Method for power distribution and antenna selection of distributed type antenna mobile communication system

A distributed antenna and antenna selection technology, applied in the research field of wireless resource management, can solve the high complexity and transmission delay switching method cannot be applied to multi-antenna mobile communication systems, cannot apply the requirements of antenna selection, and reduce the spatial correlation of radio frequency units. performance and other issues, to achieve the effect of improving the antenna selection method and switching method, ensuring mobility requirements, and having no signaling overhead.

Active Publication Date: 2010-01-20
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In traditional mobile communication system radio resource management methods, handover methods are usually used to complete the antenna selection of the base station, such as hard handoff (Hard Handoff) and soft handoff (Soft Handoff) based on mobile terminal received signal strength measurement, station selection transmit diversity handover (Site Selection Diversity Transmit), etc. These handover methods use the mobile terminal to measure the received wireless signal strength as the handover parameter, and need to inform the base station to complete the corresponding handover task through the signaling interaction of the upper layer. The measurement process of the mobile t...

Method used

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  • Method for power distribution and antenna selection of distributed type antenna mobile communication system
  • Method for power distribution and antenna selection of distributed type antenna mobile communication system
  • Method for power distribution and antenna selection of distributed type antenna mobile communication system

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example 1

[0044] figure 2 An implementation device of this method is given. The wireless signal measurement and signal strength parameter storage and update device receives wireless signals from each antenna, calculates the size of the wireless signal strength, and stores the wireless signal strength parameter value in the mobile terminal. the signal strength table in the radio frequency antenna table; the average signal strength parameter in the radio frequency antenna table and the threshold comparison device carry out weighted average and comparison with the threshold value of the signal strength parameter value stored in a period of time; the transmission power configuration and antenna selection device selects the antenna exceeding the threshold to transmit Power allocation to enable communication with mobile terminals.

[0045] The implementation steps of a specific embodiment are as follows:

[0046] It is assumed that there are m (m>6) antennas in the wireless signal coverage ...

example 2

[0055] The implementation steps of another specific embodiment are as follows:

[0056] There are m (m > 6) antennas in the wireless signal coverage of a base station, and the length of the running cycle is 10ms. If the wireless signal measurement and signal strength parameter storage update device only receives the signal-to-interference-noise ratio from 5 antenna signals, and recorded as SINR (1) (t), SINR (2) (t),...,SINR (5) (t).

[0057] Step 1: The base station periodically measures the signal-to-interference-noise ratio (SINR) of the mobile terminal received by each radio frequency antenna within the coverage of the wireless signal (i) (t), and stored in the following signal strength parameter table;

[0058] Antenna number

1

2

…

5

signal strength 1

SINR (1) (1)

SINR (2) (t)

…

SINR (5) (1)

signal strength 2

SINR (1) (2)

SINR (2) (2)

…

SINR (5) (2)

…

…

…...

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Abstract

The invention relates to a method for power distribution and antenna selection in a distributed type antenna system, which is a technology used for allocating power and an antenna resource of a mobile communication distributed type antenna system. When a mobile terminal moves in the coverage range of a wireless signal of the distributed type antenna system, a base station realizes a process of quickly selecting antennas according to the strength of the wireless signal of the mobile terminal received each antenna by directly carrying out transmitting power configuration on the antennas with better channel condition, and the switching of the mobile terminal and the enhancement of the power efficiency of the system are realized by the base station in the system in a simple method. The method for power distribution and antenna selection in the distributed type antenna system has the basic rule that the mobile terminal is always communicated with the antennas with better channel condition aiming at the coverage range of different antennas in a coverage subdistrict of the wireless signal of the distributed type antenna system, the whole process of selecting the antennas is completed in the base station from the measurement and judgment of the wireless signal to the execution of the transmitting power configuration, and a signal transmission process is not needed.

Description

technical field [0001] The invention relates to a method for base station transmission power configuration and antenna resource allocation in a mobile communication system, which belongs to the field of wireless resource management research in the mobile communication system. Background technique [0002] With the wide application of Multiple Input and Multiple Output (MIMO) technology in mobile communication systems, centralized multi-antenna systems and distributed multi-antenna systems have become typical wireless network structures in mobile communication systems. In order to effectively use the multi-antenna resources in the mobile communication system, the collaborative technology is used between the centralized or distributed multi-antennas in the system to improve the system spectrum utilization and power efficiency, and the multi-antennas are placed reasonably to form a repeater antenna system to compare Various new wireless network structures, such as high power ef...

Claims

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Application Information

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IPC IPC(8): H04W52/24H04B7/04
CPCY02B60/50
Inventor 尤肖虎赵新胜王东明
Owner SOUTHEAST UNIV
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