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A dual connection communication method and device in a mobile communication system

A dual-connection, system-user technology, applied in wireless communication, electrical components, etc., can solve problems such as the inability to realize dynamic scheduling in time

Active Publication Date: 2019-01-18
HONOR DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In dual-connection communication, considering the delay of the backhaul link between the macro cell and the small cell, the uplink information for the two cells is sent to one cell, and dynamic scheduling cannot be realized in time.

Method used

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  • A dual connection communication method and device in a mobile communication system
  • A dual connection communication method and device in a mobile communication system
  • A dual connection communication method and device in a mobile communication system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] Embodiment 1 describes the flow of the method used in the user equipment. In this embodiment, cell 1 is a small cell, and the frame structure on carrier f1 is #2, cell 2 is a macro cell, and the frame structure on carrier f2 is #1, and the subframe index of cell 2 is shifted to the right relative to cell 1 up to 5 subframes namely:

[0102] Cell 1

D

S

U

D

D

D

S

U

D

D

Cell 2

D

S

U

U

D

D

S

U

U

D

[0103] The subframe 2 is marked in bold.

[0104] In step C11, determine the uplink subframe subset USF1_A{2} that cell 1 can occupy in the uplink subframe set USF1{2,7} of carrier f1 and determine the uplink reference frame structure #1 of cell 1 in carrier f1 and downlink reference frame structure #5. In step C12, determine the uplink subframe subset USF2_A{3, 7, 8} that cell 2 can occupy in the uplink subframe set USF2{2, 3, 7, 8} of carrier f2 and determine the Uplink reference frame structu...

Embodiment 2

[0107] Embodiment 2 is a network side device, which includes a first determination module, a second determination module, a third sending module and a fourth communication module, as shown in the attached figure 2 Device 100 is shown.

[0108] The first determination module 101: determine the uplink subframe subset USF1_A of the cell that can schedule the UE in the uplink subframe set USF1 of the carrier f1 and the uplink reference frame structure and downlink reference frame structure of the cell on the carrier f1

[0109] The second sending module 102: sending high layer or physical layer signaling to configure the USF1_A

[0110] The third communication module 103: communicate with the UE on the carrier f1, wherein the scheduling of PDSCH, uplink ACK / NACK and retransmission comply with the timing of the downlink reference frame structure of the carrier f1, the scheduling of PUSCH and the downlink ACK / NACK and retransmission comply with the timing of the uplink reference f...

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Abstract

The invention provides a method of carrying out time division multiplexing dual-connectivity communication on a time division duplex (TDD) mobile communication system. In one embodiment, the method comprises a step of applying a certain offset to sub-frame indexes of two cells, which are used for carrying out dual-connectivity communication on UE (User Equipment), so as to overlap uplink sub-frames of the two cells as little as possible. Through utilizing the technical scheme provided by the invention, the problem of compatibility of dual-connectivity communication of the TDD system is solved, and independent scheduling of a macro cell and a small cell is implemented as flexible as possible.

Description

technical field [0001] The present invention relates to a scheme for scheduling subframes in the technical field of mobile communication, in particular to a subframe scheduling scheme in a TDD LTE-Time Division Duplex LongTerm Evolution (TDD LTE-Time Division Duplex LongTerm Evolusion) system using Dual-Connectivity technology. A scheme for scheduling row subframes. Background technique [0002] The 3GPP-3rd Generation Partner Project (3GPP-3rd Generation Partner Project) defines the frame structure of the TDD-LTE system as follows, where D represents the downlink subframe, U represents the uplink subframe, and S represents the special subframe: [0003] Table 1: TDD LTE frame structure [0004] [0005] 3GPP further defines the parameter k of uplink subframe scheduling across subframes, as shown in Table 2. The meaning of k is: the DCI used for uplink scheduling in the downlink subframe n, and the scheduled subframe is located in the n+k subframe. It should be noted t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/12
Inventor 马莉
Owner HONOR DEVICE CO LTD