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A hybrid access selection method for macro-femto network based on cloud computing

A hybrid access and cloud computing technology, applied in network planning, advanced technology, climate sustainability, etc., can solve problems such as unreasonable hybrid access selection strategies, save power consumption, suppress interference levels, and reduce latency and the effect of packet loss rate

Inactive Publication Date: 2019-03-29
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: aiming at the unreasonable problem of the hybrid access selection strategy of the current macro-femto network, a hybrid access selection method of the macro-femto network based on cloud computing is proposed, thereby improving the macro-femto network Overall throughput and reduced same-layer interference and inter-layer interference

Method used

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  • A hybrid access selection method for macro-femto network based on cloud computing
  • A hybrid access selection method for macro-femto network based on cloud computing
  • A hybrid access selection method for macro-femto network based on cloud computing

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Embodiment 1

[0024] Embodiment 1 Information collection process of the present invention

[0025] refer to figure 1 , the present invention is a hybrid access selection method of a macro-femto network based on cloud computing. In this embodiment, the collection of data is through a base band unit (Base Band Unit, BBU) and a remote radio unit ( Remote Radio Unit (RRU), RRU is responsible for digital-to-analog conversion of data and radio frequency transmission and reception, and BBU concentrates all digital baseband processing functions. The BBU is placed in the centralized storage cabinet, while the RRU is placed at the coverage point, using the existing equipment room resources to cover the surrounding area three-dimensionally. The RRU is connected to the BBU through an optical fiber or an optical fiber transmission network, and the RRU can be deployed at a remote site (such as 1-10Km) away from the physical location of the BBU. To facilitate deployment, the RRU is designed to be small ...

Embodiment 2

[0026] Embodiment 2 The cloud computing process of the present invention

[0027] Taking the rate that each base station can provide for macro users as the selection standard, the cloud calculates the service rate that each FBS can provide for macro users based on the geographical location, occupied bandwidth, and interference level of the FBS. The minimum rate required by a macro user to meet the basic communication needs, expressed in demand throughput. Only base stations that provide a service rate greater than the minimum rate required by macro users are considered as candidate access base stations, and the cloud finally selects the base station that provides the highest service rate among the candidate base stations as the access base station. The calculation of the supply throughput and demand throughput is determined according to the formula (1), and the SINR in the formula (1) is determined according to the formula (2).

[0028]

[0029]

[0030] Among them, N ...

Embodiment 3

[0034] Embodiment 3 The specific process of user access in the present invention

[0035] image 3 It is a flow chart of user access in the present invention, and the specific access process steps of an unauthorized user are:

[0036] Step 1: The unauthorized macro user waits for the access information fed back from the cloud after sending the access request.

[0037] Step 2: Access according to the allocated base station, if the allocated access is a femtocell, switch to the allocated femtocell, if the allocated access is a macrocell, no switching is required.

[0038] Step 3: If the user drops or is interrupted midway, the request needs to be sent again, and the cloud will allocate base station access again; if the access is successful until the user's service ends, the access is completed.

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Abstract

The invention discloses a hybrid access selection method based on cloud computing for a macro-femto network, and belongs to the technical field of wireless communications. The hybrid access selection method comprises the three steps of data acquisition, cloud computing and user access. According to the hybrid access selection method, a base station is matched rapidly for macrocell user equipment to access through the cloud computing, so that the time delay and packet loss rate caused by blind matching for the macrocell user equipment can be reduced, and the throughput of the macrocell user equipment and the spectral efficiency of a system are increased effectively.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a hybrid access selection method of a macro-femto network based on cloud computing. Background technique [0002] In a cellular network, about 2 / 3 of voice services and more than 90% of data services take place indoors. Therefore, it is becoming increasingly important for operators to provide good indoor coverage for voice, video, and high-speed data services. Among various technologies for solving indoor coverage, Femto Base Station (FBS) is favored by more and more researchers because of its low price and flexible location for additional installation. [0003] According to the standard of 3GPP (3rd Generation Partnership Project), femto base stations are divided into three categories: femto base stations of closed access mode, open access mode and hybrid access mode. In the double-layer network of macro base station–femtocell base station (macro-femto), unauthor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/18H04W24/02H04W52/02
CPCH04W16/18H04W24/02H04W52/0206Y02D30/70
Inventor 于银辉陈倩于越田小建杨蕾
Owner JILIN UNIV
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