Random access method, network control unit, base station unit and user terminal

A user terminal, random access technology, applied in the field of base station unit and user terminal, random access method, network control unit, to achieve the effect of allocating and realizing random access resources

Inactive Publication Date: 2009-01-07
TD TECH COMM TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, currently only the uplink synchronization resources on the main carrier are used for uplink random access, and no random access resource allocation is performed on the auxiliary carrier. Therefore, ho

Method used

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  • Random access method, network control unit, base station unit and user terminal
  • Random access method, network control unit, base station unit and user terminal
  • Random access method, network control unit, base station unit and user terminal

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Embodiment Construction

[0057] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0058] figure 1 It is an exemplary flowchart of a random access method in a multi-carrier system in an embodiment of the present invention. Such as figure 1 As shown, the process includes the following steps:

[0059] Step 101, pre-configure the mapping relationship between SYNC_UL, FPACH and PRACH and / or E-RUCCH on each effective carrier in the multi-carrier system, and notify the user terminal of the configured mapping relationship.

[0060] Wherein, the effective carrier refers to a carrier that can be used for random access, including a main carrier and an effective auxiliary carrier. And when notifying the user terminal of the configured mapping relationship, the configured mapping relationship may be notified to the user terminal through a broa...

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Abstract

The invention discloses a random access method of a multi-carrier system. In the random access method, every effective carrier in the multi-carrier system is pre-equipped with mapping relationship between an uplink synchronization code, a fast access indication channel and a physical random access and/or a reinforced random access channel, a user terminal is notified of the mapping relationship, and the uplink synchronization code from the user terminal is received; according to the equipped mapping relationship, the fast access indication channel corresponding to the uplink synchronization code is selected to respond to the indication information from the user terminal, and random access information from the user terminal is received on the physical random access or the reinforced random access channel. Furthermore, the invention also discloses a random access-to-network control unit of the multi-carrier system, a base station unit and the user terminal. The technology proposal of the invention can realize distribution of random access resource in the multi-carrier system.

Description

technical field [0001] The present invention relates to mobile communication technology, in particular to a random access method, a network control unit, a base station unit and a user terminal in a multi-carrier system. Background technique [0002] In a Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, when a user terminal (UE) establishes a network connection, it first sends an uplink synchronization code (SYNC-UL) to the network side, and the network side, according to the received SYNC-UL, Select the corresponding fast access indication channel (FPACH) to respond to the indication information to the UE. After receiving the FPACH response, the UE sends a message with relevant information on the physical random access channel (PRACH) corresponding to the indication information according to the indication information. True random access messages. A random access channel (RACH) is mapped to one or more PRACHs, and the RACH capacity can be flexibly ...

Claims

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Application Information

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IPC IPC(8): H04Q7/38H04B7/26H04J13/02H04W74/08
Inventor 沈东栋贺刚宋爱慧王浩然常永宏陈迎
Owner TD TECH COMM TECH LTD
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