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Method for identifying random access of time-division synchronous CDMA system

A random access and code division multiple access technology, applied in the field of wireless communication, can solve problems such as different processing, save system resources, avoid complex upgrades, and improve backward compatibility.

Inactive Publication Date: 2012-07-25
田茹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since various random access methods are processed differently on the network side, Node B on the network side needs to identify different services when receiving information on the random access channel, and there is currently no effective method

Method used

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  • Method for identifying random access of time-division synchronous CDMA system
  • Method for identifying random access of time-division synchronous CDMA system
  • Method for identifying random access of time-division synchronous CDMA system

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Embodiment Construction

[0043] Below in conjunction with accompanying drawing, the present invention will be described in further detail:

[0044] The following uses HSUPA access as an example to introduce.

[0045] Step 1, the network side divides the synchronization codes in the cell for accessing different services; when configuring the random access resources of the Node B, the relationship between the PRACH and the FPACH is clarified, and it is related to the system information SIB5 / SIB6 Keep consistent random access resources; when performing cell configuration and reconfiguration for Node B, specify the synchronization code used for accessing different services.

[0046] At present, each cell uses 8 synchronization codes. When the network side divides the synchronization codes, it should depend on the service model in the current network. In the initial stage of HSUPA technology application, when there are relatively few users, a small amount of synchronization codes can be used for HSUPA ran...

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PUM

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Abstract

The invention relates to the distinguishing method of random switch-on of time synchronization code divided multi-address system. The time synchronization code divided multi-address system can not distinguish the random switch-on. To solve the said problem, in the invention when the network distributes the channel source which switches randomly, distinguishing the random switch by synchronizationcode and the random switch of different business can use the different synchronization code. When the network node B detects the synchronization code, and sends the affirming information via the fastphysical switch channel, and records the number of fast physical switching channel, the number of frame in the system and the synchronization code. When the terminal switches via the random channel, the node B finds the relative synchronization record, the switching type can be known by the information of synchronization code, and it is convenient to process. The invention can avoid the upgradingof software / hardware, save the system source, and reach a better compatibility backward.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to an identification method for random access of different services in TD-SCDMA (Time Division Synchronous Code Division Multiple Access System). Background technique [0002] TD-SCDMA technology is one of the main technologies of the third-generation mobile communication system defined by 3GPP. TD-SCDMA has formulated a set of random access procedures for terminal access. This procedure is based on the establishment of uplink synchronization. The terminal and the network side The MAC-c / sh (common shared medium access control) entity and the physical layer cooperate to complete the random access through the uplink pilot channel UpPCH, fast physical access channel FPACH, random access transport channel RACH, and random access physical channel PRACH access. RACH and PRACH are the only random access transmission channel and physical channel resources in the current TD-SCDMA syste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W74/08H04W48/08H04L12/56
Inventor 陈慧张银成马志锋
Owner 田茹
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