Control method, apparatus and system of uplink power

Abstract

The invention discloses a control method, an apparatus and a system of uplink power, wherein the method comprises that: a terminal-side receives downlink reference signals of all coordinated base stations and obtains corresponding path loss information of all the coordinated base stations; the terminal side performs weighted processing of the corresponding path loss information of all the coordinated base stations; and the terminal side calculates uplink transmitted power by taking the results after being weighted processed as a path loss factor controlled by the uplink power. The control method, the apparatus and the system of uplink power in the invention can guarantee the terminal data to be better received by the coordinated base station clusters and realize satisfying the requirement of the uplink power of a coordinated multiple point system, because the path loss weighted values from the terminal side to each coordinated base station are synthetically considered.

Description

technical field [0001] The present invention relates to wireless communication technology in the field of communication, in particular to an uplink power control method, device and system. Background technique [0002] figure 1 is a schematic diagram of a traditional non-cooperative system, such as figure 1 As shown, the serving base station of user 1 is base station 1, the serving base station of user 2 is base station 2, and the serving base station of user 3 is base station 3. The uplink signals transmitted by user 1, user 2, and user 3 can all be received by base station 1, base station 2, and base station 3 at the same time. [0003] The current uplink power control formula is: [0004] P(i)=min{P CMAX , 10log 10 (M(i))+P 0 +α·PL+Δ TF (i)+f(i)} Formula 1 [0005] In formula 1, i represents the subframe number; P CMAX is the maximum transmit power on the terminal side; M(i) is the number of resource blocks (Resource Block, RB for short) allocated to the terminal...

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Problems solved by technology

[0017] In the process of realizing the present invention, the inventor found that the uplink power control method of the non-cooperative system in the prior art cannot meet the requirements of the CoMP system for uplink transmission power. For example, if the existing power control method is still used, other coordinated base stations may not be able to Correctly receive terminal data and other issues

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