A carrier aggregation configuration method and device

A technology of carrier aggregation and configuration method, which is applied to the separation device of transmission path, error prevention/detection using return channel, digital transmission system, etc., and can solve the problems of uncertain subframe type of mixed subframe, confusion of HARQ timing relationship, etc.

Active Publication Date: 2011-11-30
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] The technical problem to be solved by the present invention is to provide a carrier aggregation data configuration method and device, aiming at the requirement of configuring different uplink and downlink ratios for the component carriers of the TDD carrier aggregation system, and solving the uncertainty of the subframe type of the mixed subframe and the timing relationship with HARQ confusing question

Method used

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  • A carrier aggregation configuration method and device
  • A carrier aggregation configuration method and device
  • A carrier aggregation configuration method and device

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specific Embodiment 1

[0094] Specific embodiment 1 describes an embodiment in which a hybrid subframe supports unidirectional transmission and sets a transmission mode with reference to the subframe type of the subframe at the subframe time where the hybrid subframe is located on the primary component carrier.

[0095] Such as Figure 4 As shown, there are component carrier 1, component carrier 2, component carrier 3, and component carrier 4 in the system. The four component carriers are configured with different uplink and downlink ratios. The configuration of component carrier 1 is the uplink and downlink ratio configuration 0 in Table 1. , component carrier 2 is configured with uplink and downlink ratio configuration 1 in Table 1, component carrier 3 is configured with uplink and downlink ratio configuration 3 in Table 1, and component carrier 4 is configured with uplink and downlink ratio configuration 4 in Table 1.

[0096] based on Figure 4 Given the component carrier and its uplink and dow...

specific Embodiment 2

[0101] The second specific embodiment describes the implementation of hybrid subframes that support unidirectional transmission and fixedly allows the downlink transmission of hybrid subframes, and adopts the timing relationship between the uplink HARQ and downlink HARQ of the scheduled carrier in the first method to control the cross-carrier scheduled components The principle of carrier data scheduling.

[0102] based on Figure 5 Given the component carrier and its uplink and downlink ratio configuration, the base station (eNodeB) configures carrier aggregation for LTE-A TDD terminals with carrier aggregation capability:

[0103] The base station configures the corresponding uplink-downlink conversion period according to the uplink and downlink ratio of the component carrier, divides the component carrier 1 and the component carrier 2 with a 5ms conversion period into a group (marked as carrier aggregation group A), subframes 4 and 9 in group A are "Mixed Subframes".

[01...

specific Embodiment 3

[0110] The third specific embodiment describes an implementation mode in which mixed subframes support unidirectional transmission and fixedly allows downlink transmission of mixed subframes, and the scheduling modes of mode 2, mode 3 and mode 4 are adopted.

[0111] based on Figure 5 Given the component carrier and its uplink and downlink ratio configuration, the base station (eNodeB) configures carrier aggregation for LTE-A TDD terminals with carrier aggregation capability:

[0112] The base station configures the corresponding uplink-downlink conversion period according to the uplink and downlink ratio of the component carrier, divides the component carrier 1 and the component carrier 2 with a 5ms conversion period into a group (marked as carrier aggregation group A), subframes 4 and 9 in group A are "Mixed Subframes".

[0113]The base station can configure group A to terminals with carrier aggregation capabilities to increase the data transmission rate, and designate a c...

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Abstract

A carrier aggregation configuration method and device. The method comprises: a base station configuring a carrier aggregation group for a terminal, and setting configuration manners of different subframe upstream/downstream ratios for wireless frames of each component carrier in the carrier aggregation group. A method 1 is adopted: in the case that a hybrid subframe supports unidirectional transmission, the base station and the terminal agree upon a subframe type of a subframe at a subframe time of a hybrid subframe on a main component carrier as a reference subframe type, the transmission capability on the main component carrier and the sub-component carrier are allowed for a subframe with the subframe type at the subframe time of the hybrid subframe being the same as the reference subframe type, and the transmission capability on the sub-component carrier is forbidden for a subframe with the subframe type at the subframe time of the hybrid subframe being different from the reference subframe type. The solution solves the problems of uncertain subframe types of hybrid subframes and disorderly timing relations of hybrid automatic repeat requests, thereby meeting the demands for component carrier aggregation of different upstream/downstream ratios.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a carrier aggregation configuration method and device. Background technique [0002] There are two frame structures in the Long Term Evolution (LTE) system formulated by The 3rd Generation Partnership Project (3GPP) in the field of communication. The frame structure type 1 is applicable to full-duplex and half-duplex. Frequency Division Duplex (FDD for short), frame structure type 2 is suitable for Time Division Duplex (TDD for short). figure 1 The frame structure type 2 of LTE TDD mode is shown, a radio frame (radio frame) with a length of 10 ms is composed of two half frames (half frame) with a length of 5 ms, and a half frame includes five subframes with a length of 1 ms ( subframe). Subframe i is defined as two time slots 2i and 2i+1 with a length of 0.5 ms. For the standard (Normal) cyclic prefix (Cyclic Prefix, CP for short), a slot contains 7 symbols with a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04W72/12
CPCH04W72/12H04L5/001H04L1/1812H04L1/1621
Inventor 戴博喻斌郝鹏
Owner ZTE CORP
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