Method, system and equipment of random access

Abstract

The invention provides a method, a system and equipment of random access. The method comprises the following steps: a base station receives a random access pilot sequence sent by user equipment (UE); the base station sends a random access response to the UE according to the random access pilot sequence; the base station receives a scheduling transmission message sent by the UE and judges the capacity of the UE according to the scheduling transmission message, wherein the capacity of the UE comprises UE of LTE or UE of LTE-A; and the base station sends a contention resolution message to the UEaccording to the scheduling transmission message. The method, the system and the equipment of the invention can divide UE of LTE and LTE-A in the network in the initial establishment stage of UE connection, thereby being convenient for subsequent operation of the network and reducing the time delay of random access.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a random access procedure. Background technique [0002] LTE-A (Long Term Evolution-Advanced) is an evolution system of LTE (Long Term Evolution, long-term evolution), it can provide larger bandwidth, higher peak rate, smaller delay, etc. The LTE system is compatible, that is to say, an LTE-A UE (User Equipment, user equipment) must be able to work in an LTE network, and meanwhile an LTE UE must also be able to work in an LTE-A network. In LTE-A, the delay requirement for the UE to transition from Idle to Connected state is less than 50ms, while LTE is less than 100ms. In this way, the network needs to distinguish whether the UE is LTE-A or LTE when the UE accesses, so as to provide subsequent services to it. [0003] The current random access process of LTE is the same for TDD (Time Division Duplex, time division duplex) and FDD (Frequency Division Duplex, frequen...

AI Technical Summary

Problems solved by technology

[0021] In the existing technology, when a UE accesses, it cannot distinguish whether the UE is LTE or LTE-A. In this way, the network cannot know the version of the UE, and it cannot provide information to the UE immediately after successful access according to the version of the UE. For the corresponding service, only after the UE accesses, the network obtains the version of the UE through the UE capability query process

In addition, in the prior art, the network can only treat all accessed UEs as LTE UEs. In this way, for the initial access process, due to the use of contention-based random access, there will be a relatively large time Delay, which is not conducive to meeting the delay requirements of LTE-A for the transition from Idle to Connected state, that is, less than 50ms

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