Transmission method and device for control information

A technology of control information and transmission method, applied in the field of communication, can solve the problem that MTC terminals cannot correctly receive and detect control channels, etc.

Active Publication Date: 2016-01-27
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In the related art, there is no effective solution to the problem that the coverage-enhanced MTC terminal cannot correctly receive and detect the control channel in the case of transmission with different repetition times.

Method used

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  • Transmission method and device for control information
  • Transmission method and device for control information
  • Transmission method and device for control information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0211] This embodiment describes in detail the transmission of control information using the method provided by the present invention.

[0212] The base station determines the total aggregation resources for repeatedly sending the control information according to the coverage level, the repetition level, and the aggregation level, and sends the control information on the resources. As shown in Table 13, at this time the total aggregate resource (TAR) uses multiple values ​​and only one AL, there are three RL1-3 repetition levels, use one of multiple total aggregate resources, and use AL4 and RL4 in the table to transfer.

[0213] Table 13

[0214] TAR (CCE)

AL(CCE)

RL(times)

8

4

2

16

4

4

32

4

8

[0215] When adding scrambling codes in control information processing, the repetition level (RL) is used as the initial value c of the scrambling sequence init One of the items makes the scrambling sequences diffe...

Embodiment 2

[0220] This embodiment describes in detail the transmission of control information using the method provided by the present invention.

[0221] The base station determines the total aggregation resources for repeatedly sending the control information according to the coverage level, the repetition level, and the aggregation level, and sends the control information on the resources. As shown in Table 14, at this time, the coverage level (CL) is CL1, a single aggregation level is used, and AL8 and RL2 in the table are used for transmission.

[0222] Table 14

[0223] TAR (CCE)

AL(CCE)

RL(times)

16

8

2

16

4

4

16

2

8

[0224] The terminal blindly detects and receives the control information, and uses a single value of the total aggregation resource, and needs to blindly detect three repetition levels (RL), and the aggregation level corresponds to the repetition level one by one.

[0225] Through this embodiment...

Embodiment 3

[0227] This embodiment describes in detail the transmission of control information using the method provided by the present invention.

[0228] The base station determines the total aggregation resources for repeatedly sending the control information according to the coverage level, the repetition level, and the aggregation level, and sends the control information on the resources. As shown in Table 15, at this time, the total aggregation resource (TAR) uses multiple values ​​and has multiple RLs, one RL corresponds to one TAR, and corresponds to one AL, and the ALs corresponding to different RLs are not all the same. There are 3 repetition levels RL1-3, using one of multiple aggregated resources, and using AL8 and RL4 in the table for transmission.

[0229] Table 15

[0230] TAR (CCE)

AL(CCE)

RL(times)

64

4

16

32

8

4

16

8

2

[0231] When adding scrambling codes in the processing of control information, the...

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Abstract

The invention discloses a transmission method and a transmission device for control information. The transmission method comprises the steps that: a base station determines a source sending control information repeatedly according to predefined information, wherein the predefined information comprises at least one of coverage level, repetition level/times and aggregation level; and the base station sends the control information on the determined source repeatedly. Through the transmission method and the transmission device, the problem that an MTC terminal with enhanced coverage cannot receive a detection control channel correctly under the condition of different repetition times of transmission is solved, thereby guaranteeing normal communication requirement of the terminal equipment.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a control information transmission method and device. Background technique [0002] Machine Type Communication (MTC for short) user equipment (User Equipment, user equipment or terminal for short), also known as Machine to Machine (M2M) user communication equipment, is currently the main application form of the Internet of Things. In recent years, due to the high spectrum efficiency of Long-Term Evolution (abbreviated as LTE) / Long-Term Evolution Advanced (abbreviated as LTE-Advance or LTE-A), more and more mobile operators choose LTE / LTE-A is the evolution direction of the broadband wireless communication system. MTC multi-type data services based on LTE / LTE-A will also be more attractive. [0003] The existing LTE / LTE-A system performs transmission based on dynamic scheduling of each subframe, that is, each subframe can transmit a different control channel. [0004] A phys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04W4/20H04W4/00H04W76/10
CPCH04W76/10
Inventor 石靖戴博夏树强刘锟陈宪明方惠英
Owner ZTE CORP
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