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Enhanced control channel transmission method, device and system

A technology of control channel and transmission scheme, applied in the field of communication, can solve the problems of inability to receive downlink control information, inability to realize downlink control channel transmission, etc.

Active Publication Date: 2015-05-27
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The present invention provides a method, device and system for enhanced control channel transmission. This solution can solve the problem that MTC terminals with limited bandwidth cannot receive the downlink control information transmitted on the PDCCH sent with full bandwidth and thus cannot realize the technology of downlink control channel transmission. question

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  • Enhanced control channel transmission method, device and system
  • Enhanced control channel transmission method, device and system
  • Enhanced control channel transmission method, device and system

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Embodiment Construction

[0032] see figure 2 As shown, in order to enable the bandwidth-limited MTC terminal to receive DCI on the enhanced downlink control channel without relying on the E-PDCCH technology of the legacy PDCCH, an embodiment of the present invention provides an enhanced downlink control channel transmission system, The system includes: a network side 21 and a terminal 22, wherein,

[0033] The network side 21 periodically sends the main information block of PBCH transmission, and performs E-PDCCH transmission in the search space according to the determined transmission scheme used by the E-PDCCH. At the same time, when the E-PDCCH transmission in the search space is the same The shared UERS is sent within the range of frequency resources to support E-PDCCH demodulation. In a specific implementation process, the network side that implements the above functions may be a base station.

[0034] After receiving the main information block transmitted by the PBCH, the terminal 22 uses the...

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Abstract

The invention discloses an enhanced control channel transmission method, device and system. A network side sends a main information block transmitted by a physical broadcast channel (PBCH), carries out E-PDCCH (Enhanced-Physical Downlink Control Channel) transmission in a search space according to a determined transmission scheme used by the E-PECCH and simultaneously sends a shared (UE (User Equipment) Specific Reference Signal) for supporting E-PDCCH demodulation in a range of time frequency resources with same E-PDCCH, which are transmitted in the search space. A terminal carries out blind detection by adopting the shared UERS in the search space according to the determined transmission scheme used by the E-PDCCH after receiving the main information block transmitted by the PBCH, and therefore a bandwidth-limited machine type communication (MTC) terminal can receive downlink control information on the enhanced downlink control channel independent of the original E-PDCCH technology.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an enhanced control channel transmission method, device and system. Background technique [0002] In the Long Term Evolution (LTE) system or its evolution (LTE-Advanced, LTE-A) system, after receiving the Primary Synchronous Signal (Primary Synchronous Signal, PSS) and the Secondary Synchronous Signal (Secondary Synchronous Signal, SSS), the terminal The initial search of the cell can be completed, and the downlink synchronization and cell identifier (ID) can be obtained. Receive the master information block (Master Information Block, MIB) information transmitted on the physical broadcast channel (Physical Broadcast Channel, PBCH) on the central 1.4MHz frequency band in the system bandwidth, so as to read the system bandwidth, system frame number and physical hybrid ARQ Indicator channel (Physical Hybrid ARQ Indicator Channel, PHICH) configuration. Based on the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L1/06
Inventor 张然然潘学明拉盖施赵锐
Owner DATANG MOBILE COMM EQUIP CO LTD