TDD (Time Division Duplex) test system and method for automatically adjusting time delay and advance
An automatic adjustment and testing system technology, applied in transmission systems, transmission monitoring, synchronization devices, etc., can solve problems affecting communication system data transmission efficiency, data loss, untimely switching, etc., to achieve the effect of ensuring data transmission efficiency
Pending Publication Date: 2022-07-01
杭州永谐科技有限公司
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Problems solved by technology
[0004] In the actual communication system, the transmission and processing of data in the system will cause delays, and the uplink and downlink switching may not be timely, which will lead to data loss during the transmission process and affect the data transmission efficiency of the communication system.
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[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0027] It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a co-existence of an intervening component. When a component is considered to be "set on" another component, it ...
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The invention provides a TDD test system and method capable of automatically adjusting time delay and advance, and the system comprises a channel simulator which is used for simulating the transmission of communication data in different types of communication channels, and the channel simulator is connected with a base station frequency converter and a terminal frequency converter which are used for carrying out the compensation adjustment of the communication data. The terminal frequency converter is in data intercommunication with a terminal antenna used for acquiring communication data through a cable, the base station frequency converter is in data intercommunication with a base station antenna through a cable, the base station antenna is in data intercommunication with a base station through an air interface, and the base station is used for acquiring and reading bursts in the same time slot of different frequency domains. And meanwhile, a frame starting signal and an uplink and downlink switching signal are given. The time delay generated in the actual transmission process of the communication data can be accurately acquired, and the transmission data is compensated and adjusted according to the time delay, so that the accuracy of TDD uplink and downlink switching is ensured, and the data transmission efficiency of a communication system is improved.
Description
technical field [0001] The present invention relates to the technical field of TDD uplink and downlink handover delay, in particular to a TDD test system and method for automatically adjusting delay and advance. Background technique [0002] With the development of mobile communication technology, people's requirements for communication are getting higher and higher, and the traditional low-frequency band and small bandwidth can no longer meet the requirements of high-speed transmission. 5G NR began, and the mobile communication frequency band was expanded to the millimeter wave frequency band (5G NRFR2 frequency band) for the first time. However, the duplex mode of communication in the millimeter wave frequency band only supports TDD (time division dual communication technology). Therefore, the switching of TDD uplink and downlink is very important to the efficiency of system information transmission. [0003] Frame structure: a TDMA frame length is 10ms, a frame includes ...
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IPC IPC(8): H04W56/00H04W74/08H04B17/00H04B17/382
CPCH04W56/004H04W56/0065H04W74/0816H04B17/0087H04B17/382
Inventor 范绍东刘国赢马长春黄瀛孟欢欢
Owner 杭州永谐科技有限公司