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Random access signal processing method, random access method, device and storage medium

A technology of random access signal and processing method, applied in the field of communication, can solve the problem of low random access success rate, etc., and achieve the effects of improving random access efficiency, avoiding conflict problems, and improving random access success rate

Active Publication Date: 2022-05-13
成都爱瑞无线科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Aiming at the above defects of the prior art, the present invention provides a physical random access signal processing method, physical random access method, device and storage medium to solve the problem of multiple user equipments that select the same preamble in the prior art. The problem of low random access success rate of the random access procedure

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  • Random access signal processing method, random access method, device and storage medium
  • Random access signal processing method, random access method, device and storage medium
  • Random access signal processing method, random access method, device and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093]For the 4-step RA process (the first type of random access process based on contention), the BBU / DU can obtain the physical random access signal uploaded by multiple RF signal processing units, and the BBU / DU processes the signals from multiple RF signals. The physical random access signal of multiple channels of the unit is detected to obtain the detection result of the physical random access signal corresponding to the channel of each radio frequency signal processing unit, and the preamble (preamble) sequence and its corresponding label. Based on the above detection, the BBU / DU can know that the preambles of the physical random access signals transmitted by the multiple RF signal processing units are the same. The communication may know that the physical random access signals with the same preamble transmitted on the multiple radio frequency signal processing units are from different UEs.

[0094] In order to enable as many UEs as possible to successfully access, acc...

Embodiment 2

[0105] For the 4-step RA process, the BBU / DU can obtain the PRACH signals on multiple RUs or rHUBs, and the BBU / DU detects the PRACH signals and detects that multiple rHubs or RUs have the same preamble ID. However, the BBU / DU does not know whether the UEs accessed with the same preamble ID on multiple rHubs or RUs are the same UE. In one case, it is possible that all rHubs or RUs serve the same UE, which may be different from each other, and some rHubs or RUs may have the same UEs and some are different. In order to ensure that multiple UEs can access successfully, the BBU / DU can be assumed to be different UEs, and send different Msg2 messages for each UE. The method of sending Msg2 is the same as that in Embodiment 1, and will not be repeated here.

[0106] If all UEs are different from each other, similar to the case of Embodiment 1, the flow chart of random access signal processing is as follows Figure 7 , Figure 8 As shown, the only difference lies in the sending meth...

Embodiment 3

[0109] For the 2-step RA process, the BBU / DU can obtain MsgA signals on multiple rHub / RUs, and the rHub / RU first detects the MsgA-PRACH, and then demodulates the MsgA-PUSCH signal on the corresponding MsgA-PUSCH resource. When the same preamble ID is detected on multiple rHubs / RUs, according to background knowledge, the MsgA-PUSCH time-frequency resources corresponding to the same preamble ID are the same. Assuming that it is known from the deployment location of the rHub / RU or the previous communication that the UEs that use the same preamble ID on different rHubs / RUs to initiate access are different UEs, then the time-frequency resources of MsgA-PUSCH in MsgA sent by multiple different UEs will be different. If a collision occurs, and the MsgA-PUSCH signals sent by each UE are different, the demodulation results will inevitably affect each other.

[0110]There are three possibilities for the demodulation result. The first one is that the MsgA-PUSCH signal is correctly demodu...

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Abstract

The invention discloses a random access signal processing method, a random access method, a device and a storage medium. The method includes: when processing physical random access signals initiated from multiple user equipments, each physical random access signal can be Each incoming signal generates a different response message, so that each user equipment can obtain a different response message. The problem of Msg3 time-frequency resource conflict in the traditional method can be avoided, and thus the problem of Msg3 signal transmission failure corresponding to multiple user equipments can be avoided. In addition, by adopting the random access signal processing method provided by the embodiment of the present invention, the conflict problem of random access of multiple user equipments can be resolved in advance, so that there is no need to wait until the final conflict mechanism resolution step for processing. Not only can the random access success rate of the user equipment be improved, but also the random access efficiency of the user equipment can be improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a random access signal processing method, random access method, device and storage medium. Background technique [0002] For indoor coverage of wireless communications, distributed base stations are currently one of the most important deployment forms. Distributed base stations are low in cost and highly flexible in construction. The core of the original distributed base station structure is to separate the traditional macro base station baseband processing unit (Baseband Unit, BBU) from the radio frequency processing unit (Remote Radio Unit, RU), and the two are connected through optical fibers. In network deployment, the BBU, core network and wireless network indicating equipment are concentrated in the computer room, and then connected to the RU deployed on the planned site through optical fibers to complete network coverage. Thereby reducing construction cost...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W74/00H04W74/08H04W88/06
CPCH04W74/004H04W74/085H04W88/06
Inventor 孟贤琴唐懿夫任广梅罗旬
Owner 成都爱瑞无线科技有限公司
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