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Method and equipment for determining search space of PDCCH CC

A technology of searching space and determining method, applied in the field of communication, can solve the problems of blind detection, electricity consumption, etc., and achieve the effect of reducing the number of blind detections

Active Publication Date: 2014-05-14
XIAOMI INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a PDSCH CC is deactivated without processing the search space of the corresponding PDCCH CC, it will inevitably lead to unnecessary blind detection and unnecessary power consumption

Method used

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  • Method and equipment for determining search space of PDCCH CC
  • Method and equipment for determining search space of PDCCH CC
  • Method and equipment for determining search space of PDCCH CC

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solution of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0038] In a multi-carrier system, in order to increase the peak rate, the UE can work on multiple component carriers. The multi-carrier system will configure a set of working carriers for the UE according to the sum of the average rate of the service requested by the UE, and because the service of the UE may have Fluctuation and suddenness, when the UE traffic is relatively small, in order to better save power, the carrier in the working carrier set configured for the UE can be furth...

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Abstract

A method and device for determining search spaces on a Physical Downlink Control Channel Component Carrier (PDCCH CC) are disclosed in the embodiments of the present invention. The method comprises the following steps: a user equipment obtains the activity state of a Physical Downlink Shared Channel Component Carrier (PDSCH CC), and according to the activity state of the PDSCH CC, determines the search spaces on the PDCCH CC. In the embodiments of the present invention, determining the search spaces on a PDCCH CC according to the activity state of a PDSCH CC, the search spaces can be adjusted in time, thus reducing unnecessary PDCCH blind decoding and saving power more effectively.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and equipment for determining a PDCCH CC search space. Background technique [0002] LTE (Long Term Evolution, long-term evolution) is the evolution of 3G (3rd Generation, third-generation digital communication), LTE improves and enhances 3G air access technology, adopts OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) ) and MIMO (Multiple Input Multiple Output, Multiple Input Multiple Output) as standards for the evolution of the LTE wireless network. Among them, in the LTE system and the previous wireless communication system, there is only one carrier in a cell, such as figure 1 As shown, the maximum bandwidth in the LTE system is 20MHz; and under the spectrum bandwidth of 20MHz, LTE can provide a peak rate of downlink 100Mbit / s and uplink 50Mbit / s, improve the performance of cell edge users, increase cell c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W8/24H04W48/16H04W72/12
CPCH04L5/0053
Inventor 赵亚利许芳丽谌丽杨晓东
Owner XIAOMI INC
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