Method and apparatus for parallel realizing CDMA circuit data and voice business

Abstract

This invention discloses a parallel realizing method and equipment for CDMA circuit data and speech service including communication controller connected with programmable logic devices, network interface units and data communication via three data buses and address bus for data interaction; the said programmable logic devices receive data from DSP array 1,2 and synthesize HW time slot signal with the relay interface unit and make synchronous clock adjustment according to DSP clock requirement; the said DSP array 1,2 transfer data and signaling with the said data communication interface unit via common used data bus and address bus.

Description

technical field [0001] The invention relates to a code division multiple access (CDMA) system, in particular to a parallel implementation method and equipment for low-speed circuit data services (mainly including G3 fax and asynchronous data services) and voice services in the CDMA system. Background technique [0002] In wired and wireless communication services, both now and in the future, circuit data services and voice services are the most important services. But the characteristics of the two are different, and the treatment methods for the two are also different. Circuit data services are highly bursty and are not sensitive to transmission and processing delays. The amount of transmitted data varies greatly depending on the type of business negotiation; while voice services are transmitted in frames with a cycle of 20ms, which is not sensitive to transmission and processing delays. Sensitive, due to the use of the variable bit rate vocoder algorithm, the amount of da...

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Problems solved by technology

In this method, the voice service is transferred to the circuit data service, and the processing flow will be more complicated; and from the perspective of hardware implementation of the device, as two resources, they are not completely independent, but they are not completely one-to-one. The physical connection of the terrestrial link is more complicated, and the solutions include: one solution is to fix the corresponding relationship between the two resources according to a certain ratio, and the physical connection of the two resources is also relatively fixed. Behind these resources, one level of switching and corresponding resource allocation control needs to be added, the physical structure is complex, the integration level is low, the equipment cost is high, and the stability of the system is reduced; another solution is that the ground link is still from the vocoder resource The side is connected to the MSC, the transmission and reception of the circuit data service on the ground link side is still completed at the vocoder, and the signal processing part with the air is processed at the circuit data service resource. The disadvantage of this method is that it will inevitably lead to two Increased data traffic between resources

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