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A low-delay method and device in wireless communication

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 improving transmission efficiency

Active Publication Date: 2019-12-20
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-delay method and device in wireless communication
  • A low-delay method and device in wireless communication
  • A low-delay method and device in wireless communication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0126] Embodiment 1 illustrates the flow chart of downlink 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.

[0127] for base station N1 , in step S11, the first signaling is sent, and the first signaling schedules the sending of N transport block groups. In step S12, N transport block groups are sent, and the N transport block groups are respectively sent in N LTE time slots. In step S13, it is determined that the sending power of the N uplink signaling is the first power. In step S14, N uplink signalings are respectively received in the N sub-resource groups, and the N uplink signalings respectively indicate whether the transport blocks in the N transport block groups are received correctly.

[0128] for UE U2 , receiving the first signaling in step S21. N transport block groups are received in step S22. ...

Embodiment 2

[0144] Embodiment 2 illustrates a schematic diagram of uplink signaling located in the PUCCH region, as shown in the attached figure 2 shown. attached figure 2 In , the grid filled with black dots identifies two PRBs that form a PUCCH region, the two PRBs are respectively located at the two frequency band boundaries of the current system bandwidth, and the two PRBs are respectively located at the first hour of an LTE subframe slot and the second slot. Indexes of Z PRB pairs in the current system bandwidth are integers from 0 to Z−1.

[0145] In Embodiment 2, the N in the present invention is 2, the J is 1, and the N LTE time slots are located in one LTE subframe.

[0146] As a sub-embodiment 1 of the second embodiment, the base station sends the second signaling to the UE, where the second signaling indicates L candidate resources, where L is 2. Wherein, the first signaling indicates the index of the first selected resource in the L candidate resources, the first selecte...

Embodiment 3

[0153] Embodiment 3 illustrates that the given format is a schematic diagram of the third format, as attached image 3 shown. attached image 3 In , the square marked by the thick line is the PRB corresponding to the candidate resource,

[0154] In Embodiment 3, the N in the present invention is 1, the J is 2, and the given format is the third format. The base station sends second signaling to the UE, where the second signaling indicates L candidate resources, where L is 2. Wherein, the first signaling indicates the index of the first selected resource in the L candidate resources, the first selected resource is composed of the N sub-resource groups in the present invention, and the second signaling is high-level signaling, so The L candidate resources include {the first candidate resource, the second candidate resource, the third candidate resource, and the fourth candidate resource}.

[0155] In Embodiment 3, one candidate resource includes 2 sub-resources, and the 2 sub...

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Abstract

The invention discloses a low delay method and device in wireless communication. As an embodiment, the UE receives the first signaling in step 1, and the first signaling schedules the transmission of N transport block groups; in step 2, it receives N transport block groups, and the N transport block groups are respectively in LTE time slots are sent; in step 3, N uplink signalings are respectively sent in the N sub-resource groups, and the N uplink signalings respectively indicate whether the transport blocks in the N transport block groups are received correctly. Wherein, the first signaling is physical layer signaling, and N is a positive integer. One transport block group includes G transport blocks, where G is a positive integer. One subresource group includes J subresources, the format of one subresource is a part of PUCCH format {1, 1a, 1b} in one LTE time slot, and J is 1 or 2. The invention can reduce the network delay while keeping 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): H04W52/36H04W72/04H04W72/12H04L1/16H04L1/18
CPCH04L1/16H04L1/1864H04W52/36H04W72/0446H04W72/1268H04W72/21H04W72/04
Inventor 张晓博
Owner SHANGHAI LANGBO COMM TECH CO LTD
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