Methods, systems, and devices for wireless communication are described. A network access device may select a search space configuration for transmission of group(s) of one or more control channel elements (CCEs) to convey a downlink control information (DCI) message. The search space configuration may include a cross-coreset configuration, such as a cross-control channel subband configuration, a cross-symbol configuration, and/or a cross-beam configuration. The network access device may transmit the DCI message according to the selected search space configuration. A user equipment (UE) may monitor, based on the search space configuration, the group(s) of one or more CCEs to detect DCI messages. The UE may detect a DCI message for it and decode the DCI message based on the monitoring. Numerous other aspects are provided.

Search space design and use

A communication method and a terminal and a base station adapted to the method are provided. The communication method of a terminal includes: receiving a message containing information regarding a semi-persistent scheduling (SRS) configuration from a base station; determining whether a sub-frame configured with a non-adaptive re-transmission is identical to a sub-frame configured with an uplink grant according to the SPS configuration; and when: a sub-frame configured with a non-adaptive re-transmission is identical to a sub-frame configured with an uplink grant according to the SPS configuration; and the terminal does not have data to be first transmitted via the sub-frame configured with an uplink grant according to the SPS configuration, performing the non-adaptive re-transmission.

Terminal and communication method of the same

The invention provides a resource scheduling method and a resource scheduling device for vehicle communication, wherein the resource scheduling method comprises the following steps of: detecting whether message characteristics of a vehicle communication service are changed or not in a process of transmitting a vehicle communication message based on a configuration parameter for performing semi-static scheduling distributed by a base station; if detecting that the message characteristics of the vehicle communication service are changed, sending the changed message characteristics of the vehicle communication service to the base station through indication signalling; receiving a configuration parameter for performing semi-static scheduling redistributed by the base station according to the changed message characteristics; and continuously transmitting the vehicle communication message based on the re-distributed configuration parameter for performing semi-static scheduling. According to the resource scheduling method and the resource scheduling device for vehicle communication provided by the invention, when the message characteristics of the vehicle communication service carried by a vehicle communication terminal are changed, the base station can know the change in time; therefore, the base station can redistribute a configuration parameter of a SPS to the vehicle communication terminal; and thus, the configuration parameter of the SPS can be suitable for dynamic change of the vehicle communication message in time.

Resource scheduling method and resource scheduling device for vehicle communication

The invention discloses a TCP ACK message processing method and device. The method comprises the steps that after a current application layer data packet is determined to be a transmission control protocol TCP response ACK message, a data flow to which the current ACK message belongs is acquired; and when the data rate of the ACK message meets the preset threshold value in the preset statistical period, merging/distribution processing is performed on the current ACK message according to the data flow to which the current ACK message belongs and a preset merging/distribution processing strategy.

TCP ACK message processing method and device

This application provides a downlink control information (DCI) obtaining method and apparatus. The method includes: determining, by a terminal, predefined search space based on aggregation levels supported by the terminal, where the predefined search space includes search space corresponding to at least one of an aggregation level 16 and an aggregation level 24; and performing, blind detection to obtain the DCI. Alternatively, the method includes: determining, by a terminal, blind detection search space of the terminal from predefined search space based on a quantity of resource blocks (RBs) occupied by an enhanced physical downlink control channel (EPDCCH) and aggregation levels supported by the terminal, where the predefined search space includes corresponding search space obtained when the RB quantity is 16; and performing, blind detection to obtain the DCI. According to this application, a downlink coverage gain can be increased, and diversity of implementations of downlink coverage enhancement can be improved.

Downlink control information processing method and apparatus

The invention discloses an uplink ACK/NACK bundling transmission method. The method comprises steps: A, the terminal determines downlink sub frames demodulated continuously and correctly in a feedback window and feeds ACK/NACK information back in the corresponding uplink resources according to continuity of a value descried in the specification indicated by the downlink control information (DCI) formats 1/1A/1B/1D/2/2A/2B and semi-static scheduling configuration information; and B, the base station detects the ACK/NACK information fed back by the terminal, judges the downlink sub frames demodulated continuously and correctly by the terminal and carries out new transmission on other downlink data assignment besides the downlink sub frames demodulated continuously and correctly in the feedback window. The invention also discloses a terminal and a base station. When the technical scheme of the invention is applied, the data transmission efficiency is improved, and accuracy of judging missing of sub frames, incorrect sub frame demodulation and correct sub frame demodulation can be improved.

Uplink ACK/NACK bundling transmission method, terminal and base station

The invention discloses a physical downlink control channel (PDCCH) resource allocation method and a device. The method comprises steps: relative positions of UE (User Equipment) in at least two adjacent cells are judged; as for every piece of UE, a CCE (Control Channel Element) aggregation level of the PDCCH of the UE is determined, and according to the CCE aggregation level of the PDCCH of the UE, special UE search space in the PDCCH of each subframe is calculated; when at least two pieces of UE are judged to be located in an overlapped covering region of the adjacent cells and the at least two pieces of UE belong to adjacent different cells, as for each piece of UE in the at least two pieces of UE, according to the CCE aggregation level of the PDCCH of the current UE, a group of CCEs which do not overlap with CCEs in PDCCHs of other pieces of UE in the at least two pieces of UE in the frequency domain position are selected and allocated from the special UE search space in the PDCCH of each subframe, and the group of CCE is allocated to the PDCCH of the current UE. The method and the device of the invention realize improvement of transmission reliability of the PDCCH.

Physical downlink control channel (PDCCH) resource allocation method and device

The present application discloses a method and a device of resource allocation in Physical Downlink Control Channels (PDCCHs). The present application successfully improves the reliability of the transmission in PDCCH.

Method and device of resource allocation in physical downlink control channels

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Uplink ACK/NACK bundling transmission method, terminal and base station

Physical downlink control channel (PDCCH) resource allocation method and device

Method and device of resource allocation in physical downlink control channels