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Scheduling method and device used for interference coordination

A technology of interference coordination and scheduling methods, applied in electrical components, wireless communication, etc., can solve the problems of reducing the performance of edge user equipment and occupying resources of central user equipment

Active Publication Date: 2014-01-08
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide a scheduling method and device for interference coordination, which are used to solve the problem in the prior art that the central user equipment may occupy the resources originally allocated to the edge user equipment during scheduling, thereby reducing the number of edge user equipment. performance issues

Method used

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  • Scheduling method and device used for interference coordination
  • Scheduling method and device used for interference coordination
  • Scheduling method and device used for interference coordination

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Embodiment 1

[0067] Suppose the system bandwidth is 10M. According to the plan, the edge resources allocated to cell 0 are [1-16] PRBs, the edge resources allocated to cell 1 are [17-32] PRBs, and the edge resources allocated to cell 2 are [33-48] PRBs . There is only one edge user equipment and 5 central user equipments in cell 0.

[0068] Firstly, sort the edge user equipments to be scheduled. Since there is only one edge user in this example, this link is omitted. The number of edge user equipment to be scheduled edge ue_num with parameter Threshold edge_ue_num For comparison, select the number of edge users who will eventually participate in the scheduling edge ue_num_schdl =min{edge ue_num ,Threshold edge_ue_num}. Similarly, the central user equipments to be scheduled are sorted to determine the sequence of the central user equipments finally participating in the scheduling.

[0069] Next, resource allocation is first performed on the edge user equipment. It is assumed that t...

Embodiment 2

[0071] Suppose the system bandwidth is 10M. According to the plan, the edge resources allocated to cell 0 are [1-16] PRBs, the edge resources allocated to cell 1 are [17-32] PRBs, and the edge resources allocated to cell 2 are [33-48] PRBs . There are five edge user equipments in cell 1, and only one central user equipment.

[0072] Firstly sort the user equipments to be scheduled, and count the number of edge user equipments to be scheduled edge ue_num =5 and parameter Threshold edge_ue_num = 4 for comparison, select the first 4 edge user equipments in the sorted edge user equipment list for subsequent scheduling. There is one central user equipment participating in this scheduling. In actual scheduling, after allocating resources to the above four edge user equipments in sequence, start to allocate resources to the central user equipment.

Embodiment 3

[0074] Suppose the system bandwidth is 10M. According to the plan, the edge resources allocated to cell 0 are [1-16] PRBs, the edge resources allocated to cell 1 are [17-32] PRBs, and the edge resources allocated to cell 2 are [33-48] PRBs . The number of edge user equipments in cell 2 is 5, and the number of central user equipments is 15.

[0075] First sort the edge user equipment waiting to be allocated, and count the number of edge users waiting to be dispatched ue_num =5 and parameter Threshold edge_ue_num = 4 for comparison, select the first 4 edge user equipments in the sorted edge user equipment list for subsequent scheduling. Sort the central user equipments that subsequently participate in the scheduling.

[0076] In actual scheduling, after allocating resources to the above four edge user equipments in turn, resource allocation is performed on the remaining 15 central user equipments according to a pre-arranged order. After the allocation of resources to the ab...

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Abstract

The embodiments of the present application relate to the field of wireless communications, specifically to a scheduling method and a device for interference coordination, used to resolve the problem in the present art that during scheduling, cell center user equipment (UE) may occupy resources originally allocated for cell edge UEs, thereby reducing cell edge UE performance. The method of the embodiments of the present application comprises: determining which cell edge UEs and cell center UEs require scheduling; allocating resources for the determined cell edge UEs; and after allocating resources for cell edge UEs, allocating resources for confirmed cell center UEs. The scheduling first of cell edge UEs and subsequently of cell center UEs averts a situation wherein center cell UEs occupy resources originally allocated for cell edge UEs, thus improving performance for cell edge UEs.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a scheduling method and equipment for interference coordination. Background technique [0002] LTE (Long Term Evolution, long-term evolution) system adopts OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) technology, which solves intra-cell interference better than CDMA (Code Division Multiple Access, Code Division Multiple Access) technology The problem. But as a price, the inter-cell interference problem brought by the OFDM system is more serious than that of the CDMA system. The basic idea of ​​inter-cell interference coordination is to limit the use of edge user resources through inter-cell coordination, including limiting which time-frequency resources are available, or limiting the transmit power on certain time-frequency resources to avoid and reduce interference , for the purpose of ensuring the edge co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04W72/12
CPCH04W72/1231H04W72/542
Inventor 徐昊寇会如
Owner DATANG MOBILE COMM EQUIP CO LTD