Network equipment, user equipment and downlink data transmission method

A technology for downlink data and network equipment, applied in wireless communication, electrical components, etc., can solve problems such as large packet delay

Active Publication Date: 2020-01-31
HONOR DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Embodiments of the present invention provide a network device, user equipment and a downlink data transmission method to solve the problem of excessive delay of some data packets transmitted on unlicensed spectrum in the LAA system

Method used

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  • Network equipment, user equipment and downlink data transmission method
  • Network equipment, user equipment and downlink data transmission method
  • Network equipment, user equipment and downlink data transmission method

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0824] Such as Figure 7 Shown, embodiment one comprises the following steps:

[0825] S701: The UE receives the cross-HARQ entity / cross-cell retransmission configuration information sent by the eNB. The configuration information includes the identifiers of one or more L-Cells that perform cross-HARQ entity / cross-cell retransmission for the U-Cell, and the U-Cell - the HARQ process Y of the Cell, the identifier of the HARQ process X used to replace the U-Cell for retransmission on the L-Cell. On the UE, the HARQ process X can use the same cache as the corresponding HARQ process Y on the U-Cell.

[0826] Specifically, a HARQ process Y of a U-Cell may be replaced by a HARQ process X of an L-Cell for retransmission. Alternatively, a U-Cell HARQ process Y can also be composed of multiple HARQ processes of an L-Cell, such as: X 1 , X 2 …X n Do an alternate retransmission. Or multiple HARQ processes Y of one U-Cell 1 , Y 2 ...Y m Multiple HARQ processes X can be used by one...

Embodiment 2

[0842] In Embodiment 2, the HARQ processes of U-Cell and L-Cell are kept independent of each other, that is, the HARQ processes of U-Cell and L-Cell are assigned numbers independently, that is, the HARQ entities of U-Cell and the HARQ processes corresponding to L-Cell The HARQ processes on the entity may have the same HARQ process number.

[0843] Such as Figure 8 As shown, embodiment two comprises the following steps:

[0844] S801: The UE receives cross-HARQ entity / cross-cell retransmission configuration information sent by the eNB, where the configuration information includes information about one or more L-Cells that perform cross-HARQ entity / cross-Cell retransmission for the U-Cell. Specifically, each U-Cell may be correspondingly configured with one or more L-Cells as its replacement transmission cells.

[0845] S802: The eNB performs resource competition on the unlicensed carrier, and allocates resources for the UE on the U-Cell to perform data transmission when reso...

Embodiment 3

[0862] In Embodiment 3, U-Cell and L-Cell share a resource pool of HARQ process numbers, that is, the HARQ process numbers of U-Cell and L-Cell are uniformly numbered, and the HARQ entity of U-Cell and the HARQ process number corresponding to L-Cell The same HARQ process number will not appear among the HARQ processes on the entity.

[0863] Such as Figure 9 Shown, embodiment three comprises the following steps:

[0864] S901: The UE receives the U-Cell configuration information sent by the eNB, the U-Cell configuration information includes the HARQ process number that can be used by the U-Cell, or the range of HARQ process numbers that can be used, or the initial HARQ process that should be used No.

[0865] For example, for an LTE FDD system, the value range of the HARQ process number that can be used by the L-Cell can be: 0-7, and the value range of the HARQ process number that can be used by the U-Cell can be: 8-15.

[0866] For the LTE TDD system, the value range of t...

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Abstract

The present invention relates to a wireless communication technology, and in particular, to a network device, a user equipment (UE) and a downlink data transmission method, which are used to solve the problem of over-large delay of some data packets transmitted on an unlicensed spectrum in a license assisted access (LAA) system. In the network device provided by embodiments of the present invention, a transceiving module is configured to initially transmit, by means of a hybrid automatic repeat request (HARQ) process Y of an unlicensed cell (U-cell), downlink data to a user equipment (UE); a processing module is configured to determine that the downlink data is repeated by means of a licensed cell (L-cell); and the transceiving module is further configured to repeat, by means of the L-cell, the downlink data to the UE. Thus, the problem of over-large delay of some data packets transmitted on an unlicensed spectrum caused by shortage of resources on the unlicensed spectrum is avoided.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a network device, user equipment and a downlink data transmission method. Background technique [0002] Spectrum management is a spectrum planning method established for the effective use of radio frequencies. At present, in spectrum management, a part of the spectrum is authorized to a certain mobile communication system, such as Universal Mobile Telecommunications Service (Universal Mobility Telecommunications Service, UMTS) or Long Term Evolution (Long Term Evolution, LTE) system, etc., and this part of the spectrum is called "Licensed spectrum (licensed spectrum)", corresponding to the carrier on the licensed spectrum is usually also called "licensed carrier (licensed carrier)". [0003] In addition, some frequency spectrums are allocated for use by unlicensed wireless communication devices, such as wireless fidelity (WiFi, Wireless Fidelity) devices. Different w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/00
CPCH04W72/00
Inventor 常俊仁冯淑兰张兴炜
Owner HONOR DEVICE CO LTD
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