A random access method and a system for realizing random access
A technology of random access and media access layer, which is applied in the field of communication and can solve the problems of inability to feedback random access back-off time from MTC devices, inability to obtain back-off time, and inability to solve network congestion of MTC devices.
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[0058] When the machine type communication equipment (ME) randomly accesses the network, if network congestion causes the ME access failure, the ME needs to reconnect to the network. At this time, the ME needs a longer backoff than the H2H terminal (ordinary terminal). time. When the ME needs to quickly access the network, or the access priority of the ME is higher than that of the H2H terminal, the ME needs a shorter backoff time than the H2H terminal. It can be seen that in practical applications, the ME needs a backoff time for random access that is different from that of the H2H terminal. However, the current base station does not distinguish between terminal types, and does not give different types of terminals a differentiated backoff time. H2H terminals and MTC devices cannot obtain different backoff times, which often leads to network congestion.
[0059] This embodiment proposes to use the existing random access response media access layer packet data unit (RAR MAC PDU)...
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