Power control method of TD-LTE (TD-SCDMA Long Term Evolution) system

A technology of power control and transmit power, applied in the field of broadband mobile communication systems, which can solve the problems of information exchange between cells cannot be reflected in time, real-time resource scheduling interference, and inter-cell interference is not well solved, etc.
CN101873686AInactive Publication Date: 2010-10-27SHANGHAI RES CENT FOR WIRELESS COMM
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
SHANGHAI RES CENT FOR WIRELESS COMM
Publication Date
2010-10-27
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a power control method of a TD-LTE system. In the method, a user forecasts the up interference of an adjacent base station on a corresponding cell by estimating the down channel of the adjacent base station by utilizing the channel reciprocity of the uplink and the downlink of the TD-LTE system; on the basis of interference forecast, the user can actively regulate transmitting power per se so as to reduce the interference to an adjacent cell. The invention does not need to change the current power control flow and signalling, has good compatibility, can effectively reduce intracell interference level and improves the cell edge user throughput and system throughput.
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Description

technical field

[0001] The present invention relates to a broadband mobile communication system, in particular to a TD-LTE (TD-SCDMA Long Term Evolution, referring to the long-term evolution of TD-SCDMA) system power control method. Background technique

[0002] OFDM / OFDMA (Orthogonal Frequency Division Multiplexing / Orthogonal Frequency Division Multiple Access) is the core transmission technology of the next-generation broadband mobile communication system and has higher spectral efficiency. In the 3GPP LTE standardization process, my country's leading TD-LTE (TD-SCDMA Long Term Evolution, refers to the long-term evolution of TD-SCDMA) standard is the evolution of TD-SCDMA, which will guarantee The healthy development of TD-SCDMA industry. However, the problem of inter-cell interference in the same-frequency networking of the TD-LTE system has not been well resolved, and the technical advantages based on the TDD duplex method (symmetry of the frequency response of the uplin...

Claims

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