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Method for implementation of random accessing and base station

A random access and base station technology, applied in the field of communication, can solve problems such as high computational complexity of base stations, misjudgment of base station reception sequences, and reduced system performance, and achieve the effects of reducing implementation complexity, efficient implementation, and reducing information bits

Active Publication Date: 2008-06-18
DATANG MOBILE COMM EQUIP CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, if more preamble sequences are allocated to a cell, the calculation complexity of the base station is also greater, and the judgment time is longer.
At the same time, too many preamble sequences will easily cause the base station to misjudge the received sequence, thereby reducing the performance of the system

Method used

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  • Method for implementation of random accessing and base station
  • Method for implementation of random accessing and base station
  • Method for implementation of random accessing and base station

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Experimental program
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Embodiment Construction

[0052] First of all, briefly explain the principle that the technical solution provided by the present invention can be realized.

[0053] Usually, the preamble sequence needs to carry information such as the access reason, the channel quality of the random access, and the random sequence number to notify the base station. The preamble sequence carries channel quality information, mainly to inform the base station of the channel status at this time, and the base station allocates reasonable channel resources for information 2 and information 3 according to the channel quality information, and optimizes channel resource configuration. For the TD-SCDMA broadband time division duplex cellular system, the characteristics of the TDD system can be utilized to further reduce the number of preamble sequences allocated by the cell, but the performance of the one-step random access method will not be affected.

[0054] Because TDD has the characteristic of channel symmetry, that is, the...

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Abstract

The invention provides a random access method, including: a leader sequence of a random access sent out by a terminal is detected; the quality of a channel is measured, according to the leader sequence; based on the information of the channel quality measurement, relevant information of transmitting channel resource is distributed for the terminal; information, sent out by the terminal, of requiring a random access is received. Meanwhile, the invention also provides a base station, including: a detecting unit used for detecting the leader sequence of the random access sent out by the terminal, a measuring unit used for measuring the channel quality according to the leader sequence, a resource distribution unit used for distributing relevant information of transmitting channel resource for the terminal according to the channel quality measurement information, and a receiving unit used for receiving the information of requiring the random access sent out by the terminal. The invention has the advantages that through measuring the channel quality of the leader sequence, information bit carried by the leader sequence and the amount of the leader sequence can be reduced, thus realizing a random accessing process rapidly and efficiently.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method for realizing random access and a base station. Background technique [0002] Time Division Synchronization Code Division Multiple Access (TD-SCDMA, Time-Division Synchronization Code Division-Multiple-Access) is the only system that adopts Time Division Duplex (TDD: Time Division Duplex) among the three major international standards of the third generation mobile communication system . The system supports uplink and downlink asymmetric service transmission, and has greater flexibility in spectrum utilization. [0003] In the evolution scheme of the TD-SCDMA system, in order to obtain high-speed, large-capacity services, it needs to occupy a wider bandwidth, which is called a broadband time-division duplex cellular system. In the broadband time division duplex cellular system, the downlink modulation method may adopt an Orthogonal Frequency Division Multiplexing (OFDM...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04B17/00H04J13/02H04W72/54H04B1/707H04W74/08
Inventor 孙韶辉王映民索士强
Owner DATANG MOBILE COMM EQUIP CO LTD
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