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Method and device of realizing data transmission

A technology of data transmission and transmission mode, applied in the direction of error prevention/detection using the return channel, which can solve the problems of difficult cooperation, LTE system occupying unlicensed spectrum, and large number of users.

Active Publication Date: 2016-06-01
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned advantages of unlicensed spectrum also bring related problems: 1. There are many wireless access technologies (across different communication standards, difficult to cooperate, and diverse network topologies); 2. There are many wireless access sites (large number of users, difficult to cooperate) Large, centralized management overhead); 3. Many applications (from the data, it is mentioned that multiple services can be operated in it, such as Machinetomachine (M2M), Vehicletovehicle (V2V))
In order to ensure that each system uses the unlicensed spectrum fairly, the LTE system may discontinuously occupy the unlicensed spectrum

Method used

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  • Method and device of realizing data transmission
  • Method and device of realizing data transmission
  • Method and device of realizing data transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0186] The maximum number of HARQ processes corresponding to the carrier on the unlicensed spectrum is a fixed value, because the transmission mode of the SCell is SDL, by determining the maximum number of downlink (DL) HARQ processes corresponding to the carrier on the unlicensed spectrum, that is, the maximum number of DLHARQ processes of the SCell The number is a fixed value of 8, figure 1 (a) is a schematic diagram of a carrier structure for realizing data transmission in Embodiment 1 of the present invention, such as figure 1 As shown in (a), because the maximum number of DLHARQ processes is 8, then the retransmission data of DLHARQ1 can be sent at the earliest in the radio frame X subframe 9. Here, the retransmission data can be sent at the earliest in the radio frame X subframe 9 because The maximum number of hybrid automatic repeat request (HARQ) processes corresponding to the carrier on the unlicensed spectrum in carrier aggregation is 8, so it occupies 8 subframes, a...

Embodiment 2

[0188] Obtain the maximum number of HARQ processes corresponding to the carrier on the unlicensed spectrum in carrier aggregation according to the transmission mode of the carrier, because the SCell is pure downlink transmission, so it is to determine the maximum number of DLHARQ processes corresponding to the carrier on the unlicensed spectrum;

[0189] When the transmission method of the carrier is pure downlink (SDL), the maximum number of HARQ processes is the maximum number of HARQ processes corresponding to the frequency division duplex (FDD) system; The maximum number of DLHARQ processes is 8), the schematic diagram and figure 1 (a) is the same, because the maximum number of DLHARQ processes is 8, then the retransmission data of DLHARQ1 can be sent at the earliest in radio frame X subframe 9.

Embodiment 3

[0191] According to the HARQ timing used by the carrier, the maximum number of HARQ processes corresponding to the carrier on the unlicensed spectrum in the carrier aggregation is obtained. Since PCell is an FDD carrier and SCell1 is for SDL transmission, the HARQ timing corresponding to SCell follows the HARQ timing of PCell (the specific HARQ timing The determination is related to the aggregated primary serving cell, the type of secondary serving cell, and the uplink-downlink configuration), that is, according to the HARQ timing corresponding to the existing FDD system, so the maximum number of HARQ processes of the SCell is the same as the maximum number of HARQ processes corresponding to the FDD system , that is, 8, because the maximum number of DLHARQ processes is 8, then the retransmission data of DLHARQ1 can be sent at the earliest in radio frame X subframe 9.

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Abstract

The application discloses a method and device of realizing data transmission. The method comprises the steps of obtaining the maximum hybrid automatic repeat request (HARQ) process number corresponding to a carrier located in an unauthorized frequency spectrum in the carrier aggregation; transmitting the data in the unauthorized frequency spectrum according to the obtained maximum HARQ process number. According to the method of the present invention, by obtaining the maximum HARQ process number corresponding to the carrier located in the unauthorized frequency spectrum in the carrier aggregation, the problem of transmitting the data in the unauthorized frequency spectrum is solved, thereby realizing the data transmission in the unauthorized frequency spectrum.

Description

technical field [0001] The present application relates to the field of wireless communication, in particular to a method and device for realizing data transmission. Background technique [0002] As of now, it is well known that LTE is deployed and operated on licensed carriers. However, with the rapid growth of data services, in the near future, licensed spectrum will no longer be able to bear such a huge amount of data. Therefore, deploying LTE in the unlicensed spectrum and sharing the data traffic in the licensed carrier through the unlicensed spectrum is an important evolution direction of the subsequent LTE development. [0003] For unlicensed spectrum, there are the following advantages: 1. Unlicensed spectrum resources are free / low-cost (no need to purchase unlicensed spectrum, and spectrum resources have zero cost); 2. Low access requirements and low cost (individuals and enterprises can participate Deployment, the equipment of the equipment manufacturer can be arb...

Claims

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Application Information

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IPC IPC(8): H04L1/18
CPCH04L1/18
Inventor 杨维维戴博梁春丽鲁照华
Owner ZTE CORP
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