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Random access signal processing method and device, random access method and 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 effect of improving the random access success rate and avoiding the conflict of time-frequency resources

Active Publication Date: 2022-04-01
成都爱瑞无线科技有限公司
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  • Summary
  • 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 random access signal processing method, random access method, device and storage medium to solve the random access initiated by multiple user equipments that select the same preamble in the prior art. The problem of low success rate of random access in the access process

Method used

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

Examples

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Embodiment 1

[0079]In a distributed base station system, UE1 and UE2 select the same preamble ID, and use the same time-frequency resource to send Msg1 to initiate a random access procedure. UE1 is served by RU1, and UE2 is served by RU2. BBU / DU will obtain two Msg1 sent by RU1 and RU2 respectively, and Msg1 contains the same preamble ID. Since the BBU / DU has acquired two Msg1s, it will send two different Msg2s to RU1 and RU2. For Msg2 sent to RU1, the PDCCH (first type channel) carrying DCI1 (first part) is scrambled by the RA-RNTI in step 1, and the DCI1 (first part) contains the indication PDSCH (second type Channel) physical resource information, time-frequency resource position in the response message (Msg2) sent by BBU / DU, MCS required for decoding PDSCH, and RU_ID1; for Msg2 sent to RU2, DCI2 (first part ) PDCCH (first type channel) is scrambled by RA-RNTI in step 1, and the DCI2 (first part) contains physical resource information indicating PDSCH (second type channel), used to in...

Embodiment 2

[0104]In a distributed base station system, the BBU / DU indicates K=3 through RRC signaling, that is, UE1 and UE2 perform Msg2 detection three times at most. UE1 and UE2 select the same preamble ID, and use the same time-frequency resource to send Msg1 to initiate a random access procedure. UE1 is served by RU1 and is located in the center area of ​​RU1, and UE2 is served by RU2 and is located in the edge area of ​​RU2. BBU / DU will obtain two Msg1 sent by RU1 and RU2 respectively, and Msg1 contains the same preamble ID. Since the BBU / DU has acquired two Msg1s, it will send two different Msg2s to RU1 and RU2 respectively. For Msg2 sent to RU1, the PDCCH (first type channel) carrying DCI1 (first part) is scrambled by the RA-RNTI in step 1, and the DCI1 (first part) contains the indication PDSCH (second type Channel) physical resource information, time-frequency resource position in the response message (Msg2) sent by BBU / DU, MCS required for decoding PDSCH, and RU_ID1; for Msg2...

Embodiment 3

[0107] In a distributed base station system, the BBU / DU indicates K=3 through RRC signaling, that is, UE1 and UE2 perform Msg2 detection three times at most. UE1 and UE2 select the same preamble ID, and use the same time-frequency resource to send Msg1 to initiate a random access procedure. UE1 is served by RU1 and is located in the center area of ​​RU1, and UE2 is served by RU2 and is located in the edge area of ​​RU2. BBU / DU will obtain two Msg1 sent by RU1 and RU2 respectively, and Msg1 contains the same preamble ID. Since the BBU / DU has acquired two Msg1s, it will send two different Msg2s to RU1 and RU2. For Msg2 sent to RU1, the PDCCH (first type channel) carrying DCI1 (first part) is scrambled by the RA-RNTI in step 1, and the DCI1 (first part) contains the indication PDSCH (second type Channel) physical resource information, time-frequency resource position in the response message (Msg2) sent by BBU / DU, MCS required for decoding PDSCH, and RU_ID1; for Msg2 sent to RU2...

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PUM

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Abstract

The invention discloses a random access signal processing method, a random access method, a random access device and a storage medium, and the method comprises the steps: when physical random access signals initiated by a plurality of pieces of user equipment are processed, generating different response messages for each physical random access signal, and thus, each user equipment can obtain different response messages. The problem of conflict of time-frequency resources of the random access message 3 in a traditional method and the problem of failure of signal transmission of the random access message 3 corresponding to a plurality of pieces of user equipment caused by the conflict of the time-frequency resources of the random access message 3 can be avoided. Furthermore, by adopting the random access signal processing method provided by the invention, each piece of user equipment can only successfully descramble the random access response data issued by the radio frequency signal processing unit serving the user equipment, so that the conflict problem of time-frequency resources of the random access message 3 can be further avoided, and the user experience is improved. And the random access success rate 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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IPC IPC(8): H04W74/00H04W74/08
Inventor 唐懿夫魏波任广梅韩松阳孟贤琴
Owner 成都爱瑞无线科技有限公司
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