Apparatus for real-time controlling radio frequency chip and terminal containing the same
A radio frequency chip, real-time control technology, applied in the direction of synchronization device, wireless communication, wireless network protocol, etc., to achieve the effect of small storage resources, ultra-high-precision synchronization, and save storage resources
Inactive Publication Date: 2010-10-13
ST ERICSSON SEMICON BEIJING
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[0004] The inventor found in the process of realizing the present invention that at least the following defects exist in the prior art: since the precision of the stored command execution time is the same as the synchronization precision, With the improvement of synchronization accuracy requirements, the resource requirements for storing control commands and corresponding command execution time in the terminal are getting higher and higher. To achieve ultra-high precision synchronization requirements, such as 1 / 16chip, a large amount of storage resources are required to achieve
That is to say, the realization of ultra-high-precision synchronization in the prior art is achieved at the expense of storage resources. For portable terminals such as mobile phones, the storage resources they have are limited and very precious.
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[0044] FIFO (First In First Out) is a common data structure. Its characteristic is that among a set of data / commands that need to be stored in FIFO, the data / commands stored first can only be taken out first. The invention applies the FIFO data structure to the circuits of terminals such as mobile phones to realize the real-time control of the radio frequency chip by the digital baseband chip. The specific method is: design a group of FIFOs in the digital baseband chip, and the processor in the digital baseband chip pushes the control commands of the radio frequency chip and the corresponding execution time into the FIFO group in sequence. When the current time of the reference time counter is consistent with the command execution time at the bottom of the FIFO, the corresponding control command is taken out and executed, thereby controlling the radio frequency chip in real time.
[0045] The following will clearly and completely describe the technical solutions in the embodim...
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The invention discloses a real-time radio frequency chip control device and a terminal containing the device. The device comprises a first-in first-out memory for storing a control command and the corresponding command execution time in a first-in first-out manner, wherein, the bit width of the command execution time is set according to the minimum time interval of the command execution; a time reference counter for cycle count with a frame as a period; a comparator for comparing the high-bit set of the time reference counter with the command execution time at the bottom of the first-in first-out memory, wherein, the bit width of a high-bit set of the time reference counter equals that of the command execution time; a selector which is used for selecting and outputting a control command corresponding to the command execution time at the bottom of the first-in first-out memory when the comparison results from the comparator are the same, and executing the control command to realize thereal-time radio frequency chip control. The technical proposal of the invention can achieve ultrahigh-precision synchronization with very few memory resources.
Description
technical field [0001] The present invention mainly relates to the communication field, in particular to a device for real-time control of a radio frequency chip and a terminal including the device. [0002] Background technique [0003] When the mobile terminal communicates with the network side, it needs to synchronize with the network. In the TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, Time Division Synchronous Code Division Multiple Access) system, the synchronization requirements for the network and the terminal are very strict, and the digital baseband chip must be able to accurately and real-time control the radio frequency chip for receiving, sending, Otherwise, it may cause communication errors between the terminal and the network. [0004] For a mobile phone terminal that conforms to the TD-SCDMA standard, if QPSK (Quadrature Phase Shift Keying, quadrature phase shift keying) or 16QAM (Quadrature Amplitude Modulation, quadrature amplitude mo...
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IPC IPC(8): H04W80/12H04W56/00
Inventor贺超
OwnerST ERICSSON SEMICON BEIJING