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Reconfiguration method and device for auxiliary serving cell in multi-carrier communication system

A secondary serving cell and multi-carrier communication technology, applied in the communication field, can solve problems such as uplink interference and achieve the effect of avoiding uplink interference

Inactive Publication Date: 2018-07-06
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a reconfiguration method and device for a secondary serving cell in a multi-carrier communication system to at least solve the problem in the related art that sending uplink signals or data on the serving cell before the time reference and timing advance take effect will cause uplink interference problem

Method used

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  • Reconfiguration method and device for auxiliary serving cell in multi-carrier communication system
  • Reconfiguration method and device for auxiliary serving cell in multi-carrier communication system
  • Reconfiguration method and device for auxiliary serving cell in multi-carrier communication system

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Embodiment 1

[0050] image 3 It is an interactive flow chart of the reconfiguration method of the secondary serving cell in the multi-carrier communication system according to the preferred embodiment 1 of the present invention, as shown in image 3 As shown, the following steps S302 to S314 are included.

[0051] In step S302, the UE initiates an RRC connection on CC1, and the base station configures CC2, CC3, and CC4 information and grouping information to the UE in an RRC connection reconfiguration message. CC1 is the primary serving cell, forming group 1, and CC2-CC4 are secondary serving cells, forming group 2.

[0052] In step S304, the base station sends a secondary cell activation control element to activate CC2-CC4 when the UE is in the RRC connection state. Since CC2-CC4 belong to group 2, CC2-CC4 are in an asynchronous state after activation.

[0053] Step S306, after CC2 is activated, the base station sends a PDCCH order message to instruct CC2 to perform a random access proc...

Embodiment 2

[0059] Figure 4 It is an interactive flow chart of the reconfiguration method of the secondary serving cell in the multi-carrier communication system according to the second preferred embodiment of the present invention, as shown in Figure 4 As shown, the following steps S402 to S418 are included.

[0060] In step S402, the UE initiates an RRC connection on CC1, and the base station configures CC2, CC3, and CC4 information and grouping information to the UE in an RRC connection reconfiguration message. CC1 is the primary serving cell, forming group 1, and CC2-CC4 are secondary serving cells, forming group 2.

[0061] In step S404, the base station sends a secondary cell activation control element to activate CC2-CC4 when the UE is in the RRC connection state. Since CC2-CC4 belong to group 2, CC2-CC4 are in a synchronous state after activation.

[0062] Step S406, after CC2 is activated, the base station sends a PDCCH order message to instruct CC2 to perform a random access...

Embodiment 3

[0070] Figure 5 It is an interactive flow chart of the reconfiguration method of the secondary serving cell in the multi-carrier communication system according to the third preferred embodiment of the present invention, as shown in Figure 5 As shown, the following steps S502 to S514 are included.

[0071] In step S502, the UE initiates an RRC connection on CC1, and the base station configures CC2, CC3, and CC4 information and grouping information to the UE in an RRC connection reconfiguration message. CC1 is the primary serving cell, CC2 and CC1 are grouped in the same serving cell to form group 1, and CC3 and CC4 are secondary serving cells to form group 2.

[0072] Step S504, the base station sends a secondary cell activation control element to activate CC2~CC4 when the UE is in the RRC connection state, CC2 and CC1 are in the same group, and after CC2 is activated, they are in a synchronized state; CC3 and CC4 are in group 2, and after activation, they are in an uplink a...

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Abstract

The present invention discloses a method and device for reconfiguring a secondary serving cell in a multi-carrier communication system. The method includes: user equipment receives a reconfiguration message from a base station, wherein the reconfiguration message includes reconfiguring the secondary serving cell to a service Cell grouping information; user equipment clears all configured uplink resources in the secondary serving cell, stops uplink data on the secondary serving cell, and stops sending SRS; user equipment modifies secondary serving cell to serving cell grouping; user equipment applies service Timing reference and timing advance for cell grouping. The present invention can avoid the above-mentioned uplink interference by clearing all configured uplink resources in the secondary serving cell and stopping sending uplink data and SRS on the secondary serving cell.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a reconfiguration method and device for a secondary serving cell in a multi-carrier communication system. Background technique [0002] Long Term Evolution Advanced (LTE-Advanced for short) introduces many new technologies to meet the basic requirements of International Mobile Telecommunications-Advanced (IMT-Advanced for short), the most important of which is One technology is carrier aggregation. [0003] Due to the current shortage of wireless spectrum resources, and IMT-Advanced requires higher peak rate indicators (100Mbps under high mobility and 1Gbps under low mobility), the maximum bandwidth of 20MHz in the current LTE standard cannot meet the requirements of IMT-Advanced. Advanced requires, so it needs to be expanded to a higher bandwidth, such as 40MHz, 60MHz, or even higher. One of the methods to increase the bandwidth and peak rate is to expand the frequency domai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/08H04W72/54
Inventor 万璐陈中明
Owner ZTE CORP
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