Method for determining reference signal pattern

Abstract

The invention provides a method for semi-statically determining a reference signal (RS) pattern which is used by a sector, particularly a method for determining the RS pattern. A base station provides a Cell identifier (ID) of the sector and a pattern parameter (V) for user equipment in the sector which belongs to the base station, and the user equipment determines the RS pattern which is used by the sector according to the pattern parameter and the Cell identifier of the sector. The Cell identifier of the sector is not changed and the pattern parameter can be flexibly set by the base station, so that the semi-static requirement in the current 3rd generation partnership project (3GPP) draft can be met. Preferably, the sample parameter is accommodated in bit of a physical broadcast channel, and the user equipment determines the RS pattern before demodulating a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH), so time and power are saved. Under the condition that various types of patterns exist, patterns which are used actually are selected by a blind detection mode. The base station provides a system frame number (SFN) for the user equipment, and determines a sequence parameter of RS together with the Cell identifier of the sector.

Description

technical field [0001] The invention relates to a wireless communication technology, in particular to a reference signal in the wireless communication. Background technique [0002] Reference Signal (Reference Signal, referred to as RS) is widely used in wireless communication technologies. For example, a base station sends a reference signal on a certain communication resource element, and a user equipment receives the reference signal sent by the base station on the same communication resource element, thereby Various communication parameters such as downlink channel quality and downlink channel state from the base station to the user equipment are measured according to the received reference signal. [0003] In order to prevent the reference signals sent by the base station in each sector and cell from interfering with each other, the reference signal is generally sent according to one of a variety of patterns, and the base station selects non-interfering and orthogonal p...

AI Technical Summary

Problems solved by technology

Not only that, because the user equipment needs to go through multiple steps such as accessing the synchronization channel, accessing the physical broadcast channel (PBCH), accessing the physical downlink control channel (PDCCH) and finally accessing the physical downlink shared channel (PDSCH) when receiving RRC signaling. , so the user equipment has a certain time overhead and power consumption when receiving RRC signaling

When there are multiple sectors / multiple component carriers in a sector, the user equipment must repeat the above steps for each sector and each component carrier, then the time overhead and power consumption of the user equipment will be large

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