WO2017119377A1 - 無線通信装置及び無線通信方法 - Google Patents
無線通信装置及び無線通信方法 Download PDFInfo
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- WO2017119377A1 WO2017119377A1 PCT/JP2016/089016 JP2016089016W WO2017119377A1 WO 2017119377 A1 WO2017119377 A1 WO 2017119377A1 JP 2016089016 W JP2016089016 W JP 2016089016W WO 2017119377 A1 WO2017119377 A1 WO 2017119377A1
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- 238000004891 communication Methods 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000008569 process Effects 0.000 claims abstract description 14
- 230000007704 transition Effects 0.000 claims description 47
- 238000012545 processing Methods 0.000 claims description 42
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- 230000005540 biological transmission Effects 0.000 description 17
- 238000010586 diagram Methods 0.000 description 11
- 230000000717 retained effect Effects 0.000 description 7
- 239000000872 buffer Substances 0.000 description 5
- 238000007562 laser obscuration time method Methods 0.000 description 5
- 230000011664 signaling Effects 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 230000001960 triggered effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 101100533725 Mus musculus Smr3a gene Proteins 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
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- 208000016344 lissencephaly with cerebellar hypoplasia Diseases 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/25—Maintenance of established connections
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/19—Connection re-establishment
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/02—Data link layer protocols
Definitions
- a state mismatch in the layer (generally referred to as an intermediate layer, so-called layer 2) may occur between UE and eNB.
- layer 2 a state mismatch in the layer
- the UE and the eNB may not be able to normally start communication such as data transmission / reception even after returning to RRC-Connected.
- Another aspect of the present invention includes a physical layer, a radio resource control layer, and an intermediate layer positioned between the physical layer and the radio resource control layer, and a connection state in the radio resource control layer, A radio communication method for transitioning between a suspended state in the radio resource control layer, wherein the radio resource control layer transitions from the connected state to the suspended state, and at least part of the states in the intermediate layer
- the present invention includes a step of initializing and a step of returning the radio resource control layer from the suspended state to the connected state based on the initialized state of the intermediate layer.
- the MME 300 transitions to ECM-Suspended by performing S1 UE Ctxt Deactivate in ECM-Connected which is a connection state in the NAS layer. Further, the MME 300 returns to ECM-Connected by performing S1 UE Ctxt Active in ECM-Suspended.
- MME300 transitions to ECM-Idle by performing S1AP UE Ctxt Release in ECM-Connected. Further, the MME 300 transitions to ECM-Idle by performing S1AP UE Ctxt Release in ECM-Suspended.
- the interruption processing unit 130 can hold the header compression context processed in the PDCP layer without initializing it. Specifically, the suspension processing unit 130 initializes the context of Robust Header Compression (see ROHC, RFC3085), which is the header compression protocol used in the PDCP layer even when the UE 100 transitions to RRC-Suspended. Instead, the context at the time of the transition is retained.
- ROHC Robust Header Compression
- the PDCP COUNT value includes the hyperframe number (Hyper frame number) and the PDCP PDU (or PDCP SDU) sequence number (PDCP SN). It is used for transmission of PDCP PDU in, and for security processing in C plane and U plane.
- the UE 100 discards all PDCPPDPDUs received from the eNB 200 or other UEs that are directly performing communication. Similarly, UE 100 discards all PDCP PDUs that are being transmitted or are waiting to be transmitted at the time of transition to RRC-Suspended.
- a running timer may operate until it expires, and an event may be triggered after the expiration.
- the running timer may be temporarily stopped at the value at the time of transition to RRC-Suspended, and restarted with the value as the initial value at the time of returning to RRC-Connected.
- the channel and / or symbol may be a signal.
- the signal may be a message.
- system and “network” may be used interchangeably.
- UE100 is a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal by those skilled in the art , Remote terminal, handset, user agent, mobile client, client, or some other appropriate terminology.
- Another aspect of the present invention includes a physical layer, a radio resource control layer, and an intermediate layer positioned between the physical layer and the radio resource control layer, and a connection state in the radio resource control layer, A radio communication method for transitioning between a suspended state in the radio resource control layer, wherein the radio resource control layer transitions from the connected state to the suspended state, and at least part of the states in the intermediate layer
- the present invention includes a step of initializing and a step of returning the radio resource control layer from the suspended state to the connected state based on the initialized state of the intermediate layer.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
図1は、本実施形態に係る無線通信システム10の全体概略構成図である。無線通信システム10は、Long Term Evolution(LTE)に従った無線通信システムであり、無線アクセスネットワーク20及びユーザ装置100(以下、UE100)を含む。
次に、無線通信システム10の機能ブロック構成について説明する。具体的には、UE100の機能ブロック構成について説明する。図4は、UE100の機能ブロック構成図である。
次に、無線通信システム10の動作について説明する。具体的には、UE100がRRC-ConnectedからRRC-Suspendedに遷移し、RRC-SuspendedからRRC-Connectedに復帰する動作について説明する。なお、eNB200もUE100と概ね同様の動作を実行する。
図5は、UE100がRRC-ConnectedとRRC-Suspendedとの間を遷移する動作フロー(動作例1)を示す。
動作例2では、UE100がRRC-Suspendedに遷移した場合、中間レイヤの全ての状態が初期化される。以下、動作例1との相違点について主に説明する。
図6は、UE100がRRC-ConnectedとRRC-Suspendedとの間を遷移する動作フロー(動作例3)を示す。
上述した実施形態によれば、以下の作用効果が得られる。具体的には、上述した動作例1及び動作例2によれば、状態制御部120は、中断処理部130によって初期化された中間レイヤ(MACレイヤ/RLCレイヤ/PDCPレイヤ)の状態に基づいて、RRCレイヤを中断状態(RRC-Suspended)から接続状態(RRC-Connected)に復帰させる。
以上、実施形態に沿って本発明の内容を説明したが、本発明はこれらの記載に限定されるものではなく、種々の変形及び改良が可能であることは、当業者には自明である。
前記中断処理部は、前記ミディアムアクセス制御レイヤにおいて実行されるランダムアクセス手順を初期化してもよい。
20 無線アクセスネットワーク
100 UE
110 データ送受信部
120 状態制御部
130 中断処理部
200 eNB
300 MME
Claims (7)
- 物理レイヤと、無線リソース制御レイヤと、前記物理レイヤと前記無線リソース制御レイヤとの中間に位置する中間レイヤとを備え、前記無線リソース制御レイヤにおける接続状態と、前記無線リソース制御レイヤにおける中断状態との間を遷移する無線通信装置であって、
前記無線リソース制御レイヤを前記接続状態または前記中断状態に制御する状態制御部と、
前記無線リソース制御レイヤが前記接続状態から前記中断状態に遷移した場合、前記中間レイヤにおける状態の少なくとも一部を初期化する中断処理部と
を備え、
前記状態制御部は、前記中断処理部によって初期化された前記中間レイヤの状態に基づいて、前記無線リソース制御レイヤを前記中断状態から前記接続状態に復帰させる無線通信装置。 - 前記中断処理部は、前記中間レイヤにおけるタイマ値及び変数の値を初期化する請求項1に記載の無線通信装置。
- 前記中間レイヤは、ミディアムアクセス制御レイヤを含み、
前記中断処理部は、前記ミディアムアクセス制御レイヤにおいて実行されるランダムアクセス手順を初期化する請求項1に記載の無線通信装置。 - 前記中間レイヤは、無線リンク制御レイヤを含み、
前記中断処理部は、前記無線リンク制御レイヤにおいて処理されるプロトコル・データ・ユニットの内容を初期化する請求項1に記載の無線通信装置。 - 前記中間レイヤは、パケット・データ・コンバージェンス・プロトコルレイヤを含み、
前記中断処理部は、前記パケット・データ・コンバージェンス・プロトコルレイヤにおいて処理されるプロトコル・データ・ユニットの内容を初期化する請求項1に記載の無線通信装置。 - 前記中間レイヤは、パケット・データ・コンバージェンス・プロトコルレイヤを含み、
前記中断処理部は、前記パケット・データ・コンバージェンス・プロトコルレイヤにおいて処理されるヘッダ圧縮のコンテキストを初期化せずに保持する請求項1に記載の無線通信装置。 - 物理レイヤと、無線リソース制御レイヤと、前記物理レイヤと前記無線リソース制御レイヤとの中間に位置する中間レイヤとを備え、前記無線リソース制御レイヤにおける接続状態と、前記無線リソース制御レイヤにおける中断状態との間を遷移する無線通信方法であって、
前記無線リソース制御レイヤが前記接続状態から前記中断状態に遷移するステップと、
前記中間レイヤにおける状態の少なくとも一部を初期化するステップと、
初期化された前記中間レイヤの状態に基づいて、前記無線リソース制御レイヤを前記中断状態から前記接続状態に復帰するステップと
を含む無線通信方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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US16/068,426 US11064554B2 (en) | 2016-01-08 | 2016-12-28 | Radio communication device and radio communication method |
EP16883876.1A EP3402297A4 (en) | 2016-01-08 | 2016-12-28 | WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD |
JP2017560366A JP7194500B2 (ja) | 2016-01-08 | 2016-12-28 | 無線通信装置及び無線通信方法 |
CN201680076858.3A CN108432335B (zh) | 2016-01-08 | 2016-12-28 | 无线通信装置和无线通信方法 |
BR112018013613A BR112018013613A2 (pt) | 2016-01-08 | 2016-12-28 | dispositivo de comunicação via rádio e método de comunicação via rádio |
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US (1) | US11064554B2 (ja) |
EP (1) | EP3402297A4 (ja) |
JP (1) | JP7194500B2 (ja) |
CN (1) | CN108432335B (ja) |
BR (1) | BR112018013613A2 (ja) |
WO (1) | WO2017119377A1 (ja) |
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US11665766B2 (en) | 2018-10-30 | 2023-05-30 | Samsung Electronics Co., Ltd. | Method and apparatus for reducing overhead of ethernet frame in next generation mobile communication system |
WO2022210914A1 (ja) * | 2021-03-30 | 2022-10-06 | 京セラ株式会社 | 通信制御方法及びユーザ装置 |
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US20190037632A1 (en) | 2019-01-31 |
US11064554B2 (en) | 2021-07-13 |
EP3402297A4 (en) | 2019-10-09 |
JPWO2017119377A1 (ja) | 2018-11-01 |
EP3402297A1 (en) | 2018-11-14 |
JP7194500B2 (ja) | 2022-12-22 |
CN108432335A (zh) | 2018-08-21 |
CN108432335B (zh) | 2022-04-19 |
BR112018013613A2 (pt) | 2019-01-22 |
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