Voice speed control method in CDMA communication system

Abstract

The method includes steps: (1) after UE initiates access request for MSC, MSC sends request message of wireless access load bearing assignment to RNC; (2) based on loaded condition of subzone of UE accesses, RNC selects speech rate for the UE; (3) being obtained information of speech rate in assignment message, UE returns message of completing the assignment back to RNC; (4) RNC sends message of completed the assignment to MSC; the message includes selected information of speech rate; being received the message, MSC obtains information of speech rate; (5) based on received information of speech rate, UE and MSC carry out transmission of speech respectively. Without use of signaling mode to carry out control for speech rate, the invention saves consumption on transmitting and processing lot of message so as to reduce system load.

Description

technical field [0001] The invention relates to the field of mobile communication voice rate control, in particular to a voice rate control method in a code division multiple access communication system. Background technique [0002] In wireless communication technology, spectrum resources are relatively precious resources. How to transmit data more effectively has always been the focus of research by communication scientists, and source coding is one of the directions. In the wideband code division multiple access communication system, adaptive multi-rate speech coding (AMR) technology is adopted for speech, and 12.2kbps, 10.2kbps, 7.95kbps, 7.4kbps, 6.7kbps, 5.9kbps, 5.15kbps, 4.75kbps can be used for speech There are 8 rate modes in kbps, and silent mode (SID) and no data mode (No Date) are not included here. In the wideband code division multiple access communication system, the voice rate is realized through the selection of the transmission format group and (TFC). How...

AI Technical Summary

Problems solved by technology

[0041] In the prior art, after the radio bearer (RB) is established, the UE's existing rate selection method is not used in the uplink direction;

[0042] And because the signaling in the confirmation mode is adopted in both the uplink direction and the downlink direction, the signaling causes a large amount of message transmission and processing consumption during the transmission process, which increases the burden on the system;

[0043] In addition, because the existing technology uses the transmit power as the trigger condition for the adjustment mode, the users in the cell that are far away from the base station usually have their voice rate reduced first due to poor channel conditions, especially during peak traffic periods when they are closer to the base station Since the user does not reduce the voice rate, the interference to the user far from the base station is not reduced, so the voice service quality of the user far away from the base station is seriously degraded

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