Voice speed control method in CDMA communication system

A communication system and code division multiple access technology, which is applied in the field of mobile communication voice rate control, can solve the problems of not using the rate selection method in the uplink direction, large message transmission and processing consumption, and voice service quality degradation, so as to save message transmission and Effects of processing consumption, reducing system load, and reducing user interference

CN100421366CActive Publication Date: 2008-09-24HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2008-09-24

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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.
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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...

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Embodiment Construction

[0073] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0074] The present invention proposes a voice rate control method in a code division multiple access communication system, the method comprising steps:

[0075] After the UE initiates an access request to the MSC, the MSC sends a RAB assignment request message to the RNC; the RNC selects a voice rate for the UE according to the load status of the UE's access cell, and sends an RB assignment message to the UE, which includes the information selected for the UE. The voice rate information; the UE obtains the voice rate information in the RB assignment message, and returns the RB assignment completion message to the RNC; the RNC sends a RAB assignment completion message to the MSC, which contains the selected voice rate information, and the MSC receives the RAB assign...