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A kind of uplink power control method, terminal and base station

A power control and terminal technology, applied in the field of communication, can solve problems such as increasing interference, affecting the uplink transmission performance of terminals and systems, and failing to guarantee SINR requirements.

Active Publication Date: 2018-06-19
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the cell is performing uplink transmission and there are other base stations performing downlink transmission in a certain area around the base station of the cell, the interference to the uplink transmission of the terminals in the cell will obviously increase and the change will be large. If the terminal continues to use the current The power adjustment mechanism in the existing technology adjusts the uplink transmission power according to the TPC command configured by the base station, which cannot guarantee the SINR requirement of the uplink transmission, thus affecting the uplink transmission performance of the terminal and the system
That is to say, using the power adjustment mechanism in the prior art, the terminal cannot ensure that it adjusts the uplink transmission power to a more appropriate power value in the uplink subframe, so that the uplink transmission performance of the terminal and the system cannot be guaranteed.

Method used

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  • A kind of uplink power control method, terminal and base station
  • A kind of uplink power control method, terminal and base station
  • A kind of uplink power control method, terminal and base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] This embodiment describes the processing performed by the terminal in an uplink power control method, such as figure 1 shown, including the following steps:

[0093] Step 101, the terminal determines the uplink transmit power adjustment amount on subframes belonging to different subframe groups;

[0094] The above subframe group includes at least a first subframe group and a second subframe group, wherein the division of the first subframe group and the second subframe group can be in the following manner: the first subframe group is configured for uplink transmission by the current base station Subframes and other base stations whose distance from the current base station is smaller than the preset value are also configured as subframes for uplink transmission subframes, and the second subframe group is other base stations configured as uplink transmission subframes by the current base station and whose distance from the current base station is smaller than the preset ...

Embodiment 2

[0129] This embodiment describes the processing performed by the base station in an uplink power control method, such as image 3 shown, including the following steps:

[0130] Step 301, the base station determines subframe group information;

[0131] The above subframe group information is used for the terminal to determine the uplink transmit power adjustment amount on subframes belonging to different subframe groups;

[0132] The foregoing subframe group includes at least a first subframe group and a second subframe group, and the base station may determine the first subframe group and the second subframe group in the following manner: the base station determines that the base station is configured as a subframe for uplink transmission and Other base stations whose distance from the base station is less than a preset value are also configured as subframes for uplink transmission subframes belonging to the first subframe group, and the base station determines that the base ...

application example 1

[0150] Such as Figure 4 As shown, it is assumed that the base station adopts TDD uplink and downlink configuration 0 in Table 1.

[0151] In this example, the base station determines that subframes 2 and 7 belong to the first subframe group, and subframes 3, 4, 8, and 9 belong to the second subframe group. The base station divides the first subframe group and the second subframe group in the following manner frame group:

[0152] The base station obtains the TDD uplink and downlink configuration information of other base stations whose distance is less than the preset value, and judges that subframes 2 and 7 in the TDD uplink and downlink configurations of these base stations are both uplink transmission subframes, and subframes 3, 4, 8, 9, there is one or several base stations that configure it as a downlink transmission subframe, then the base station determines that 2 and 7 belong to the first subframe group, and subframes 3, 4, 8, and 9 belong to the second subframe grou...

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Abstract

The embodiments of the present invention disclose an uplink power control method, a terminal and a base station, which can adjust or determine uplink transmission power of a terminal on subframes which belong to different subframe groups respectively. The method includes: a base station determining subframe group information, the subframe group information being used by a terminal to determine uplink transmission power adjustment amounts on subframes which belong to different subframe groups; and the base station transmitting the subframe group information to the terminal. A terminal determines uplink transmission power adjustment amounts on subframes which belong to different subframe groups, and determines uplink transmission power on corresponding subframes according to the determined uplink transmission power adjustment amounts on the subframes which belong to the different subframe groups.

Description

technical field [0001] The present invention relates to the communication field, in particular to an uplink power control method, a terminal and a base station. Background technique [0002] The uplink and downlink configuration methods of the Long Term Evolution (referred to as LTE) system Time Division Duplex (referred to as TDD) mode are shown in Table 1, where D indicates that the subframe is used for downlink transmission, and U indicates the subframe For uplink transmission, S represents a special subframe and includes three special time slots, namely, downlink pilot time slot (DownlinkPilot Time Slot, referred to as DwPTS, used for downlink transmission), guard period (Guard Period, referred to as GP) and Uplink Pilot Time Slot (Uplink Pilot Time Slot, UpPTS for short, used for uplink transmission). In the current actual system, the uplink and downlink configuration index will be notified to the terminal through a broadcast message. [0003] Table 1 Schematic diagra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/14H04W52/18H04W52/54
CPCH04W52/146H04W52/10H04W52/221H04W52/242
Inventor 李卫敏李儒岳任璐郝鹏张文峰
Owner ZTE CORP