Random access method and pilot code extending method

Abstract

The invention provides a random access method, comprising that receiving an ascending pilot code sent from terminal, confirming the type of the received code, when the code is strengthen random access pilot code, sending a strengthen quick physical access channel message to the terminal, when the code is common random access pilot code, sending a common quick physical access channel message to the terminal. The invention can reduce the impact possibility between strengthen random access and common random access when processes random access, and reduce calculation. The inventive also provides an expansion method of pilot code, which rotates the pilot code to obtain an expanded pilot code, while part bits of the expanded pilot code can be turned further. Via the expansion of the pilot code, the invention can confirm the system can easily extinguish terminal access type at the start of terminal access, to reduce system consumption of whole access.

Description

technical field [0001] The invention relates to the communication field, in particular to a random access method and a pilot code extension method. Background technique [0002] High Speed ​​Uplink Packet Access (HSUPA, High Speed ​​Uplink Packet Access) is a technology developed for the transmission of high-speed uplink data in third-generation mobile communications, and can be used to provide a complete 2000 International Mobile Communications Standard (IMT2000, International Mobile Telecommunications 2000 ) Multimedia, video streaming and other IP services required. [0003] When the user equipment (UE, User Equipment) sends data to the system, it will adopt the HSUPA enhancement technology. As shown in FIG. 1 , since whether the UE can send data to the system is controlled by the system, the UE needs to send an access request to the system before sending data to the system. When the system (such as NodeB) determines that the UE can send data, it will allocate available...

AI Technical Summary

Problems solved by technology

Since the probability of occurrence of enhanced random access is relatively high, and enhanced random access and normal random access use the same SYNC_UL code, therefore, the probability of collision between enhanced random access and normal random access will inevitably increase

[0013] 2. Inflexible resource allocation

Since the system cannot distinguish between enhanced random access and normal random access through the SYNC_UL code, the TTI of the E-RUCCH message is required to be less than or equal to the TTI of the PRACH message, which will inevitably result in a certain waste of resources and inflexible resource allocation.

[0014] 3. The amount of calculation is relatively large

Since the system needs to perform both E-RUCCH decoding and PRACH decoding in order to determine the type of message transmitted on the physical channel when receiving data, so when the UE sends a normal random access request, two decoding processes must be performed. Increase the amount of computation

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