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A method for user pairing of LTE home base stations with mode switching

A technology for home base station and user pairing, applied in the directions of space transmit diversity, electrical components, diversity/multi-antenna systems, etc., and can solve problems such as wall penetration loss and difficult indoor communication in macro base station networks.

Active Publication Date: 2016-01-06
NANJING XIANFENG SHUOTONG WIRELESS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the penetration loss of the wall, the macro base station network is difficult to meet the needs of indoor communication

Method used

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  • A method for user pairing of LTE home base stations with mode switching
  • A method for user pairing of LTE home base stations with mode switching
  • A method for user pairing of LTE home base stations with mode switching

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Embodiment 1

[0047] The LTE home base station user pairing method with mode switching in the present invention performs user pairing according to a scheduling period. In the simulation scenario of the embodiment, the CoMP technology is adopted between the HeNB and the MeNB to exchange channel information and scheduling decision information. Assume that both the number of HUE and MUE are 8. The simulation scene is set as the low channel correlation scene of femtocell. Other simulation parameters are shown in Table 1.

[0048] Table 1 Simulation parameters

[0049] parameters

set up

Number of HUEs

8

Number of MUEs

8

Number of transmit antennas for HUE

1

The number of receiving antennas of HeNB

2

system bandwidth

20MHz

subcarrier spacing

15kHz

Sampling frequency

30.72MHz

carrier frequency

2GHz

total number of subcarriers

2048

[0050] Number of user subcarriers ...

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Abstract

The invention discloses an LTE femtocell user pairing method with mode switch. User pairing is carried out according to dispatching cycles, a polling method is utilized to choose an unpaired femtocell user HUE as the first user in a pairing user group in each cycle, an inner layer is chosen to be paired with the HUE or a cross layer is chosen to be paired with a macro base station user MUE according to the strength of cross layer interference, the maximum pairing is carried out on the premise of guaranteeing the bit error rate, pairing is finished, and the femtocell can inform all paired users to send data in the next dispatching cycle. The LTE femtocell user pairing method can adaptively choose the inner layer of the HUE or the cross layer of the MUE to be paired through a signal to interference ratio threshold judgment method. When the average bit error ratio doesn't beyond an error bit ratio increasing control coefficient, pairing users are increased continuously. Furthermore, the LTE femtocell user pairing method improves the channel utilization rate of limited frequency bands and relieves the work stress of a macro base station through the femtocell on the premise guaranteeing the bit error ratio.

Description

technical field [0001] The invention relates to the technical field of wireless communication reception, in particular to a user pairing method of an LTE home base station with mode switching. Background technique [0002] According to a survey, more than 50% of voice services and more than 70% of data services occur in indoor environments, including homes, offices, cafes, and shopping malls. However, due to the penetration loss of the wall, it is difficult for the macro base station network to meet the needs of indoor communication. In order to solve this problem, the technology of using femtocell to assist the communication of macro base station came into being. The home base station is also called a femto cell, and is called HomeeNodeB, or HeNB for short, in the LTE system. Femtocell is a small, low-power base station with a coverage range of 10-50m. It is mainly used to solve indoor coverage problems. It has the characteristics of simple access, low power consumption, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/04H04W72/12
Inventor 王捷缪开济
Owner NANJING XIANFENG SHUOTONG WIRELESS TECH
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