Method and system for randomly accessing relay station

Abstract

The invention discloses a method and a system for randomly accessing a relay station (RS). The method comprises the following steps: a base station selects a non-competitive random access lead code indedicated non-competitive random access lead codes in a concentrating manner, distributes the non-competitive random access lead code to the relay station, sends a downlink signal to the relay station, notifies the distributed non-competitive random access lead code, and receives a non-competitive random access request message which is in uplink transmission by the relay station on an uplink of arandom access channel, wherein, the non-competitive random access request message comprises a non-competitive random access lead code, carries out the random access response on the relay station, andsends a downlink signal of the random access response to the relay station. By the above processing, the invention can avoid the condition that the RS occupies the resources of cell public random access, simplify the process of random access, and reduce access time delay, thus effectively improving the efficiency of the RS random access.

Description

technical field [0001] The present invention relates to the communication field, and in particular, relates to a random access method and system for a relay station. Background technique [0002] At present, the goal of the new generation of wireless communication networks is to integrate access systems such as cellular, fixed wireless access, nomadic, and wireless area networks, and combine with an all-IP network to provide users with a peak rate of up to 100 Mbps in high-speed and low-speed mobile environments. Bits per second (Mbps) and 1 gigabit per second (Gbps) wireless transmission capability. In order to achieve this goal, the wireless communication network needs to provide services to users in a wide range of high-band spectrum. Due to the wireless propagation characteristics of electromagnetic waves, wireless communication systems operating at high frequencies can obtain high capacity on the one hand, but are also limited by limited coverage on the other hand. ...

AI Technical Summary

Problems solved by technology

[0013] Considering that the contention-based random access method used by RS in the random access process will occupy the common random access preamble resources of the cell, the processing process is cumbersome and the delay is large, and the random access of UEs in the area will be affected in the case of collision. Therefore, the main purpose of the present invention is to provide a non-competitive random access method for relay stations and a random access system for relay stations, so as to solve the above-mentioned problems existing in contention-based random access methods

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