Uplink synchronization method when the rrc state of ue in wcdma direction finding system is pch state

A direction finding system, state technology, applied in the direction of synchronization devices, wireless communication, electrical components, etc.

Active Publication Date: 2019-07-09
GUANGZHOU HUIRUI SITONG INFORMATION SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the uplink measurement problem in the prior art when the RRC state of the UE is PCH, and to provide an RRC (Radio Resource Control) of the UE in a WCDMA (Wideband Code Division Multiple Access) direction finding system. ) Uplink synchronization method when the status is PCH (Paging Channel)

Method used

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  • Uplink synchronization method when the rrc state of ue in wcdma direction finding system is pch state
  • Uplink synchronization method when the rrc state of ue in wcdma direction finding system is pch state
  • Uplink synchronization method when the rrc state of ue in wcdma direction finding system is pch state

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Embodiment

[0034] This embodiment provides a method for uplink synchronization when the RRC state of the UE is PCH in a third-party WCDMA direction finding system.

[0035] The process includes: 1. Unpaging channel to identify the target's S-RNTI; 2. Uplink unpack Cell Update signaling to confirm and measure the target.

[0036] When de-paging the channel, since the logical channel uses the PCCH (Paging Control Channel) channel, the UE in the state of CELL-PCH and URA_PCH does not encrypt it, so the identity of the target can be identified in the paging channel; in the uplink During the synchronization process, since the timing of the UE's uplink transmission is uncertain, it is necessary to continuously decode the PRACH (Physical Random Access Channel) message, then decode the MAC and RLC, decode the ASN.1, and finally obtain the Cell Update signaling. Since the logical channel of the CellUpdate signaling is the CCCH, which is not encrypted, the S-RNTI can be matched in this signaling t...

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Abstract

The present invention discloses an uplink synchronization method for a WCDMA direction-finding system with an RRC state of UE being a PCH state. During analysis of a paging channel, a logical channel is a PCCH channel, UE in a CELL-PCH state and in a URA_PCH state does not encrypt the channel, so that an identifier of a target can be identified in the paging channel. During uplink synchronization, an uplink transmission time of the UE is not determined, so that a PRACH message needs to be constantly analyzed, and then MAC and RLC are analyzed, ASN.1 is analyzed, and finally Cell Update signaling is obtained. A logical channel of the Cell Update signaling is a CCCH, and the CCCH is not encrypted, so that an S-RNTI can be matched in the signaling, so as to perform direction finding. The method disclosed by the present invention solves the problem of uplink target identification and measurement when the RRC state of the UE is PCH, and a target identification probability is improved by detecting the target at during paging.

Description

technical field [0001] The invention relates to the technical field of wireless mobile communication, in particular to an uplink synchronization method when the RRC state of the UE is the PCH state in a WCDMA direction finding system. Background technique [0002] In a wireless communication system, a terminal device and a base station device communicate using wireless signals according to an agreed protocol. The third-party direction finding system is different from terminal equipment and base station equipment. It is a mobile device that can receive uplink signals (signals sent by the terminal to the base station) and downlink signals (signals sent by the base station to the terminal) at the same time. Its role It is to capture the uplink wireless signal of a specific terminal in the air interface, so as to estimate its transmit power. [0003] In the third-party direction finding system, firstly, the UE signal must be identified in the downlink wireless signal, and then ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00
CPCH04W56/0005H04W56/0035
Inventor 付磊
Owner GUANGZHOU HUIRUI SITONG INFORMATION SCI & TECH CO LTD
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