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A load balancing method and device in a carrier aggregation system

A technology of load balancing and carrier aggregation, applied in the field of communication, which can solve problems such as user service interruption, handover failure, and call drop

Active Publication Date: 2019-09-17
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a load balancing method and device in a carrier aggregation system, which is used to solve the problem that in the prior art, adopting the fast handover method for load balancing will lead to interruption of user services, and may even lead to call drop and handover failure The problem

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  • A load balancing method and device in a carrier aggregation system
  • A load balancing method and device in a carrier aggregation system
  • A load balancing method and device in a carrier aggregation system

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Embodiment 3

[0281] Embodiment 3. This embodiment is applied to scenarios with complete same coverage, such as image 3 As shown, two carrier aggregation networks composed of two frequency bands F1 and F2. F1 and F2 have the same bandwidth. Assume that Cell1 (F1) has an uplink load of 30% and a downlink load of 70%; Cell2 (F2) has an uplink load of 20% and a downlink load of 20%; assume that the spectral efficiencies of Cell1 (F1) and Cell2 (F2) are equal. Only 40% of the users in the network are terminals that support carrier aggregation, and the rest are user equipment that do not support carrier aggregation. Assume that the absolute load threshold that needs to be met for load balancing triggering is 50%; the relative load threshold that needs to be met for load balancing triggering is 20%; the high load threshold that needs to be met for load balancing triggering is 80%; take Cell1 (F1) as an example to illustrate this scenario The following load balancing process. Load balancing ca...

Embodiment 4

[0325] Embodiment 4: This embodiment is applied to the coverage scenario of concentric circles of large and small circles, and a two-carrier aggregation network composed of two frequency bands F1 and F2, such as Figure 4 shown. F1 and F2 have the same bandwidth. Let the uplink load of Cell1 (F1) be 80% and the downlink load be 70%; the uplink load of Cell2 (F2) be 20% and the downlink load be 20%; let the spectrum efficiency of Cell1 (F1) and Cell2 (F2) be equal. All users in the network are terminals that support carrier aggregation. Assume that the absolute load threshold that needs to be met for load balancing triggering is 50%; the relative load threshold that needs to be met for load balancing triggering is 20%; the high load threshold that needs to be met for load balancing triggering is 80%; take Cell1 (F1) as an example to illustrate this scenario The following load balancing process. Load balancing can be implemented according to the following methods and steps: ...

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Abstract

The invention discloses a load balancing method and a device in a carrier aggregation system, so as to solve the problem that when a quick switching method is adopted for load balancing in the prior art, the user service is caused to be interrupted. The method comprises steps: in each load balancing cycle, a source balancing cell in need of load balancing and a load balancing direction are determined, and from member carrier cells corresponding to the source balancing cell, at least one target balancing cell to which the load of the source balancing cell is balanced is determined; the first load amount which needs to be transferred to each target balancing cell by the source balancing cell in the load balancing direction is determined; and according to the first load amount corresponding to each target balancing cell, at least one piece of user equipment is selected from user equipment supporting load balancing direction carrier aggregation and with the source balancing cell as a PCell, and the load amount of the selected user equipment in the source balancing cell is transferred to an SCell of the selected user equipment.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a load balancing method and device in a carrier aggregation system. Background technique [0002] In order to increase the system transmission rate and meet the peak rate requirements of users, the carrier aggregation (Carrier Aggregation, CA) technology is introduced in the enhanced Long Term Evolution Advanced (LTE-A) system, that is, multiple small bandwidth The method of Component Carrier (CC for short) aggregation expands the system bandwidth into a larger system bandwidth. [0003] In the LTE-A CA system, a base station must be configured with multiple component carriers of different frequency bands to form networking scenarios such as complete coverage, concentric circle coverage, or non-concentric partial overlapping coverage. In these CA coverage scenarios, there are multiple component carriers, and each component carrier may have a terminal that do...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/08
Inventor 齐丙花刘蓉张超徐明宇
Owner DATANG MOBILE COMM EQUIP CO LTD