A traffic dispersion-based group paging method that can achieve stable throughput
A group paging and throughput technology, applied in the field of group paging, can solve the problems of reduced resource utilization and throughput, achieve stable throughput, increase the number of accessible devices, and avoid network congestion
Active Publication Date: 2021-09-28
XIDIAN UNIV
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However, since this solution only considers the case where the average number of preamble-detected devices is less than the number of physical downlink control channel resources, in reality there is a possibility that the average number of preamble-detected devices is greater than the number of physical downlink control channel resources, so when paging When the interval is long and the number of devices is large, the throughput of this solution will still decrease, resulting in a decrease in resource utilization
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[0028] The implementation and effect of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific examples, so that those skilled in the art can better understand the present invention and implement it, but the given examples are not intended to limit the present invention .
[0029] This example assumes that there are N MTC devices in the cell, and the base station can page all devices in the cell by sending a paging message. The number of initial access devices assigned to each random access slot uses the dispersion factor M sf express. The parameters of the network configuration are: the number of available preambles is R, and the preamble detection time is T RAR , the length of the random access response window is W RAR , the random access slot period is T RA , the maximum number of preamble transmissions is The number of physical downlink control channel resources is N ACK . In addition, the preamble...
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The invention discloses a flow dispersion-based group paging method capable of realizing stable throughput, and mainly solves the problem in the prior art that wireless access network congestion is easily generated when a large number of MTC devices are simultaneously connected to the network. The implementation scheme is as follows: 1) The base station fully considers three types of physical downlink control channel resources that are less than the number of devices successfully detected by the preamble, equal to the number of devices successfully detected by the preamble, and greater than the number of devices successfully detected by the preamble according to the parameters configured in the network. 2) The base station obtains the total number of groups according to the optimal distribution factor, and sends a paging message; 3) The paged MTC device performs group access according to the total number of groups. The present invention evenly disperses MTC devices to different random access time slots to perform a random access process through the optimal dispersion factor, avoids network congestion caused by simultaneous access of massive devices, realizes the maximum stable throughput, and can be used for machine types Communication MTC devices randomly access the network.
Description
technical field [0001] The invention belongs to the technical field of communication, and further relates to a group paging method, which can be used for machine type communication (MTC) equipment to randomly access a network, realize throughput stabilization, and increase the number of accessible equipment. Background technique [0002] Machine Type Communication MTC communication is widely used in smart grid, industrial automation, and electronic medical treatment. In the future, the number of MTC devices will further increase. If a large number of MTC devices are connected to the network at the same time, it will cause system overload and network congestion, which will seriously affect system performance. The group paging method is an effective overload control scheme proposed by 3GPP. In this scheme, after the base station sends a paging message, a group of MTC devices to be paged will access in the next random access time slot. Because the base station can decide when ...
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IPC IPC(8): H04W28/02H04W72/04H04W74/00H04W74/08
CPCH04W28/0215H04W74/0833H04W74/006H04W72/51
Inventor 严蕾张锐李勇朝阮玉晗
Owner XIDIAN UNIV