PRACH resource configuration method and device and PRACH baseband signal generation method and device

Abstract

The embodiment of the present invention provides a PRACH resource configuration method and a PRACH baseband signal generation method and device. The resource configuration method includes the steps: determining the length TSEQ of a random access preamble sequence; determining; determining the number of random access time domains in the uplink time domain of each system radio frame according to thelength TSEQ of the preamble sequence; determining the length Tcp of a CP (cyclic prefix) and the length TGT of a guard interval GT between adjacent system radio frames according to the length of theuplink time domain and the length of the preamble sequence; determining the starting time domain position of the PRACH channel of each random access time domain according to the length of each systemradio frame, the Preamble sequence length TSEQ, the length Tcp of the CP, and the length TGT of the guard interval GT. According to the embodiment of the present invention, the method satisfies the coverage requirement of a broadband communication system and the transmission requirement of the PRACH, and avoids the interference of the uplink PRACH channel to the downlink PBCH by setting the guardinterval.

Description

Technical field [0001] The embodiment of the present invention relates to the field of communication technology, and in particular to a PRACH resource configuration method and device, and a PRACH baseband signal generation method and device. Background technique [0002] With the rapid development of wireless communication services, new services have an increasing demand for broadband transmission. In order to meet actual application requirements, spectrum aggregation technologies have emerged. Spectrum aggregation can aggregate multiple continuous relatively narrow carriers into a wider carrier, and can aggregate discontinuous discrete narrowbands to form a broadband carrier. [0003] The LTE230 wireless broadband communication system based on discrete narrowband aggregation (LTE230 system for short) is a broadband wireless communication system customized and developed by China Putian for the wireless communication needs of Internet of Things applications using TD-LTE advanced wir...

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Problems solved by technology

[0006] Embodiments of the present invention provide a PRACH resource configuration method and device, and a PRACH baseband signal generation method and device, to solve the problem that the PRACH channel design requirements of the existing LTE system are not applicable to the wideband transmission system based on discrete narrowband aggregation, and to meet the requirements of the broadband transmission system based on discrete narrowband aggregation. Random Access Requirements for Broadband Transmission Systems with Discrete Narrowband Aggregation

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