Group paging congestion control method based on ACB mechanism
A congestion control and group paging technology, applied in machine-to-machine/machine-type communication services, network traffic/resource management, electrical components, etc., and can solve problems such as network congestion, large number of M2M devices, and reduced network performance. Achieve the effect of reducing access delay, improving access success rate, and reducing equipment conflicts
Active Publication Date: 2019-08-09
ARMY ENG UNIV OF PLA
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Problems solved by technology
In the LTE-A network, due to the large number of M2M communication devices, small data, and strong bursts, when large-scale M2M devices access the base station at the same time, it will cause network congestion and seriously reduce network performance.
[0004] The existing group paging congestion control method usually uses the group paging method to group devices, and then paging the groups to limit the number of connected devices
However, even after the ACB mechanism is introduced in this method, the number of M2M devices simultaneously accessing the network is still quite large
Method used
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[0020] Such as figure 1 Shown, a kind of group paging congestion control method based on ACB mechanism, comprises the following steps:
[0021] Step 1. Disperse the devices to be connected: such as figure 2 As shown, the base station evenly distributes the devices waiting to be accessed in the cell throughout the entire paging cycle, so as to avoid too many devices simultaneously accessing and causing congestion. The specific steps are:
[0022] Step 1.1. Calculate the number of random access time slots in the paging cycle: the base station calculates the paging time slot according to the group paging parameters, including the maximum number of transmissions of the device, the processing delay of the base station, the response window, the back-off window and the interval between consecutive random time slots The number of random access slots in a period, the calculation formula is:
[0023]
[0024] In the above formula Indicates the maximum number of preamble transmis...
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The invention discloses a group paging congestion control method based on an ACB mechanism. The group paging congestion control method specifically comprises the following steps that: a base station uniformly distributes equipment waiting to be accessed in a cell in a whole paging period; dynamically adjusts the ACB parameters; and the base station judges the to-be-accessed equipment according tothe ACB mechanism, and further controls the number of the equipment simultaneously accessed in the time slot. Competition-based random access is initiated through the judged equipment, an access process is completed, failed equipment is judged, and judgment is performed again after the random time is returned. The invention can effectively improve the network performance and the equipment accesssuccess rate.
Description
technical field [0001] The invention belongs to machine communication technology, in particular to an ACB mechanism-based group paging congestion control method. Background technique [0002] The existing cellular network is mainly designed for Human-to-Human (H2H) communication. Since M2M communication has many differences compared with H2H communication, the existing cellular network cannot adapt to M2M business well. communication needs. [0003] With the development of M2M communication, the number of M2M devices has increased sharply. When a large number of devices request access to the base station at the same time and compete for limited wireless resources, it will cause network congestion and even cause network paralysis, which will not only affect large-scale M2M communication. The success rate will also reduce the normal communication quality of H2H communication. The main traffic characteristic of M2M communication is that a large number of nodes transmit messag...
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IPC IPC(8): H04W4/06H04W4/70H04W28/02H04W74/08
CPCH04W4/06H04W28/0289H04W74/0833H04W4/70
Inventor 王聪魏成强李宁马文峰田辉
Owner ARMY ENG UNIV OF PLA