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Data transmission method and device

A data transmission method and process number technology are applied in the field of data transmission methods and devices, and can solve problems such as poor system transmission performance.

Active Publication Date: 2019-04-05
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Aiming at the problem of poor system transmission performance when working with unlicensed spectrum in the related art, the present invention proposes a data transmission method and device, which can flexibly adjust the data transmission of the HARQ process, avoid using carriers with severe interference for retransmission, and improve transmission performance

Method used

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  • Data transmission method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0219] Embodiment 1: The carriers aggregated or activated by the terminal are 2 FDD carriers, that is, N=2, and the maximum number of HARQ processes for each carrier is 8, that is, In order to change the carrier for data retransmission, the specific operations are as follows:

[0220] Mode 1) The HARQ process number field can at least indicate A=N×X=16, or different process IDs, including Bit information, different binary combination states of 4-bit information represent 16 different process numbers, and the process numbers are 0 to 15, corresponding to 16 different processes, as shown in Table 2;

[0221] Way 2) Suppose X max =15, the HARQ process number field can at least indicate A=N×X max = 30 different process numbers, including Bit information, different binary combination states of 5-bit information can indicate 32 different process numbers at most, and the process numbers are 0~31, corresponding to 32 processes respectively, as shown in Table 3; process, only ...

Embodiment 2

[0232] Embodiment 2: The carriers aggregated or activated by the terminal are two TDD carriers, the TDD uplink and downlink configuration of carrier 0 is configuration 0, and the maximum number of HARQ processes is 4, that is, X 0 =4, the TDD uplink and downlink configuration of carrier 1 is configuration 6, and the maximum number of HARQ processes is 6, that is, X 1 =6, in order to achieve data retransmission and change the carrier, the specific operation is as follows:

[0233] Mode 1) The HARQ process number field can at least indicate different HARQ process numbers, including at least Bit information, the specific indication relationship is shown in Table 2; since only up to 10 processes need to be indicated in this implementation, only the first 10 states in Table 2 can be defined, and the remaining states are reserved;

[0234] Mode 2) The HARQ process number field can at least indicate different HARQ process numbers, including at least Bit information, the speci...

Embodiment 3

[0241] Embodiment 3: The carriers aggregated or activated by the terminal are 1 FDD carrier (carrier 0) and 2 TDD carriers (carrier 1 and carrier 2), that is, N=3, N 1 =1,N 2 =2, the maximum number of HARQ processes for carrier 0 is 8, namely The TDD uplink and downlink configuration of carrier 1 is configuration 2, and the maximum number of HARQ processes is 10, namely The TDD uplink and downlink configuration of carrier 2 is configuration 4, and the maximum number of HARQ processes is 12, namely In order to change the carrier for data retransmission, the specific operations are as follows:

[0242] Mode 1) The HARQ process number field can at least indicate or different HARQ process numbers, including at least Bit information, the specific indication relationship is shown in Table 3; since only up to 30 processes need to be indicated in this implementation, only the first 30 states in Table 3 can be defined, and the remaining states are reserved;

[0243] Mode 2)...

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Abstract

The present invention discloses a data transmission method and apparatus, wherein the method comprising: receiving PDCCH, wherein the PDCCH comprises at least capable of indicating the sum of the maximum number of HARQ processes of a plurality of carriers of the indication domain of different HARQ processes, and the data in the same HARQ process of the first transmission and retransmission using different carriers; According to the PDCCH, the data dispatched by the PDCCH is received. By the present invention, the data in the same process may be flexibly adjusted in the transmission carrier during the initial transmission and retransmission, so that when the interference of one or some carriers is more serious, the data transmission in the process is adjusted to the carrier transmission where the interference situation is not serious, so as to improve the transmission efficiency of the system.

Description

technical field [0001] The present invention relates to the communication field, and in particular, to a data transmission method and device. Background technique [0002] With the continuous growth of mobile data traffic, spectrum resources are becoming more and more scarce, and only using authorized spectrum resources for network deployment and service transmission may not be able to meet the traffic demand. Therefore, the Long Term Evolution (LTE, Long Term Evolution) system can consider Deploy transmissions on unlicensed spectrum resources to improve user experience and extend coverage. [0003] (1) Downlink data transmission mode [0004] In the LTE system, the UE only works on one carrier; in the Long Term Evolution-Advanced (LTE-A, Long Term Evolution-Advance) system, the UE can work on N carriers at the same time. The downlink data on each carrier is scheduled through the physical downlink control channel (PDCCH, Physical Downlink Control Channel) to realize data r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04W72/04H04W16/14H04W72/54
CPCH04L1/1896H04W16/14H04W72/52H04W72/543H04L1/1822H04L1/1825H04L1/1893H04W72/23H04W72/542H04L1/1854H04L5/14H04W72/1215
Inventor 高雪娟林亚男沈祖康
Owner DATANG MOBILE COMM EQUIP CO LTD
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