Method for controlling channel mapping and method and device for controlling channel detection

Abstract

The embodiment of the invention relates to a method for controlling channel mapping and a method and a device for controlling channel detection. The method for controlling the channel mapping comprises the following steps of: determining a corresponding search space for at least two control channels with the same signaling length according to the signaling length of the control channels corresponding to member carriers based on the same aggregation level, wherein the at least two control channels with the same signaling length use the same search space; mapping the at least two control channels with the same signaling length to the determined corresponding search space; and / or, determining corresponding search spaces for at least two control channels with different signaling lengths respectively, wherein the at least two control channels with different signaling lengths use different search spaces in at least one time transmission unit; and mapping the at least two control channels with different signaling lengths to the determined corresponding search spaces respectively. Through the embodiment of the invention, not only the conflict of the control channels can be reduced, but also the blind detection times of the control channels can be reduced.

Description

technical field [0001] The present invention relates to the field of communication technologies, in particular to a control channel mapping method, a control channel detection method and a device. Background technique [0002] In the 3GPP Evolved Universal Terrestrial Radio Access (E-UTRA for short) communication system, the transmission of the physical data channel of the user equipment (User Equipment, UE for short) needs to be notified through the scheduling assignment command of the system UE. These scheduling assignment instructions are usually carried by a Physical Downlink Control Channel (Physical Downlink ControlChannel, PDCCH for short), where the scheduling assignment instruction is, for example, a downlink scheduling corresponding to a Physical Downlink Shared Channel (Physical Downlink Shared Channel, PDSCH for short). A grant (DL_grant) and an uplink scheduling grant (UL_grant) corresponding to a physical uplink shared channel (Physical Uplink Share Channel, P...

AI Technical Summary

Problems solved by technology

[0005] For a UE, when the PDCCHs corresponding to multiple component carriers are transmitted on one component carrier or a few component carriers, the probability of collision between the control channels is very high due to the limited search space corresponding to the control channels. If the value is large, it may cause some PDCCHs of the UE to be unscheduled, resulting in the inability to transmit some data of the UE, reducing the throughput of the UE.

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