Reference clock generating method and device for supporting multi-transceiving system
A transceiver system and reference clock technology, applied in the field of communication, can solve problems affecting system performance stability, hardware design complexity, mutual influence of transceiver systems, etc., to achieve the effects of improving system stability, strong flexibility, and reducing production costs
Inactive Publication Date: 2012-04-25
ST ERICSSON SEMICON BEIJING
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Problems solved by technology
[0005] Since two or more sets of reference clocks exist at the same time, it is likely to cause two or more transceiver systems to affect each other, thereby affecting the stability of system performance; and in order to maintain the stability of system performance, it will lead to complex hardware design change
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[0036] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0037] The reference clock generation method supporting multiple transceiver systems and the reference clock generator supporting multiple transceiver systems of the present invention are used for the generation of reference clocks in the multiple transceiver systems and the frequency offset control of each transceiver system, and the terminals of the multiple transceiver systems The device can be a mobile terminal device such as a mobile phone.
[0038] Such as figure 1 and figure 2 As shown, the reference clock generation method supporting multiple transceiver systems of the present invention is used for the generation of the reference clock in the multiple transceiver systems and the frequency offset control of each transceiver system, including:
[0039] Step S1: Obtain an adjusted frequency offset according to a set mapping relationship...
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A generation method for a reference clock of a multi-transceiver supporting system is used for the generation of a reference clock in a multi-transceiver system and the frequency offset control of each simultaneous working transceiver system; the method comprises the following steps: an adjusting frequency offset is obtained from the obtained initial frequency offset of each transceiver system according to a set mapping relationship; a reference clock which is arranged in the transceiver system and used by each transceiver system is adjusted according to the adjusting frequency offset, when the output frequency of the reference clock is kept unchanged; by taking the output frequency of the reference clock as the standard value, the frequency division parameter within the permission of the phase-locked loop frequency offset of each transceiver system is calculated, the frequency is locked and the frequency offset is controlled according to the frequency division parameter. The invention also discloses a generation device for the reference clock of the multi-transceiver supporting system. The invention reduces the production cost of the multi-transceiver system, can reduce the production size of the multi-transceiver system terminal equipment and improve the system stability of the multi-transceiver system terminal equipment.
Description
technical field [0001] The present invention relates to a communication technology, in particular to a method for generating a reference clock supporting multiple transceiver systems and a device for generating a reference clock supporting multiple transceiver systems Background technique [0002] With the development of terminal technology, the functions of mobile terminals are becoming more and more powerful, and more and more functions require simultaneous communication with mobile phones. Such as mobile phone TV (including China Mobile Multimedia Broadcasting (CMMB for short) or Single Frequency Network Multimedia Broadcast Multicast Service (SFN-MBMS for short)). Mobile TV requires mobile terminals to support mobile TV services without affecting other basic telecommunication services such as normal call services. Therefore, it is required that the mobile phone terminal can support two or even more sets of business sending and receiving systems to perform sending and re...
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IPC IPC(8): H04L27/00
Inventor 张世芳李济水
Owner ST ERICSSON SEMICON BEIJING