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A kind of resource allocation method and device of downlink control channel in LTE system

A control channel resource and control channel technology, which is applied in the field of downlink control channel resource allocation, can solve problems such as location conflicts and limited available locations of terminals, and achieve the effects of reducing impact, improving utilization rate, and increasing the number of scheduled users

Inactive Publication Date: 2020-04-21
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, for a single subframe, the number of CCEs is fixed, and the available positions of each terminal are limited. It is inevitable that there will be position conflicts. How to minimize the probability of user / terminal CCE collisions and increase the number of terminals / UEs scheduled in a single subframe (The number of users is used below), improving the PDCCH resource occupancy rate has become a problem that needs to be solved at present

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  • A kind of resource allocation method and device of downlink control channel in LTE system
  • A kind of resource allocation method and device of downlink control channel in LTE system
  • A kind of resource allocation method and device of downlink control channel in LTE system

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Embodiment Construction

[0052] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented.

[0053] It should be noted that in this article, the words "first", "second", "third", and "fourth" are only used to distinguish the same names, not to imply the relationship between these names or order.

[0054] The "user" used in this application refers to user equipment or terminal, and for the convenience of description, "user" is used in this application.

[0055] In addition, the "schedulable user priority order list", "total number of available CCEs", "available CCE resource map", and "available aggregation level" mentioned in the embodiment of the present invention ar...

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Abstract

The invention discloses a resource allocation method and device for a downlink control channel in an LTE system. The method includes: when allocating downlink control channel resources, according to the user priority order list that can be scheduled in the current subframe and the user priority order list in the subframe The total number of available CCEs determines the number N of UEs to be scheduled in the priority scheduling list; for the first N UEs in the user priority order list, obtains the CCE occupancy statistics table corresponding to the first N UEs; according to the first N UEs The priority order of the CCEs and the CCE occupancy statistics table are used to allocate downlink control channel resources to some or all of the first N UEs by using the least conflicting position method; wherein, N is a natural number greater than or equal to 1. The method of the invention can increase the number of UEs scheduled in a single subframe of the system and the utilization rate of the PDCCH.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a resource allocation method and device for a downlink control channel in an LTE system. Background technique [0002] At present, the PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel) carrying control information such as scheduling grants in the LTE system, in the first n OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) symbols of time slot 0 of each downlink subframe Above, these symbols are composed of REs (Resource Elements, resource units), 4 REs form 1 REG, and 9 REGs form a CCE (Control Channel Element, control channel unit). The CCEs are numbered from 0 in the order of frequency bands from low to high and symbols from small to large. The total number of CCEs is different in different system configurations and different subframes. [0003] CCE is the basic bearing unit of control inform...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04W72/10
CPCH04W72/56H04W72/23
Inventor 安思麒
Owner POTEVIO INFORMATION TECH CO LTD