Unlock instant, AI-driven research and patent intelligence for your innovation.

Backhaul compression and bandwidth distribution method in heterogeneous cloud wireless access network

A technology of wireless access network and bandwidth allocation method, applied in wireless communication, network planning, network traffic/resource management, etc., can solve problems such as inability to upload data at the same time, limited backhaul capacity, etc., to avoid cumbersome calculations and save spectrum resources and the effect of maximizing system capacity

Inactive Publication Date: 2017-10-10
NANJING UNIV OF POSTS & TELECOMM
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by the backhaul capacity, the RRU cannot simultaneously upload a large amount of data to the baseband unit pool

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Backhaul compression and bandwidth distribution method in heterogeneous cloud wireless access network
  • Backhaul compression and bandwidth distribution method in heterogeneous cloud wireless access network
  • Backhaul compression and bandwidth distribution method in heterogeneous cloud wireless access network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0012] A backhaul compression and bandwidth allocation method in a heterogeneous cloud wireless access network provided by an embodiment of the present invention can optimize resource allocation in the case of limited spectrum resources, improve the overall system rate, and meet the requirements of high spectrum utilization . The architecture of the heterogeneous cloud wireless access network in this embodiment is as follows: figure 1 As shown, it is assumed that the heterogeneous cloud wireless network is composed of a macro cell base station, L remote antenna units and a baseband unit pool. The...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a backhaul compression and bandwidth distribution method in a heterogeneous cloud wireless access network; the method comprises the following steps: 1, dividing user terminals in the heterogeneous cloud wireless access network into two groups, directly connecting one group into a microcell base station as U1 type users, and connecting the other group into remote antenna units as U2 type users; 2, allowing the base station to respectively calculate statistics channel state information from U1 type users to the base station and from U2 type users to the plurality of remote antenna units according to the position information; 3, allowing the base station to use the statistics channel state information to simultaneously calculate an optimal backhaul compression noise covariance matrix [psi]* and an optimal bandwidth partition coefficient [eta]*; 4, allowing the base station to distribute frequency spectrums according to the [eta]* value; 5, allowing the remote antenna units to determine the compression level according to the backhaul compression noise covariance matrix [psi]*. When the backhaul capacity and frequency spectrum resources are constrained, the method can combine and optimize backhaul compression and bandwidth distribution, thus effectively maximizing the system reachable rate.

Description

technical field [0001] The invention relates to the technical field of backhaul compression design and spectrum resource management in a heterogeneous cloud wireless access network, in particular to a backhaul compression and bandwidth allocation method in a heterogeneous cloud wireless access network. Background technique [0002] Base stations with different transmission powers form Heterogeneous Networks (HetNet) to serve users together. Although the spectrum efficiency is improved, the interference between different layers limits the further performance improvement. The cloud radio access network (Cloud Radio Access Networks, CRAN) centralizes the data in the cloud baseband unit pool (Baseband Unit Pool) for processing through the cooperation between the remote antenna units (Remote Radio Unit), which not only avoids the interference of the base station, Gained the cooperation buff again. However, limited by the backhaul capacity, the RRU cannot simultaneously upload a ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/06H04W28/18H04W72/08H04W16/32H04W88/08H04W72/54
CPCH04W28/06H04W28/18H04W88/085H04W16/32H04W72/542
Inventor 张军朱洪波蔡曙杨丽花夏文超
Owner NANJING UNIV OF POSTS & TELECOMM