Mobile cellular network based on layered cloud computing

Patent metadata

Field	Value
Publication number	US-9439243-B2
Application number	US-201414161518-A
Country	US
Kind code	B2
Filing date	Jan 22, 2014
Priority date	Aug 2, 2011
Publication date	Sep 6, 2016
Grant date	Sep 6, 2016

Abstract

The present invention provides a new system structure of mobile cellular system based on layered cloud computing. A core network part of the system structure includes a CRG node, and an access network part includes an MC node and a DU node. The system structure proposed in the present invention is compatible with all conventional mobile air interface protocols, supports the layered cloud computing function, and is capable of providing joint signal processing and joint scheduling, flexibly allocating computing resources among nodes, and compressing the structure of the core network, so that larger network data throughput can be provided for users with lower deployment cost.

First claim

What is claimed is:

1. A cloud computing system, comprising:
at least one cloud radio gateway (CRG) node, at least one macro cloud (MC) node and at least one distributive unit (DU) node, wherein the at least one CRG node is located at the top layer in a core network of a mobile cellular network, the at least one MC node and the at least one DU node are located in an access network of the mobile cellular network, the at least one CRG node, the at least one MC node, and the at least one DU node are all capable of performing cloud computing, the at least one DU node is located in coverage of the at least one MC node, and the at least one MC node is located in coverage of the at least one CRG node, wherein
the at least one CRG node is configured to: receive network data from a public data network (PDN)/public switched telephone network (PSTN); allocate the received network data to one node of the at least one CRG node, the at least one MC node, the at least one DU node, and another CRG node in the core network, or allocate the received network data to multiple nodes of the at least one CRG node, the at least one MC node, the at least one DU node, and the other CRG node; and if receiving the allocated network data, perform signal processing of an air interface protocol stack on the allocated network data to generate a downlink baseband signal, and send the generated downlink baseband signal to the at least one MC node or to the at least one DU node through the at least one MC node;
the at least one MC node is configured to: if receiving the allocated network data, perform signal processing of an air interface protocol stack on the allocated network data to generate a downlink baseband signal, and translate the received downlink baseband signal to a radio frequency (RF) signal and send to the user, or, send the generated downlink baseband signal to the at least one DU node; and if receiving the downlink baseband signal from the at least one CRG node, the other CRG node, the at least one DU node or, another MC node in the access network, translate the received downlink baseband signal to a RF signal and send to the user, or, send the received downlink baseband signal to the at least one DU node; and
the at least one DU node is configured to: if receiving the allocated network data, perform signal processing of an air interface protocol stack on the allocated network data to generate a downlink baseband signal, and translate the received downlink baseband signal to a RF signal and send to the user; and if receiving the downlink baseband signal from the at least one MC node or from the at least one CRG node, the other CRG node or the other MC node through the at least one MC node, translate the received downlink baseband signal to a RF signal and send to the user.

2. The cloud computing system according to claim 1 , wherein
the at least one DU node is further configured to: receive an uplink baseband signal from the user; forward the received uplink baseband signal to the at least one MC node, or perform signal processing of an air interface protocol stack on the received uplink baseband signal to generate network data, and send the generated network data to the at least one CRG node;
the at least one MC node is further configured to: receive the uplink baseband signal from the user or the at least one DU node; forward the received uplink baseband signal to the at least one CRG node, or perform signal processing of an air interface protocol stack on the received uplink baseband signal to generate network data, and send the generated network data to the at least one CRG node; and
the at least one CRG node is further configured to: perform signal processing of an air interface protocol stack on the uplink baseband signal received from the at least one MC node to generate network data; receive network data from the at least one MC node or the at least one DU node; and send the generated network data or the received network data to the PDN/PSTN.

3. The cloud computing system according to claim 1 , wherein
any node in the at least one CRG node, the at least one MC node, the at least one DU node and the other CRG node requests any other node in the at least one CRG node, the at least one MC node, the at least one DU node and the other CRG node to perform joint signal processing of an air interface protocol stack and/or receive a request for performing the joint signal processing of an air interface protocol stack from the any other node.

4. The cloud computing system according to claim 3 , wherein the any node and the any other node perform the joint signal processing of an air interface protocol stack.

5. The cloud computing system according to claim 4 , wherein the any node and the any other node perform joint processing of a same layer of a protocol of an air interface protocol stack.

6. The cloud computing system according to claim 1 , wherein
any node in the at least one CRG node, the at least one MC node, the at least one DU node and the other CRG node requests any other node in the at least one CRG node, the at least one MC node, the at least one DU node and the other CRG node to assist in performing signal processing of an air interface protocol stack and/or receive a request for assisting in performing the signal processing of the air interface protocol stack from the any other node.

7. The cloud computing system according to claim 6 , wherein
if the any node receives the request for assisting in performing the signal processing of the air interface protocol stack from the any other node, the any node assists the any other node in performing the signal processing of the air interface protocol stack.

8. A downlink divergence method in a cloud computing system, wherein the cloud computing system comprises:
at least one cloud radio gateway (CRG) node, at least one macro cloud (MC) node and at least one distributive unit (DU) node, the at least one CRG node is located at the top layer in a core network of a mobile cellular network, the at least one MC node and the at least one DU node are located in an access network of the mobile cellular network, the at least one CRG node, the at least one MC node and the at least one DU node are all capable of performing cloud computing, the at least one DU node is located in coverage of the at least one MC node, and the at least one MC node is located in coverage of the at least one CRG node, the method comprising:
receiving, by the at least one CRG node, network data from a public data network (PDN)/public switched telephone network (PSTN);
allocating, by the at least one CRG node, the received network data to one node of the at least one CRG node, the at least one MC node, the at least one DU node, and another CRG node in the core network, or allocating the received network data to multiple nodes of the at least one CRG node, the at least one MC node, the at least one DU node and the other CRG node;
performing, by the one node or multiple nodes receiving the allocated network data, signal processing of an air interface protocol stack on the allocated network data, to generate a downlink baseband signal; and
translating, by the at least one MC node or the at least one DU node respectively, the generated downlink baseband signal to a RF signal and sending to a user.

9. The method according to claim 8 , wherein if the at least one CRG node receives the allocated network data, the method further comprises:
performing, by the at least one CRG node, signal processing of an air interface protocol stack on the allocated network data, to generate a downlink baseband signal;
sending, by the at least one CRG node, the generated downlink baseband signal to the at least one MC node or to the at least one DU node thr

Assignees

• Huawei Tech Co Ltd

Inventors

• Liu Sheng
• Wang Rui
• Cheng Hong

Classifications

• H04W84/042

  Public Land Mobile systems, e.g. cellular systems · CPC title

• H04W88/16

  Gateway arrangements · CPC title

• H04W88/12 Primary

  Access point controller devices · CPC title

• H04W88/14

  Backbone network devices · CPC title

• H04W84/02

  Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop] · CPC title