Claims:1. One or more non-transitory, computer-readable media (NTCRM) having instructions that, when ?executed, cause a device to:?
perform a listen-before-talk procedure for a New Radio – Unlicensed (NR-U) operation in a wideband with transport block (TB)-based transmissions or code-block group (CBG)-based transmissions configured; and
transmit a burst within a first phase and a second phase, wherein the burst is rate-matched in the second phase over a portion of the wideband in which the LBT procedure was successful.
, Description:Field
[0003] Embodiments of the present disclosure generally relate to the field of wireless communication, and more particularly, to apparatuses, systems, and methods for contention window size adjustment in wireless networks.

Background
[0004] Each year, the number of mobile devices connected to wireless networks significantly increases. In order to keep up with the demand in mobile data traffic, changes have to be made to system ?requirements to be able to meet these demands. Three critical areas that need to be enhanced in ?order to deliver this increase in traffic are larger bandwidth, lower latency, and higher data rates.?
[0005] One of the major limiting factors in wireless innovation is the availability in spectrum. To ?mitigate this, the unlicensed spectrum has been an area of interest to expand the availability of cellular communications. ?In this context, one of the major enhancements for Long Term Evolution (LTE) in Third Generation Partnership Project (3GPP) Release 13 has been to enable its ?operation in the unlicensed spectrum via Licensed-Assisted Access (LAA), which expands the system ?bandwidth by utilizing the flexible carrier aggregation (CA) framework introduced by the LTE-?Advanced (LTE-A) system.
[0006] In Release 13 LTE, multi-carrier operation was introduced for downlink (DL), and two ?alternative solutions ?were introduced to cope with multi-carrier listen before talk (LBT): type A and type B ?operation.? In Type A operation, the eNB performs Cat-4 LBT on each carrier. Cat-4 LBT may be performed for data transmissions. In order to ?align the transmissions ?across carriers, the eNB performs a self-deferral. For this type of ?operation, the eNB may perform Type A1 or Type A2. In Type A1, the eNB may maintain a ?contention window size (CWS) counter and perform CWS adjustment independently ?for each carrier. In this case, if ?the eNB ceases transmission over one carrier, ?it may resume to decrease the counter for ?all other carriers if the channel is idle for ??4 clear channel assessments (CCA) or after ?reinitializing the value of the counter.? In Type A2, the eNB may maintain a common CWS ?counter and perform a common CWS ?adjustment for all the carriers. The CWS adjustment ?may be done by associating the ?highest CWS value across carriers to all carriers. In this ?case, if the eNB ceases ?transmission over one carrier, then the eNB may reinitialize the ?counter for all the carriers.?
[0007] In Type B operation, the eNB selects a single carrier by either uniformly picking in a ?random fashion one carrier across all carriers or by configuring a specific carrier to ?operate as a so called “primary ?channel.” A primary channel cannot be changed more than ?once every second. The eNB can perform ?sensing over the other carriers by applying a ?Cat-2 LBT only if the eNB completes the Cat-4 LBT for ?the primary channel. For this type ?of operation, the eNB may perform Type B1 or Type B2. In Type B1 operation, the eNB ?may ? maintain a CWS counter and perform CWS adjustment independently ?for each ?carrier. In this case the single carrier mechanism is used with the ?distinction that a CWS is ?increased if NACK is determined in all carriers ?within the reference subframe.? In Type B2 ?operation, the eNB may maintain a common CWS counter and perform a common CWS ??adjustment for all the carrier. ?

Brief Description of the Drawings
[0008] Embodiments will be readily understood by the following detailed description in ?conjunction with the accompanying drawings. To facilitate this description, like reference ?numerals designate like structural elements. Embodiments are illustrated by way of ?example and not by way of limitation in the figures of the accompanying drawings.?
[0009] Figure 1 illustrates a network in accordance with some embodiments.
[00010] Figure 2 illustrates operation of a device in accordance with some embodiments.
[00011] Figure 3 illustrates options for starting a reference burst in accordance with some embodiments.
[00012] Figure 4 illustrates various ways of mapping transport blocks or code-block groups to resources in accordance with some embodiments.
[00013] Figure 5 illustrates a random access channel procedure in accordance with some embodiments.
[00014] Figure 6 illustrates a transmission in accordance with some embodiments.
[00015] Figure 7 illustrates an example operation flow/algorithmic structure in accordance with some embodiments.
[00016] Figure 8 illustrates an example operation flow/algorithmic structure in accordance with some embodiments.
[00017] Figure 9 illustrates an example operation flow/algorithmic structure in accordance with some embodiments.
[00018] Figure 10 illustrates baseband circuitry in accordance with some embodiments.
[00019] Figure 11 illustrates components of an electronic device in accordance with some embodiments.

Detailed Description
[00020] In the following detailed description, reference is made to the accompanying drawings, ?which form a part hereof wherein like numerals designate like parts throughout, and in which is ?shown by way of illustration embodiments that may be practiced. It is to be understood that ?other embodiments may be utilized and structural or logical changes may be made without ?departing from the scope of the present disclosure.