Method and network side network element for improving downlink transmit power and storage medium

Patent metadata

Field	Value
Publication number	US-9986510-B2
Application number	US-201415118488-A
Country	US
Kind code	B2
Filing date	Sep 24, 2014
Priority date	Feb 25, 2014
Publication date	May 29, 2018
Grant date	May 29, 2018

Abstract

The embodiment of the present document discloses a method for improving downlink transmission power. The method includes: when a network side network element determines that a downlink subframe in a radio frame is an almost blank subframe, assigning a maximum value among numerical values corresponding to a user level parameter to the user level parameter, and assigning a maximum value among numerical values corresponding to a cell level parameter to the cell level parameter; and determining downlink transmission power according to the user level parameter value and the cell level parameter value. The embodiment of the present document further discloses a network side network element for improving downlink transmission power and a storage medium.

First claim

What is claimed is:

1. A method for improving downlink transmission power, comprising:
when a network side network element determines that a downlink subframe in a radio frame is an almost blank subframe, setting a user level parameter with a maximum value among numerical values corresponding to the user level parameter, and setting a cell level parameter with a maximum value among numerical values corresponding to the cell level parameter; and
determining downlink transmission power according to the user level parameter value and the cell level parameter value;
after determining the downlink transmission power according to the user level parameter value and the cell level parameter value, the method further comprises:
the network side network element determining whether the downlink transmission power is greater than radio-frequency maximum power of the network side network element, and if the downlink transmission power is greater than the radio-frequency maximum power of the network side network element, assigning a secondary maximum value among the numerical values corresponding to the user level parameter to the user level parameter, and assigning a secondary maximum value among the numerical values corresponding to the cell level parameter to the cell level parameter;
determining the downlink transmission power again according to the user level parameter value and the cell level parameter value; and
sequentially cycling until the determined downlink transmission power is less than or equal to the radio-frequency maximum power of the network side network element.

2. The method according to claim 1 , wherein determining the downlink transmission power according to the user level parameter value and the cell level parameter value comprises:
Determining p A according to the user level parameter value, wherein p A is a ratio of subcarrier power corresponding to a data section in an orthogonal frequency division multiplexing symbol not containing pilot to subcarrier power corresponding to a pilot section; determining p B according to the cell level parameter value, wherein p B is a ratio of subcarrier power corresponding to a data section in an orthogonal frequency division multiplexing symbol containing pilot to subcarrier power corresponding to a pilot section; and
determining the downlink transmission power according to the user level parameter value, the cell level parameter value, p A and p B .

3. A non-transitory computer storage medium, in which computer executable instructions are stored and are used for executing the method for improving downlink transmission power according to claim 2 .

4. A non-transitory computer storage medium, in which computer executable instructions are stored and are used for executing the method for improving downlink transmission power according to claim 1 .

5. A network side network element for improving downlink transmission power, comprising:
an assignment unit configured to, when a network side network element determines that a downlink subframe in a radio frame is an almost blank subframe, set a user level parameter with a maximum value among numerical values corresponding to the user level parameter, and set a cell level parameter with a maximum value among numerical values corresponding to the cell level parameter; and
a determination unit configured to determine downlink transmission power according to the user level parameter value and the cell level parameter value;
wherein the network side network element further comprises:
a judgment unit configured to determine whether the downlink transmission power is greater than radio-frequency maximum power of the network side network element;
the assignment unit is further configured to, if the downlink transmission power is greater than the radio-frequency maximum power of the network side network element, assign a secondary maximum value among the numerical values corresponding to the user level parameter to the user level parameter, and assign a secondary maximum value among the numerical values corresponding to the cell level parameter to the cell level parameter; and
the determination unit is further configured to determine the downlink transmission power according to the user level parameter value and the cell level parameter value obtained after assignment, and sequentially cycle until the determined downlink transmission power is less than or equal to the radio-frequency maximum power of the network side network element.

6. The network side network element according to claim 5 , wherein the determination unit comprises:
a first determination subunit configured to determine p A according to the user level parameter value, wherein p A is a ratio of subcarrier power corresponding to a data section in an orthogonal frequency division multiplexing symbol not containing pilot to subcarrier power corresponding to a pilot section; and determine p B according to the cell level parameter value, wherein p B is a ratio of subcarrier power corresponding to a data section in an orthogonal frequency division multiplexing symbol containing pilot to subcarrier power corresponding to a pilot section; and
a second determination subunit configured to determine the downlink transmission power according to the user level parameter value, the cell level parameter value, p A and p B .

Assignees

• Zte Corp

Inventors

• Wu Hao
• Lou Hongwei

Classifications

• H04W52/285

  taking into account the mobility of the user · CPC title

• H04W52/282

  taking into account the speed of the mobile · CPC title

• H04W52/223

  predicting future states of the transmission · CPC title

• H04W52/281

  taking into account user or data type priority · CPC title

• H04W52/143 Primary

  Downlink power control · CPC title