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Receiving-end transmission resource selection method, receiving-end transmission resource selection device and communication system

A technology for selecting the transmission and receiving end, applied in the field of communication, can solve the problems that the user performance at the edge of the cell is difficult to be further improved, and it is difficult to overcome inter-cell interference, so as to achieve the effect of improving utilization rate and performance

Active Publication Date: 2012-07-11
SHANGHAI HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned existing uplink CL-MIMO system only eliminates channel interference in the case of a single cell. In an actual communication system where multiple cells coexist, this solution will cause strong interference to adjacent cells / sectors. Therefore, the existing solution It is still difficult to overcome inter-cell interference, and it is difficult to further improve the performance of cell edge users

Method used

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  • Receiving-end transmission resource selection method, receiving-end transmission resource selection device and communication system
  • Receiving-end transmission resource selection method, receiving-end transmission resource selection device and communication system
  • Receiving-end transmission resource selection method, receiving-end transmission resource selection device and communication system

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Embodiment 1

[0057] In this embodiment, an uplink CL-MIMO system in TDD mode is taken as an example to describe the method for selecting transmission resources at the receiving end provided by the present invention. Such as figure 1 As shown, in this embodiment, the receiving end is MS, the sending end of the current cell is BS1, and the sending end of the adjacent cell is BS2. It is assumed that both BS1 and BS2 preset K precoding codebooks (K is greater than or equal to 2). Due to the variability of the channel, BS1 and BS2 need to rotate the precoding codebook at intervals, and the rotation time can be one or more transmission frames, or one or more transmission time slots (TTI, Transmit Time Interval). Assuming that at the Tth TTI time, the precoding codebook of BS1 is C 1 , the precoding codebook of BS2 is C 2 .

[0058] The specific implementation steps of the embodiment of the present invention may be:

[0059] Step 1: The MS obtains the interference threshold β, and the preco...

Embodiment 2

[0095] In this embodiment, an uplink CL-MIMO system in FDD mode is taken as an example to describe another method for selecting a transmission resource at a receiving end provided by the present invention. Such as figure 2 As shown, in this embodiment, the receiving end is BS1, the sending end is the local cell MS1, the interfering cells MS2 and MS3, and so on. The base station of MS1 is BS1, and the base stations of MS2 and MS3 are BS2. It is assumed that both BS1 and BS2 preset K precoding codebooks (K is greater than or equal to 2). Due to the variability of the channel, BS1 and BS2 need to rotate the precoding codebook at intervals, and the rotation time may be one or more transmission frames, or one or more TTIs. Assuming that at the Tth TTI time, the precoding codebook of BS1 is C 1 , the precoding codebook corresponding to BS2 is C 2 .

[0096] The concrete realization of the embodiment of the present invention can be:

[0097] Step 1: BS1 presets the interferenc...

Embodiment 3

[0125] The method for selecting transmission resources at the receiving end provided by the embodiments of the present invention is described above in conjunction with specific embodiments. The following describes the receiving end provided by the embodiment of the present invention in combination with the method provided by the embodiment of the present invention. see Figure 5 , Figure 5 A structural schematic diagram of a receiving end provided in this embodiment, the receiving end device may include:

[0126] The measuring unit 501 is used to measure the channel of the own cell and the interference channel of the own cell on all sub-bands;

[0127] The interference level calculation unit 502 is configured to select at least two sub-frequency bands according to the channel of the local cell, and select a sub-frequency band from the at least two sub-frequency bands, and calculate the interference equivalent channel of the local cell and the adjacent cell on the sub-freque...

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Abstract

The embodiment of the invention discloses a receiving-end transmission resource selection method, a receiving-end transmission resource selection device and a communication system. The method comprises the following steps: measuring a cell channel and a cell interference channel of all sub-bands by the receiving end, selecting at least two sub-bands according to the cell channel, selecting one sub-band from at least two sub-bands, obtaining a maximal horizontal interference value by calculating horizontal interference values among an interference equivalence channel of the cell and the equivalence channels of all users of a neighboring cell, and determining whether to send data in the sub-band by the maximal horizontal interference value and the interference threshold value. The method, the device and the communication system provided by the embodiment can effectively control the interference between the neighboring cells in an uplink closed-loop multi-input and multi-output system, promote the utilization rate of a frequency spectrum and improve the performance of an edge user.

Description

technical field [0001] The embodiments of the present invention relate to the field of communication technologies, and in particular to a method, device and communication system for a receiving end to select transmission resources. Background technique [0002] At present, in order to enhance the anti-jamming performance of mobile communication systems, MIMO (Multiple Input Multiple Output) technology is widely used in the third generation mobile communication system (3G, the 3rd Generation Mobile Communication) or the fourth generation mobile communication System (4G, the 4th Generation Mobile Communication) wireless communication system. MIMO technology refers to the use of multiple transmitting antennas and receiving antennas at the transmitting end and receiving end, respectively, and the transmission and reception of signals through multiple antennas at the transmitting end and receiving end, which can improve the data transmission rate and / or bit error rate. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/04H04B7/26H04L1/06
Inventor 常欣卢毅司宏杰
Owner SHANGHAI HUAWEI TECH CO LTD
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