JP2009005379A - 通信端末装置及びその通信方法 - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
- H04W28/22—Negotiating communication rate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
- H04W52/265—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account the quality of service QoS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
- H04W52/267—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account the information rate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0025—Transmission of mode-switching indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
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Abstract
【解決手段】通信端末装置において受信品質を測定し、その測定結果を基地局装置に報告し、基地局装置において受信品質の報告結果に基づいて伝送レートを切り替える。これにより、通信端末装置の受信品質が悪くなった時点を起点として、伝送レート切り替えを行う。また、通信端末装置と基地局装置の通信路状態に応じて、他への干渉量を許容できる範囲内となるように伝送レートを切り替える。
【選択図】図1
Description
図1は、本発明の実施の形態1に係る基地局装置の構成を示すブロック図である。この基地局装置では、アンテナ101で信号した信号は、送信と受信で同一のアンテナを用いるためのアンテナ共用器102を通じて受信RF回路103に送られる。受信RF回路103では、受信信号が増幅され、中間周波数又はベースバンド周波数に周波数変換される。
図16は、本発明の実施の形態2に係る基地局装置の構成を示すブロック図である。
102,202 アンテナ共用器
103,203 受信RF回路
104,204 復調回路
105 分離回路
106 伝送レート切り替え制御回路
107 送信フレーム作成回路
108,207 変調回路
109,208 送信RF回路
205 SIR測定回路
206 多重回路
301,401 複素乗算回路
302,402 複素共役回路
303 電力測定回路
403 所望電力測定回路
404 干渉電力+雑音電力測定回路
405 比算出回路
Claims (14)
- 受信品質情報と、多重コード数にしたがって設定された閾値との比較結果に基づいて送信信号の伝送レートを切り替えるCDMA通信方式の無線通信システムで使用される通信端末装置であって、
基地局装置から送信される信号を受信する受信部と、
前記受信部で受信する信号の受信品質を推定する受信品質推定部と、
伝送レートを切り替えるために前記受信品質推定部で推定された前記受信品質を示す前記受信品質情報を送信する送信部と、
を具備することを特徴とする通信端末装置。 - 送信電力制御情報と、多重コード数にしたがって設定された閾値との比較結果に基づいて送信信号の伝送レートを切り替えるCDMA通信方式の無線通信システムで使用される通信端末装置であって、
基地局装置から送信される信号を受信する受信部と、
前記受信部で受信する信号の受信品質を推定する受信品質推定部と、
伝送レートを切り替えるために前記受信品質推定部で推定された前記受信品質に基づいた前記送信電力制御情報を送信する送信部と、
を具備することを特徴とする通信端末装置。 - 受信品質情報と、多重コード数にしたがって設定された閾値との比較結果に基づいて送信信号の伝送レートを切り替える伝送レート切り替え手段と、切り替えられた伝送レートで送信信号を送信する送信手段と、を具備するCDMA通信方式の基地局装置と通信する通信端末装置であって、
前記基地局装置から送信される信号を受信する受信部と、
前記受信部で受信する信号の受信品質を推定する受信品質推定部と、
伝送レートを切り替えるために前記受信品質推定部で推定された前記受信品質を示す前記受信品質情報を送信する送信部と、
を具備することを特徴とする通信端末装置。 - 送信電力制御情報と、多重コード数にしたがって設定された閾値との比較結果に基づいて送信信号の伝送レートを切り替える伝送レート切り替え手段と、切り替えられた伝送レートで送信信号を送信する送信手段と、を具備するCDMA通信方式の基地局装置、と通信する通信端末装置であって、
前記基地局装置から送信される信号を受信する受信部と、
前記受信部で受信する信号の受信品質を推定する受信品質推定部と、
伝送レートを切り替えるために前記受信品質推定部で推定された前記受信品質に基づいた前記送信電力制御情報を送信する送信部と、
を具備することを特徴とする通信端末装置。 - CDMA通信方式の無線通信システムで使用される通信端末装置であって、
基地局装置から送信される信号を受信する受信部と、
前記受信部で受信する信号の受信品質を推定する受信品質推定部と、
前記基地局装置において、前記受信推定部で推定された前記受信品質を示す受信品質情報と、多重コード数にしたがって設定された閾値との比較結果に基づいて伝送レートを切り替えるために前記受信品質情報を送信する送信部と、
を具備することを特徴とする通信端末装置。 - CDMA通信方式の無線通信システムで使用される通信端末装置であって、
基地局装置から送信される信号を受信する受信部と、
前記受信部で受信する信号の受信品質を推定する受信品質推定部と、
前記基地局装置において、前記受信品質推定部で推定された前記受信品質に基づいた送信電力制御情報と、多重コード数にしたがって設定された閾値との比較結果に基づいて送信信号の伝送レートを切り替えるために前記送信電力制御情報を送信する送信部と、
を具備することを特徴とする通信端末装置。 - 前記受信部は、前記切り替えられた伝送レートで送信された前記基地局装置から送信された信号をさらに受信する、ことを特徴とする請求項1から請求項6のいずれかに記載の通信端末装置。
- 受信品質情報と、多重コード数にしたがって設定された閾値との比較結果に基づいて送信信号の伝送レートを切り替えるCDMA通信方式の無線通信システムで使用される通信端末装置の通信方法であって、
基地局装置から送信される信号を受信する受信工程と、
前記受信工程で受信する信号の受信品質を推定する受信品質推定工程と、
伝送レートを切り替えるために前記受信品質推定工程で推定された前記受信品質を示す前記受信品質情報を送信する送信工程と、
を具備することを特徴とする通信端末装置の通信方法。 - 送信電力制御情報と、多重コード数にしたがって設定された閾値との比較結果に基づいて送信信号の伝送レートを切り替えるCDMA通信方式の無線通信システムで使用される通信端末装置の通信方法であって、
基地局装置から送信される信号を受信する受信工程と、
前記受信工程で受信する信号の受信品質を推定する受信品質推定工程と、
伝送レートを切り替えるために前記受信品質推定部で推定された前記受信品質に基づいた前記送信電力制御情報を送信する送信工程と、
を具備することを特徴とする通信端末装置の通信方法。 - 受信品質情報と、多重コード数にしたがって設定された閾値との比較結果に基づいて送信信号の伝送レートを切り替える伝送レート切り替え手段と、切り替えられた伝送レートで送信信号を送信する送信手段と、を具備するCDMA通信方式の基地局装置と通信する通信端末装置の通信方法であって、
前記基地局装置から送信される信号を受信する受信工程と、
前記受信工程で受信する信号の受信品質を推定する受信品質推定工程と、
伝送レートを切り替えるために前記受信品質推定工程で推定された前記受信品質を示す前記受信品質情報を送信する送信工程と、
を具備することを特徴とする通信端末装置の通信方法。 - 送信電力制御情報と、多重コード数にしたがって設定された閾値との比較結果に基づいて送信信号の伝送レートを切り替える伝送レート切り替え手段と、切り替えられた伝送レートで送信信号を送信する送信手段と、を具備するCDMA通信方式の基地局装置、と通信する通信端末装置の通信方法であって、
前記基地局装置から送信される信号を受信する受信工程と、
前記受信工程で受信する信号の受信品質を推定する受信品質推定工程と、
伝送レートを切り替えるために前記受信品質推定部で推定された前記受信品質に基づいた前記送信電力制御情報を送信する送信工程と、
を具備することを特徴とする通信端末装置の通信方法。 - CDMA通信方式の無線通信システムで使用される通信端末装置の通信方法であって、
基地局装置から送信される信号を受信する受信工程と、
前記受信工程で受信する信号の受信品質を推定する受信品質推定工程と、
前記基地局装置において、前記受信推定工程で推定された前記受信品質を示す受信品質情報と、多重コード数にしたがって設定された閾値との比較結果に基づいて伝送レートを制御するために前記受信品質情報を送信する送信工程と、
を具備することを特徴とする通信端末装置の通信方法。 - CDMA通信方式の無線通信システムで使用される通信端末装置の通信方法であって、
基地局装置から送信される信号を受信する受信工程と、
前記受信工程で受信する信号の受信品質を推定する受信品質推定工程と、
前記基地局装置において、送信電力制御情報と、多重コード数にしたがって設定された閾値との比較結果に基づいて送信信号の伝送レートを切り替えるために前記受信品質推定部で推定された前記受信品質に基づいた前記送信電力制御情報を送信する送信工程と、
を具備することを特徴とする通信端末装置の通信方法。 - 前記受信工程は、前記切り替えられた伝送レートで送信された前記基地局装置から送信された信号をさらに受信する、ことを特徴とする請求項8から請求項13のいずれかに記載の通信端末装置の通信方法。
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