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Carrier management method and system in carrier aggregation system

A carrier aggregation and carrier management technology, applied in transmission systems, digital transmission systems, network traffic/resource management, etc., can solve unspecified dependencies, uplink carrier and downlink carrier dependency ambiguity, and affect user equipment communication quality, etc. problem, to achieve the effect of ensuring communication quality

Active Publication Date: 2011-08-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In version 10 of the FDD system, how to determine the dependency relationship between the carriers configured by the user equipment is not given. In practice, it will inevitably lead to ambiguity in the dependence between the uplink carrier and the downlink carrier, thereby affecting the communication quality of the user equipment.

Method used

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  • Carrier management method and system in carrier aggregation system
  • Carrier management method and system in carrier aggregation system
  • Carrier management method and system in carrier aggregation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] When the user equipment initially accesses the cell, related equipment on the network side (control equipment such as base station eNodeB, etc.) configures the first uplink carrier and the first downlink carrier for the user equipment through a system broadcast message, and the default is between the uplink and downlink carriers. There is a corresponding relationship, that is, a mutual dependence relationship. The dependency relationship in the present invention refers to the carrier feedback information of the sending partner between the uplink and downlink carriers having the dependency relationship, such as carrier configuration information and the like.

Embodiment 2

[0067] Such as figure 1 As shown, when the related equipment on the network side configures an uplink component carrier (UL CC1) for the user equipment through RRC signaling, the current component carrier configured by the user equipment is shown in the dotted box. repeat. The relevant equipment on the network side specifies the dependent downlink component carrier for the uplink component carrier in the RRC signaling. The dependent downlink component carrier may be the configured downlink component carrier in the user equipment, or it may be the current component carrier in the RRC signaling. The downlink component carrier to be configured. The related device on the network side may also allocate downlink feedback resources for the configured uplink component carrier in the RRC signaling, and the feedback resource is located on the downlink component carrier specified by the network side and having a dependency relationship with the configured uplink component carrier. Feed...

Embodiment 3

[0071] Such as figure 2 As shown, when the relevant equipment on the network side configures an uplink component carrier (UL CC1) for the user equipment through RRC signaling, the relevant equipment on the network side does not specify the dependent downlink component carrier for the uplink component carrier in the RRC signaling. The downlink component carrier on which the uplink component carrier depends is dynamically specified during resource scheduling: the downlink component carrier where the L1 / L2 signaling of the uplink component carrier is scheduled is used as the downlink component carrier on which the configured uplink component carrier depends.

[0072] When receiving the RRC signaling, the user equipment configures the uplink component carrier, but does not configure the dependency relationship between the uplink component carrier and the dependent downlink component carrier, nor configures the feedback resource of the uplink component carrier; When the relevant r...

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Abstract

The invention discloses a carrier management method in a carrier aggregation system, which comprises the steps as follows: when the component carriers configured to user equipment are determined to be updated by a network side, the network side determines a corresponding relationship of the updated component carriers, and informs the user equipment of the corresponding relationship. The invention also discloses a carrier management system in the carrier aggregation system, which comprises a first determining unit, a second determining unit, and an informing unit, wherein the first determining unit is used for triggering the second determining unit when the component carriers configured to the user equipment are determined to be updated; the second determining unit is used for determining the corresponding relationship of the updated component carriers; and the informing unit is used for informing the user equipment of the corresponding relationship. The technical scheme is simple and practical.

Description

technical field [0001] The present invention relates to a management technology of component carriers in a carrier aggregation system, and in particular to a carrier management method for determining dependencies between component carriers of user equipment (UE, User Equipment) in a carrier aggregation system. Background technique [0002] Release 8 of the Frequency Division Duplex (FDD, Frequency Division Duplex) system in the Long Term Evolution (LTE, Long Term Evolution) system is a single-carrier system. In this system, there is only one pair of uplink carrier and downlink carrier, so the uplink carrier needs The downlink carrier is unique, and the uplink carrier required by the downlink carrier is also unique. By default, there is a default dependency between the two. Version 10 of the FDD system in the long-term evolution system, that is, the advanced long-term evolution system, is a multi-carrier system. Multiple uplink carriers and multiple downlink carriers are run...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/16H04W72/04
CPCH04L5/001H04L5/0096H04W72/042H04W72/23
Inventor 王坚张健王冠宙张银成
Owner ZTE CORP
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