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Method and device in wireless communication

A wireless signal and signaling technology, applied in the field of low-latency transmission based on long-term evolution, can solve the problem of inability to obtain frequency diversity gain

Active Publication Date: 2018-02-06
SHANGHAI LANGBO COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a solution to the problem that the LTE system cannot obtain frequency diversity gain in the process of uplink and downlink resource allocation after the short TTI is introduced

Method used

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  • Method and device in wireless communication
  • Method and device in wireless communication
  • Method and device in wireless communication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0167] Embodiment 1 illustrates the flow chart of downlink transmission, as attached figure 1 shown. attached figure 1 In , base station N1 is the maintenance base station of the serving cell of UE U2, and the steps identified in block F1 are optional.

[0168] for base station N1 , the second signaling set is sent in step S11, the first signaling set is sent in step S12, and the first wireless signal is sent in step S13.

[0169] for UE U2 , the second signaling set is received in step S21, the first signaling set is received in step S22, and the first wireless signal is received in step S23.

[0170] In Embodiment 1, the time-domain resource occupied by the first wireless signal belongs to a target time interval, and the target time interval is one of L time intervals, where L is a positive integer greater than 1, and the L The duration of any one of the intervals is less than 1 millisecond. The first wireless signal carries a first bit block, the first bit block inclu...

Embodiment 2

[0178] Embodiment 2 illustrates the flow chart of uplink transmission, as attached figure 2 shown. attached figure 2 In , base station N3 is the maintenance base station of the serving cell of UE U4, and the steps identified in block F2 are optional.

[0179] for base station N3 , the second signaling set is sent in step S31, the first signaling set is sent in step S32, and the first wireless signal is received in step S33.

[0180] for UE U4 , the second signaling set is received in step S41; the first signaling set is received in step S42, and the first wireless signal is sent in step S43.

[0181] In Embodiment 2, the time-domain resource occupied by the first wireless signal belongs to a target time interval, and the target time interval is one of L time intervals, where L is a positive integer greater than 1, and the L The duration of any one of the intervals is less than 1 millisecond. The first wireless signal carries a first bit block, the first bit block inc...

Embodiment 3

[0189] Embodiment 3 illustrates a schematic diagram of the relationship between the target time interval and L time intervals, as attached image 3 shown. in the attached image 3 , each box represents one of the L time intervals, the filled boxes represent the target time interval, the target time interval is one of the L time intervals, and the L time intervals form a A subframe (subframe), the L is a positive integer greater than 1.

[0190] In sub-embodiment 1 of embodiment 3, any one of the L time intervals includes R consecutive OFDM symbols in the time domain, the OFDM symbols include a cyclic prefix, and R is a positive integer.

[0191] In sub-embodiment 2 of embodiment 3, the durations of the L time intervals are the same.

[0192] In sub-embodiment 3 of embodiment 3, the durations of two time intervals among the L time intervals are different.

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Abstract

The present invention discloses a method and device in wireless communication. UE receives a first signaling set. and the first wireless signals are operated. The first wireless signals occupy a target time interval, and the target time interval is one of L time intervals being smaller than 1 millisecond. The first signaling set comprises P downlink signalings. A frequency domain resource occupiedby the first wireless signals is a first frequency domain resource. The first signaling set is configured to determine a second frequency domain resource. At least one of the first signaling set anda position of a target time interval in L time intervals is configured to determine a mapping relation from the second frequency domain resource to the first frequency domain resource. The first frequency domain resource and the second frequency domain resource respectively belong to different time intervals. The operation is sending, or the operation is receiving. The method and device in wireless communication provide frequency diversity gain for wireless signals supporting transmission of time intervals being smaller than 1 millisecond and improve a transmission performance.

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 (Radio Access Network, radio access network) #63 plenary session, it was decided to conduct research on the topic of reducing the delay of the LTE network. 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. At the RAN#72 plenary meeting, based on previous research results, 3GPP decided to standardize the shortening ...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04W72/04
CPCH04L5/0053H04W72/0446H04W72/21H04W72/23
Inventor 张晓博
Owner SHANGHAI LANGBO COMM TECH CO LTD
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