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Uplink data transmission method, evolved Node Base (eNB) and user equipment (UE)

A data transmission method and technology of user equipment, applied in the direction of digital transmission system, multiple use of transmission path, transmission system, etc.

Inactive Publication Date: 2014-03-26
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this scenario, the existing solution for UE to transmit data to eNB will not work on the new carrier, that is, the new carrier cannot realize uplink synchronization and subsequent uplink data transmission through the existing solution

Method used

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  • Uplink data transmission method, evolved Node Base (eNB) and user equipment (UE)
  • Uplink data transmission method, evolved Node Base (eNB) and user equipment (UE)
  • Uplink data transmission method, evolved Node Base (eNB) and user equipment (UE)

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Embodiment Construction

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] image 3 The flow chart of the method for UE to transmit uplink data to eNB provided by the embodiment of the present invention, as shown in image 3 As shown, the specific steps are as follows:

[0037] Step 301: The eNB sends an uplink synchronization indication signaling to the UE. The signaling carries the identifier of the first carrier for which the UE needs to perform uplink synchronization, and also carries the subframe number used by the UE to send the uplink synchronization reference signal and the subframe number used by the subframe. The location and size information of the time-frequency resource.

[0038] The eNB may periodically send uplink synchronization indication signaling to the UE.

[0039] The uplink synchronization indication signaling may be radio resource control (RRC, Radio Resource Control) protoco...

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Abstract

The invention discloses an uplink data transmission method, an evolved Node Base (eNB) and user equipment (UE). The method includes the following steps: the eNB sends an uplink synchronization indication signal to the UE, and the signal indicates that the UE needs to carry out uplink synchronization on a first carrier; the eNB receives an uplink synchronization reference signal sent by the UE on the first carrier, calculates a TA (Time Advance) value needed for uplink data transmission of the UE on the first carrier according to the signal, and sends the TA value to the UE through a second carrier; the eNB sends uplink resource allocation information of the first carrier to the UE through a third carrier, and the information includes a subframe number of the first carrier, as well as the location and size information of a time-frequency resource for uplink transmission in a subframe corresponding to the first carrier, so that the UE can transmit uplink data to the eNB through the first carrier. The invention achieves the uplink synchronization and data transmission of a carrier without control information.

Description

technical field [0001] The present invention relates to the technical field of data communication, in particular to an uplink data transmission method, an evolved base station (eNB, evolved Node Base) and a user equipment (UE, User Equipment). Background technique [0002] The uplink synchronization of the Long Term Evolution (LTE, Long Term Evolution) system means that all terminal signals arriving at the same base station antenna must be synchronized in the time domain, that is, arrive at the same time. Since the distances from different terminals to the base station are different, only by adjusting the sending time can the terminal achieve data arrival at the base station at the same time. [0003] In the existing LTE system, the procedure for the UE to transmit data to the eNB is as follows: [0004] First of all, if the UE is in the uplink out-of-sync state on a carrier A, it needs to perform uplink synchronization. The procedure for UE to perform uplink synchronizatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04W56/00H04W88/02H04W88/08
CPCH04L5/001H04L5/0094H04L27/2657H04L5/0051
Inventor 胡南江小威王晓云
Owner CHINA MOBILE COMM GRP CO LTD