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Different-uplink/downlink-configuration carrier aggregation overlapped sub-frame transmission method and device

A technology of downlink configuration and carrier aggregation, applied in the field of communication, can solve the problem of overlapping subframe directions without a clear plan and so on

Active Publication Date: 2013-11-13
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Therefore, there is no clear solution on how to determine the direction of overlapping subframes when TDD uplink / downlink configurations with 10ms and 5ms downlink-to-uplink switching point periods are used for carrier aggregation.

Method used

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  • Different-uplink/downlink-configuration carrier aggregation overlapped sub-frame transmission method and device
  • Different-uplink/downlink-configuration carrier aggregation overlapped sub-frame transmission method and device
  • Different-uplink/downlink-configuration carrier aggregation overlapped sub-frame transmission method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] The transmission direction of the first type of overlapping subframes is determined according to the special subframe structure, and the transmission direction of the second type of overlapping subframes is determined according to a preset manner.

[0080] That is, it is determined that the transmission direction of the first type of overlapping subframe is to transmit according to the special subframe structure, the Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) symbol corresponding to DwPTS is the downlink transmission direction, and the single carrier frequency corresponding to UpPTS The SC-FDMA, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol is the uplink transmission direction.

[0081] For the carrier whose downlink-to-uplink switching period is 10 ms in this subframe, no downlink transmission is performed in this subframe, or only downlink transmission is performed on the first A OFDM symbols, wher...

Embodiment 2

[0089] The transmission direction of the first type of overlapping subframe is determined according to the special subframe structure, and the transmission direction of the second type of overlapping subframe is determined according to the transmission direction of the first type of overlapping subframe.

[0090] That is, the transmission direction of the first type of overlapping subframes is determined to be transmission according to the special subframe structure, and the specific determination method is the same as that in Embodiment 1, which will not be repeated here.

[0091] When determining the transmission direction of the second type of overlapping subframe, it is determined according to the determined transmission direction of the first type of overlapping subframe. Specifically, when the transmission direction of the first type of overlapping subframe is to transmit according to the special subframe structure, The transmission direction of the second type of overlap...

Embodiment 3

[0095] The transmission direction of the first type of overlapping subframe is determined according to the special subframe structure, and the transmission direction of the second type of overlapping subframe is determined according to the transmission direction of at least one previous adjacent overlapping subframe.

[0096] That is, the transmission direction of the first type of overlapping subframes is determined to be transmission according to the special subframe structure, and the specific determination method is the same as that in Embodiment 1, which will not be repeated here.

[0097] When determining the transmission direction of the second type of overlapping subframe, it is determined according to the transmission direction of at least one previous adjacent overlapping subframe. Specifically, the following methods can be used:

[0098] When the transmission direction of the previous adjacent overlapping subframe of the current overlapping subframe is downlink:

[...

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Abstract

The invention discloses a different-uplink / downlink-configuration carrier aggregation overlapped sub-frame transmission method and device, and relates to the communication technology. The different-uplink / downlink-configuration carrier aggregation overlapped sub-frame transmission method includes the steps of determining the transmission direction of a first class of overlapped sub-frames according to a special sub-frame structure, and determining the transmission direction of a second class of overlapped sub-frames according to the transmission direction of the first class of overlapped sub-frames or the transmission direction of at least one prior adjacent overlapped sub-frame or a preset manner, or determining the transmission direction of the first class of overlapped sub-frames according to the preset manner, and determining the transmission direction of the second class of overlapped sub-frames according to the transmission direction of the first class of overlapped sub-frames or the transmission direction of the at least one prior adjacent overlapped sub-frame, or determining the transmission direction of the second class of overlapped sub-frames according to the transmission direction of at least one inferior adjacent overlapped sub-frame or the preset manner, and determining the transmission direction of the first class of overlapped sub-frames according to the transmission direction of the at least one inferior adjacent overlapped sub-frame. The determination on the transmission directions of the overlapped sub-frames is achieved.

Description

technical field [0001] The present invention relates to communication technology, in particular to a method and device for overlapping subframe transmission of carrier aggregation with different uplink / downlink configurations. Background technique [0002] In the long-term evolution enhanced (LTE-A, Long Term Evolution–Advanced) version 11 (Rel-11, Release-11) carrier aggregation (CA, CarrierAggregation) system, support the use of different time division duplex (TDD, Time Division Duplex) Carrier aggregation for uplink / downlink configuration to avoid mutual interference between carriers (or cells) in different frequency bands (Inter-band) and TDD systems on adjacent frequency points. [0003] In the LTE-A system, the peak rate of the system is greatly improved compared with the Long Term Evolution (LTE, Long Term Evolution) system, and it is required to reach 1Gbps in the downlink and 500Mbps in the uplink. Therefore, the LTE-A system needs to expand the available bandwidth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L1/06H04L27/26
Inventor 高雪娟林亚男沈祖康
Owner DATANG MOBILE COMM EQUIP CO LTD