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Method and base station for regulating and controlling upstream load change caused by changing wave beam direction

A beam direction and load change technology, applied in the field of uplink load changes caused by beam direction changes and in the field of base stations, which can solve problems such as uplink performance degradation and congestion control response.

Inactive Publication Date: 2014-12-10
ERICSSON (CHINA) COMMUNICATION COMPANY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0026] Due to the change of UE beam direction, the generated RoT peak value in the new BF control cell (i.e., the target BF control cell) will greatly exceed the RoT target value and trigger the congestion control reaction, which will deteriorate the uplink performance

Method used

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  • Method and base station for regulating and controlling upstream load change caused by changing wave beam direction
  • Method and base station for regulating and controlling upstream load change caused by changing wave beam direction
  • Method and base station for regulating and controlling upstream load change caused by changing wave beam direction

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Embodiment Construction

[0059] The exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. In this exemplary embodiment, a WCDMA network is taken as an example. However, those skilled in the art should understand that the scope of the present invention is not limited thereto. The schemes of the embodiments all fall within the protection scope of the present invention. The invention can also be applied to other networks, such as CDMA, TD-SCDMA, CDMA2000, LTE, and other interference sharing networks.

[0060] Refer to the following image 3 , describes the structure of the Node B 300 according to the exemplary embodiment of the present invention. The Node B 300 according to the exemplary embodiment of the present invention can control the change of the uplink load caused by changing the beam direction from the current BF control cell Cell A to the target BF control cell Cell B.

[0061] Such as image 3 As shown, Node B 300 includes: an e...

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Abstract

The present invention provides a method of adjusting uplink load variance due to a change of a beam direction turning from towards a current beamforming control cell to towards a target beamforming control cell, comprising: estimating an uplink load increment of the target beamforming control cell due to the change of the beam direction, before the beam direction turning from towards the current beamforming control cell to towards the target beamforming control cell; comparing the estimated uplink load increment with an available uplink load headroom of the target beamforming control cell; and adjusting an uplink load grant of a user equipment if the uplink load increment is larger than the available uplink load headroom, so that an uplink load increment is not beyond the available uplink load headroom, so that the uplink load increment is not beyond the available uplink load headroom.

Description

technical field [0001] The present invention relates to a method and a base station for ensuring uplink stability in a communication system, and more particularly, to a method for regulating uplink load changes caused by beam direction changes and a corresponding base station. Background technique [0002] · Uplink beamforming [0003] Currently, the 3rd Generation Partnership Project (3GPP) is evaluating in the context of High Speed ​​Uplink Packet Access (HSUPA) (see 3GPP Tdoc RP-090987, 3GPP Work Item Description: Uplink Tx Diversity for HSPA, which is incorporated by reference) Potential advantages of uplink transmit diversity. With uplink transmit diversity, a user equipment (UE) equipped with two or more transmit antennas can fully utilize these antennas. This can be achieved by combining the transmitted signal s(t) with the weighting factor W=[w 1 ,w 2 ,...,w i ,...,w M ] are multiplied together. The term "weighting factor" may also refer to a precoding vector....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/08H04B7/06H04B7/04
CPCH04B7/0404H04B7/0634H04B7/0617H04B7/0623H04W28/0289H04W28/08H04W88/08
Inventor 刘进华张璋
Owner ERICSSON (CHINA) COMMUNICATION COMPANY LTD