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Method and device for sending information

A technology of information sending and sending end, which is applied in the field of information sending methods and devices, and can solve problems such as lack of configuration of the same subframe, and achieve the effect of reducing air interface delay

Inactive Publication Date: 2018-02-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently a lack of a corresponding solution for how to implement the same subframe configuration under different short TTI length designs

Method used

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  • Method and device for sending information
  • Method and device for sending information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment provides a method for sending information, such as figure 1 shown, including:

[0027] Step 110, the sending end determines the scheduling configuration in the subframe, the scheduling configuration includes the length, number and position of the short transmission time interval TTI and the number and position of the reference signal reference symbols, wherein at least two lengths are included in a subframe A short TTI, the length of the short TTI is j symbols, j∈{2,4,7};

[0028] In this embodiment, the short TTIs in the scheduling configuration are all used for downlink transmission, or all are used for uplink transmission; the symbols are single carrier frequency division multiplexing symbols or orthogonal frequency division multiplexing symbols.

[0029] In this embodiment, the sending end determines the scheduling configuration in the subframe, including: selecting a scheduling configuration from a predetermined scheduling configuration set, and th...

Embodiment 2

[0057] This embodiment provides an information sending device, such as figure 2 shown, including:

[0058] The configuration module 10 is configured to: determine the scheduling configuration in the subframe, the scheduling configuration includes the length, quantity and position of the short transmission time interval TTI and the quantity and position of the reference signal reference symbols, wherein at least two A short TTI of various lengths, the length of the short TTI is j symbols, j∈{2,4,7};

[0059] The sending module 20 is configured to: send reference signals and user information according to the scheduling configuration.

[0060] In this embodiment, the device is a terminal; the configuration module determines the scheduling configuration in the subframe, including: dynamically determining the scheduling configuration in the subframe according to base station signaling, and / or determining semi-statically according to high-layer signaling Scheduling configuration ...

Embodiment 3

[0090] This embodiment provides a configuration mode in which short TTIs with a length of 2 symbols and a length of 4 symbols are included in a subframe and the number of reference symbols is 2, which corresponds to configuration mode A in the first type of configuration mode above.

[0091] For existing LTE / LTE-A, there are 14 SC-FDMA symbols (regular cyclic prefix length) in one uplink subframe, assuming that the uplink short TTI can be shortened to 2 or 4 symbol lengths. image 3 Given is a part of combinations when the number of reference symbols is 2 to ensure that short TTIs do not cross subframe boundaries, and each combination represents a scheduling configuration. The structure of the two slots in a subframe of these combinations is the same, and each slot contains a short TTI with a length of 2 symbols and a short TTI with a length of 4 symbols. The two short TTIs multiplex a reference symbol in the time slot where the reference symbol is located in front of the two ...

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Abstract

The invention discloses a method and device for sending information. The method for sending the information comprises the following steps: a sending end confirms the scheduling configuration in a subframe, and the scheduling configuration comprises the length, number and position of a short transmission time interval (short TTI) and the number and position of a reference symbol, wherein one subframe contains short TTI with at least two kinds of length, and the length of the short TTI is a j symbols, wherein the j belongs to the set {2, 4, 7}; and the sending end sends RS and user information according to the scheduling configuration. The sending end comprises a configuration module and a sending module. By means of the method and device for sending the information, the same subframe configuration with different short TTI lengths is realized, and the number and location of the reference symbols can be adjusted to form a plurality of short TTI configurations, therefore, different scheduling requirements are met, and the air interface delay is reduced.

Description

technical field [0001] The present invention relates to wireless communication, and more specifically, to an information sending method and device. Background technique [0002] In the third generation partnership project (3GPP, 3 rd In the Generation Partnership Project) long-term evolution (LTE, Long Term Evolution) and advanced long-term research (LTE-A, LTE-Advanced) system, the transmission time interval (TTI, Transmission Time Interval) is the downlink and uplink transmission scheduling in the time domain basic unit. For example, in the LTE / LTE-A Frequency Division Duplex (FDD, Frequency Division Duplex) system, the time dimension is divided into radio frames with a length of 10ms, where each radio frame includes 10 subframes, and the short TTI length is equal to the subframe length is 1ms. Each subframe includes two time slots, and the length of each time slot is 0.5ms. Each downlink time slot contains 7 Orthogonal Frequency Division Multiplexing (OFDM, Orthogona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/00H04W72/04H04W72/08H04W72/54
CPCH04L5/0007H04L5/005H04L5/0051H04W72/543H04W72/23
Inventor 韩祥辉夏树强张雯石靖陈冬雷任敏张文峰
Owner ZTE CORP
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