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Base station activation and beam-forming method based on stable access relation

A beamforming and beamforming matrix technology, applied in the field of base station activation and beamforming based on stable access relationship, can solve problems such as service interruption, increase the difficulty of system scheduling, and speed up equipment loss.

Active Publication Date: 2017-08-22
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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Problems solved by technology

However, when the channel changes rapidly, the status of the base station will also change rapidly, which will increase the difficulty of system scheduling, accelerate the loss of equipment, and even cause service interruption in severe cases

Method used

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  • Base station activation and beam-forming method based on stable access relation
  • Base station activation and beam-forming method based on stable access relation
  • Base station activation and beam-forming method based on stable access relation

Examples

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Embodiment 1

[0142] Consider a hexagonal area where K=10 base stations are deployed. These base stations will cooperate to transmit information for M=15 users. Each base station is equipped with N=4 antennas, and each user is equipped with one antenna. The locations are randomly distributed in a hexagonal area with a side length of 1000 m. Consider the performance of the communication network over L=20 time slots.

[0143] The channel modeling between the user and the base station is as follows:

[0144] Suppose the distance between user m and base station k in the lth time slot is their channel is a mean of 0 and a variance of (200 / d m,k (l)) 3 L m,k (l) Rayleigh channel, where is the shadow fading coefficient, and its distribution is as follows:

[0145] 10 log 10 (L m,k (l))~N(0,64)

[0146] Suppose the ambient noise σ 2 =10dBm, the transmit power threshold of each base station is 10dB, namely QoS requirement threshold for each user ADMM algorithm termination threshold...

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Abstract

The invention relates to a base station activation and beam-forming method based on a stable access relation. The method includes steps: (1) setting network parameters; (2) initializing a time slot and a base station state vector with zero time slot; and (3) calculating a beam-forming matrix and the base station stator vector by employing an ADMM algorithm. According to the method, the system satisfies service quality requirements of various users, the energy consumption of the system is minimum, the network performance is enhanced through flexible optimization of the access relation, the stability of the access relation is considered, the access relation of the base station user can maintain stable in a long time, complicated operation, extra energy consumption and communication interruption caused by frequent switching of the access relation are avoided, and the cost for the calculation time is reduced by employing distributed iterative implementation.

Description

technical field [0001] The invention relates to base station control and beam forming technology in wireless communication network, in particular to a base station activation and beam forming method based on stable access relationship. Background technique [0002] In modern wireless communication networks, base stations can be densely deployed and multi-point coordinated transmission to increase signal quality and edge coverage. However, due to dense base stations and multiple base stations cooperating to serve a user, some base stations may have low efficiency problems, and dense base stations working at the same frequency at the same time will lead to increased communication interference, a large increase in the amount of shared data in the system, and complex scheduling management And other issues. Therefore, the number of base stations in the active state and cooperative transmission is often limited. Reasonable selection of the active / sleeping state of the base statio...

Claims

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Application Information

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IPC IPC(8): H04W16/28H04W52/02H04B7/06
CPCH04B7/0617H04W16/28H04W52/0206Y02D30/70
Inventor 林静然邓宏伟利强邵怀宗
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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