Method and device for reducing network delay in wireless communication

A wireless communication and low-latency technology, which is applied in the field of control channels for low-latency transmission, can solve problems such as unusability, and achieve the effect of reducing load size, improving transmission efficiency or robustness

Active Publication Date: 2017-04-12
SHANGHAI LANGBO COMM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For shorter TTIs, a problem that needs to be studied is that if the uplink data is transmitted in PRB instead of PRB pairs, the existing PUSCH Type 0 resource allocation method will not be able to use the frequency hopping mapping method on the second time slot

Method used

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  • Method and device for reducing network delay in wireless communication
  • Method and device for reducing network delay in wireless communication
  • Method and device for reducing network delay in wireless communication

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0117] Embodiment 1 illustrates a flow chart of an embodiment including sending and receiving high-level signaling, and determining the Z step, as shown in the 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.

[0118] For the base station N1, the first signaling is sent in step S11.

[0119] Wherein, the first signaling is a physical layer signaling, and the first signaling includes scheduling information of the first data. The first data includes N transport block groups, where N is a positive integer, and the N transport block groups are respectively transmitted in N LTE time slots. The first signaling is used to indicate that the number of bits of the first PRB set is less than or equal to Y+2, and the Y is a resource block determined according to the scheme of LTE DCI format 0 for the carrier scheduled by the first signaling ...

Embodiment 2

[0219] Embodiment 2 illustrates a flow chart of an embodiment that does not include sending and receiving high-level signaling, and does not include the step of determining Z, as shown in the attached figure 2 shown. attached figure 2 In , the base station N3 is the maintenance base station of the serving cell of the UE U4.

[0220] For the base station N3, the first signaling is sent in step S31.

[0221]Wherein, the first signaling is a physical layer signaling, and the first signaling includes scheduling information of the first data. The first data includes N transport block groups, where N is a positive integer, and the N transport block groups are respectively transmitted in N LTE time slots. The first signaling is used to indicate that the number of bits of the first PRB set is less than or equal to Y+2, and the Y is a resource block determined according to the scheme of LTE DCI format 0 for the carrier scheduled by the first signaling Number of bits allocated for...

Embodiment 3

[0231] Embodiment 3 shows a schematic diagram of a resource allocation manner corresponding to a candidate PRB subset one of a candidate PRB set one according to the present invention. Assume here Then Y=11, and And 9 bits are used to indicate the position of the VRB where the first PRB set is located. Specifically, as shown in the figure, 9 bits are used to indicate the starting position of a continuous VRB RB start and its length L CRBs , the specific RB start =15,L CRBs =9, then the RIV corresponding to 9 bits can refer to the part of Section 8.1.1 of TS 36.213, here is And this embodiment corresponds to Figure (a) is a schematic diagram of VRB resource allocation indicated by RIV, and Figure (b) is a schematic diagram of PRB resource allocation based on this VRB allocation. Depend on image 3 As can be seen, the original L CRBs consecutive VRBs are divided into G=2 PRB subsets, and the first PRB subset occupies RB start to the PRB. The second PRB subset oc...

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Abstract

The invention discloses a method and device for reducing the network delay in wireless communication. The method comprises the steps that UE receives a first signal, wherein the first signal is a physical layer signal and comprises the dispatching information of first data; the UE transmits the first data in a first PRB set according to the first signal, wherein the first PRB set is any one of K types of candidate PRB sets and comprises at least one PRB, G PRB subsets comprise M PRBs altogether, and the PRBs in the PRB subsets are continuous in the frequency domain. According to the invention, the method guarantees that the first data is compatible with a conventional system in a transmission process through the design of a new resource allocation mode corresponding to the candidate PRB sets, and obtains higher diversity gain, so as to guarantee the performance gain of the whole system during time delay.

Description

technical field [0001] The present invention relates to a transmission scheme in a wireless communication system, in particular to a control channel method and device for low-delay transmission based on Long Term Evolution (LTE-Long Term Evolution). Background technique [0002] At the 3GPP (3rd Generation Partner Project, third generation partnership project) RAN (Radio Access 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 Reso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04
CPCH04W72/0453H04W72/23H04W72/04
Inventor 蒋琦
Owner SHANGHAI LANGBO COMM TECH CO LTD
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