A first node in a TSCH network may receive a message-initiation packet from a second node on the TSCH network. Based on information in the message-initiation packet, the first node may determine a transmission time for a message content packet that is associated with the message-initiation packet. The first node may generate or modify a node-specific transmission delay that indicates a backoff associated with the second node. The node-specific transmission delay may indicate a quantity of backoff time slots during which the first node delays initiating a transmission with the second node. If the first node receives, during the node-specific transmission delay, an additional packet intended for the second node, the first node may queue the additional packet until after the node-specific transmission delay is completed.

Embodiments of the present invention provide improved multi-link operation over for recovering from a transmission failure on a primary link. During synchronous transmission on the NSTR pair of links, a transmission failure of an MPDU may happen on either link of the NSTR pair of links. Error recovery can be performed when an AP MLD is operating on the NSTR pair of links. When a transmission failure is detected, error recovery can be performed, and the timing of a synchronous transmission on the other wireless link can be managed to advantageously avoid IDC interference and improve performance of the wireless network.

A communication device maintains a first backoff timer that corresponds to a first channel segment in a first radio frequency (RF) band, and maintains a second backoff timer that corresponds to a second channel segment in a second RF band. The first backoff timer is for determining when the communication device can transmit via the first channel segment, and the second backoff timer is for determining when the communication device can transmit via the second channel segment. In response to the first backoff timer expiring, the communication device waits to transmit via the first channel segment until the second backoff timer expires. After waiting to transmit via the first channel segment and in response to the second backoff timer expiring, the communication device transmits via the first channel segment beginning at a start time, and transmits via the second channel segment beginning at the start time.

A first node in a TSCH network may receive a message-initiation packet from a second node on the TSCH network. Based on information in the message-initiation packet, the first node may determine a transmission time for a message content packet that is associated with the message-initiation packet. The first node may generate or modify a node-specific transmission delay that indicates a backoff associated with the second node. The node-specific transmission delay may indicate a quantity of backoff time slots during which the first node delays initiating a transmission with the second node. If the first node receives, during the node-specific transmission delay, an additional packet intended for the second node, the first node may queue the additional packet until after the node-specific transmission delay is completed.

The invention provides a random access mechanism for short feedback procedure. An AP provides a random-access NFRP trigger frame defining a random access for the stations to a plurality of RU tone sets. A non-AP station randomly selects a responding RU tone set from the plurality of RU tone sets and send a NDP feedback report response on the selected responding RU tone set. A dedicated backoff counter may be used for the purposes of contention to the random RU tone sets. A subsequent UL MU transmission can then be scheduled by the AP for the NDP responding stations. No unused RU is expected, improving the random-access network efficiency. Also, the number of non-AP stations that can be targeted by the random-access NFRP trigger frame can be easily increased.

The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present invention discloses a method for applying backoff when using two-step random access.

A method of transmitting data of a V2X communication device is disclosed. The method of transmitting data of the V2X communication device includes measuring a plurality of specific values related to a channel state of a specific channel via a plurality of antenna ports, and each of the plurality of specific values may be measured via each of the plurality of antenna ports. Further, the V2X communication device may determine whether the specific channel is in an idle state based on the plurality of specific values, and, if the specific channel is in the idle state, simultaneously transmit service data to a plurality of adjacent devices via the specific channel using the plurality of antenna ports.

In a first embodiment, a method for determining a dynamic RACH response backoff indicator is disclosed, comprising: estimating a load on the PRACH, based on a number of preambles detected for each PRACH slot, noise floor level, and other Phy features; and using this as an input to perform dynamic backoff indicator selection. In a second embodiment, a method for determining dynamic RACH response backoff indicator is disclosed, comprising: determining, by using the information provided by the connected UEs, how much effort was required to connect with an eNB; and deciding, by a dynamic core allocation, if a zero backoff indicator can be used or a non-zero backoff indicator value is needed to be used.

Techniques discussed herein can facilitate inactive state transmissions for a User Equipment (UE) via a 4-step or 2-step inactive state RACH process. One example aspect is a UE device, comprising: communication circuitry; and a processor configured to perform operations comprising: in response to a determination to perform a Radio Resource Control (RRC) inactive data transmission: transmitting, via the communication circuitry, a message 1 (Msg1) or a message A (MsgA) preamble based on a Random Access Channel (RACH) configuration for the RRC inactive data transmission; transmitting, via the communication circuitry a message 3 (Msg3) or a MsgA Physical Uplink Shared Channel (PUSCH) comprising uplink (UL) data via configured resources; and receiving, via the communication circuitry, a message 4 (Msg4) or a message B (MsgB) in response to the Msg3 or the MsgA PUSCH.

Apparatuses, methods, and systems are disclosed for carrier determination. One apparatus includes a processor that determines a first carrier of multiple carriers for a first device to transmit control information. The apparatus also includes a transmitter that transmits, to the first device, a first physical control signal indicating the first carrier, wherein the first physical control signal further indicates an interlace index for transmitting control information. The apparatus includes a receiver that receives control information from the first device on the first carrier.