Inter-cell interference coordination method and base station

An inter-cell interference and coordination method technology, applied in the field of communication, can solve the problems of excessive cell edge users and low system resource utilization, and achieve the effect of improving system capacity and improving system resource utilization.

Active Publication Date: 2017-04-12
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a method for coordinating inter-cell interference and a base station to at least solve the problem of low utilization of system resources caused by the excessive proportion of users at the edge of the cell

Method used

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  • Inter-cell interference coordination method and base station
  • Inter-cell interference coordination method and base station
  • Inter-cell interference coordination method and base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] figure 1 is a flow chart of a method for coordinating inter-cell interference according to Embodiment 1 of the present invention, as shown in figure 1 shown, including the following steps:

[0030] Step S102, the base station determines the user attributes of the cell users according to the measurement information reported by the UE or detected by the base station side, where the user attributes include: outer-ring users, middle-ring users and inner-ring users.

[0031] Step S104, the base station adjusts the transmit power of the user according to the user attribute.

[0032] In step S106, the base station determines the scheduling time and the number of time domain resources of the user according to the user attribute and the adjacent relationship between the cells.

[0033] In this embodiment, the base station improves the original user classification according to the acquired measurement information, and divides the cell users into outer-ring users, middle-ring us...

Embodiment 2

[0038] figure 2 is a flow chart of a method for coordinating inter-cell interference according to Embodiment 2 of the present invention, as shown in figure 2 shown, including the following steps:

[0039] Step S202, the base station calculates the difference △RSRP between the RSRP of the UE's own cell and the strongest neighboring cell according to the RSRP measurement information reported by the UE, and then sorts the △RSRP of all UEs from small to large, and sets T1 to 30% CDF△RSRP , T2 is 60% CDF△RSRP. At the same time set D1 = 3dB, D2 = 3dB.

[0040] In step S204, the base station judges and distinguishes user attributes according to preset user attribute discrimination thresholds T1 and T2 and measurement information reported by users such as RSRP. If the measurement result of a user △RSRP=T2, the user is identified as an inner-ring user; if the measurement result of a user T1 image 3 It is a schematic diagram of user attribute discrimination according to Embodiment ...

Embodiment 3

[0044] Figure 5 is a flow chart of a method for coordinating inter-cell interference according to Embodiment 3 of the present invention, as shown in Figure 5 shown, including the following steps:

[0045] Step S502 , the base station sorts the CQIs of all UEs from small to large according to the CQI measurement information reported by the UEs, and sets T1 to 30% CDF CQI, and T2 to 60% CDF CQI. At the same time set D1 = 3dB, D2 = 3dB. The method in this example can also be adapted to the case where the measurement information is RSRQ or reference signal new interference to noise ratio.

[0046] In step S504, the base station judges and distinguishes user attributes according to preset user attribute discrimination thresholds T1 and T2 and measurement information reported by users such as CQI. If the measurement result of a certain user is CQI=T2, the user is identified as an inner ring user; if the measurement result of a user is T1 image 3 .

[0047] Step S506, the base ...

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Abstract

The present invention provides a method for inter-cell interference coordination and a base station. The method includes: the base station determines user attributes of users in the cell according to measurement information reported by the UE or detected by the base station side, wherein the user attributes include: outer-ring users and middle-ring users and inner-ring users; the base station adjusts the user's transmit power according to the user attributes; the base station determines the user's scheduling time and the number of time domain resources according to the user attributes and the adjacent relationship between cells. In the present invention, the base station improves the original classification of users according to the acquired measurement information, so as to solve the shortage of resources or waste of resources caused by the high proportion of marginal users, improve the utilization rate of system resources, and improve the system capacity. Effect.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for coordinating inter-cell interference and a base station. Background technique [0002] In an LTE (Long Term Evolution, Long Term Evolution) system based on OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing), the main interference affecting system performance comes from inter-cell interference, especially for cell edge users. Inter-Cell Interference Coordination (ICIC for short) technology is an important means for reducing interference and improving system performance. Inter-cell interference coordination restricts the available resources of each cell through inter-cell coordination to improve the Signal-to-Interference and Noise Ratio (SINR) of adjacent cells on these resources, and the cell edge User data rate and coverage. Resources include time domain and frequency domain resources and transmit power. [0003] Regard...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/10H04W52/24H04W72/08H04W72/12
CPCH04W52/283H04W72/54
Inventor 张芳阮玉峰文敏
Owner ZTE CORP
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