Method for adapting GPRS packet channel distribution time

Abstract

An adaptive time distribution method for GPRS packet channel include up and down direction steps of radio channel distribution algorithm, which are similar. For up direction, when PCU receives a packet channel request from a mobile telephone, a PDCH is assigned to it while the data through put counter CU is cleared, and UP TBF is started. During up data transmission, when PCU receives each complete data packet, its length is added to CU. IF CU is greater than a threshold and only one PDCH is assigned to the mobile telephone, try to assign more PDCHs by repeating the said steps until data transmissino is finished. Its advantage is high utilization rate of radio channels.

Description

technical field [0001] The invention relates to a mobile communication system, more specifically to a wireless channel allocation method for providing packet service, and is especially suitable for a general packet radio service (GPRS) system. Background technique [0002] The GSM base station subsystem must introduce a packet control unit (PCU) when supporting GPRS. For the position of the PCU in the GPRS system, the GSM protocol provides three suggestions. In practice, methods B and C are generally adopted. In these two modes, the PCU is responsible for completing the distribution of the packet dedicated channel (PDCH), and the present invention relates to a method for reasonably carrying out PDCH distribution. [0003] In the GPRS system, when the mobile phone performs uplink and downlink packet data transmission, it can occupy 1 to 8 time slots of the wireless air interface, and each such time slot is called a packet dedicated channel (PDCH). The GPRS system also suppo...

AI Technical Summary

Problems solved by technology

[0015] In the uplink direction, due to the requirements of the protocol, the mobile phone must use the same coding method on multiple PDCHs, so in the above case, it is impossible to use the CS-3 coding method, which causes a waste of wireless resources

[0016] 3. The PDCH allocation algorithm itself is relatively complicated

[0017] In the case that multiple mobile phones can share one PDCH, and each mobile phone can occupy multiple PDCHs, the network needs to maintain relatively complex relational tables. When processing and analyzing these relational tables, the process is complicated and the amount of calculation is large.

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