Access level control method and system

Abstract

The invention discloses an access level control method, wherein a base station adds a parameter relative to access probe initial power adjustment in an access parameter message; a terminal selects corresponding access probe initial power adjustment parameter in the access parameter message according to own level and service type needing to be initiated, calculates transmitting power of the accessprobe, and transmits the access probe according to the calculated transmitting power. The invention further correspondingly discloses an access level control system. The invention can transmit the access probe for the user with high priority and the service with high demand on time delay through higher power so that the access speeds of the user with high priority and the service with high demandon time delay are improved and the collision probabilities of the user with low priority and the service with low demand on time delay are reduced; therefore, the invention can improve the terminal access success ratio and improve the access speed.

Description

technical field [0001] The present invention relates to wireless communication system access technology, in particular to an access level control method and system. Background technique [0002] In a wireless communication system, before establishing a service connection between a terminal and the system, the terminal first sends information necessary for establishing a service connection on a common channel (ie, an access channel) to apply for a communication channel. When the terminal needs to access, it will send a series of access probes for access attempts. Each access probe includes a prefix part and a data part, wherein the data part is one or more physical layer packet data packets. The prefix part of the access probe corresponds to a pilot channel of the access channel, and the data part corresponds to a pilot channel and data channel of the access channel. figure 1 is a schematic diagram of the access probe structure of the access channel, such as figure 1 As sho...

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Problems solved by technology

Therefore, if the base station can successfully demodulate each time the terminal sends a test, then the access time is the shortest, and it can also reduce the chance of collision with other terminals, that is, increasing the transmission power of the user access test can accelerate the user's access time. Access, however, in existing systems such as HRPD, all users in the same cell use the same set of parameters for access channel power parameters, so when a terminal accesses, it has a greater chance of colliding with other terminals, which affects the access speed , and, for a self-interference system such as CDMA, when each user transmits an access probe with a higher power, it will cause greater interference between users, thereby affecting the access success rate

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