Wireless communication method and device
A communication device and wireless communication technology, applied in the field of communication, can solve the problems of prolonged access and high probability of access collision, etc.
Pending Publication Date: 2022-02-18
HUAWEI TECH CO LTD
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[0006] Aiming at the problem that the access resources of the non-terrestrial communication network system cannot meet the requirements of the non-terrestrial communication system, the access collision probability is high, and the access time is prolonged, a method to improve the random access capability of the communication system is proposed to reduce the satellite communication System access collision probability, improve access success probability
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[0140] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.
[0141] figure 1 A schematic diagram showing an architecture of a communication system applicable to the embodiment of the present application. like figure 1 As shown, the communication system may include at least one second communication device, such as figure 1 The network equipment shown; the communication system may also include at least one first communication device, such as figure 1 shows two first communication devices terminal equipment #1 and terminal equipment #2. The second communication device (satellite) can communicate with the first communication device through a wireless link.
[0142] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as long term evolution (long termevolution, LTE) system, LTE frequency division duplex (frequency division...
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The embodiment of the invention provides a wireless communication method and device, and the method comprises the steps that a first communication device determines a first number N, the first number is the total number of leader sequences to be generated, the first number N is one of the total number of at least two leader sequences, N is a positive integer, the first communication device generates N preamble sequences according to the first number N and a first cyclic shift value, and the first communication device performs random access by using one of the N preamble sequences so that the first communication device in different communication systems can determine the total number of the preamble sequences required to be generated in the random access process according to own system characteristics, so that the random access capability of the communication systems can be improved. In the satellite communication system, the random access is initiated according to the determined first number, so that the probability of random access failure can be reduced, and the communication access time delay is reduced.
Description
technical field [0001] The present application relates to the communication field, and more specifically, to a communication method and device for a random access procedure. Background technique [0002] The fifth generation (5th Generation, 5G) system and its future evolution network need to meet different service requirements, and also need to provide a wider service range. Some areas such as oceans and forests that cannot be covered by terrestrial communication networks can introduce non-terrestrial network (non-terrestrial network, NTN) systems to provide communication services, for example, satellite communication systems can be introduced. Compared with terrestrial communication networks, satellite communication has great advantages. Its communication distance is long, the coverage area is large, and the communication frequency bandwidth is wide. It can provide users with communication services at any time and any place. Therefore, satellite communication is an inevit...
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IPC IPC(8): H04W74/08
CPCH04W74/085H04L27/2613H04J13/0062H04J13/14
Inventor 徐晨蕾周建伟罗禾佳蒋镇军乔云飞
Owner HUAWEI TECH CO LTD