PDCCH (packet data control channel) signaling transmitting and receiving method, base station, UE (user's equipment) and system

Abstract

The invention provides a PDCCH (Packet Dedicated Control Channel) signaling sending and receiving method, a base station, UE (User Equipment) and a system, wherein the sending method comprises the steps: the base station determines positions of first searching space and second searching space; if the first searching space does not include length of a PDCCH signaling of a CIF (Carrier Indicator Field) and the first searching space and the second searching space have a physical overlapping region, the base station only sends the PDCCH signaling which does not include the CIF to the UE in the physical overlapping region. According to the method, the base station, the UE and the system provided by the embodiment of the invention, the fuzzy scheduling of the base station can be avoided, thus the problem of analysis error of the UE can be avoided.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to a physical downlink control channel (Physical Downlink Control Channel, PDCCH for short) signaling sending and receiving method, base station, user equipment (User Equipment, UE for short) and system. Background technique [0002] In the evolved LTE system (LTE-Advanced, referred to as LTE-A), the carrier aggregation (Carrier Aggregation, referred to as CA) technology is introduced, that is, the resources of multiple component carriers (Component Carrier, referred to as CC) are simultaneously scheduled to a user equipment (User Equipment, referred to as UE) to meet higher peak rates and business needs. [0003] In a system that does not adopt the CA technology, one Physical Downlink Control Channel (PDCCH for short) signaling can only schedule resources of one carrier. In a system using the CA technology, if a UE aggregates multiple carriers t...

AI Technical Summary

Problems solved by technology

However, after the base station sends the semi-static RRC signaling, it needs to receive the RRC Connection Reconfiguration Complete signaling (RRC Connection Reconfiguration Complete) fed back by the UE to determine that the UE has correctly received the semi-static RRC signaling. During the period from the static RRC signaling to the base station receiving the RRC connection reconfiguration completion signaling fed back by the UE, the base station has the problem of ambiguous scheduling

[0006] The following problems exist in the prior art: during the period from when the base station sends the semi-static RRC signaling to when the base station receives the RRC connection reconfiguration completion signaling fed back by the UE, the base station has the problem of ambiguous scheduling, which leads to UE parsing wrong question

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