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Beamforming method and heterogeneous cloud wireless accessing network based on same

A wireless access network, beamforming technology, applied in radio transmission systems, diversity/multi-antenna systems, space transmit diversity, etc., can solve the problem of not considering the joint optimization of MBSs and RRHs beamforming vectors, etc.

Active Publication Date: 2018-12-07
NANJING UNIV OF POSTS & TELECOMM
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the literature [6] studies the situation that there are multiple macrocellular networks in the heterogeneous cloud wireless access network, it assumes that the beamforming vectors of MBSs are known, and only optimizes the beamforming vectors of RRHs without considering MBSs and RRHs beamforming vector joint optimization problem

Method used

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  • Beamforming method and heterogeneous cloud wireless accessing network based on same
  • Beamforming method and heterogeneous cloud wireless accessing network based on same
  • Beamforming method and heterogeneous cloud wireless accessing network based on same

Examples

Experimental program
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Embodiment 1

[0092] Such as figure 1 As shown, this embodiment provides a beamforming method, including the following steps:

[0093] Step A, calculating the data transmission rate of the cellular user;

[0094] Step B, calculating the data transmission rate of the RRH user;

[0095] Step C, calculating the total data transmission rate and total power consumption of the heterogeneous cloud wireless access network;

[0096] Step D, determine the beamforming vector joint optimization problem of MBS and RRH;

[0097] Step E, solving the joint optimization problem of the beamforming vectors of the MBS and the RRH.

[0098] Specifically, let M={1,2,,M} represent the set of all MBSs (or the set of macrocellular networks), and in the mth macrocellular network, let N m ={1,2,,N m} represents the set of all RRHs, K m ={1,2,,K m} represents the set of all cellular users, J m ={1,2,,J m} represents the set of all RRH users, where K m and J m are the total number of cellular users and RRH u...

Embodiment 2

[0169] Such as figure 2 As shown, this embodiment provides a heterogeneous cloud wireless access network based on the above-mentioned beamforming method, the network is composed of a baseband processing unit pool and a plurality of macrocellular networks; each of the macrocellular networks includes A macro base station (Macro Base Station, MBS), multiple wireless remote radio frequency modules (Remote Radio Head, RRH), multiple cellular users, and multiple RRH users; the baseband processing unit pool is connected to the MBS and RRH through optical fibers Communication connection; the macro base station is used for wide area coverage of wireless signals, and the RRH is used for coverage of wireless signals in hot spots or blind spots; MBSs and RRHs provide communication services for the cellular users and RRH users respectively; the MBSs, The RRHs represent multiple MBSs and multiple RRHs, respectively.

[0170] Specifically, the hotspot area is a busy area formed due to unev...

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Abstract

The invention discloses a beamforming method and a heterogeneous cloud wireless accessing network based on same. The method comprises the following steps of calculating data transmission rate of a cellular user, calculating the data transmission rate of an RRH user, calculating the total data transmission rate and total power consumption of the heterogeneous cloud wireless accessing network, determining a beamforming vector combined optimization problem of an MBS and a RRH, and solving a beamforming vector combined optimization problem of the MBS and the RRH. The heterogeneous cloud wireless accessing network comprises a baseband processing unit pool and a plurality of macrocellular networks. Each macrocellular comprises a macro base station MBS, a plurality of wireless remote RF module (RRH), a plurality of cellular user and a plurality of RRH users. According to the method, an original optimization problem is converted to an easy processing two-order cone programming method, therebyimproving energy efficiency of the heterogeneous cloud wireless accessing network, suppressing interference in the network and reducing total power consumption of the network.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a beamforming method and a heterogeneous cloud wireless access network based on the method. Background technique [0002] With the rapid increase in the number of smart mobile devices, and various wireless applications accompanying mobile social networks and Internet of Things (IoT) technologies, it is estimated that the global mobile data traffic will reach 587EB by 2021. At the same time, the total number of global mobile network access devices will reach 100 billion by the end of 2020, of which the number of mobile terminals will exceed 10 billion. The rapid development of wireless networks has led to a rapid increase in energy consumption and greenhouse gas emissions. Statistics show that 2%-10% of global energy consumption and 2% of global CO2 emissions are generated by the ICT industry, of which more than 60% are directly attributable to radio access network...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06H04B7/08
CPCH04B7/0617H04B7/086Y02D30/70
Inventor 左加阔杨龙祥鲍楠
Owner NANJING UNIV OF POSTS & TELECOMM
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