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WO2013039146A1 - Station de base et procédé de contrôle de communication - Google Patents

Station de base et procédé de contrôle de communication Download PDF

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Publication number
WO2013039146A1
WO2013039146A1 PCT/JP2012/073464 JP2012073464W WO2013039146A1 WO 2013039146 A1 WO2013039146 A1 WO 2013039146A1 JP 2012073464 W JP2012073464 W JP 2012073464W WO 2013039146 A1 WO2013039146 A1 WO 2013039146A1
Authority
WO
WIPO (PCT)
Prior art keywords
timer
mobile station
user data
base station
control unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2012/073464
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English (en)
Japanese (ja)
Inventor
徹 内野
アニール ウメシュ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTT Docomo Inc
Original Assignee
NTT Docomo Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTT Docomo Inc filed Critical NTT Docomo Inc
Priority to JP2013533707A priority Critical patent/JP5678194B2/ja
Publication of WO2013039146A1 publication Critical patent/WO2013039146A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H04W52/0235—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal where the received signal is a power saving command
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to a base station and a communication control method for controlling a connection state of a mobile station with a radio access network.
  • the mobile station (UE) In the Long Term Evolution (LTE) standardized in the 3rd Generation Partnership Project (3GPP), the mobile station (UE) is managed in one of two states, specifically, the RRC connected state and the IDLE state. (See, for example, Non-Patent Document 1).
  • LTE Long Term Evolution
  • 3GPP 3rd Generation Partnership Project
  • the RRC connected state is a state in which a connection with a radio access network (base station) is established in the Radio Resource Control (RRC) layer, and user data can be transmitted and received.
  • the IDLE state is a state in which connection is not established in RRC, and in order to transmit and receive user data, it is necessary to establish a connection with the radio access network.
  • the present invention has been made in view of such a situation, and an object thereof is to provide a base station and a communication control method capable of appropriately shifting a mobile station having no user data to be transmitted / received to an IDLE state.
  • a first feature of the present invention is a base station (for example, base station 100A) that controls a connection state of a mobile station (mobile station 200) with a radio access network, and a state of user data transmitted and received by the mobile station
  • a transmission / reception data detection unit (transmission / reception data detection unit 103) that detects the presence of user data in the mobile station when the transmission / reception data detection unit detects that the user data does not exist.
  • the first timer control unit (UE Inactive Timer control unit 107) that starts the timer (UE Inactive Timer 107a) and the measurement time of the first timer started by the first timer control unit has exceeded a first threshold value
  • the mobile station state control unit (mobile station state) causes the mobile station to transition to an IDLE state in which a connection with the radio access network is released and a predetermined channel is intermittently received.
  • a state control unit 105 a state control unit 105).
  • a second feature of the present invention is a communication control method for controlling a connection state of a mobile station with a radio access network, wherein the communication device detects a state of user data transmitted and received by the mobile station, When the communication device detects that the user data does not exist, a step of starting a first timer that measures a time when no user data exists in the mobile station, and a measurement time of the activated first timer When the threshold of 1 is exceeded, the gist of the present invention is to have a step of transitioning the mobile station to an IDLE state in which a connection with the radio access network is released and a predetermined channel is intermittently received.
  • FIG. 1 is an overall schematic configuration diagram of a radio communication system according to an embodiment of the present invention.
  • FIG. 2 is a functional block configuration diagram of the base station 100A according to the embodiment of the present invention.
  • FIG. 3 is a diagram showing a basic operation sequence of state control of the mobile station 200 by the base station 100A according to the embodiment of the present invention.
  • FIG. 4 is a diagram illustrating a communication sequence related to the state control of the mobile station 200 according to the operation example 1.
  • FIG. 5 is a diagram showing a communication sequence related to state control of the mobile station 200 according to the operation example 2.
  • FIG. 6 is a diagram illustrating an operation flow of the base station 100A according to the second operation example.
  • FIG. 1 is an overall schematic configuration diagram of a radio communication system according to the present embodiment.
  • the radio communication system according to the present embodiment employs a Long Term Evolution (LTE) scheme, and includes a core network 50, base stations 100A, 100B (eNB), and a mobile station 200 (UE). Including.
  • LTE Long Term Evolution
  • Base stations 100A and 100B are connected to the core network 50.
  • Base station 100A (100B) forms cell C1 (cell C2) and performs radio communication with mobile station 200 according to the LTE scheme.
  • the base station 100A (or the base station 100B, hereinafter the same) controls the connection state of the mobile station 200 with the radio access network (RAN).
  • RAN radio access network
  • base station 100A controls the state of mobile station 200 using a plurality of timers.
  • FIG. 2 is a functional block configuration diagram of the base station 100A.
  • the base station 100A includes a wireless communication unit 101, a transmission / reception data detection unit 103, a mobile station state control unit 105, a UE Inactive Timer control unit 107, and a UIT Pending Timer control unit 109.
  • the wireless communication unit 101 performs wireless communication with the mobile station 200 according to the LTE method.
  • the transmission / reception data detection unit 103 detects the state of user data transmitted / received by the mobile station 200. Specifically, the transmission / reception data detection unit 103 detects occurrence of user data transmitted / received via the dedicated traffic channel (DTCH) set with the mobile station 200.
  • DTCH dedicated traffic channel
  • the mobile station state control unit 105 controls the state of the mobile station 200. Specifically, the mobile station 200 is controlled to the RRC connected state or the IDLE state.
  • the RRC connected state is a state where a connection with the radio access network (base station 100A) is established in the Radio Resource Control (RRC) layer, and user data can be transmitted and received.
  • the IDLE state is a state in which no connection is established in the RRC, that is, a state in which the connection with the radio access network is released. In order to transmit and receive user data, the connection with the radio access network must be established. Necessary.
  • the mobile station state control unit 105 sets the measurement time of the UE Inactive Timer 107a (first timer) activated by the UE Inactive Timer control unit 107 (first timer control unit) to the first threshold value. If exceeded, the mobile station 200 shifts to an IDLE state in which a predetermined channel is intermittently received.
  • the UE Inactive Timer 107 controls the UE Inactive Timer 107a. Specifically, the UE Inactive Timer control unit 107 activates the UE Inactive Timer 107a that measures the time when the user data does not exist in the mobile station 200 when the transmission / reception data detection unit 103 detects that the user data does not exist. To do. In the present embodiment, the UE Inactive Timer control unit 107 constitutes a first timer control unit.
  • the UE Inactive Timer control unit 107 stops the UE Inactive Timer 107a when user data is generated via the dedicated traffic channel (DTCH) to the mobile station 200.
  • the UE Inactive Timer control unit 107 is configured such that when the measurement time of the UIT Pending Timer 109a (second timer) exceeds the second threshold (or when the UIT Pending Timer 109a is stopped) and the UE Inactive Timer 107a If user data for the mobile station 200 is generated in a state where the measurement time does not exceed the first threshold, the UE Inactive Timer 107a can be reset.
  • the UIT Pending Timer control unit 109 controls the UIT Pending Timer 109a.
  • the UIT Pending Timer control unit 109 is configured to start a handover from a cell to which the mobile station 200 is connected (for example, cell C1) to another cell (cell C2) or when the mobile station 200 is wireless.
  • UIT Pending Timer 109a (second timer) used for determining whether or not to stop measurement by UE Inactive Timer 107a is started.
  • the UIT Pending Timer control unit 109 constitutes a second timer control unit.
  • UIT Pending Timer control unit 109 determines that when UIT ⁇ ⁇ Pending Timer 109a measurement time exceeds the second threshold (or when UIT Pending Timer 109a is stopped), UE (Inactive Timer 107a exceeds the first threshold. It is determined whether or not.
  • the UIT Pending Timer control unit 109 can reset the UE Inactive Timer 107a via the UE Inactive Timer control unit 107 when the measurement time of the UE Inactive Timer 107a exceeds the first threshold.
  • the UIT Pending Timer control unit 109 may stop resetting the UE Inactive Timer107a even if user data for the mobile station 200 is generated. Can do. That is, in this case, the UIT Pending Timer control unit 109 stops resetting the UE Inactive Timer 107a via the UE Inactive Timer control unit 107 and maintains the measurement by the UE Inactive Timer 107a.
  • the wireless communication unit 101, the transmission / reception data detection unit 103, the mobile station state control unit 105, the UE Inactive Timer 107a and the UIT Pending Timer 109a are provided by the function of the platform (PF) of the base station 100A,
  • the UE Inactive Timer control unit 107 and UIT Pending Timer control unit 109 are provided by the function of the application (AP) of the base station 100A, but are not limited to such a configuration.
  • FIG. 3 shows a basic operation sequence of state control of the mobile station 200 by the base station 100A according to the present embodiment.
  • FIG. 4 shows a communication sequence related to state control of the mobile station 200 according to this operation example.
  • the base station 100A activates the UE Inactive Timer 107a at the timing when the Random Access procedure with the mobile station 200 (UE) is completed (S10) (S20).
  • the base station 100A resets and stops the UE Inactive Timer 107a that manages the mobile station 200 (S40). Examples of the state in which user data for the mobile station 200 is generated in DTCH include the following.
  • the base station 100A transmits RRC connection Release to the mobile station 200 at a timing when the UE Inactive Timer 107a exceeds the first threshold (S70), thereby causing the mobile station 200 to transition to the IDLE state ( S80).
  • the platform (PF) of the base station 100A notifies the application (AP) that the UE Inactive Timer 107a has exceeded the first threshold value, and causes the AP to transmit RRC connection Release.
  • the base station 100A cancels the resetting of the UE-Inactive Timer 107a described above.
  • the base station 100A sets the state of UE Inactive Timer 107a between the PF and the AP in the handover RBS-ID setting process (macro) executed in response to the handover of the mobile station 200 ( Specifically, the handover is performed from the handover source cell S-cell (Source cell) in the handover destination cell T-cell (Target cell) or inside the base station 100A (specifically, from S-cell to T-cell). ) Is taken over (S100).
  • the mobile station 200 executes the Random Access procedure with the base station 100A in accordance with the start of handover or reconnection to the radio access network (S110 to S130).
  • the base station 100A activates the UE Inactive Timer 107a (S120).
  • the base station 100A and the mobile station 200 execute connection processing by the RRC layer and the RLC layer, and transmission / reception of a status report in the Packet Data Convergence Protocol (PDCP) layer (S140 to S180).
  • PDCP Packet Data Convergence Protocol
  • the uplink data received by the S-cell is transmitted to the upper layer even if it does not reach the base station 100A in the order of transmission.
  • the mobile station 200 uses the base station 100A for data for which ACK has not been confirmed in the RLC layer even when the base station 100A receives the uplink data in S-cell. Retransmit in T-cell (Target) assuming that it is not received.
  • the mobile station 200 retransmits uplink data that has already been received in the S-cell. Therefore, when the mobile station 200 is handed over or reconnected, the retransmission can be avoided by notifying the mobile station 200 of the uplink data reception status in the base station 100A by the status report of the PDCP layer. Whether or not to transmit the PDCP status report may be specified by the station data for the base station 100A.
  • FIG. 5 shows a communication sequence related to state control of the mobile station 200 according to this operation example.
  • FIG. 6 shows an operation flow of the base station 100A according to this operation example.
  • the value of the UE-Inactive Timer 107a is transferred from the S-cell to the T-cell (S100).
  • the AP macro notifies the T-eNB (for example, the base station 100B).
  • the T-cell sets the inherited UE Inactive Timer 107a as an initial value and starts the UE Inactive Timer 107a.
  • UE Inactive Timer 107a Since PDCP status report in Data Radio Bearer (DRB) is mapped to DTCH, UE Inactive Timer 107a is reset and stopped at this point. For this reason, UE Inactive Timer 107a is reset every time handover or reconnection is made to mobile station 200 for which user data to be transmitted and received does not exist, and mobile station 200 cannot transition to the IDLE state.
  • DRB Data Radio Bearer
  • the resetting of the UE Inactive Timer 107a is restricted under a certain condition by using the UIT Pending Timer 109a.
  • the base station 100A activates the UIT Pending Timer 109a together with the UE Inactive Timer 107a (S120A in FIG. 5 and S330 in FIG. 6).
  • the base station 100A sets the UIT Pending Timer 109a value to the second threshold value.
  • the UIT Pending Timer 109a is stopped at the exceeded timing.
  • the base station 100A stops UIT Pending Timer 109a at the timing when the value of UIT Pending Timer 109a exceeds the second threshold (S190 in FIG. 5).
  • the base station 100A determines which one of the DTCH downlink logical channels (LCH) for the mobile station 200 in a state where the UE Inactive Timer 107a is activated and the UIT Pending Timer 109a is stopped (timed out). If data exists for any one of them, or data exists for any one of the uplink logical channel groups (LCG) including DTCH for the mobile station 200, the UE Inactive Timer 107a is reset and stopped. (S200 to S220 in FIG. 5 and S330 in FIG. 6).
  • LCH downlink logical channels
  • the base station 100A notifies the AP of the event if the value of the UE Timer 107a exceeds the first threshold value while the UIT Pending Timer 109a is stopped. Note that, at the timing when the UIT Pending Timer 109a associated with the mobile station 200 stops, even if the UE Inactive Timer 107a exceeds the first threshold, the reset condition of the UE Inactive Timer 107a is satisfied at that time Does not report to the AP, that is, if UIT Pending Timer 109a is stopped, does UE Inactive Timer 107a exceed the first threshold after determining whether or not UE Inactive Timera107a is reset? Determine whether or not.
  • the UE Inactive Timer 107a that measures the time when the user data does not exist in the mobile station 200 is used, and the measurement time of the UE Inactive Timer 107a exceeds the first threshold value
  • the mobile station 200 is transitioned to the IDLE state. For this reason, the mobile station 200 having no user data to be transmitted / received can be appropriately shifted to the IDLE state, radio resource waste of the base station and power consumption of the mobile station 200 can be reduced, and battery consumption can be suppressed.
  • UE Inactive Timer 107a when the measurement time of UIT Pending Timer 109a exceeds the second threshold and when the measurement time of UE Inactive Timer 107a exceeds the first threshold, UE Inactive Timer 107a is reset. The On the other hand, if the measurement time of UIT Pending Timer 109a does not exceed the second threshold, resetting of UE Inactive Timer 107a is canceled even if user data for mobile station 200 is generated.
  • UIT Pending 109 a is used, but UIT Pending 109 a is not necessarily used.
  • UIT Pending 109 a is not necessarily used.
  • only UE Inactive Timer 107a may be used.
  • the present invention it is possible to provide a base station and a communication control method that can appropriately shift a mobile station having no user data to be transmitted / received to an IDLE state.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention se rapporte à une station de base et à un procédé de contrôle de communication adaptés pour faire passer de façon appropriée une station mobile qui n'a pas de données d'utilisateur à transmettre ou à recevoir, à un état d'attente. La station de base selon l'invention (100A) comprend : un module de détection de données de transmission ou de réception (103), qui détecte l'état de données d'utilisateur qui sont transmises ou reçues par une station mobile (200); un module de contrôle de compteur d'inactivité d'UE (107) qui, dans un cas où le module de détection de données de transmission ou de réception (103) détecte qu'il n'y a pas de données d'utilisateur, active un compteur d'inactivité d'UE (107a) qui mesure le temps durant lequel il n'y a pas de données d'utilisateur dans la station mobile (200); et un module de contrôle d'état de station mobile (105), qui fait passer la station mobile (200) à un état d'attente dans un cas où le temps mesuré par le compteur d'inactivité d'UE (107a), qui a été activé par le module de contrôle de compteur d'inactivité d'UE (107), a dépassé un premier seuil.
PCT/JP2012/073464 2011-09-16 2012-09-13 Station de base et procédé de contrôle de communication Ceased WO2013039146A1 (fr)

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JP2013533707A JP5678194B2 (ja) 2011-09-16 2012-09-13 基地局及び通信制御方法

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JP2011-203408 2011-09-16
JP2011203408 2011-09-16

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017523626A (ja) * 2014-06-24 2017-08-17 インテル・コーポレーション 統合無線ローカルエリアネットワーク及びセルラネットワークにおけるハンドオーバレイテンシを低減する装置、方法、及びシステム
US9820227B2 (en) 2013-08-30 2017-11-14 Sharp Kabushiki Kaisha Program and base station apparatus
CN108924853A (zh) * 2017-03-23 2018-11-30 中兴通讯股份有限公司 无线链路监测方法和用户设备
CN110012520A (zh) * 2018-01-05 2019-07-12 中国移动通信有限公司研究院 一种寻呼方法、设备及计算机可读存储介质

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11313370A (ja) * 1998-04-28 1999-11-09 Toshiba Corp 移動パケット通信システムとそのデータ通信装置、基地局装置及び移動端末装置
JP2007166627A (ja) * 2005-12-14 2007-06-28 Research In Motion Ltd Ｕｍｔｓネットワークにおける無線リソース制御に関するユーザ装備の方法および装置
WO2008096685A1 (fr) * 2007-02-05 2008-08-14 Nec Corporation Procédé de transfert intercellulaire de station de base à station de base, système de communication sans fil, procédé de commande drx, station de base et terminal de communication
WO2012093434A1 (fr) * 2011-01-06 2012-07-12 日本電気株式会社 Système de communication mobile, dispositif de commande, système de fourniture de règles, procédé de commande de transition d'état et procédé de fourniture de règles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11313370A (ja) * 1998-04-28 1999-11-09 Toshiba Corp 移動パケット通信システムとそのデータ通信装置、基地局装置及び移動端末装置
JP2007166627A (ja) * 2005-12-14 2007-06-28 Research In Motion Ltd Ｕｍｔｓネットワークにおける無線リソース制御に関するユーザ装備の方法および装置
WO2008096685A1 (fr) * 2007-02-05 2008-08-14 Nec Corporation Procédé de transfert intercellulaire de station de base à station de base, système de communication sans fil, procédé de commande drx, station de base et terminal de communication
WO2012093434A1 (fr) * 2011-01-06 2012-07-12 日本電気株式会社 Système de communication mobile, dispositif de commande, système de fourniture de règles, procédé de commande de transition d'état et procédé de fourniture de règles

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9820227B2 (en) 2013-08-30 2017-11-14 Sharp Kabushiki Kaisha Program and base station apparatus
JP2017523626A (ja) * 2014-06-24 2017-08-17 インテル・コーポレーション 統合無線ローカルエリアネットワーク及びセルラネットワークにおけるハンドオーバレイテンシを低減する装置、方法、及びシステム
CN108924853A (zh) * 2017-03-23 2018-11-30 中兴通讯股份有限公司 无线链路监测方法和用户设备
CN108924853B (zh) * 2017-03-23 2024-04-26 中兴通讯股份有限公司 无线链路监测方法和用户设备
CN110012520A (zh) * 2018-01-05 2019-07-12 中国移动通信有限公司研究院 一种寻呼方法、设备及计算机可读存储介质

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JPWO2013039146A1 (ja) 2015-03-26

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