Random access method, terminal device and network device

Abstract

The embodiment of the invention provides a random access method, a terminal device and a network device. The method comprises: a terminal device acquiring a first random access identifier; the terminal device selecting a first random access sequence set corresponding to a first random access identifier from a random access sequence set group, wherein the random access sequence set group comprisesL random access sequence sets, each random access sequence set comprises J random access sequences, L and J are both positive integers, and J is greater than or equal to 2; and the terminal device sending X first random access sequences to a network device, wherein X is a positive integer. According to the random access method, the terminal device and the network device provided by the embodimentof the invention, the probability that a plurality of terminal device simultaneously use the same random access sequence to request to access the cell (i.e., reduce the random access collision probability) can be reduced, and the RACH capacity of the cell is improved.

Description

technical field [0001] The embodiments of the present application relate to communication technologies, and in particular, to a random access method, terminal equipment, and network equipment. Background technique [0002] In order to cope with the explosive growth of mobile data traffic in the future, massive mobile communication device connections, and various new services and application scenarios emerging, the fifth generation (5G) communication system that can support multiple services has emerged as the times require. Compared with the random access scenario under the long term evolution (LTE) communication system, the random access scenario of the 5G communication system requires that the number of users in the serving cell can reach 10-10% of the number of users in the serving cell under the LTE communication system. 100 times, it is required that the random access channel (random access channel, RACH) can support more functions (for example, it can indicate the upli...

AI Technical Summary

Problems solved by technology

Therefore, when a terminal device in a 5G communication system accesses a cell using a competitive random access method, if the method of generating a random access sequence in the LTE communication system is still used, it is easy for multiple terminal devices to use the same random access sequence at the same time. In the case of requesting access to the cell in the sequence (that is, a random access collision occurs), resulting in the failure of the multiple terminal devices to access the cell

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