Data transmission indication and processing method and device

A data transmission and indication technology, applied in the direction of synchronization devices, electrical components, wireless communication, etc., can solve problems such as data conflicts of different lengths of TTI

Active Publication Date: 2018-04-03
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a data transmission instruction, processing method and device to solve the problem that TTI data of

Method used

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  • Data transmission indication and processing method and device
  • Data transmission indication and processing method and device
  • Data transmission indication and processing method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0198] Figure 6 It is a schematic diagram of how the base station instructs the PUSCH of the terminal 1 to make a puncture, as shown in the figure, assuming that the base station is in the traditional control area of ​​the downlink subframe n (occupying the first 1-4 OFDM (Orthogonal Frequency Division Multiplex, orthogonal frequency division multiplex) of a subframe frequency division multiplexing) symbol) to send UL grant_1 to instruct Terminal 1 to schedule a PUSCH with a 1ms length TTI transmission, assuming that the 1ms length TTI PUSCH scheduled by the UL grant_1 according to a certain scheduling sequence is transmitted on the uplink subframe n+4, and the base station In downlink subframe n+3, use shortened DCI (short DCI) to send UL grant_2 to schedule a TTI with a length of 2 symbols to transmit PUSCH. This short TTI data is in the 8th and 9th symbol positions of the 1ms length TTI in uplink subframe n+4 Transmission and frequency resources completely overlap.

[019...

Embodiment 2

[0203] Figure 7 A schematic diagram of puncture indicating the PUSCH of Terminal 1 for the base station in Embodiment 2, as shown in Figure 7 As shown, it is assumed that the base station sends UL grant_1 in the traditional control area of ​​downlink subframe n to instruct terminal 1 to schedule a PUSCH with a length of 1 ms TTI transmission. For transmission on +4, the base station sends a UL grant_2 scheduling TTI with a length of 2 symbols to transmit PUSCH in the traditional control area in the downlink subframe n+3. This short TTI data is in the 13th TTI of 1ms length in the uplink subframe n+4 , Transmission at 14 symbol positions, and frequency resources completely overlap. The base station chooses to send the notification signaling P while sending the UL grant_2 in the traditional control area of ​​the downlink subframe n+3. The indication field of the notification signaling P is 6-bit information, and the first 4 bits indicate the starting symbol position of the pu...

Embodiment 3

[0207] Figure 8 A schematic diagram of puncture indicating the PUSCH of Terminal 1 for the base station in Embodiment 3, as shown in Figure 8 As shown, it is assumed that the base station sends UL grant_1 in the traditional control area of ​​downlink subframe n to instruct terminal 1 to schedule a PUSCH with a length of 1 ms TTI transmission. For transmission on +4, the base station sends UL grant_2 in the shortened DCI of downlink subframe n+1 to schedule a TTI with a length of 2 symbols to transmit PUSCH. 7 symbol positions are transmitted, and the frequency resources are completely overlapped. The base station sends UL grant_3 in the shortened DCI of the downlink subframe n+2 to schedule a TTI with a length of 2 symbols to transmit PUSCH. The TTI data is in the 1ms length of the uplink subframe n+4. The 9th and 10th symbol positions of the TTI are transmitted, and the frequency resources completely overlap. The base station selects the shortened DCI of the downlink subf...

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Abstract

The invention discloses a data transmission indication and processing method and device, and the method comprises the steps: transmitting uplink scheduling information to a terminal from a base station side during uplink, so as to carry out the scheduling of one physical uplink sharing channel employing a first transmission time interval; transmitting an uplink notification signal to the terminalafter the uplink scheduling information is transmitted, so as to indicate the terminal to carry out the slotting on the physical uplink sharing channel, employing the first transmission time intervalfor uplink transmission, according to the uplink notification signal; carrying out the slotting at the base station side during the downlink, transmitting a downlink notification signal to the terminal, so as to indicate the terminal to determine a symbol, which has been slotted on a physical downlink sharing channel employing the first transmission time interval for downlink transmission, according to the downlink notification signal. According to the invention, the method solves a conflict problem of the simultaneous transmission of data with different transmission time intervals at the samesubframe and same carrier, and can improve the receiving performances of a receiving terminal.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a data transmission instruction, processing method and device. Background technique [0002] After the short TTI (Transmission Time Interval, transmission time interval) is introduced in the LTE (Long Term Evolution, long term evolution) system, there will be a problem that short TTI data and 1ms TTI data are simultaneously transmitted on the same carrier in the same subframe. [0003] figure 1 It is a schematic diagram of the simultaneous scheduling of the regular latency terminal 1 and the low latency terminal 2 in the same subframe and the same carrier, as shown in figure 1 , the base station transmits UL grant_1 (uplink scheduling information) in subframe n to schedule a terminal 1 to perform PUSCH (Physical Uplink Shared Channel, physical uplink shared channel) transmission in subframe n+4. At this time, there is a low-latency terminal 2 There is a d...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W72/12
CPCH04W72/0446H04W72/21H04W56/00H04W72/04H04W72/12
Inventor 林祥利潘学明高雪娟
Owner DATANG MOBILE COMM EQUIP CO LTD
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