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Mobility cell measurement method for long term evolution-advanced (LTE-A) system

A LTE-A and cell measurement technology, applied in the field of mobile communications, can solve the problems of long time-consuming mobility measurement and high power consumption, and achieve the effects of accelerating speed, reducing power consumption, and improving measurement signal performance

Inactive Publication Date: 2011-10-12
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, currently 3GPP has not determined the mobility measurement method for the LTE-A system. For the LTE-A system, due to the proposed carrier aggregation technology, the user terminal needs to measure more different frequency carriers. If the LTE system is extended In the mobility measurement method, the user terminals are measured one by one on the 6 RBs in the center of the inter-frequency carrier. Obviously, the mobility measurement takes longer and consumes more power.

Method used

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  • Mobility cell measurement method for long term evolution-advanced (LTE-A) system
  • Mobility cell measurement method for long term evolution-advanced (LTE-A) system
  • Mobility cell measurement method for long term evolution-advanced (LTE-A) system

Examples

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Effect test

Embodiment 1

[0077] Carrier aggregation adopts deployment strategy 1, that is, in addition to component carrier k, there are other M-1 component carriers with the same coverage, and these M component carriers correspond to antennas at the same location and use the same PCI. A certain UE is within the coverage area, and the component carrier k is configured as the primary component carrier (PCC) of the UE, that is, the cell determined by the PCC and the PCI is the serving cell of the UE.

[0078] According to the method of the invention:

[0079] The base stations to which the M component carriers belong transmit the PSS and SSS in a synchronous manner on the M component carriers, and the PSS and SSS sequences transmitted on the M component carriers are completely the same.

[0080] The serving cell base station of the UE sends the other M-1 component carrier information, that is, the component carrier information capable of performing carrier aggregation with the PCC, to the UE through hig...

Embodiment 2

[0092] Carrier aggregation adopts deployment strategy 2, that is, in addition to component carrier k, there are other M-1 component carriers. These M component carriers correspond to antennas in the same position and in the same direction, and use the same PCI, but these M The coverage areas of the cells covered by the component carriers are different. A certain UE is within the coverage of a cell of component carrier k, wherein component carrier k is configured as the primary component carrier (PCC) of the UE, that is, the cell determined by the PCC and the PCI is the serving cell of the UE.

[0093] According to the method of the invention:

[0094] The base stations to which the M component carriers belong transmit the PSS and SSS in a synchronous manner on the M component carriers, and the PSS and SSS sequences transmitted on the M component carriers are completely the same.

[0095] The serving cell base station of the UE sends the other M-1 component carrier information...

Embodiment 3

[0107] Carrier aggregation adopts deployment strategy 1 or 2. In addition to component carrier k, there are other M-1 component carriers whose coverage areas may be the same or different. The M component carriers correspond to antennas at the same position and in the same direction, but adopt different PCIs. A certain UE is within the coverage area, and component carrier k is configured as the PCC of the UE.

[0108] According to the method of the invention:

[0109] The base stations to which the M component carriers belong transmit the PSS and SSS in a synchronous manner on the M component carriers, and the PSS and SSS sequences transmitted on the M component carriers are different.

[0110] The serving cell base station of the UE sends the other M-1 component carrier information, that is, the component carrier information capable of performing carrier aggregation with the PCC, to the UE through high-layer signaling. In this way, the UE can know which component carriers ca...

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Abstract

The invention provides a mobility cell measurement method for a long term evolution-advanced (LTE-A) system. The method comprises the following steps of: A, performing inter-carrier synchronous transmission of a synchronization signal on more than two component carriers; B, transmitting information about the component carriers capable of realizing carrier aggregation with carriers of a serving cell in the more than two component carriers to user equipment in the serving cell by using high signaling; and C, transmitting mobility joint measurement information to the user equipment in the serving cell for the user equipment to determine the component carriers taking part in mobility joint measurement according to the information about the component carriers and the mobility joint measurement information transmitted by the step B, and performing the mobility joint measurement on the determined component carriers. By the method, the mobility measurement speed can be increased, and the power consumption of the user equipment can be reduced.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a mobility cell measurement method of an LTE-A system. Background technique [0002] In the existing Long Term Evolution (LTE) system, various system bandwidths can be supported: 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz and 20MHz. Regardless of the system bandwidth, the primary synchronization signal (PSS, Primary Synchronization Signal) and secondary synchronization signal (SSS, Secondary Synchronization Signal) used for mobility measurement are only in the 6 resource blocks (RB, Resource Block) of the entire system bandwidth center. Block) is transmitted on a bandwidth of about 1M. Correspondingly, when the user equipment performs mobility measurement for radio resource management, no matter how large the system bandwidth is, it will only perform cell identification on the PSS and SSS on the 6 resource blocks in the center of the system bandwidth during each measurement. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/00H04W56/00
CPCH04L5/001H04W24/10H04W56/00Y02D30/70
Inventor 孙程君
Owner BEIJING SAMSUNG TELECOM R&D CENT
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