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Repeated information sending and receiving method, base station, and user equipment

A technology for repeating information and user equipment, which is applied in the directions of error prevention/detection through transmission repetition, channel coding adjustment, and transmission modification based on link quality. , the effect of avoiding waste of resources

Active Publication Date: 2015-07-29
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a method for sending and receiving repeated information, a base station and user equipment, so as to at least solve the problem of waste of resources or insufficient number of repetitions caused by using a fixed number of repeated transmissions to transmit the corresponding channel in the related art

Method used

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  • Repeated information sending and receiving method, base station, and user equipment
  • Repeated information sending and receiving method, base station, and user equipment
  • Repeated information sending and receiving method, base station, and user equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0131] In the coverage enhancement scenario, the base station adjusts the repetition level / times or coverage level of the downlink control channel through physical layer signaling.

[0132] In the physical layer signaling, a new bit field is added to the existing DCI format to indicate adjustment; the new bit field includes a repetition level indication field or a repetition count indication field. In physical layer signaling, 2 bits may be used to indicate three repetition levels, as shown in Table 5, for example.

[0133] Table 52bit indicates 3 coverage levels / repeat levels / times

[0134] index

Grade / Time

0

5dB / 4 times

1

10dB / 20 times

2

15dB / 80 times

[0135] The sending start subframe of the physical layer signaling is determined according to the current repetition level. The same starting subframe is used for sending the physical layer signaling for adjusting the repetition level and the control channel of the current...

Embodiment 2

[0139] In the coverage enhancement scenario, the base station adjusts the downlink traffic channel through high-layer signaling, such as Radio Resource Control (Radio Resource Control, RRC for short) signaling (including System Information Block (SIB for short) message). Repeat level / number of times or coverage level.

[0140] Wherein, the bit field used by the RRC signaling includes a repetition level indication field or a repetition count indication field. In RRC signaling, 2 bits can be used to indicate 4 repetition levels, as shown in Table 6.

[0141] Table 62bit indicates 4 coverage levels / repeat levels / times

[0142] index

Grade / Time

0

0dB / no repetition

1

5dB / 4 times

2

10dB / 30 times

3

15dB / 150 times

[0143] The PDSCH transmission start subframe carrying the RRC signaling is determined according to the timing relationship with the corresponding PDCCH, that is, the start of k subframes after the end of the...

Embodiment 3

[0147] In the coverage enhancement scenario, the base station adjusts the repetition level / times or coverage level of the uplink control channel through physical layer signaling.

[0148] In the physical layer signaling, a new bit field is added to the existing DCI format to indicate adjustment; the new bit field includes a repetition level indication field or a repetition count indication field. In physical layer signaling, 2 bits can be used to indicate 3 repetition levels, as shown in Table 7.

[0149] Table 72bit indicates 3 coverage levels / repeat levels / times

[0150] index

Grade / Time

0

5dB / None

1

10dB / 2 times

2

15dB / 10 times

[0151] The sending start subframe of the physical layer signaling is determined according to a predefined value. Sending the physical layer signaling for adjusting the repetition level uses the radio frame subframe 0 as the starting subframe and uses the number of repetitions N determined by th...

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PUM

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Abstract

Disclosed are a method for sending / receiving repeated information, a base station and a user equipment. The method for sending repeated information comprises: sending to a user equipment, by a base station, a physical layer signalling or a high layer signalling which indicates repeated information, wherein the repeated information is used for adjusting the number of times of transmission of a channel, and the repeated information comprises at least one of the following: a repetition level, the number of times of repetition and a coverage level. By means of the present invention, the problem of wasting of resources or deficient number of times of repetition caused by transmitting a corresponding channel using the fixed number of times of repeat transmission is solved, thereby avoiding wasting of resources and improving the coverage performance of a user equipment.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a method for sending and receiving repeated information, a base station and user equipment. Background technique [0002] Machine Type Communication (MTC for short) User Equipment (UE for short, also known as user equipment or terminal), also known as Machine to Machine (M2M for short) user communication equipment, It is the main application form of the Internet of Things at present. In recent years, more and more mobile operators Providers choose LTE / LTE-A as the evolution direction of broadband wireless communication systems; MTC multi-type data services based on LTE / LTE-A will also be more attractive. [0003] Among MTC application terminals, there is a type of terminal whose coverage performance is significantly degraded due to its location or its own characteristics. For example, smart meter reading MTC terminals are mostly installed in low-coverage performance environm...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/16
CPCH04L1/08H04L1/0009H04L1/189
Inventor 石靖戴博夏树强鲁照华刘锟方惠英
Owner ZTE CORP
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