Downlink data repeated transmission method and equipment

A technology for repeated transmission and downlink data, applied in the field of communication, which can solve the problems of different numbers of available REs and data that cannot be combined between subframes
CN106209330AActive Publication Date: 2016-12-07DATANG MOBILE COMM EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
DATANG MOBILE COMM EQUIP CO LTD
Publication Date
2016-12-07

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Abstract

The invention discloses a downlink data repeated transmission method and equipment. The problem that the inter-sub-frame merging of the data cannot be performed in multi-sub-frame repeated transmission since the available RE numbers for the resource mapping of the data transmission in different sub-frames are different is solved. The method comprises the following steps: determining a sub-frame set of a physical downlink channel for repeated transmission; beginning mapping from a specific start symbol position in the first time slot of the current sub-frame while performing the resource mapping on the physical downlink channel in each sub-frame of the determined sub-frame set, mapping to all resources except the resource corresponding to a reference signal for demodulation; and sending the physical downlink channel according to the resource mapping mode.
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Description

technical field

[0001] The present invention relates to the field of communication technologies, in particular to a downlink data repeated transmission method and device. Background technique

[0002] 1)MTC

[0003] With the rise of the Internet of Things, more and more attention is paid to supporting Machine Type Communication (MTC) in a Long Term Evolution (LTE) system.

[0004] 3GPP Release 13 established a project for the physical layer enhancement of MTC. An MTC device (or MTC terminal) may have some of the characteristics of various machine-to-machine (M2M) communication, such as low mobility, small amount of transmitted data, insensitivity to communication delay, requirements Very low power consumption etc. Among them, in order to reduce the cost of the MTC UE, a new UE type will be defined, and its uplink and downlink only support 1.4 megahertz (MHz) radio frequency bandwidth.

[0005] Terminals working in some scenarios in the existing network, such as terminals...

Claims

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