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A low-latency wireless communication method and device

A wireless communication, low-latency technology, applied in the field of low-latency transmission based on long-term evolution, can solve problems such as LTE long air interface delay, and achieve the effect of saving overhead

Active Publication Date: 2019-09-06
SHANGHAI LANGBO COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of long air interface delay in LTE, the present invention provides a solution

Method used

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  • A low-latency wireless communication method and device
  • A low-latency wireless communication method and device
  • A low-latency wireless communication method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] Embodiment 1 exemplifies uplink HARQ-ACK transmission, as attached figure 1 shown. attached figure 1 In , the base station N1 is the maintenance base station of the serving cell of the UE U2, and the steps identified in the block F1 are optional steps.

[0104] for base station N1 , send Q downlink signaling in step S10, send Q1 type I data and Q2 type II data in step S11, and receive first information and second information in step S12.

[0105] for UE U2 , receiving Q pieces of downlink signaling in step S20, receiving Q1 pieces of type I data and Q2 pieces of type II data in step S21, and sending the first information and the second information in step S22.

[0106] In Embodiment 1, the Q downlink signaling schedules the Q2 Type II data, the Type I data includes one or more Type I transport blocks, and the Type II data includes one or more Type II transport blocks . The first information indicates whether the type I transport block in the Q1 type I data is co...

Embodiment 2

[0112] Embodiment 2 illustrates a schematic diagram of the transmission of the first information and the second information on the same LTE time slot, as shown in the attached figure 2 shown. attached figure 2 Among them, CC identifies the carrier (Component Carrier), the square filled with slash marks the carrier and time interval occupied by Type I data, the square filled with backslash marks the carrier and time interval occupied by Type II data, and the vertical line is filled The squares in identify the carriers and time intervals used to transmit the first information and the second information.

[0113] In Embodiment 2, the base station sends Q1 pieces of type I data and Q2 pieces of type II data to the UE, and the UE sends the first information and the second information to the base station in a second LTE time slot on a given carrier.

[0114]Wherein, the Q1 type I data are respectively transmitted on the Q1 serving cells, that is, the carriers of the serving cell...

Embodiment 3

[0121] Embodiment 3 illustrates a schematic diagram of the transmission of the first information on two LTE time slots, as shown in the attached image 3 shown. attached image 3 Among them, CC identifies the carrier, the grid filled with slashes indicates the carrier and time interval occupied by Type I data, the grid filled with backslashes indicates the carrier and time interval occupied by Type II data, and the grid filled with black dots indicates the carrier and time interval occupied by Type II data Carriers and time intervals used to transmit the first output sequence, and squares filled with vertical lines identify carriers and time intervals used to transmit the second output sequence.

[0122] The base station first transmits Q1 type I data and Q2 type II data; then receives modulation symbols modulated by the first output sequence in the fifth LTE time slot on a given carrier, and receives modulation symbols modulated by the first output sequence in the sixth LTE ...

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Abstract

The invention discloses a low-delay wireless communication method and device. As an embodiment, the UE receives Q1 pieces of type I data and Q2 pieces of type II data in step one, and sends the first information and the second information in step two. Wherein, the first information indicates whether the type I transport block in the Q1 type I data is correctly decoded, and the second information indicates whether the type II transport block in the Q2 type II data is correctly decoded. A Type I transport block corresponds to a long TTI, and a Type II transport block corresponds to a short TTI. Before channel coding, the first information corresponds to the first bit sequence, and the second information corresponds to the second bit sequence. After channel coding, at least one bit in the first bit sequence and at least one bit in the second bit sequence correspond to the same output sequence. The invention can reduce the network delay, improve the transmission efficiency of the PUCCH, and at the same time maintain the compatibility with the existing LTE equipment as much as possible.

Description

technical field [0001] The present invention relates to a transmission scheme in a wireless communication system, in particular to a method and device for low-delay transmission based on Long Term Evolution (LTE-LongTerm Evolution). Background technique [0002] At the 3GPP (3rd Generation Partner Project, third generation partnership project) RAN (RadioAccess Network, radio access network) #63 plenary meeting, the topic of reducing the delay of the LTE network was discussed. The delay of the LTE network includes air interface delay, signal processing delay, and transmission delay between nodes. With the upgrading of the radio access network and the core network, the transmission delay is effectively reduced. With the introduction of new semiconductors with higher processing speeds, signal processing delays have been significantly reduced. [0003] In LTE, a TTI (Transmission Time Interval, transmission time interval) or a subframe or a PRB (Physical Resource Block) pair (...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04W72/04
CPCH04L5/0044H04L5/0055H04W72/0446H04L1/18
Inventor 张晓博
Owner SHANGHAI LANGBO COMM TECH CO LTD
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