Random access method, base station and terminal

Abstract

The invention discloses a random access method, a base station and a terminal, belonging to the technical field of communication. The method comprises the following steps that: the base station receives an uplink random access message transmitted by the terminal; the base station transmits a downlink random access message to the terminal on a protected subframe, thereby enabling the terminal to access to the base station. The base station comprises a receiving module and a transmitting module. The terminal comprises a transmitting module and a receiving module. The downlink random access message is transmitted to the terminal via the protected subframe, in this way, the aim of reducing the downlink interference of an encroaching base station to the base station while accessing is realized, in comparison with the prior art, the technical method of the embodiment of the invention can make the terminal be free from the downlink interference in the random access competition and the random access process, the access success rate is improved, and the communication performance is also improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a random access method, a base station and a terminal. Background technique [0002] In a network with inter-cell interference, take an LTE (Long Term Evolution, Long Term Evolution) heterogeneous network as an example, such as Figure 1a As shown, small base stations, such as micro base stations (Pico), home base stations (HeNB), home base stations (Femto), relay stations (Relay) and other wireless access points are placed within the coverage of a macro base station (Macro eNB). Then, the UE (User Equipment, user terminal) within the coverage of the small base station is under the dual coverage of the Macro eNB and the small base station. Such as Figure 1a As shown, the UE1 under the Pico is interfered by the macro base station, and the UE2 of the macro base station near the HeNB will also be interfered by the HeNB because it has no access right. Generally, the ...

AI Technical Summary

Problems solved by technology

When the UE communicates with its serving cell, it will receive cell signal interference from another base station, especially downlink interference. When the terminal initiates access in the victim cell, it needs to receive the downlink subframe of the cell. If the downlink subframe of the cell happens to be interfered , it will cause the terminal to fail to access because it cannot receive the downlink subframe, which will cause the call to be interrupted and the communication performance to be poor

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