Processing method in random access process and terminal device for random access

Abstract

The invention discloses a processing method in a random access processing and a terminal realizing random access. A terminal device judges whether the first step access is the first step access of another entering. If so, the power of the bougies being about to be sent out accessed in the first step are confirmed according to the access bougies successfully sent out at last time; or not, the power of the access bougies being about to be sent out are confirmed according to the initial power and finally the access bougies are sent out to the network side with the confirmed power. In the invention, when the terminal device renewedly carries out the first step access caused by the failure of the second step access, the terminal device does not send out a plurality of access bougies to the network side based on the initial power like the existing mode, but sends out the access bougies by selecting suitable power to lead the access bougies sent out by the terminal device can be recognized by the network side as soon as possible thereby having shortened the time for a terminal device to access into a wireless communication network so as to realize the rapid access of the terminal device.

Description

technical field [0001] The present invention relates to random access technology, in particular to a processing method in the process of random access and terminal equipment for realizing random access. Background technique [0002] The physical layers of Institute of Electrical and Electronics Engineers (IEEE) 802.16 and IEEE 802.20 both adopt Orthogonal Frequency Division Multiplexing (OFDM) and Orthogonal Frequency Division Multiple Access (OFDM) Multiplexing Address, OFDMA) technology. OFDM technology is a special multi-carrier modulation technology. There is a 1 / 2 overlap between subcarriers, but they are all orthogonal to each other. The network side can separate these mutually orthogonal subcarriers through correlation demodulation technology. Constitute an efficient data transmission network. The OFDMA network uses the OFDM technology as a multiplexing technology, and distinguishes different terminal devices by assigning different subcarriers to different terminal ...

AI Technical Summary

Problems solved by technology

Unsuccessful access in the second step usually includes two situations: due to the collision with the orthogonal code of other terminal equipment during the first step of access; due to the deterioration of the wireless link quality when transmitting the connection open request or connection open response

[0017] To sum up, in the process of accessing the wireless communication network in two steps, if the second step is not successful, even if the first step is successful, the first step needs to be re-executed, and the second step is executed again. One-step access still starts from the initial power based on open-loop estimation, and then tries to make the first step of access by continuously sending access probes to the wireless communication network, which will inevitably lead to the terminal device accessing the wireless communication network. The network time is too long, which is not conducive to the rapid access of terminal equipment

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