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A harq-ack feedback method in D2D mode in LTE network

A mode and network technology, applied in the field of HARQ-ACK feedback, can solve the problem of D2D link being unable to schedule resources, and achieve the effect of enhancing the flexibility of resource scheduling

Inactive Publication Date: 2017-09-29
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that when the amount of cellular network services and D2D service data between users is not equal, the D2D link cannot perform flexible resource scheduling according to its own service volume.

Method used

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  • A harq-ack feedback method in D2D mode in LTE network
  • A harq-ack feedback method in D2D mode in LTE network
  • A harq-ack feedback method in D2D mode in LTE network

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Embodiment Construction

[0032]In order to make the purpose, technical means and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.

[0033] The basic idea of ​​the present application is to reduce the subframes occupied by feeding back the HARQ-ACK information, thereby reducing the subframes with limited scheduling and improving the flexibility of D2D scheduling.

[0034] Figure 4 It is an overall flowchart of the HARQ-ACK feedback method in this application. Wherein, the FDD LTE system is taken as an example for description, and it is also applicable to the TDD LTE system. Such as Figure 4 As shown, the method includes:

[0035] Step 401, instruct the UE to be the sender or receiver of the D2D transmission.

[0036] The specific indication information may be carried in an existing signaling message, or a new message may be customized to transmit corresponding indication information. Th...

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Abstract

The application discloses an HARQ-ACK feedback method in a D2D mode in an LTE network. The method comprises the following steps: a network side sends a parameter NumBundling to UE in the D2D mode, wherein NumBundling is an integer greater than 1; and according to the received parameter NumBundling, the UED carries HARQ-ACK information of NumBundling successive downlink subframes in an uplink subframe to feed the information back to the network side. By using the application, the subframes occupied by HARQ-ACK feedback in the LTE network can be reduced, thereby improving the resource allocation flexibility of the D2D mode.

Description

technical field [0001] The present application relates to D2D communication, in particular to a HARQ-ACK feedback method in D2D mode in an LTE network. Background technique [0002] In order to make better use of limited spectrum resources, LTE-A pays more and more attention to research on heterogeneous networks. How to deploy different systems in a given frequency band, such as macro cells, micro cells, pico and femto cells, and relay nodes, etc., so that different systems can cooperate and communicate on the same frequency resources has become a hot issue that everyone pays attention to. The introduction of device-to-device (D2D) communication mode in LTE-A also belongs to the research category of heterogeneous network communication. D2D communication can effectively reduce the power consumption of communication equipment, reduce communication delay, and improve the throughput of the entire system. Therefore, the coordinated communication between D2D network and cellular ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/12H04L1/16H04L1/18
Inventor 郭晨陈哲
Owner POTEVIO INFORMATION TECH CO LTD