PDSCH (physical downlink shared channel) resource distribution method and PDSCH resource distribution system

A physical downlink sharing and channel resource technology, applied in the field of PDSCH wireless resource allocation, can solve the problem of low utilization rate of PDSCH resources, achieve good flexibility, avoid resource waste, and control channel overhead.

Active Publication Date: 2013-10-30
苏州医疗器械产业发展集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to propose a PDSCH resource allocation method and system for the low utilization rate of PDSCH resources in the prior art, which can effectively improve the utilization rate of PDSCH resources

Method used

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  • PDSCH (physical downlink shared channel) resource distribution method and PDSCH resource distribution system
  • PDSCH (physical downlink shared channel) resource distribution method and PDSCH resource distribution system
  • PDSCH (physical downlink shared channel) resource distribution method and PDSCH resource distribution system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] In the following, resource mode and resource quantity are configured for UEs in a certain LTE cell, assuming that the system bandwidth is 5 MHz, that is, 25 RBs are available. There are currently 10 UEs in the scheduling queue in the cell, and the ID numbers are 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 respectively.

[0101] (1) The MAC queues up the 10 UEs and outputs the queue {3, 4, 1, 10, 6, 8, 9, 5, 2, 7}.

[0102] (2) Pre-allocate a certain number of RBs to each UE in the queue according to the UE's buffer information, channel conditions, service types, remaining resources, etc., that is, pre-determine the number of RBs allocated to each UE, represented by Nrb. Assuming that the expanded resources N=5, then the total number of resources that can be allocated at this time is 30. The number of pre-allocated RBs for each UE is as follows:

[0103] Nrb3=7, Nrb4=3, Nrb1=3, Nrb10=6, Nrb6=4, Nrb8=2, Nrb9=3, Nrb5=2, the following UEs have no resources to divide.

[0104] (3) ...

Embodiment 2

[0116] Next, configure the resource mode and resource number for UEs in an LTE cell, assuming that the system bandwidth is 3MHz, that is, 15 RBs are available. There are currently 10 UEs in the scheduling queue in the cell, and the ID numbers are 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 respectively.

[0117] (1) The MAC queues up the 10 UEs and outputs the queue {3, 4, 1, 10, 6, 8, 9, 5, 2, 7}.

[0118] (2) According to the buffer information of the UE, channel conditions, service types, remaining resources, etc., a certain number of RBs are pre-allocated to each UE in the queue, denoted by Nrb. Assuming that the expanded resource N=5, then the total number of resources that can be allocated at this time is 20. The pre-allocation results are as follows:

[0119] Nrb3=5, Nrb4=3, Nrb1=3, Nrb10=4, Nrb6=2, Nrb8=3, the following UEs have no resources to divide.

[0120] (3) Determination and mapping of resource modes:

[0121] 1) After judgment, UE: 4 and 1 are distributed allocation...

Embodiment 3

[0129] Next, configure the resource mode and resource number for UEs in an LTE cell, assuming that the system bandwidth is 3MHz, that is, 15 RBs are available. There are currently 10 UEs in the scheduling queue in the cell, and the ID numbers are 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 respectively.

[0130] (1) The MAC queues up the 10 UEs and outputs the queue {3, 4, 1, 10, 6, 8, 9, 5, 2, 7}.

[0131] (2) According to the UE's buffer information, channel conditions, service types, remaining resources, etc., a certain number of RBs are pre-allocated to each UE in the queue, expressed as Nrb. Assuming that the expanded resource N=5, then the total number of resources that can be allocated at this time is 20. The pre-allocation results are as follows:

[0132] Nrb3=2, Nrb4=4, Nrb1=6, Nrb10=4, Nrb6=1, Nrb8=3, the following UEs have no resources to divide.

[0133] (3) Determination and mapping of resource allocation methods:

[0134] 1) After judgment, UE: 3, 4, and 1 are distribu...

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Abstract

The invention discloses a PDSCH (physical downlink shared channel) resource distribution method. The PDSCH resource distribution method comprises adding N RBs (resource blocks) to the total cell resources on the basis of a full bandwidth of an LTE (long term evolution) system, wherein a value range of the N is 10% to 50% of the number of RBs corresponding to the full bandwidth of the LTE system and N is a natural number; selecting corresponding resource distribution modes according to the mode of a base station mapping RBs to every UE (user equipment), and performing resource location distribution on every UE according to a predetermined number of RBs that every UE in a cell can respectively distribute and priority sequences, which are predetermined by MAC, of every UE. During resource location distribution, UE which uses a distributed mapping mode has the priority in resource distribution. Through the method in the present invention, a wireless resource utilization rate of equipment is effectively improved, and at the same time, resource waste caused by limitation on resource distribution modes can be prevented, and expenditure on channel control is relatively low.

Description

technical field [0001] The present invention relates to the technical field of LTE (Long Term Evolution, Long Term Evolution) wireless network, and in particular to a PDSCH (Physical Downlink Shared Channel, Physical Downlink Shared Channel) wireless resource allocation method and system. Background technique [0002] In a wireless network, wireless resources are extremely precious and must be used effectively to avoid waste. Among the LTE downlink physical channels, the downlink data channel is mainly used to transmit downlink data. All user data, some system broadcast information and paging information that cannot be transmitted on the PBCH (Physical Broadcast Channel, Physical Broadcast Channel) need to be transmitted on the PDSCH ( Physical Downlink Shared Channel, physical downlink shared channel) transmission. [0003] PDSCH resources are allocated in units of RB (Resource Block, resource block). The 3GPP protocol 36.213 stipulates that there are three types of PDSCH...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04
Inventor 苑秋红
Owner 苏州医疗器械产业发展集团有限公司
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