This application provides a communication method, including: receiving, by a terminal device, configuration information, where the configuration information is used to configure M component carriers, and M is a positive integer; determining, by the terminal device, N types of DCI sizes based on the configuration information; and if N is greater than a first threshold, determining, by the terminal device, Q types of DCI sizes, and detecting a downlink control channel in a first time unit based on the Q types of DCI sizes, where Q is less than or equal to the first threshold. According to the communication method provided in this application, a capability of detecting a DCI size by a terminal device can be fully used.

A transmit end sends a physical layer protocol data unit (PPDU) to a receive end, where a bandwidth of the PPDU is P10 MHz. The PPDU includes a first part of fields and a second part of fields. A quantity of tones per 10-MHz tone distribution corresponding to the first part of fields is 64, and a tone spacing is 156.25 kHz. A quantity of tones per 10-MHz tone distribution corresponding to the second part of fields is 128, and a tone spacing is 78.125 kHz. The corresponding method is applicable to 10 MHz, 20 MHz, 40 MHz, 60 MHz, so that a transmission bandwidth is increased compared with that of 802.11p, as well as a system throughput. The transmit end may transmit data by some RUs to increase a data transmission distance, or may simultaneously transmit data of different services by a plurality of RUs to improve data transmission efficiency.

Various embodiments disclosed herein provide for facilitating updating a slot format used for establishing a radio sidelink. According an embodiment, a system can receive a slot format over a sidelink, wherein the slot format comprises a first release parameter and a transmit period. The system can further facilitate determining whether the first release parameter matches a second release parameter stored in the memory. The system can further facilitate, in response to the determining indicating that the first release parameter matched the second release parameter, updating a resource map used to transmit data, resulting in an updated resource map. The system can further facilitate transmitting the slot format based on the transmit period.

In some implementations, a device may partition a coverage area associated with a network to form one or more geographic sectors, and may determine a pathloss value for each frequency band of multiple frequency bands and a spatial distribution between cells, within the geographic sector, for each frequency band. The device may determine a degree of contiguous coverage for each frequency band within the geographic sector based on the pathloss value and the spatial distribution between cells for that frequency band, and may determine, based on the degree of contiguous coverage for each frequency band, a specific frequency band, of the multiple frequency bands, to be used as a primary carrier for carrier aggregation in the geographic sector. The device may output information that identifies a carrier aggregation profile that indicates the specific frequency band to be used as the primary carrier for carrier aggregation in the geographic sector.

A method for a wireless device operating in a wireless communication system includes receiving configuration information for configuring a non-Physical Uplink Control Channel (PUCCH) cell; and transmitting a Hybrid Automatic Repeat request (HARQ) feedback of the non-PUCCH cell on a special cell (SpCell) or a PUCCH cell other than SpCell, according to indication information. Further, when the indication information is not received with the configuration information, the HARQ feedback is transmitted on the SpCell, and when the indication information is received with the configuration information, the HARQ feedback is transmitted on the PUCCH cell.

A method for a wireless device operating in a wireless communication system includes receiving configuration information for configuring a non-Physical Uplink Control Channel (PUCCH) cell; and transmitting a Hybrid Automatic Repeat request (HARQ) feedback of the non-PUCCH cell on a special cell (SpCell) or a PUCCH cell other than SpCell, according to indication information. Further, when the indication information is not received with the configuration information, the HARQ feedback is transmitted on the SpCell, and when the indication information is received with the configuration information, the HARQ feedback is transmitted on the PUCCH cell.

Even when the lengths of data items to be transmitted to users are not the same, the frames multiplexed at the same time finally have the same frame length and are transmitted. Even when the lengths of frames for the users are not the same at the time when a transmission request is received from a higher layer, a communication apparatus reconfigures at least two of the frames having short lengths into a frame having a long length through Aggregation so that the frames finally have the same frame length and transmits the frames at the same time in a multiplexed manner. On the transmitter side, the transmission power used per destination communication station can be increased due to a decrease in the total number of multiplexed frames. On the receiver side, an unstable AGC operation can be prevented.

A method of determining a performance metric for a selection of a first user and a second user among a set of candidate users for attribution to a sub-band in a multiple access communications system based on Non-Orthogonal Multiple Access (NOMA), is provided wherein the first user (k.sub.1) and the second user (k.sub.2) are selected as the pair of candidate users corresponding to an extremum of the ratio between a first term reflecting the total throughput achievable by any pair of the candidate users assigned to the sub-band (s) under consideration, and a second term reflecting the known throughput achieved by that same pair of candidate users over a predetermined preceding period. Implementations include a method of determining a performance metric is presented for attributing users to one or more of a plurality of sub-bands in a multiple access communications system, wherein in an initial assignment phase for a specific sub-band, a first user is selected for that band on the basis of one or more criteria such as user priority. Then a second sub-band user maximizing or minimizing the performance metric.

In some implementations, a device may partition a coverage area associated with a network to form one or more geographic sectors, and may determine a pathloss value for each frequency band of multiple frequency bands and a spatial distribution between cells, within the geographic sector, for each frequency band. The device may determine a degree of contiguous coverage for each frequency band within the geographic sector based on the pathloss value and the spatial distribution between cells for that frequency band, and may determine, based on the degree of contiguous coverage for each frequency band, a specific frequency band, of the multiple frequency bands, to be used as a primary carrier for carrier aggregation in the geographic sector. The device may output information that identifies a carrier aggregation profile that indicates the specific frequency band to be used as the primary carrier for carrier aggregation in the geographic sector.

Various embodiments disclosed herein provide for facilitating updating of slot format used for establishing the new radio sidelink. According an embodiment, a system can receiving a slot format over a sidelink, wherein the slot format comprises a first release parameter and a transmit period. The system can further facilitate determining whether the first release parameter matches a second release parameter stored in the memory. The system can further facilitate, in response to the determining indicating that the first release parameter matched the second release parameter, updating a resource map used to transmit data, resulting in an updated resource map. The system can further facilitate transmitting the slot format based on the transmit period.