Techniques for transmitting a control channel and a data channel over multiple component carriers

#The present disclosure, for example, relates to wireless communication systems, and more particularly to techniques for transmitting a control channel and a data channel over one or more component carriers in wireless communications.

#Wireless communication networks are widely deployed to provide various communication services such as voice, video, packet data, messaging, broadcast, etc. These wireless networks may be multiple-access networks capable of supporting multiple users by sharing the available network resources. Examples of such multiple-access networks include Code Division Multiple Access (CDMA) networks, Time Division Multiple Access (TDMA) networks, Frequency Division Multiple Access (FDMA) networks, Orthogonal FDMA (OFDMA) networks, and Single-Carrier FDMA (SC-FDMA) networks.

#A wireless communication network may include a number of base stations (e.g., eNodeBs) that can support communication for a number of user equipments (UEs). A UE may communicate with a base station via the downlink and uplink. The downlink (or forward link) refers to the communication link from the base station to the UE, and the uplink (or reverse link) refers to the communication link from the UE to the base station.

#In order to facilitate a fuller understanding of the present disclosure, reference is now made to the accompanying drawings, in which like elements are referenced with like numerals. These drawings should not be construed as limiting the present disclosure, but are intended to be illustrative only.

#FIG. 1 is a block diagram conceptually illustrating an example of a wireless communications system, in accordance with various aspects of the present disclosure.

#FIG. 2 is a block diagram conceptually illustrating examples of an eNodeB and a user equipment (UE) configured in accordance with various aspects of the present disclosure.

#The detailed description set forth below, in connection with the appended drawings, is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein may be practiced. The detailed description includes specific details for the purpose of providing a thorough understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts may be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form in order to avoid obscuring such concepts.

#Various techniques including methods, apparatuses, devices, and systems are described for communicating control and data channels over one or more component carriers (CC). In some aspects, a wireless device (e.g., user equipment (UE)) can communicate with one or more cells over a plurality of CCs, where the CCs may be configured with at least one network entity (e.g., evolved Node B (eNodeB)) in carrier aggregation (CA) and/or with multiple network entities in multiple connectivity. In multiple connectivity, it is to be appreciated that the UE may be configured with multiple carriers in CA with one or more of the multiple cells using one or more communication links to the one or more cells. In some aspects, in multiple connectivity, a wireless device may receive first configuration information to communicate with a first primary cell (e.g., a master cell group (MCG)/primary cell group (PCG) primary cell or PCell) of a first network entity over a first communication link. The wireless device may also receive second configuration information to communicate with a second primary cell (e.g., a secondary cell group (SCG) primary cell or PCellSCG) of a second network entity over a second communication link. In the case of multiple connectivity, the PCells may be configured by different eNodeBs (e.g., a master eNodeB or MeNodeB that provides the PCell, and a secondary eNodeB or SeNodeB that provides the PCellSCG).

#In addition, the wireless device may be generally configured to perform parallel transmissions over a control channel and a data channel, but may not be able to support this functionality over a specific CC due to limitations related to the configuration of the CC. Accordingly, where the wireless device is configured with a CC for which it is unable to support parallel transmissions of the control and data channel, the wireless device may disable such parallel transmissions altogether. In another example, the wireless device may continue to support parallel transmission of the control and data channel, but may restrict transmissions over the CC that is unable to support the parallel transmissions by transmitting one of the control channel or data channel in a given period of time. It is to be appreciated, in this example, that parallel transmission of the control and data channel can still be supported by transmitting one of the control channel or data channel over the CC, and transmitting the other of the control or data channel over another CC. In yet another example, if the network entity configuring the carriers is aware of the UE's in ability to support parallel transmission over a given CC, the network entity can avoid scheduling the CC as a CC over which control channel and data channel transmissions are supported (e.g., a primary CC in CA or multiple connectivity).