US 2019/0174464 A1Published application

Method for controlling c-ran

AssigneeIndustrial Technology Research Institute

InventorJen-Feng HUANG

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Abstract

A method for controlling C-RAN applicable for a C-RAN having a plurality of remote radio heads (RRH) and a baseband unit (BBU) includes the following steps: collecting a first uplink signal corresponding to a first user end device, determining a first estimated region based on a communication range of part of RRH's receiving the first uplink signal, setting N estimated coordinates in the first estimated region wherein N is larger than one, giving N moving directions to the N estimated coordinates, modifying the N estimated coordinates based on a maximum displacement and the N moving directions, and selecting at least one RRH to send a type-3 downlink packet to the first user end device based on the N modified estimated coordinates.

Claims16

Dependent claims

A method for controlling C-RAN, applicable for a C-RAN having a plurality of remote radio heads and a baseband unit, wherein the method comprises:

receiving a plurality of preambles from the plurality of remote radio heads wherein each of the preambles is corresponding to one user end device;
determining at least one type-2 downlink packet based on the plurality of preambles and the plurality of remote radio heads;
if the at least one type-2 downlink packet is a plurality of type-2 downlink packets, determining whether a number of resource blocks of a physical downlink control channel is enough or not based on an amount of control signals of the plurality of type-2 downlink packets;
and
if the number of resource blocks is not enough, integrating at least part of the plurality of type-2 downlink packets based on a remote radio head arrangement table;
wherein the remote radio head arrangement table is used for describing a relationship between geometric locations of the plurality of remote radio heads.

3 more elements

A method for controlling C-RAN having a plurality of remote radio heads and a baseband unit, comprising:

collecting at least one first uplink signal corresponding to a first user end device;
determining a first estimated region based on a communication range of part of the plurality of remote radio heads receiving the at least one first uplink signal;
setting N estimated coordinates in the first estimated region, wherein N is an integer larger than one;
giving N moving directions to the N estimated coordinates;
modifying the N estimated coordinates based on a maximum displacement and the N moving directions;
and
selecting at least one remote radio head among the plurality of remote radio heads based on the N modified estimated coordinates to send a type-3 downlink packet to the first user end device.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/854,958Filed 27 Dec 2017
Priority: TW 1061426125 Dec 2017
Published: 6 Jun 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04W 72/23
Control channels or signalling for resource management: in the downlink direction of a wireless link, i.e. towards a terminal
H04W 72/51
Allocation or scheduling criteria for wireless resources: based on terminal or device properties
H04W 72/52
Allocation or scheduling criteria for wireless resources: based on load
H04W 88/085
Access point devices: access point devices with remote components

Family

US 10,716,104 B2Related patent
US 2019/0174464 A1This patent

From the US filing history. Foreign family members aren’t listed.

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