data, including an identifier of the client device, to each of the APs; initiate a handshake mechanism with the client device, via a selected one of the APs, to generate an encryption key; and provide the encryption key to each or the APs to enable data exchange between the client device and each of the APs.