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Uplink power control information transmission method, uplink power control method and device

A technology of power control information and transmission method, which is applied in power management, transmission control/equalization, wireless communication, etc., can solve the problem of inaccurate uplink power control, achieve increased usage, accurate control of uplink transmission power, and improve Effect of Frequency Resource Utilization

Active Publication Date: 2012-09-05
DATANG MOBILE COMM EQUIP CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

However, due to the influence of various factors, the uplink power parameters of each PRB are not consistent. Therefore, according to the current method, the transmit power of the UE on different PRBs will be completely the same, resulting in inaccurate control of the uplink power.

Method used

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  • Uplink power control information transmission method, uplink power control method and device
  • Uplink power control information transmission method, uplink power control method and device
  • Uplink power control information transmission method, uplink power control method and device

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Embodiment Construction

[0047]In the evolution solution of the TDD system, the transmission of the data part can adopt the OFDM method. In order to realize downlink synchronization in the OFDM mode, a downlink synchronization channel (SCH, Synchronization Channel) is introduced. SCH includes P-SCH and S-SCH (Secondary Synchronization Channel). The primary synchronization signal sent by the network side in each cell is the same, but the secondary synchronization signal sent in each cell is different.

[0048] figure 2 It shows that in the long-term evolution scheme, only a limited number of subcarriers in the center of the frequency band are used to send P-SCH in DwPTS, and the shaded part in the figure indicates the subcarriers used to send P-SCH. Wherein, the limited subcarriers may be called dedicated frequency resources. When the system bandwidth is relatively large, there will be a large number of remaining frequency resources except dedicated frequency resources.

[0049] In the long-term e...

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Abstract

The invention discloses a transmission method of up power control information, which comprises the following steps: frequency resources used for sending the up power control information in a DwPTS is determined; configuration information including resources used for sending the up power control information is informed to a UE in a cell, the frequency resources determined in the DwPTS sends the uppower control information. The up power control information is sent in the DwPTS, the frequency resource utilization of the DwPTS is improved, the purpose of the DwPTS is increased, and any influenceon the data transmission speed of the conventional time slot does not exist. In addition, the method sending the up power control information in the DwPTS matches with the prior method sending the uppower control information, thereby better implementary effect is achieved. The invention also discloses a transmission device of the up power control information, and an up power control method and an up power control device, and the up transmission power can be more accurately controlled by the UE through adopting the method or the device.

Description

technical field [0001] The present invention relates to the long-term evolution technology of the TDD (Time Division Duplex) system, in particular to a method and device for transmitting uplink power control information in the long-term evolution technology of the TDD system, and the corresponding uplink power control method and device. Background technique [0002] At present, the 3GPP (Third Generation Partnership Project) organization has begun to carry out long-term evolution of its existing system specifications. Among the many physical layer transmission technologies, OFDM (Orthogonal Frequency Division Multiplexing) technology has become the first choice in all downlink solutions due to its high spectrum utilization and low processing complexity. [0003] OFDM technology is essentially a multi-carrier modulation communication technology. Its basic principle is to decompose a high-rate data stream into several low-rate data streams and transmit them simultaneously on a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/005H04W52/14
Inventor 蒋海林唐海房家奕鲍炜
Owner DATANG MOBILE COMM EQUIP CO LTD
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