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Method, device and system for reconfiguring time reference cells

A time reference and reconfiguration technology, applied in the field of communication, can solve problems such as reconfiguration

Inactive Publication Date: 2013-07-17
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the related art, whether the UE needs to measure the radio link quality of the cell used as the time reference, and how the base station reconfigures the time reference cell of the non-Pcell TA group according to the radio link quality measured by the UE, the present invention provides a A measurement scheme for the radio link quality of the time reference cell and a reconfiguration scheme for the time reference cell to solve at least one of the above-mentioned problems

Method used

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  • Method, device and system for reconfiguring time reference cells
  • Method, device and system for reconfiguring time reference cells

Examples

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Embodiment 1

[0087] Figure 10 It is a flowchart of a method for reconfiguring a time reference cell according to Embodiment 1 of the present invention, as shown in Figure 10 As shown, the method may include the following steps (step S1002-step S1012):

[0088] Step S1002: The radio link quality of a certain non-Pcell reference cell of the UE degrades, and the UE performs restorative measurement on the radio link of the reference cell. If the measurement result fails to restore the radio link, the UE triggers the non-Pcell reference cell Wireless link failure process.

[0089] Step S1004: The UE sends a non-Pcell reference cell radio link quality report to the eNB, and the message includes the reference cell identity where radio link failure occurs, and the radio link quality parameters of all secondary cells in the TA group.

[0090] Step S1006: After receiving the radio link failure report message, the eNB selects a suitable secondary cell for the UE from all secondary cells according...

Embodiment 2

[0095] Figure 11 It is a flowchart of a method for reconfiguring a time reference cell according to Embodiment 2 of the present invention, as shown in Figure 11 As shown, the method may include the following steps (step S1102-step S1112):

[0096] Step S1102: The radio link quality of a certain non-Pcell reference cell of the UE degrades, and the UE performs restorative measurement on the radio link of the reference cell. If the measurement result fails to restore the radio link, the UE triggers the non-Pcell reference cell Wireless link failure process.

[0097] Step S1104: The UE sends a non-Pcell reference cell radio link quality report to the eNB, and the message includes the reference cell identity where radio link failure occurs, and the radio link quality parameters of all secondary cells in the TA group.

[0098] Step S1106: After receiving the radio link failure report message, the eNB selects a suitable secondary cell for the UE from all secondary cells according...

Embodiment 3

[0103] Figure 12 It is a flowchart of a method for reconfiguring a time reference cell according to Embodiment 3 of the present invention, as shown in Figure 12 As shown, the method may include the following steps (step S1202-step S1212):

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Abstract

The invention discloses a method, a device and a system for reconfiguring time reference cells. The method includes that a primary cell (Pcell) base station receives a wireless link quality report of a non-Pcell time reference cell sent by user equipment (UE), wherein the wireless link quality report contains wireless link quality parameters of secondary cells (Scells) in a time advance (TA) group, and the non-Pcell time reference cell with the current wireless link quality not reaching preset recovery conditions is located in the TA group; a Pcell base station selects new Scells to serve as the time reference cell of the TA group according to the received wireless link quality report; and the Pcell base station transmits a wireless link control reconfiguration message to the UE, wherein information carried by the wireless link control reconfiguration message contains an identification of the selected time reference cell. According to the method, the device and the system, reconfiguration of non-Pcell time reference cells of the TA group for the UE according to the wireless link quality measured by the UE is achieved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, device and system for reconfiguring a time reference cell. Background technique [0002] Carrier aggregation is a core function in the enhanced version of the LTE system. By using several carriers or cells in parallel, the uplink and downlink rates of user equipment (User Equipment, UE for short) are greatly improved. The cell aggregated by the UE with carrier aggregation capability is divided into a Primary Cell (Pcell for short) and several Secondary Cells (Scell ​​for short), and the Primary Cell is responsible for Radio Resource Control (RRC for short). ) connection establishment / re-establishment / handover, a serving cell provides Non-Access Stratum (NonAccess Stratum, NAS for short) mobility information (for example, Tracking Area Indicator (Tracking Area Indicator, TAI for short)), and RRC connection re-establishment Set-up / handover, the main cell provides a saf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/08H04W72/04
Inventor 王坚
Owner ZTE CORP
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