RNTP (relative narrowband transmission power)-based interference coordinating method in LTE (long term evolution) system

A technology of interference coordination and preset period, applied in the field of anti-interference, can solve problems such as unrealizable, loss of frequency selection scheduling gain, etc.

Inactive Publication Date: 2015-01-28
POTEVIO INFORMATION TECH CO LTD
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Problems solved by technology

Therefore, the frequency planning update period of the soft frequency reuse scheme and partial frequency reuse cannot keep up with the changing speed of channel gain in outdoor scenarios, resulting in a serious loss of frequency selection scheduling gain
[0008] Other Coordinated Scheduling / Beamforming (CS / CB) and Joint Processing / Transmission (JP) are different technical branches of Coordinated Multipoint Transmission (CoMP), which are physical layer technologies under the LTE-A framework. In the current LTE framework can not be achieved under

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  • RNTP (relative narrowband transmission power)-based interference coordinating method in LTE (long term evolution) system
  • RNTP (relative narrowband transmission power)-based interference coordinating method in LTE (long term evolution) system
  • RNTP (relative narrowband transmission power)-based interference coordinating method in LTE (long term evolution) system

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[0026] In order to make the purpose, technical means and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] The basic idea of ​​the present invention is: send RNTP bit map between adjacent cells to indicate the current usage status of each resource block, and each cell determines the interference status of each RB to neighboring cells according to the received RNTP bit map, thereby coordinating each RB transmit power.

[0028] figure 1 It is a schematic flowchart of the overall flow of the RNTP-based interference coordination method in the present invention. Such as figure 1 As shown, the method includes:

[0029] Step 101, every cell in the system counts the data rate R of each RB of the cell in the preset cycle time every preset cycle time n , forming and sending the RNTP bitmap to the neighboring cell.

[0030] The transmission strategy of RNTP includes two...

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Abstract

The invention provides an interference coordinating method including: every other preset period, making statistics on data rate Rn of each RB (resource block) of a cell in a system in a preset period to form an RNTP (relative narrowband transmission power) bit map, and transmitting the RNTP bit map to neighboring cells; and summing the RNTP bit maps received in the preset periods of one optional cell in the system according to the RBs, grouping the RBs according to summing results, and computing transmission power of each RB with the group serving as unit, wherein the transmission power of the RBs in the same group is the same, and the larger summing result the group has, the smaller the transmission power of the RB group is. By the aid of the interference coordinating method, resource utilization effectiveness can be guaranteed, and interference coordination is realized.

Description

technical field [0001] The invention relates to an anti-interference technology in a communication system, in particular to an RNTP-based interference coordination method in an LTE system. Background technique [0002] The existing cellular mobile communication system LTE puts forward higher standards and requirements for the performance of cell-edge users, and inter-cell interference (ICI) is the main factor affecting the performance of cell-edge users. Therefore, in LTE The introduction of inter-cell interference coordination technology becomes an effective way to solve the above problems. [0003] The technical indicators usually used to measure the performance of cell edge users include edge user SINR, throughput, and spectrum utilization, among which the most fundamental one is the edge user SINR. The existing technical solutions for improving the performance of edge users mainly include: soft frequency multiplexing, partial frequency multiplexing, cooperative scheduli...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/18H04W52/04
Inventor 王莹周岩张珂姚文清张纬栋王坦张平孟艳韦玮
Owner POTEVIO INFORMATION TECH CO LTD
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