Dual mode subscriber unit for short range, high rate and long range, lower rate data communications
Abstract
This record has no abstract on file.
Term
Term ended
Expired 28 August 2020, 6.1 years ago.
- Priority
- Filed
- Granted
- Expired
- Today
84 claims: 55 independent, 29 dependent
- 1ワイヤレスデータ通信インタフェースを含む装置であって、 a)第1のワイヤレスデータ通信経路を経由してデータを通信するための第1の電子回路と、 b)第1のワイヤレスデータ通信経路よりも広いカバレッジおよび低い通信レートを提供する第2のワイヤレスデータ通信経路を経由してデータを通信するための第2の電子回路と、 c)前記第1のワイヤレスデータ通信経路または前記第2のワイヤレスデータ通信経路の選択された一方が利用可能なワイヤレスデータ通信経路ではないかどうかを判定し、前記第1のワイヤレスデータ通信経路または前記第2のワイヤレスデータ通信経路の他方が利用可能なワイヤレスデータ通信経路であることを判定するための検出器と、 d)前記利用可能なワイヤレスデータ通信経路を前記データ通信インタフェースに接続するためのスイッチと、 e)データをトランスポートする必要性の有無に関係なく、帯域幅がデータ通信セッションにおいて継続的に利用可能であり、そして、データをトランスポートする必要性がない場合に、前記帯域幅が他の装置によるワイヤレスデータ通信のために利用可能になるように、前記利用可能なワイヤレスデータ通信経路を制御するためのコントローラと を備えたことを特徴とする装置。
- 2前記検出器は、該装置が圏外にいるかどうかを判定することによって、ワイヤレスデータ通信経路が利用可能ではないかどうかを判定することを特徴とする請求項1に記載の装置。
- 3前記検出器は、前記ワイヤレスデータ通信経路が輻輳しているかどうかを判定することによってワイヤレスデータ通信経路が利用可能ではないかどうかを判定することを特徴とする請求項1に記載の装置。
- 4前記検出器は、ビットエラーレートが許容できないかどうかを判定することによってワイヤレスデータ通信経路が利用可能ではないかどうかを判定することを特徴とする請求項1に記載の装置。
- 5前記検出器は、フレームエラーレートが許容できないかどうかを判定することによってワイヤレスデータ通信経路が利用可能ではないかどうかを判定することを特徴とする請求項1に記載の装置。
- 6前記検出器は、ワイヤレスデータ通信経路を使用するコストが越えるかどうかを判定することによってワイヤレスデータ通信経路が利用可能ではないかどうかを判定することを特徴とする請求項1に記載の装置。
- 7前記検出器は、ビーコンが検出されないかどうかを判定することによってワイヤレスデータ通信経路が利用可能ではないかどうかを判定することを特徴とする請求項1に記載の装置。
- 8前記検出器は、プローブ応答フレームが受信されないかどうかを判定することによってワイヤレスデータ通信経路が利用可能ではないかどうかを判定することを特徴とする請求項1に記載の装置。
- 9前記検出器は、アクティビティが検出されないかどうかを判定することによってワイヤレスデータ通信経路が利用可能ではないかどうかを判定することを特徴とする請求項1に記載の装置。
- 10前記第1のワイヤレスデータ通信経路または前記第2のワイヤレスデータ通信経路の少なくとも一方がワイヤレスLAN接続であることを特徴とする請求項1に記載の装置。
- 11前記ワイヤレスLAN接続は、少なくとも一つのIEEE802.11標準規格にしたがって実施されることを特徴とする請求項10に記載の装置。
- 12前記第1のワイヤレスデータ通信経路がワイヤレスLAN接続であることを特徴とする請求項1に記載の装置。
- 13前記第2のワイヤレスデータ通信経路がワイヤレスLAN接続であることを特徴とする請求項12に記載の装置。
- 14前記第2のワイヤレスデータ通信経路がワイヤレスLAN接続であることを特徴とする請求項1に記載の装置。
- 15前記第1のワイヤレスデータ通信経路がセルラー接続であることを特徴とする請求項1に記載の装置。
- 16前記第2のワイヤレスデータ通信経路がセルラー接続であることを特徴とする請求項1に記載の装置。
- 17前記第1のワイヤレスデータ通信経路に関連するアクセスコストが、前記第2のワイヤレスデータ通信経路に関連するアクセスコストよりも小さいことを特徴とする請求項1に記載の装置。
- 18前記第2のワイヤレスデータ通信経路へのアクセスが加入ベースであることを特徴とする請求項1に記載の装置。
- 19前記第1のワイヤレスデータ通信経路がプライベート・ネットワークであることを特徴とする請求項1に記載の装置。
- 20前記第2のワイヤレスデータ通信経路がパブリック・ネットワークであることを特徴とする請求項1に記載の装置。
- 21前記第1のワイヤレスデータ通信経路または前記第2のワイヤレスデータ通信経路の少なくとも一方が搬送波感知多重アクセス/衝突回避方式(CSMA/CA)を使用することを特徴とする請求項1に記載の装置。
- 22単一のトランシーバが前記第1のワイヤレスデータ通信経路および前記第2のワイヤレスデータ通信経路の両方を介して通信することを特徴とする請求項1に記載の装置。
- 23別のトランシーバが前記第1のワイヤレスデータ通信経路および前記第2のワイヤレスデータ通信経路のそれぞれを介して通信するために使用されることを特徴とする請求項1に記載の装置。
- 241より多いワイヤレスデータ通信経路が利用可能であるとき、前記スイッチは、最も高い通信レートを有する利用可能なワイヤレスデータ通信経路を選択するように動作することを特徴とする請求項1に記載の装置。
- 251より多いワイヤレスデータ通信経路が利用可能であるとき、前記スイッチは、ビットエラーレートを考慮して最も高い通信スループットを有する利用可能なワイヤレスデータ通信経路を選択するように動作することを特徴とする請求項1に記載の装置。
- 261より多いワイヤレスデータ通信経路が利用可能であるとき、前記スイッチは、最も低いアクセスコストを有する利用可能なワイヤレスデータ通信経路を選択するように動作することを特徴とする請求項1に記載の装置。
- 27前記第1の電子回路は、前記第2の電子回路とともに共通デバイスハウジング内に位置付けられることを特徴とする請求項1に記載の装置。
- 28前記第1の電子回路および前記第2の電子回路は、第1および第2のワイヤレスデータ通信トランシーバのそれぞれの部分であることを特徴とする請求項1に記載の装置。
- 29前記ワイヤレスデータ通信インタフェースは、ワイヤレスLANアクセスポイントにおいて提供されることを特徴とする請求項1に記載の装置。
- 30前記スイッチは、前記第1のワイヤレスデータ通信経路が再び利用可能になったことを前記検出器が判定する場合に、より高速でより小さい範囲の第1のワイヤレスデータ通信経路に自動的に接続し直すことを特徴とする請求項1に記載の装置。
- 31少なくとも第1のワイヤレスデータ通信経路および第2のワイヤレスデータ通信経路からワイヤレスデータ通信経路を選択する方法であって、該第2のワイヤレスデータ通信経路は、該第1のワイヤレスデータ通信経路よりも広いカバレッジおよび低い通信レートを提供し、 前記方法は、 a)データ通信セッションを確立する要求に応答して、前記第1のワイヤレスデータ通信経路が利用可能であるかどうかを判定するステップと、 b)前記第1のワイヤレスデータ通信経路が利用可能である場合に、前記第1のワイヤレスデータ通信経路を使用してデータ通信セッションを確立するステップと、 c)前記第1のワイヤレスデータ通信経路が利用可能でない場合に、前記第2のワイヤレスデータ通信経路を使用してデータ通信セッションを確立するステップと、 d)データ通信セッションが利用可能なワイヤレスデータ通信経路を介して確立されたとき、データ通信信号をトランスポートする必要性の有無に関係なく、ワイヤレス通信のための前記通信セッション中に帯域幅が継続的に利用可能であるように、前記利用可能なワイヤレスデータ通信経路に対してワイヤレストランシーバを制御するステップと、 e)データ通信セッションが利用可能なワイヤレスデータ通信経路を介して確立されたとき、データ通信信号をトランスポートする必要性のない場合に、前記帯域幅を通信ネットワークの他のワイヤレストランシーバによるワイヤレスデータ通信のために利用可能にするステップと を備えることを特徴とする方法。
- 32前記第1のワイヤレスデータ通信経路または前記第2のワイヤレスデータ通信経路の少なくとも一方がワイヤレスLAN接続であることを特徴とする請求項 31 に記載の方法。
- 33前記ワイヤレスLAN接続は、少なくとも一つのIEEE802.11標準規格にしたがって動作することを特徴とする請求項 32 に記載の方法。
- 34前記第1のワイヤレスデータ通信経路がワイヤレスLAN接続であることを特徴とする請求項 31 に記載の方法。
- 35前記第2のワイヤレスデータ通信経路がワイヤレスLAN接続であることを特徴とする請求項 34 に記載の方法。
- 36前記第2のワイヤレスデータ通信経路がワイヤレスLAN接続であることを特徴とする請求項 31 に記載の方法。
- 37前記第1のワイヤレスデータ通信経路がセルラー接続であることを特徴とする請求項 31 に記載の方法。
- 38前記第2のワイヤレスデータ通信経路がセルラー接続であることを特徴とする請求項 31 に記載の方法。
- 39前記第1のワイヤレスデータ通信経路に関連するアクセスコストが、前記第2のワイヤレスデータ通信経路に関連するアクセスコストよりも小さいことを特徴とする請求項 31 に記載の方法。
- 40前記第2のワイヤレスデータ通信経路へのアクセスが加入ベースであることを特徴とする請求項 31 に記載の方法。
- 41前記第1のワイヤレスデータ通信経路がプライベート・ネットワークであることを特徴とする請求項 31 に記載の方法。
- 42前記第2のワイヤレスデータ通信経路がパブリック・ネットワークであることを特徴とする請求項 31 に記載の方法。
- 43前記ワイヤレスデータ通信経路の少なくとも一方が搬送波感知多重アクセス/衝突回避方式(CSMA/CA)を使用することを特徴とする請求項 31 に記載の方法。
- 441より多いワイヤレスデータ通信経路が利用可能であるとき、どのワイヤレスデータ通信経路を使用するかを選択する方法は、最も高い通信レートを有する利用可能なワイヤレスデータ通信経路を選択することであることを特徴とする請求項 31 に記載の方法。
- 451より多いワイヤレスデータ通信経路が利用可能であるとき、どのワイヤレスデータ通信経路を使用するかを選択する方法は、ビットエラーレートを考慮して最も高い通信スループットを有する利用可能なワイヤレスデータ通信経路を選択することであることを特徴とする請求項 31 に記載の方法。
- 461より多いワイヤレスデータ通信経路が利用可能であるとき、どのワイヤレスデータ通信経路を使用するかを選択する方法は、最も低いアクセスコストを有する利用可能なワイヤレスデータ通信経路を選択することであることを特徴とする請求項 31 に記載の方法。
- 47ワイヤレスデータ通信経路が利用可能であるかどうかを判定することは、該ワイヤレスデータ通信経路が範囲内にあるかどうかを判定することを含むことを特徴とする請求項 31 に記載の方法。
- 48ワイヤレスデータ通信経路が利用可能であるかどうかを判定することは、該ワイヤレスデータ通信経路が輻輳していないかどうかを判定することを含むことを特徴とする請求項 31 に記載の方法。
- 49ワイヤレスデータ通信経路が利用可能であるかどうかを判定することは、ビットエラーレートが許容できるかどうかを判定することを含むことを特徴とする請求項 31 に記載の方法。
- 50ワイヤレスデータ通信経路が利用可能であるかどうかを判定することは、フレームエラーレートが許容できるかどうかを判定することを含むことを特徴とする請求項 31 に記載の方法。
- 51ワイヤレスデータ通信経路が利用可能であるかどうかを判定することは、ワイヤレスデータ通信経路を使用するコストが許容できるかどうかを判定することを含むことを特徴とする請求項 31 に記載の方法。
- 52ワイヤレスデータ通信経路が利用可能であるかどうかを判定することは、ビーコン信号を検出することを含むことを特徴とする請求項 31 に記載の方法。
- 53ワイヤレスデータ通信経路が利用可能であるかどうかを判定することは、 プローブ要求メッセージを送信することと、 該プローブ要求に応答してプローブ応答メッセージを検出することと を含むことを特徴とする請求項 31 に記載の方法。
- 54ワイヤレスデータ通信経路が利用可能であるかどうかを判定することは、該ワイヤレスデータ通信経路におけるアクティビティを検出することを含むことを特徴とする請求項 31 に記載の方法。
- 55第1のワイヤレスデータ通信経路が再び利用可能になったことを検出器が判定する場合に、より高速でより小さい範囲の第1のワイヤレスデータ通信経路を再選択するステップをさらに含むことを特徴とする請求項 31 に記載の方法。
- 56第1のワイヤレスデータ通信経路および第2のワイヤレスデータ通信経路が単一のワイヤレスデータ通信トランシーバによって提供されることを特徴とする請求項 31 に記載の方法。
- 57第1のワイヤレスデータ通信経路および第2のワイヤレスデータ通信経路が2つの別個のワイヤレスデータ通信トランシーバによって提供されることを特徴とする請求項 31 に記載の方法。
- 58第1のワイヤレスデータ通信経路トランシーバおよび第2のワイヤレスデータ通信経路トランシーバがワイヤレスLANアクセスポイントトランシーバによって提供されることを特徴とする請求項 31 に記載の方法。
- 59少なくとも第1のワイヤレスデータ通信経路および第2のワイヤレスデータ通信経路からワイヤレスデータ通信経路を選択する方法であって、該第2のワイヤレスデータ通信経路は、該第1のワイヤレスデータ通信経路よりも広いカバレッジおよび低い通信レートを提供し、 前記方法は、 a)データ通信セッションを確立する要求に応答して、一つまたは複数のワイヤレスデータ通信経路が利用可能であるかどうかを判定するステップと、 b)前記利用可能なワイヤレスデータ通信経路の選択された一つを使用してデータ通信セッションを確立するステップと、 c)データ通信セッションが前記選択されたワイヤレスデータ通信経路を介して確立されたとき、データ通信信号をトランスポートする必要性の有無に関係なく、ワイヤレス通信のための前記通信セッション中に帯域幅が継続的に利用可能であるように、前記選択されたワイヤレスデータ通信経路に対してローカルワイヤレストランシーバを制御するステップと、 d)データ通信セッションが前記選択されたワイヤレスデータ通信経路を介して確立されたとき、データ通信信号をトランスポートする必要性のない場合に、前記帯域幅を通信ネットワークの他の利用可能なワイヤレストランシーバによるワイヤレスデータ通信のために利用可能にするステップと を備えることを特徴とする方法。
- 60前記利用可能なワイヤレスデータ通信経路の少なくとも一方がワイヤレスLAN接続であることを特徴とする請求項 59 に記載の方法。
- 61前記選択されたワイヤレスデータ通信経路がワイヤレスLAN接続であることを特徴とする請求項 59 に記載の方法。
- 62少なくとも一つの利用可能なワイヤレスLAN接続が少なくとも一つのIEEE802.11標準規格にしたがって動作することを特徴とする請求項 59 に記載の方法。
- 63少なくとも一つの利用可能なワイヤレスデータ通信経路がセルラー接続であることを特徴とする請求項 59 に記載の方法。
- 64前記選択されたワイヤレスデータ通信経路がセルラー接続であることを特徴とする請求項 59 に記載の方法。
- 65前記選択されたワイヤレスデータ通信経路に関連するアクセスコストが、他の利用可能なワイヤレスデータ通信経路に関連するアクセスコストよりも小さいことを特徴とする請求項 59 に記載の方法。
- 66少なくとも一つの利用可能なワイヤレスデータ通信経路へのアクセスが加入ベースであることを特徴とする請求項 59 に記載の方法。
- 67少なくとも一つの利用可能なワイヤレスデータ通信経路がプライベート・ネットワークであることを特徴とする請求項 59 に記載の方法。
- 68少なくとも一つの利用可能なワイヤレスデータ通信経路がパブリック・ネットワークであることを特徴とする請求項 59 に記載の方法。
- 69少なくとも一つの利用可能なワイヤレスデータ通信経路が搬送波感知多重アクセス/衝突回避方式(CSMA/CA)を使用することを特徴とする請求項 59 に記載の方法。
- 701より多いワイヤレスデータ通信経路が利用可能であるとき、最も高い通信レートを有する利用可能なワイヤレスデータ通信経路を選択することによって選択されたワイヤレスデータ通信経路を判定するステップをさらに含むことを特徴とする請求項 59 に記載の方法。
- 711より多いワイヤレスデータ通信経路が利用可能であるとき、ビットエラーレートを考慮して最も高い通信スループットを有する利用可能なワイヤレスデータ通信経路を選択することによって選択されたワイヤレスデータ通信経路を判定するステップをさらに含むことを特徴とする請求項 59 に記載の方法。
- 721より多いワイヤレスデータ通信経路が利用可能であるとき、最も低いアクセスコストを有する利用可能なワイヤレスデータ通信経路を選択することによって選択されたワイヤレスデータ通信経路を判定するステップをさらに含むことを特徴とする請求項 59 に記載の方法。
- 73ワイヤレスデータ通信経路が範囲内にあるかどうかを判定することによって該ワイヤレスデータ通信経路が利用可能であるかどうかを判定するステップをさらに含むことを特徴とする請求項 59 に記載の方法。
- 74ワイヤレスデータ通信経路が輻輳していないかどうかを判定することによって該ワイヤレスデータ通信経路が利用可能であるかどうかを判定するステップをさらに含むことを特徴とする請求項 59 に記載の方法。
- 75ビットエラーレートが許容できるかどうかを判定することによって該ワイヤレスデータ通信経路が利用可能であるかどうかを判定するステップをさらに含むことを特徴とする請求項 59 に記載の方法。
- 76フレームエラーレートが許容できるかどうかを判定することによって該ワイヤレスデータ通信経路が利用可能であるかどうかを判定するステップをさらに含むことを特徴とする請求項 59 に記載の方法。
- 77ワイヤレスデータ通信経路を使用するコストが許容できるかどうかを判定することによって該ワイヤレスデータ通信経路が利用可能であるかどうかを判定するステップをさらに含むことを特徴とする請求項 59 に記載の方法。
- 78ビーコン信号を検出することによってワイヤレスデータ通信経路が利用可能であるかどうかを判定するステップをさらに含むことを特徴とする請求項 59 に記載の方法。
- 79プローブ要求メッセージを送信すること、および該プローブ要求に応答してプローブ応答メッセージを検出することによってワイヤレスデータ通信経路が利用可能であるかどうかを判定するステップをさらに含むことを特徴とする請求項 59 に記載の方法。
- 80アクティビティを検出することによってワイヤレスデータ通信経路が利用可能であるかどうかを判定するステップをさらに含むことを特徴とする請求項 59 に記載の方法。
- 81単一のトランシーバが全ての利用可能なワイヤレスデータ通信経路を介して通信することを特徴とする請求項 59 に記載の方法。
- 821より多い別のトランシーバが利用可能なワイヤレスデータ通信経路を介して通信するために使用されることを特徴とする請求項 59 に記載の方法。
- 83少なくとも一つの利用可能なワイヤレスデータ通信経路がワイヤレスLANアクセスポイントトランシーバによって提供されることを特徴とする請求項 59 に記載の方法。
- 84以前に利用可能でなかったワイヤレスデータ通信経路が利用可能になった場合に、利用可能なワイヤレスデータ通信経路から再選択するステップをさらに含むことを特徴とする請求項 59 に記載の方法。
Independent claims84
1 paragraph, as filed
[0001] Background of the Invention The widespread use of low-cost personal computers has significantly increased the demand for access to the Internet and other computer networks by the general public. Similar demands exist for wireless communications, where the general public demands that cellular phones be available at low prices over a wide coverage area. [0002] As a result of familiarity with both of these technologies, many of today's general public have come to want to access not only computer networks, but also such wireless networks as well. There is. This is of particular concern to users of portable computers, laptop computers, PDAs (Personal Digital Assistants), etc., similar to those users who have become accustomed to using cellular phones. We hope and expect to access such networks with ease. [0003] The disadvantage is the low cost, wide geographic range and high speed for the Internet and other networks utilizing the existing wireless infrastructure built at a considerable cost to support the cellular telephone system. There is not yet a widely available and satisfactory solution that can provide access to. In fact, many users of wireless modems now operating on existing cellular telephone networks find it difficult to access the Internet and browse web pages, for example. I'm experiencing it. Similar frustration is experienced in all situations where you perform other tasks that require the transfer of relatively large amounts of data between computers. [0004] This is at least partly due to the architecture of cellular telephone networks originally designed to support voice communications. On the other hand, the communication protocol used for the Internet is originally optimized for wireless communication. In particular, the protocols used to connect computers over wireless networks are also suitable for efficient transmission over standard wireless connections. [0005] For example, cellular networks were originally designed to deliver voice-grade services with information in the approximately 3KHz band. Whereas technology exists to communicate data over wireless channels at speeds of 9600 Kbits per second (9600 kbps), these slow frequency channels are available at 28.8 kbps, or even with today's cheap wireless modems. It is also not compatible with the popular direct transmission of data at a speed of 56.6 kbps. These speeds are now considered to be the minimum acceptable data transfer rates for Internet access. [0006] This situation is true for modern digital wireless communication protocols, such as code division multiple access (CDMA). Such systems convert input voice information into digital signals, which are also designed for applications that provide voice grade bandwidth communication channels. As a result, they use communication channels that can achieve a bit error rate (BER) of 1 in 1000 bits in a multipath fading environment. While such bit errors are acceptable for transmitting audio signals, they are awkward in most data transmission environments. [0007] The disadvantage is that in a wireless environment, access to a channel by multiple subscribers is costly and competitive. Traditional frequency division where multiple access uses analog modulation of a group of radio carriers<u style="single">Multiple</u>Characteristics of cellular radio frequency spectra, whether provided by access (FDMA) or modulated by new digital modulation methods that use time division multiple access (TDMA) or code division multiple access (CDMA). Is the medium in which it is expected to be shared. This is quite different from the traditional environment of data transmission, where traditionally wired media is available at a relatively low cost and is therefore generally not intended for sharing. [0008] Wireless LANs (W-LANs), on the other hand, allow communication between a relatively narrow range of users without the need for physical connections, or separately between wired LANs and wireless users. Enables communication. W-LANs generally have a fairly narrow range and high data transfer rates. [0009] The newly approved standard, IEEE 802.11, defines the media access control (MAC) and physical (PHY) layers of wireless LANs. Similar to cellular systems, W-LAN connections can be received in one receivable area (IEEE) You can move from the "basic service set") in 802.11 terms to the next area. A good description of wireless LANs and especially the IEEE 802.11 standard can be found in Geire, J.,<u style="single">Wireless</u><u style="single"></u><u style="single">LANs</u>It can be found in (Macmillan Technical Publishing, 1999). [0010] [Summary of Invention] Wireless LANs are generally dedicated networks that are installed, owned, and maintained by businesses, educational institutions, or private organizations such as homeowners. Therefore, such networks use shared public access frequencies licensed by the government to establish connections and are generally cheaper to access than wide area networks that require a subscriber fee. [0011] In addition, W-LANs generally operate at significantly higher data transfer rates than wide area networks. However, as the LAN term "local" means, the scope of a W-LAN is generally limited to tens or hundreds of feet compared to the miles of a wide area cellular telephone network. [0012] Therefore, if possible, for example within the range of W-LAN, it is desirable to have a device that can automatically select cheaper and faster W-LAN, and access to W-LAN is impossible or practical. If not, it is desirable to use a wide area cellular network. Traditionally, it required two devices, one used to access the W-LAN and one used to access the wide area network. At best, these two devices need to be embedded, for example, in two slots on a laptop computer, allowing the user to choose which device, and therefore which network, to access, either through software or hardware. There is. The user then generally needs to disconnect one of the devices, install the other, and manually reconfigure the computer. [0013] On the contrary, the present invention includes a single device, which is IEEE when a connection to W-LAN is possible. It connects directly to the W-LAN using a protocol such as 802.11 and automatically reverts to a wide area network connection only when it is out of range of the W-LAN base station. [0014] In this way, the same device can be used without the need for reconfiguration or user knowledge. For example, when the user is in the office and within the range of low-cost, high-speed W-LAN, the user's laptop or PDA automatically communicates using the W-LAN. If the user goes out of the office, for example, heading home after lunch or work, the same laptop or PDA outside the scope of the W-LAN will instead take advantage of the extensive, high-cost cellular network. Communicate automatically. [0015] Therefore, the present invention also provides a method of connecting a data communication signal to a local wireless transceiver at a first site using a first wireless digital communication path and a second wireless digital communication path. The second digital communication path provides a wider communication range and a lower communication speed than the first digital communication path. The local wireless transceiver performs wireless communication with the remote wireless transceiver at the second site. [0016] One of the wireless communication paths is selected when the first decision on whether the first wireless digital communication path is available makes a request to establish a communication session between the first and second sites. To. [0017] In one embodiment, the first wireless communication path comprises a wireless LAN connection, which preferably uses CSMA / CA (Carrier Sense Multiple Access / Collision Detection), preferably IEEE. Compliant with 802.11 specifications. The second wireless communication path includes a cellular connection. The access cost associated with the first wireless communication path is lower than the access cost associated with the second wireless communication path. Preferably, access to the first wireless path is essentially free except for setup and maintenance costs, while access to the second wireless path can be subscription-based. [0018] The local wireless transceiver can be a single transceiver capable of communicating with a second site or destination on both wireless communication paths. Alternatively, the local wireless transceiver can have two transceivers (one for each communication path). [0019] In one embodiment, the first wireless communication path is a dedicated network. On the contrary, the second wireless communication path can be a public network, in which each channel is allocated centrally. [0020] In one embodiment, the step of determining whether a first wireless communication mode is available is performed by passive scanning, such as detection of a beacon signal. In another embodiment, active scanning is used, for example by transmitting a probe request message, indicating the presence of a first wireless communication path and detecting a probe response message in response to the probe request. In yet another embodiment, determining whether a first wireless communication path is available simply comprises the step of detecting activity on the first wireless communication path. [0021] [0021] When the first wireless digital communication mode is available, a communication session is established between the first and second sites using the first wireless digital communication path. [0022] On the contrary, if the first wireless digital communication mode is not available, a communication session is established between the first and second sites using the second wireless digital communication path. In this case, by controlling the local wireless transceiver, in the second wireless digital communication path during the communication session, regardless of the actual need to transfer the data communication signal between the first and second sites. Make bandwidth available continuously. If there is no such need to transfer data communication signals between the first and second sites, bandwidth is made available for wireless communication by other wireless transceivers. [0023] In one preferred embodiment, the second wireless digital communication path is of a network layer protocol, from a subscriber unit connected to, for example, a portable computer node, to a peer node of the other party, such as another computer. This can be achieved by establishing a logical connection using such an upper layer protocol. The network layer logical connection is provided by a wireless channel that provides a physical layer connection between the portable computer node and the peer node of the other party through the base station. Depending on the relatively low utilization of wireless channels, physical layer channels are opened, while maintaining the emergence of network layer connections for higher level protocols. [0024] This has two consequences. The first result is that the wireless channel bandwidth is freely available to other subscriber units without the overhead associated with setting up a connection between terminals each time data needs to be transferred. And, perhaps more importantly, by allocating wireless channels only when needed, the bandwidth needed to provide a temporary but fast connection is available when it matters. These occur, for example, when a particular subscriber unit requests that a web page file be downloaded from the Internet. [0025] Specifically, a technique here called spoofing removes the lower layers of the protocol while reformatting the upper layer messages and sending them using an efficient CDMA-based closed protocol. [0026] BEST MODE FOR CARRYING OUT THE INVENTION The aforementioned and other objectives, features, and advantages of the present invention will become apparent in the following detailed description of preferred embodiments of the invention shown in the accompanying drawings. In drawings, the same reference numerals refer to the same parts in different drawings. The drawings are not necessarily on scale and the emphasis is on showing the principles of the invention. [0027] A specific explanation will be given with reference to the figures. FIG. 1 is a block diagram of a system 10 that executes high-speed data communication by a cellular link according to the present invention. System 10 consists of 20 remote or subscriber units, 30 multiple bidirectional communication links, and 40 local or service provider units. [0028] The subscriber unit 20 is connected to a terminal device 22 such as a portable computer or laptop computer, a PDA (Personal Digital Assistant Equipment), etc. via a computer interface 24 such as a modem. Interface 24 also provides data to the protocol converter 25, which in turn provides data to the multichannel digital transceiver 26 and antenna 27. [0029] Interface 24 receives data from computer 20 and, along with the appropriate hardware and / or software, converts the data into a format suitable for transmission in accordance with known communication standards. For example, the interface 24 converts the data signal from the terminal device 22 into a wireless physical layer protocol format, such as the format specified by the ISDN (Integrated Services Digital Network) standard at 128 kbps or the Kflex standard at 56.6 kbps. it can. At the network layer, the data preferably provided by interface 24 is formatted according to a proper network communication protocol such as TCP / IP so that the terminal device 22 can be connected to other computers via a network such as the Internet. To do. This description of Interface 24 and Protocol is provided as an example only, and other protocols may be used. [0030] The protocol converter 25 performs an intermediate protocol layer suitable for converting the data provided by the interface 24 into a format suitable for the multi-channel transceiver 26 according to the invention. This will be described in detail below. [0031] The multi-channel digital transceiver 26 comprises access to one or more physical communication links such as the illustrated radio channel 30. Preferably the physical link is a known wireless communication wireless interface that uses digital modulation, such as the CDMA (Code Division Multiple Access) standard specified in IS-95. Other wireless communication protocols and other types of links 30 can be used in favor of the present invention. [0032] Channel 30 represents one or more relatively slow communication channels operating at 9.6 kbps, which is common for voice grade communication. These communication channels can be realized by a single broadband CDMA carrier with 1.25 MHz bandwidth and individual channels with unique orthogonal CDMA codes. In an alternative method, the plurality of channels 30 can be achieved by a single channel communication medium, such as that provided by other wireless communication protocols. However, what is important is that the ultimate effect is that the channel 30 becomes a multiplexing channel that can be adversely affected by the large bit error rate inherent in each link 30. [0033] The error described here is a bit error received at a higher level such as the network layer. The present invention is intended solely for improving system-level bit error rates and does not guarantee absolute data integrity. [0034] In the local provider unit, the service provider device 40 is implemented, for example, in the Wireless Internet Service Provider (ISP) 40-1. In this case, the device is an antenna 42-1, a multi-channel transceiver 44-1, a protocol converter 46-1, and a modem, interface, router required by the ISP to provide a connection to the Internet 49-1. Including other devices such as. [0035] In ISP40-1, the multi-channel transceiver 44-1 is similar to the subscriber unit's multi-channel transceiver 26, but provides the opposite function. The same is true for protocol converter 46-1, that is, it provides the reverse function of protocol converter 25 for subscriber unit 20. The ISP40-1 receives data from the TCP / IP frame format protocol converter 46-1 and then communicates that data to interface 49-1. The configuration of the remaining ISP device 48-1 can take any number of forms, such as LAN, multiple dial-up connections, T1 carrier connection devices, or high-speed communication links to the Internet 49-1. [0036] In an alternative method, provider 40 acts as a radio base station for cellular telephones, allowing dial-up connections between terminal device 22 and server 49-2. In this case, base station 40-2 may be one or more antenna 42-2, multi-channel transceiver 44-2, and public switched telephone network (PSTN) 48-2, and finally server 49-2. Includes a protocol converter 46-2 that provides connections for. [0037] In addition to the illustrated specific examples 40-1 and 40-2, there are various methods for realizing the provider 40 and realizing the connection from the terminal device 22 to the data processing device. [0038] Next, the functions of the protocol converters 25 and 46 will be described. These can be thought of as intermediate layers within the Open System Interconnection (OSI) model of communications. Specifically, the protocol converter is a TCP / IP that provides a connection between the physical layer provided by the CDMA protocol used by the multi-channel transceiver 26 and the terminal device 22 and the Internet 49-1 or Server 49-2. It has a bandwidth management function 29 with such a network layer protocol. [0039] Preferably, the bandwidth management function 29 provides a plurality of functions to maintain both the physical layer and network layer connections properly held by the multiplex communication link 30. For example, it can be predicted that a particular physical layer connection will receive a continuous stream of synchronous data bits, regardless of which terminal terminal device actually has the data to transmit. Such features also include speed matching, combining multiple channels on the link, spoofing, radio channel setup and disassembly. [0040] In particular, the invention relates to the techniques used in the protocol converters 25 and 46, adjusting the frame size of the individual channels used by each of the multiple links 30 to generate bit error rates. Improve the effective throughput rate between the sender and receiver in the environment. It will be appreciated in the following description that the connections described here are bidirectional and the sender can be either the subscriber unit 22 or the provider unit. [0041] Specifically, FIG. 2 shows the problems to be dealt with in the present invention. The frame 60 received on the receiving side must match the frame transmitted on the transmitting side. This is required for TCP / IP or other network layer protocols, even if multiple channels are used with high bit error rates.<sup>-6</sup>Or have a received frame transmitted with high reliability with a better bit error rate. The present invention optimizes the effective data throughput so that the received frames are not affected by the bit error rate performance of the network layer connection used. [0042] Another assumption is that individual channels 30-1, 30-2 ... 30-N receive different bit error rate levels over time and on average. Each of the channels 30 can behave exactly the same, but due to the statistical nature of the error, it cannot be assumed that all of the channels 30 behave the same. For example, a particular channel 30-3 gets a lot of interference from another connection in an adjacent cell, only 10<sup>-3</sup>However, the other channels 30 receive little interference. [0043] In order to optimize the overall throughput of the system 10, it is also desirable in the present invention to individually optimize the parameters of each channel 30. Otherwise, on the relatively good channel 30-1, the slowdown measures required to fit the poorly performing channel 30-3 may be difficult. [0044] It should be understood that the number of channels 30 required to send a single data stream at a speed of 128 kbps at a given time point is relatively large. For example, up to 20 channels 30 are assigned at a particular time to accommodate the desired data transfer rate. Therefore, there is a high probability that any given channel 30 will have significantly different characteristics. [0045] Next, it will be described in detail with reference to FIG. The operation of the protocol converter 25 or 46 on the transmitting side will be specifically described. As shown in the figure, the input frame 50 received from the network layer is relatively large in size, for example, a TCP / IP frame having a length of 1480 bits. [0046] The input frame 50 is first divided into a set of small parts 54-1 and 54-2. The size of the individual portions 54 is selected based on the optimal subframe size for each of the available channels. For example, the bandwidth management function can only be performed on a certain number of channels 30 that are available at any given time. A subset of the 30 available channels is selected, and then the optimal number of bits for each subframe to be transmitted over each one of the channels is selected. In this way, as shown in the figure, the predetermined frame 54-1 is divided into parts for each of the four channels. Then there are nine channels 30 available in one frame with different optimal subframe sizes for part 54-2. [0047] Each of the subframes 56 consists of a position identifier 58a, a data portion 58b, and a trailer in the form of an integrity checksum, generally such as a periodic (cyclic) redundancy check (CRC) 58c. The position identifier 58a of each subframe indicates a position within the associated large frame 50. [0048] Subframe 56 is then compared for transmission on each channel 30. This comparison can be performed by adding the sequence number associated with each channel at the beginning of each subframe 56. After that, the subframe 56 is transmitted by the related channel 30. [0049] FIG. 4 shows the operation performed on the receiving side. The subframe 56 is first received on the individual channels 30. The subframe 56 is discarded as soon as it is received if the CRC portion 58c is inaccurate. [0050] Then remove the sequence number 58d of the remaining frame 56 and use that number to determine which subframe was lost. The lost subframe 56 can be detected by comparing the received sequence number 58d. If the sequence number is lost, it is assumed that the associated subframe 56 was not received correctly. Proper buffering of data and subframes is generally required to correctly receive subframe 56 and determine if there are lost sequence numbers that depend on transmission rate, channel number 30, and effective propagation delay. Should be understood. [0051] When the lost subframe 56 is detected, the receiving side requests that the lost subframe be retransmitted. At this point, the sender re-executes the transmission of the lost subframe. [0052] When all subframes 56 are received, position number 58a is used and the data from subframe 56 is arranged in the correct order to form the output that received frame 60. [0053] At this point, if any part of the large output frame 60 is still lost, such as when the end of the frame instruction occurs, specify the length of the lost part and retransmit the corresponding subframe. Can be requested again at the specified position. [0054] Since both the position number and the sequence number are used, the transmitter and receiver recognize the ratio of the number of frames received without error to the number of subframes received with error. Also, the transmitter and receiver recognize the average subframe length of each channel. Therefore, the optimum subframe size can be determined for each channel from these parameters. In this regard, U.S. Patent Application No. 09 / 030,049 (filed February 24, 1998), Invention title "Dynamic frame size in multi-link channels to improve effective throughput and bit error rate. It is described in detail in "Adjustment and Selective Removal". The application is hereby incorporated by reference in its entirety as part of the specification of the present application and has been transferred to the assignee of this application, Tantivy Communications Corp.,. [0055] In Fig. 5, a wide area / low speed wireless cellular communication network (wide area network) is superimposed on a narrow area / high speed wireless LAN (W-LAN). Especially in wide area / low speed systems, there is a digital cellular mobile telephone system, there are multiple wide areas or "cells" 601 and 603, which provide coverage over a given physical area. There is. The range or receivable range of each cell 601 and 603 is, for example, on the order of a radius of 1 mile or more. [0056] Cellular base station 605 transmits and receives data through its antenna 171 to mobile units located within associated cell 601. Base station 605 is connected to a public network 619, such as a public switched telephone network (PSTN), or preferably a POP (point of presence) or other data connection 621 to the Internet. [0057] Wireless LAN (W-LAN) 607 is shown in cell 601 associated with base station 605. Some terminal devices or computers 609 are directly connected to W-LAN607, including gateway 609A, which is also connected to public network 619 via any known means 621. In addition, two wireless LAN hubs 611A and 611B are connected to LAN607. Each wireless LAN 611 has a receivable range 613A, 613B, and the receivable areas of the two hubs 611A, 611B overlap as shown in FIG. The coverage area of 613A, 613B is generally on the order of tens or hundreds of feet, which is much smaller than cells 601, 603 associated with wide area networks. In this regard, it is especially important to note that Figure 5 does not show scale. [0058] [0058] Two subscriber units or terminal devices, such as portable computers, using the present invention are also shown. The first terminal device 615 is within the range 613A of the wireless LAN base station 611, while the second terminal device 617 is outside the range of both the wireless LAN base stations 611A and 611B, but of the wide area network base station 605. It is within range 601. [0059] Communication within the narrow area wireless LAN 613A or 613B is faster and lower cost than the wide area network, and the user's computer terminal device 615 is within the range of the W-LAN base station 611, that is, within the receivable range 613A and 613B. When it is, it is desirable to communicate using a narrow route, that is, the W-LAN protocol, rather than a high-cost wide area network. [0060] On the contrary, a terminal such as the terminal device 617, which does not exist within the range of the wireless LAN base station 611, automatically communicates via the wide area network base station 605. [0061] Thus, terminal devices such as the 615 or 617 are IEEE. Detecting the presence or availability of a wireless LAN hub 611A or 611B, such as an 802.11 compliant W-LAN, is a primary embodiment of the invention. This can be achieved in several ways. For example, IEEE 802.11 stipulates that beacon frames must be transmitted at regular time intervals. Terminal devices 615,617 can detect beacon frames by waiting for a minimum length of time equal to the beacon time interval. For example, Geire, J.,<u style="single">Wireless</u><u style="single"></u><u style="single">LANs</u>(Macmillan Technical Publishing, 1999), pp. 137 and 149, describes how to format a W-LAN beacon signal. The above contents are cited in the present specification. [0062] Alternatively, a terminal such as the 615 can actively send probe request frames. The wireless LAN base station 611 that receives such a probe request frame responds with the probe response frame. The receipt of the probe response frame by the terminal device 615 indicates the accessibility of the wireless LAN, and the terminal device 615 uses the wireless LAN and bypasses the wide area network. [0063] On the other hand, if the beacon is not received within a specific time length or the probe response frame is not returned from the base frame, as in the case of using the terminal device 617, the terminal device cannot be accessed by the wireless LAN base station 611. Instead, use the wide area network protocol instead of the IEEE 802.11 protocol to communicate with the wide area base station. [0064] Yet another alternative is to simply listen to the activity on the wireless LAN 611. If the activity cannot be heard, the terminal devices 615 and 617 determine that the LAN is inaccessible and use the wide area communication system. [0065] FIG. 6 shows a terminal device 615 including a subscriber unit 615 incorporating the embodiments of the present invention. A user of this terminal device 615 wants to communicate with a second site using a portable computer 110, PDA or other similar device. The computer 110 is connected to the subscriber unit 101. For example, the subscriber unit 101 may be a PCMCIA card that plugs into a PCMCIA slot, or the unit may be connected to a computer 110 using a modem cable. [0066] Preferably, the subscriber unit 101 is a CDMA protocol converter 130, a CDMA transceiver 140, a W-LAN protocol converter 230, W- It consists of a LAN transceiver 240, a W-LAN detection circuit 201, route selection switches 211A and 211B, and a subscriber unit antenna 150. The various components of subscriber unit 101 can be implemented in discrete devices or integrated circuits. For example, existing traditional computer interfaces 120, such as PCMCIA, ISA bus, PCI bus, or all other computer interfaces, can be used with existing transceivers 140, 240. In this case, the unique functions are provided entirely by the individual devices, the W-LAN detection circuit 201 and the protocol converters 130, 230 sold as mode selection switches 211A, 211B. [0067] Alternatively, the interface 120, protocol converters 130,233, and transceivers 140,240 can be integrated as a complete unit and sold as a single subscriber unit device 101. The computer device 110 can be connected to the protocol converter 130 using other types of interface connections such as Ethernet, ISDN, or other data connections. [0068] The CDMA protocol converter 130 performs spoofing 132 and basic bandwidth management 134 functions. In general, spoofing 132 guarantees to terminal device 110 that subscriber unit 101 is always connected to public network 619 (FIG. 5) on a side other than base station 605. [0069] The bandwidth management function 134 allocates and deallocates the CDMA radio channel 160 as needed. The bandwidth management function 134 also includes dynamic management of the bandwidth allocated to a predetermined session by dynamically allocating sub-parts of the CDMA radio channel 160 in a manner using the protocol as described above. .. [0070] The CDMA transceiver 140 receives data from the protocol converter 130 and reformulates this data into a format suitable for transmission over the subscriber unit antenna 150 over the wireless link 160. The CDMA transceiver 140 can operate on only a single 1.25 MHz radio frequency channel and, in the alternative, can be tuned by a multi-allocated radio frequency channel. [0071] The CDMA signal transmission is then received and processed by the base station apparatus 605 (FIG. 5). Base station 605 then couples the demodulated radio signal to public network 619, for example, by methods known in the art. For example, base station 605 can communicate with public network 619 via any number of different efficient communication protocols (basic speed, ISDN, or other LAPD-based protocols such as IS-634 or V5.2). [0072] The data signal travels bidirectionally across the CDMA radio channel 160. In other words, the data signal received from the public network 619 couples the portable computer 110 in the forward link direction, and the data sent from the portable computer 110 joins the public network 619 in the so-called reverse link direction. Will be done. [0073] For the sake of simplicity, the explanation is continued by quoting Fig. 6. In wide-area, low-speed data transfer rate mode, the spoofing function 132 includes looping back the sync data bits to the CDMA transceiver 140, spoofing (deceiving) the terminal device 110, and a very wide wireless communication link 160. Make them believe that they are available continuously. However, wireless bandwidth is allocated only when the actual data exists from the terminal device to the CDMA transceiver 140. Therefore, the network layer does not need to allocate the allocated wireless bandwidth for the entire communication session. That is, when the data does not appear on the terminal device to the network device, the bandwidth management function 134 deallocates the originally allocated radio channel bandwidth 160 and assigns it to another transceiver and another subscriber. Make it available in unit 101. [0074] The W-LAN detection circuit 201 detects the presence or availability of the W-LAN base station 611, for example using one of the techniques described above. If the W-LAN base station is not detected, the detection circuit 201 controls switches 211A and 211B to switch the CDMA protocol converter 130 with the CDMA140. [0075] Conversely, if a W-LAN base station is detected, switches 211A and 211B are switched to the locations shown, preferably utilizing an IEEE 802.11 compliant W-LAN protocol converter 230 and transceiver 240. The route switches 211A and 211B can be realized by software, hardware, or a combination of both. Other functions are also feasible in hardware and / or software, which can be shared in the W-LAN and CDMA sections where appropriate. [0076] Further, even if communication fails via a narrow area / high speed route for any reason (for example, communication cannot be completed after a specific predetermined time length), a wide area / low speed CDMA route can be selected. [0077] Although the present invention has been illustrated and described in detail in preferred embodiments, those skilled in the art will be able to make various changes in shape or detail without departing from the spirit and scope of the invention contained in the appended claims. It will be understood that it is feasible. [Simple explanation of drawings] FIG. 1 is a block diagram of a system in which a portable device, such as a laptop computer, is connected to a computer network via a wireless cellular link using a protocol converter according to the invention. FIG. 2 shows a method of dividing a network layer data frame into a plurality of physical links or channels. FIG. 3 is a diagram showing in detail a method of dividing a network layer data frame into subframes by a protocol converter on the transmitting side. FIG. 4 is a continuation of FIG. FIG. 5 is a schematic diagram in which a narrow-area / high-speed wireless LAN and a wide-area / low-speed wireless communication network are overlapped. FIG. 6 is a higher level block diagram of the subscriber unit of the present invention.
Every citation, both ways
| Document | Relation | Office |
|---|---|---|
| JP11075237A | Cites | Japan |
| WO98059523A1 | Cites | World Intellectual Property Organization (WIPO) |
| JP08256065A | Cites | Japan |
| JP09205513A | Cites | Japan |
| JP11113071A | Cites | Japan |
| JP08293889A | Cites | Japan |
86 members in 13 offices
Priority claims9
| Document | Office | Kind | Date |
|---|---|---|---|
| 09400136 | United States of America | – | |
| 40013699 | United States of America | A | |
| 40013699 | United States of America | A | |
| 0023586 | United States of America | W | |
| 0023586 | United States of America | W | |
| 1999400136 | – | – | – |
| 2000023586 | – | – | – |
| US19990400136 | – | – | – |
| WO2000US23586 | – | – | – |
Members86
| Document | Office | Kind | |
|---|---|---|---|
| NO20150587L | Norway | L | |
| WO0122662A1 | World Intellectual Property Organization (WIPO) | A1 | |
| AU7082000A | Australia | A | |
| NO20021385D0 | Norway | D0 | |
| NO20021385L | Norway | L | |
| NO20121342L | Norway | L | |
| NO20121343L | Norway | L | |
| EP1214815A1 | European Patent Office (EPO) | A1 | |
| KR20020047181A | Republic of Korea | A | |
| US6526034B1 | United States of America | B1 | |
| JP2003510897A | Japan | A | |
| US2004018854A1 | United States of America | A1 | |
| US2004029612A1 | United States of America | A1 | |
| WO2004064308A2 | World Intellectual Property Organization (WIPO) | A2 | |
| TW200415927A | Taiwan Province of China | A | |
| WO2004064308A3 | World Intellectual Property Organization (WIPO) | A3 | |
| WO2004064308B1 | World Intellectual Property Organization (WIPO) | B1 | |
| NO20053590D0 | Norway | D0 | |
| NO20053590L | Norway | L | |
| KR20050092042A | Republic of Korea | A | |
| EP1590977A2 | European Patent Office (EPO) | A2 | |
| US7013162B2 | United States of America | B2 | |
| US7024222B2 | United States of America | B2 | |
| US2006116129A1 | United States of America | A1 | |
| JP2006516376A | Japan | A | |
| KR20070064659A | Republic of Korea | A | |
| KR20070085493A | Republic of Korea | A | |
| EP1214815B1 | European Patent Office (EPO) | B1 | |
| AT400112T | Austria | T | |
| KR20080068902A | Republic of Korea | A | |
| EP1953970A2 | European Patent Office (EPO) | A2 | |
| DE60039360D1 | Germany | D1 | |
| DK1214815T3 | Denmark | T3 | |
| ES2308992T3 | Spain | T3 | |
| KR20090031439A | Republic of Korea | A | |
| KR100897840B1 | Republic of Korea | B1 | |
| HK1125759A1 | Hong Kong, China | A1 | |
| EP1953970A3 | European Patent Office (EPO) | A3 | |
| JP2009247010A | Japan | A | |
| JP2009247011A | Japan | A | |
| US7616970B2 | United States of America | B2 | |
| JP4461195B2 | Japan | B2 | |
| JP2010136445A | Japan | A | |
| KR20100089102A | Republic of Korea | A | |
| US2010202425A1 | United States of America | A1 | |
| EP2259498A2 | European Patent Office (EPO) | A2 | |
| JP4603748B2This record | Japan | B2 | |
| EP1590977A4 | European Patent Office (EPO) | A4 | |
| EP2259498A3 | European Patent Office (EPO) | A3 | |
| KR20110050742A | Republic of Korea | A | |
| KR101049227B1 | Republic of Korea | B1 | |
| JP2011166805A | Japan | A | |
| KR101066154B1 | Republic of Korea | B1 | |
| EP1953970B1 | European Patent Office (EPO) | B1 | |
| AT526754T | Austria | T | |
| DK1953970T3 | Denmark | T3 | |
| KR101100953B1 | Republic of Korea | B1 | |
| KR101101029B1 | Republic of Korea | B1 | |
| ES2372642T3 | Spain | T3 | |
| HK1151658A1 | Hong Kong, China | A1 | |
| KR20120034741A | Republic of Korea | A | |
| JP2012157076A | Japan | A | |
| KR20130009862A | Republic of Korea | A | |
| US8380244B2 | United States of America | B2 | |
| NO333132B1 | Norway | B1 | |
| EP2259498B1 | European Patent Office (EPO) | B1 | |
| US2013143551A1 | United States of America | A1 | |
| DK2259498T3 | Denmark | T3 | |
| ES2419681T3 | Spain | T3 | |
| JP2013168970A | Japan | A | |
| JP5291022B2 | Japan | B2 | |
| KR20130105731A | Republic of Korea | A | |
| KR101335060B1 | Republic of Korea | B1 | |
| KR20140065019A | Republic of Korea | A | |
| JP2015019410A | Japan | A | |
| KR20150027837A | Republic of Korea | A | |
| US2015133187A1 | United States of America | A1 | |
| NO336682B1 | Norway | B1 | |
| NO336684B1 | Norway | B1 | |
| KR20160029143A | Republic of Korea | A | |
| US9408253B2 | United States of America | B2 | |
| US9420632B2 | United States of America | B2 | |
| US2016353508A1 | United States of America | A1 | |
| JP2017073779A | Japan | A | |
| KR101735036B1 | Republic of Korea | B1 | |
| KR20170053747A | Republic of Korea | A |
28 legal events, as the office reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | |
|---|---|---|
| Cancellation because of no payment of annual feesLAPS | LAPS | |
| Receipt of annual feesJAPANESE INTERMEDIATE CODE: R250R250 | R250 | |
| Receipt of annual feesJAPANESE INTERMEDIATE CODE: R250R250 | R250 | |
| Receipt of annual feesJAPANESE INTERMEDIATE CODE: R250R250 | R250 | |
| Receipt of annual feesJAPANESE INTERMEDIATE CODE: R250R250 | R250 | |
| Receipt of annual feesJAPANESE INTERMEDIATE CODE: R250R250 | R250 | |
| Renewal fee payment (event date is renewal date of database)FPAY | FPAY | |
| Certificate of patent or registration of utility modelJAPANESE INTERMEDIATE CODE: R150R150 | R150 | |
| First payment of annual fees (during grant procedure)JAPANESE INTERMEDIATE CODE: A61A61 | A61 | |
| Written decision to grant a patent or to grant a registration (utility model)JAPANESE INTERMEDIATE CODE: A01A01 | A01 | |
| Written decision to grant a patent or to grant a registration (utility model)JAPANESE INTERMEDIATE CODE: A01A01 | A01 | |
| Decision of grant or rejection writtenTRDD | TRDD | |
| Transfer to examiner for re-examination before appeal (zenchi)AppealJAPANESE INTERMEDIATE CODE: A911A911 | A911 | |
| Written amendmentJAPANESE INTERMEDIATE CODE: A821A521 | A521 | |
| Notification of appointment of power of sub attorneyJAPANESE INTERMEDIATE CODE: A7433RD13 | RD13 | |
| Written amendmentJAPANESE INTERMEDIATE CODE: A523A521 | A521 | |
| Decision of refusalJAPANESE INTERMEDIATE CODE: A02A02 | A02 | |
| Written amendmentJAPANESE INTERMEDIATE CODE: A523A521 | A521 | |
| Written permission of extension of timeJAPANESE INTERMEDIATE CODE: A602A602 | A602 | |
| Written request for extension of timeJAPANESE INTERMEDIATE CODE: A601A601 | A601 | |
| Notification of reasons for refusalJAPANESE INTERMEDIATE CODE: A131A131 | A131 | |
| Written amendmentJAPANESE INTERMEDIATE CODE: A821A521 | A521 | |
| Notification of resignation of power of attorneyJAPANESE INTERMEDIATE CODE: A7424RD04 | RD04 | |
| Written amendmentJAPANESE INTERMEDIATE CODE: A821A521 | A521 | |
| Notification of acceptance of power of attorneyJAPANESE INTERMEDIATE CODE: A7422RD02 | RD02 | |
| Written request for application examinationJAPANESE INTERMEDIATE CODE: A621A621 | A621 | |
| Notification of change in applicantJAPANESE INTERMEDIATE CODE: A711A711 | A711 | |
| Notification of change in applicantJAPANESE INTERMEDIATE CODE: A711A711 | A711 |
Numbers
- Publication
- 4603748
- Publication, DOCDB
- 4603748
- Publication, EPODOC
- JP4603748B
- Application
- 2001525902
- Application, DOCDB
- 2001525902
- Application, EPODOC
- JP20010525902
Titles2
- Japanese
- 狭域・高速データ通信および広域・低速データ通信用のデュアル・モード加入者ユニット
- English
- Dual mode subscriber unit for narrow area / high speed data communication and wide area / low speed data communication
Classification
- CPC, 11
- H04W48/18
- H04W48/10
- H04W72/02
- H04W76/30
- H04W76/15
- H04W88/06
- H04W80/04
- H04W80/06
- H04W24/08
- H04W76/25
- H04W84/12
- IPC, 6
- H04W84 12
- H04B7 26
- H04L12 28
- H04W48 18
- H04W72 02
- H04W88 06