JP4725392B2 - Scheduling method, rate control method, and radio base station apparatus in W-CDMA radio base station apparatus - Google Patents

Scheduling method, rate control method, and radio base station apparatus in W-CDMA radio base station apparatus Download PDF

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JP4725392B2
JP4725392B2 JP2006097098A JP2006097098A JP4725392B2 JP 4725392 B2 JP4725392 B2 JP 4725392B2 JP 2006097098 A JP2006097098 A JP 2006097098A JP 2006097098 A JP2006097098 A JP 2006097098A JP 4725392 B2 JP4725392 B2 JP 4725392B2
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達明 松本
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本発明は、Ｗ−ＣＤＭＡ（Wideband-Code Division Multiple Access：広帯域符号分割多重接続）方式の無線基地局装置にＥＵＤＣＨ（Enhanced Uplink Dedicated Channel）を用いた上り高速パケット伝送方式を採用した場合のスケジューリング方法及びレート制御方法並びに無線基地局装置に関するものである。   The present invention relates to a scheduling method in a case where an uplink high-speed packet transmission scheme using EUDCH (Enhanced Uplink Dedicated Channel) is adopted in a radio base station apparatus of W-CDMA (Wideband-Code Division Multiple Access) scheme. And a rate control method and a radio base station apparatus.

特許文献１（特開２００５−７３２７６号公報）には、上りリンクパケットデータサービスのスケジューリング割当のために、使用者端末（無線端末）が伝送しようとするパケットデータを格納しているバッファーのバッファー状態情報を、無線端末から無線基地局へ報告して無線基地局でのスケジューリングに反映させる方法であって、固有の優先順位を持ち、少なくとも一つのサービスに関連する複数の優先順位キューに、該当する優先順位を持つパケットデータを格納し、これらの優先順位キューのキュー識別子とこれらの優先順位キューに格納されているパケットデータの量を表すバッファーペイロード情報とを含むバッファー状態情報を伝送する方法が開示されている。   Patent Document 1 (Japanese Patent Laid-Open No. 2005-73276) discloses a buffer state of a buffer that stores packet data to be transmitted by a user terminal (wireless terminal) for scheduling allocation of an uplink packet data service. A method of reporting information from a wireless terminal to a wireless base station and reflecting it in scheduling at the wireless base station, which has a specific priority and corresponds to a plurality of priority queues related to at least one service A method for storing packet data having priorities and transmitting buffer state information including queue identifiers of these priority queues and buffer payload information representing the amount of packet data stored in these priority queues is disclosed. Has been.

しかし、この方法によると、上記のような処理を端末毎に行わなければならないのに加え、無線基地局側でも、端末毎の要求に応じてそれを反映させるためのスケジューリング割当処理を行わなければならない。
特開２００５−７３２７６号公報 However, according to this method, in addition to the above-described processing being performed for each terminal, the radio base station side must perform scheduling allocation processing for reflecting it in response to a request for each terminal. Don't be.
Japanese Patent Laid-Open No. 2005-73276

本発明の第１の課題は、ＥＵＤＣＨを用いた上り高速パケット伝送方式を採用した場合に、無線基地局側においてスループットの向上が図れるスケジューリング方法を提供することにある。
これに加えて第２の課題は、無線基地局における復号処理の途中で品質の悪いものに対してＮＡＣＫの判断をすることにより、無線基地局の処理負荷の軽減が図れるようにすることにある。
第３の課題は、無線基地局側において最適な上りのレート制御を行えるようにすることにある。 A first object of the present invention is to provide a scheduling method capable of improving throughput on the radio base station side when an uplink high-speed packet transmission scheme using EUDCH is adopted.
In addition to this, the second problem is to reduce the processing load of the radio base station by making a NACK decision for those of poor quality during the decoding process in the radio base station. .
The third problem is to enable optimum uplink rate control on the radio base station side.

第１の課題を達成するため、請求項１に係る本発明は、無線端末からの上り受信信号のＥ−ＤＰＤＣＨ、Ｅ−ＤＰＣＣＨ及びＤＰＣＨについて、少なくともそれぞれの逆拡散処理を行うＥ−ＤＰＤＣＨ逆拡散部、Ｅ−ＤＰＣＣＨ逆拡散部及びＤＰＣＨ逆拡散部を備えたＷ−ＣＤＭＡ方式の無線基地局装置におけるスケジューリング方法であって、前記ＤＰＣＨ逆散処理部からの情報に従い受信品質を測定する第１の受信品質測定ステップと、その受信品質測定情報及び前記Ｅ−ＤＰＣＣＨ復号処理部から得られる情報をもとに、復号するデータの優先度付けを行う優先度判定ステップと、決定した優先度に応じて割り当てられる複数のキューをもつ優先度キューを生成する優先度キュー生成ステップと、その優先度キューからデータを取り出して、レート・デマッチング処理までの復号処理を実施するＥ−ＤＰＣＨ復号処理ステップとを有する。   In order to achieve the first problem, the present invention according to claim 1 is directed to E-DPDCH despreading that performs at least each despreading process on E-DPDCH, E-DPCCH, and DPCH of uplink reception signals from wireless terminals. , A E-DPCCH despreading unit and a DPCH despreading unit in a W-CDMA radio base station apparatus, wherein the reception quality is measured according to information from the DPCH despreading processing unit A reception quality measurement step, a priority determination step for prioritizing data to be decoded based on the reception quality measurement information and the information obtained from the E-DPCCH decoding processing unit, and the determined priority A priority queue generation step for generating a priority queue having a plurality of queues to be assigned, and fetching data from the priority queue Te, and an E-DPCH decoding process step of performing the decoding process to the rate de-matching process.

同様に、請求項４に係る本発明は、無線端末からの上り受信信号のＥ−ＤＰＤＣＨ、Ｅ−ＤＰＣＣＨ及びＤＰＣＨについて、少なくともそれぞれの逆拡散処理を行うＥ−ＤＰＤＣＨ逆拡散部、Ｅ−ＤＰＣＣＨ逆拡散部及びＤＰＣＨ逆拡散部を備えたＷ−ＣＤＭＡ方式の無線基地局装置において、前記ＤＰＣＨ逆散処理部からの情報に従い受信品質を測定する第１の受信品質測定部と、その受信品質測定情報及び前記Ｅ−ＤＰＣＣＨ復号処理部から得られる情報をもとに、復号するデータの優先度付けを行う優先度判定部と、決定した優先度に応じて割り当てられる複数のキューをもつ優先度キューを生成する優先度キュー生成部と、その優先度キューからデータを取り出して、レート・デマッチング処理までの復号処理を実施するＥ−ＤＰＣＨ復号処理部とを有する。   Similarly, the present invention according to claim 4 is an E-DPDCH despreading unit that performs at least each despreading process on E-DPDCH, E-DPCCH, and DPCH of an uplink received signal from a wireless terminal, In a W-CDMA wireless base station apparatus including a spreading unit and a DPCH despreading unit, a first reception quality measuring unit that measures reception quality according to information from the DPCH despreading processing unit, and its reception quality measurement information And a priority determination unit that prioritizes data to be decoded based on information obtained from the E-DPCCH decoding processing unit, and a priority queue having a plurality of queues assigned according to the determined priority. A priority queue generation unit to generate, and an E-DPC that extracts data from the priority queue and performs decoding processing up to rate dematching processing And a decoding processing unit.

第２の課題も達成するため、請求項２に係る本発明は、さらに、Ｅ−ＤＰＣＨ復号処理の出力データに対して誤り訂正を実施する誤り訂正処理ステップと、この誤り訂正処理後の情報に従い、誤り訂正前の品質であるTransport Channel BERを測定する第２の受信品質測定ステップと、誤り訂正後、ＣＲＣ判定までの復号処理を実施するＥ−ＤＣＨ復号処理ステップと、そのＥ−ＤＣＨ復号処理の結果及び前記第２の受信品質測定結果をもとに、無線端末に対するＡＣＫ／ＮＡＣＫの通知を判定するＡＣＫ／ＮＡＣＫ判定ステップとを有する。   In order to achieve the second problem, the present invention according to claim 2 further includes an error correction processing step for performing error correction on the output data of the E-DPCH decoding process, and information after the error correction process. A second reception quality measurement step for measuring Transport Channel BER, which is the quality before error correction, an E-DCH decoding processing step for performing decoding processing after error correction up to CRC determination, and the E-DCH decoding processing And an ACK / NACK determination step for determining ACK / NACK notification to the wireless terminal based on the result of the above and the second reception quality measurement result.

同様に、請求項５に係る本発明の無線基地局装置は、さらに、Ｅ−ＤＰＣＨ復号処理の出力データに対して誤り訂正を実施する誤り訂正処理部と、この誤り訂正処理後の情報に従い、誤り訂正前の品質であるTransport Channel BERを測定する第２の受信品質測定部と、誤り訂正後、ＣＲＣ判定までの復号処理を実施するＥ−ＤＣＨ復号処理部と、そのＥ−ＤＣＨ復号処理の結果及び前記第２の受信品質測定結果をもとに、無線端末に対するＡＣＫ／ＮＡＣＫの通知を判定するＡＣＫ／ＮＡＣＫ判定部とを有する。   Similarly, the radio base station apparatus of the present invention according to claim 5 further includes an error correction processing unit that performs error correction on output data of the E-DPCH decoding process, and information after the error correction process, A second reception quality measurement unit that measures Transport Channel BER that is quality before error correction, an E-DCH decoding processing unit that performs decoding processing up to CRC determination after error correction, and the E-DCH decoding processing An ACK / NACK determination unit that determines notification of ACK / NACK to the wireless terminal based on the result and the second reception quality measurement result.

第３の課題も達成するため、請求項２に係る本発明の上りレート制御方法は、上記のステップに加え、さらに、ＡＣＫ／ＮＡＣＫ判定の結果より、下りＥ−ＨＩＣＨ信号を生成するＥ−ＨＩＣＨ生成ステップと、前記第１の受信品質測定の情報及び前記第２の受信品質測定の情報を用いて、上りＥ−ＤＰＤＣＨの送信電力を制御するためのＥ−ＲＧＣＨの生成を実施するＥ−ＲＧＣＨ生成ステップとを有する。   In order to achieve the third problem, the uplink rate control method of the present invention according to claim 2 further includes an E-HICH that generates a downlink E-HICH signal based on the result of ACK / NACK determination in addition to the above steps. E-RGCH for generating E-RGCH for controlling the transmission power of uplink E-DPDCH using the generation step and the information on the first reception quality measurement and the information on the second reception quality measurement Generating step.

同様に、請求項６に係る本発明の無線基地局装置は、さらに、ＡＣＫ／ＮＡＣＫ判定の結果より、下りＥ−ＨＩＣＨ信号を生成するＥ−ＨＩＣＨ生成部と、第１の受信品質測定の情報及び第２の受信品質測定の情報を用いて、上りＥ−ＤＰＤＣＨの送信電力を制御するためのＥ−ＲＧＣＨの生成を実施するＥ−ＲＧＣＨ生成部とを有する。   Similarly, the radio base station apparatus of the present invention according to claim 6 further includes an E-HICH generation unit that generates a downlink E-HICH signal based on an ACK / NACK determination result, and information on first reception quality measurement And an E-RGCH generation unit that generates an E-RGCH for controlling the transmission power of the uplink E-DPDCH using the information of the second reception quality measurement.

請求項１及び請求項４に係る発明によれば、無線基地局装置において、極力、高品質のデータから復号処理を実施することでシステムのスループットを向上させることができる。
請求項２及び請求項５に係る発明によれば、ＣＲＣ判定を実施する以前に、復号処理の途中である誤り訂正後の情報に従い、誤り訂正前の品質を測定し、品質の悪いものに対してＮＡＣＫの判断し、誤り訂正後の復号処理をスキップさせることにより、処理負荷の軽減が図れる。
請求項３及び請求項６に係る発明によれば、ユーザ毎の受信品質の測定結果により、上りの送信レートの指示を通知することにより、受信品質に応じた最適な上りのレート制御が可能となる。 According to the inventions according to claims 1 and 4, in the radio base station apparatus, it is possible to improve the system throughput by performing decoding processing from high-quality data as much as possible.
According to the inventions according to claim 2 and claim 5, before performing the CRC determination, the quality before error correction is measured according to the information after error correction in the middle of the decoding process, and the quality is poor. By determining NACK and skipping the decoding process after error correction, the processing load can be reduced.
According to the third and sixth aspects of the invention, it is possible to perform optimum uplink rate control in accordance with the reception quality by notifying the instruction of the uplink transmission rate based on the measurement result of the reception quality for each user. Become.

次に、本発明の実施例を図面に基づいて詳細に説明する。   Next, embodiments of the present invention will be described in detail with reference to the drawings.

図１にネットワークシステム概要図を示し、同図は無線基地局装置１から見て、その配下にServing Cellとして無線端末１１・１２が在圏し、無線基地局装置２の配下の無線端末１３はNon-Serving Cellとなっていることを表している。   FIG. 1 shows a schematic diagram of a network system. In FIG. 1, when viewed from the radio base station apparatus 1, radio terminals 11 and 12 are serving as serving cells, and radio terminals 13 subordinate to the radio base station apparatus 2 are This indicates that it is a non-serving cell.

図２に、本発明の実施例１のブロック図を示す。
本発明における無線基地局装置１は、次のような処理部を有している。
無線端末からの上り受信信号のＥ−ＤＰＤＣＨ（Dedicated Physical Data Channel for EUDCH）について、逆拡散、Ｒａｋｅ合成等を実施するＥ−ＤＰＤＣＨ逆拡散部１０１。
同じくＥ−ＤＰＣＣＨ（Dedicated Physical Control Channel for EUDCH）について実施するＥ−ＤＰＣＣＨ逆拡散部１０２。
同じくＤＰＣＨ（Dedicated Physical Channel）について実施するＤＰＣＨ逆拡散部１０３。
Ｅ−ＤＰＣＣＨを復号しＥ−ＴＦＣＩ（Transport Format Combination Indicator for EUDCH）、ＲＳＮ（Retransmission Sequence Number）、Ｈａｐｐｙ−ｂｉｔを判定するＥ−ＤＰＣＣＨ復号処理部１０５。
ＤＰＣＨ逆散処理部１０３からの情報に従い受信品質（例えば、ＳＩＲ（通信品質）やPysical Channel BER（Bit Error Ratio)）を測定する第１の受信品質測定部１０６。
Ｅ−ＤＰＣＣＨ復号処理部１０５から得られる情報及び第１の受信品質測定部１０６からの情報をもとに、復号するデータの優先度付けを行う優先度判定部１０４。
この優先度判定部１０４で決定した優先度に応じて割り当てられる複数のキューをもつ優先度キューを生成する優先度キュー生成部１０７。
優先度キューからデータを取り出して、レート・デマッチング（Rate-Dematching）処理までの復号処理を実施するＥ−ＤＰＣＨ復号処理部１０８。
このＥ−ＤＰＣＨ復号処理部１０８からの出力データに対して誤り訂正(Ｔｕｒｂｏ復号)を実施する誤り訂正処理部１０９。
この誤り訂正処理部１０９からの情報に従い、誤り訂正前の品質であるTransport Channel BERを測定する第２の受信品質測定部１１１。
誤り訂正後、ＣＲＣ（Cyclic Redundancy Check）判定までの復号処理を実施するＥ−ＤＣＨ復号処理部１１０。
第２の受信品質測定部１１１及びＥ−ＤＣＨ（Enhanced Dedicated Channel）復号処理部１１０の結果をもとに、無線端末に対するＡＣＫ／ＮＡＣＫの通知を判定するＡＣＫ／ＮＡＣＫ判定部１１２。
このＡＣＫ／ＮＡＣＫ判定部１１２の結果より、下りＥ−ＨＩＣＨ（E-DCH Hybrid ARQ Indicator Channel)信号を生成するＥ−ＨＩＣＨ生成部１１３。
第１の受信品質測定部１０６及び第２の受信品質測定部１１１の情報を用いて、上りＥ−ＤＰＤＣＨの送信電力を制御するためのＥ−ＲＧＣＨ（E-DCH Relative Grant Channel)の生成を実施するＥ−ＲＧＣＨ生成部１１４。 FIG. 2 shows a block diagram of the first embodiment of the present invention.
The radio base station apparatus 1 according to the present invention has the following processing unit.
An E-DPDCH despreading unit 101 that performs despreading, Rake combining, etc. on an E-DPDCH (Dedicated Physical Data Channel for EUDCH) of an uplink received signal from a wireless terminal.
An E-DPCCH despreading unit 102 that also performs E-DPCCH (Dedicated Physical Control Channel for EUDCH).
A DPCH despreading unit 103 that also performs DPCH (Dedicated Physical Channel).
An E-DPCCH decoding processing unit 105 that decodes E-DPCCH and determines E-TFCI (Transport Format Combination Indicator for EUDCH), RSN (Retransmission Sequence Number), and Happy-bit.
A first reception quality measurement unit 106 that measures reception quality (for example, SIR (communication quality) and physical channel BER (Bit Error Ratio)) in accordance with information from the DPCH inverse dispersion processing unit 103.
A priority determination unit 104 that prioritizes data to be decoded based on information obtained from the E-DPCCH decoding processing unit 105 and information from the first reception quality measurement unit 106.
A priority queue generation unit 107 that generates a priority queue having a plurality of queues assigned according to the priority determined by the priority determination unit 104.
An E-DPCH decoding processing unit 108 that extracts data from the priority queue and performs a decoding process up to a rate dematching process.
An error correction processing unit 109 that performs error correction (Turbo decoding) on the output data from the E-DPCH decoding processing unit 108.
A second reception quality measurement unit 111 that measures Transport Channel BER, which is quality before error correction, according to information from the error correction processing unit 109.
An E-DCH decoding processing unit 110 that performs decoding processing up to CRC (Cyclic Redundancy Check) determination after error correction.
An ACK / NACK determination unit 112 that determines ACK / NACK notification to the wireless terminal based on the results of the second reception quality measurement unit 111 and the E-DCH (Enhanced Dedicated Channel) decoding processing unit 110.
An E-HICH generation unit 113 that generates a downlink E-HICH (E-DCH Hybrid ARQ Indicator Channel) signal based on the result of the ACK / NACK determination unit 112.
Generation of E-RGCH (E-DCH Relative Grant Channel) for controlling uplink E-DPDCH transmission power using information of first reception quality measurement section 106 and second reception quality measurement section 111 E-RGCH generating unit 114 to perform.

次に、図２に示した実施例１の動作について図３及び図４を参照して以下に説明する。
図３において、無線基地局装置は、無線端末からＥ−ＤＰＤＣＨ／Ｅ−ＤＰＣＣＨを受信した場合（ステップＳ１）、Ｅ−ＤＰＤＣＨ逆拡散部１０１及びＥ−ＤＰＣＣＨ逆拡散部１０２にて、これらについて逆拡散、Ｒａｋｅ合成等を実施した後、Ｅ−ＤＰＣＣＨ復号処理部１０８でＥ−ＤＰＣＣＨを復号してこれからＥ−ＴＦＣＩ、ＲＳＮ（Retransmission Sequence Number）、Ｈａｐｐｙ−ｂｉｔの情報を取得し（ステップＳ２）、これを優先度判定部１０４に入力する（ステップＳ３）。また、同時に受信する上りＤＰＣＨの信号について、第１の受信品質測定部１０６で測定される受信品質情報(ＳＩＲ、Physicaln Channel BER)を取得し（ステップＳ４）、これを優先度判定部１０４に入力する（ステップＳ５）。 Next, the operation of the first embodiment shown in FIG. 2 will be described below with reference to FIGS.
In FIG. 3, when the radio base station apparatus receives E-DPDCH / E-DPCCH from a radio terminal (step S1), the E-DPDCH despreading unit 101 and the E-DPCCH despreading unit 102 reverse these. After performing spreading, Rake combining, etc., the E-DPCCH decoding processing unit 108 decodes the E-DPCCH, and acquires E-TFCI, RSN (Retransmission Sequence Number), and information of Happy-bit (step S2). This is input to the priority determination unit 104 (step S3). Also, reception quality information (SIR, Physicaln Channel BER) measured by the first reception quality measurement unit 106 is acquired for the uplink DPCH signal received at the same time (step S4), and this is input to the priority determination unit 104 (Step S5).

そして、優先度判定部１０４において、Ｅ−ＤＰＣＣＨを復号して得られた情報とＤＰＣＨの受信品質情報を用いて、予め決められた優先度づけのアルゴリズムにしたがって、高品質なデータの優先度を上げ、優先度に応じたキューに割り当てる（ステップＳ６）。Ｅ−ＤＰＤＣＨ復号処理部１０８では、優先度判定部１０４の情報にもとづき、優先度の高いキューに割り当てられたデータから順次復号処理を実施する（ステップＳ７）。優先度キューに一定時間以上滞留したデータに関しては、破棄されるものとする（ステップＳ８）。Ｅ−ＤＰＤＣＨ復号処理部１０８での処理が完了したら（ステップＳ９）、ＥＤＰＤＣＨ復号処理部１０８からのデータを誤り訂正処理部１０９にてＴｕｒｂｏ復号処理を実施する（ステップＳ１０）。   Then, the priority determination unit 104 uses the information obtained by decoding the E-DPCCH and the reception quality information of the DPCH to set the priority of high-quality data according to a predetermined prioritization algorithm. And assign it to the queue according to the priority (step S6). The E-DPDCH decoding processing unit 108 sequentially performs decoding processing from the data assigned to the queue with higher priority based on the information of the priority determination unit 104 (step S7). Data that stays in the priority queue for a predetermined time or more is discarded (step S8). When the processing in the E-DPDCH decoding processing unit 108 is completed (step S9), the data from the EDPDCH decoding processing unit 108 is subjected to Turbo decoding processing in the error correction processing unit 109 (step S10).

次に、誤り訂正結果から得られる情報を用いて第２の受信品質測定部１１１にてTransport Channel BER（T_BER)を測定する（ステップＳ１１）。
測定されたTransport Channel BER（T_BER)の品質を予め決められた閾値（Ｎ）と比較し（ステップＳ１２）、閾値（Ｎ）より悪い場合は、ＡＣＫ／ＮＡＣＫ判定部１１２にて、受信ＮＧと判断し（ステップＳ１３）、Ｅ−ＤＰＣＨ復号処理を実施せず、ＡＣＫ／ＮＡＣＫ判定部１１２からＥ−ＨＩＣＨ生成部１１３を介して該当する端末にＮＡＣＫ信号を送信する（ステップＳ１４）。 Next, Transport Channel BER (T_BER) is measured by second reception quality measurement section 111 using information obtained from the error correction result (step S11).
The quality of the measured Transport Channel BER (T_BER) is compared with a predetermined threshold value (N) (step S12). If the quality is worse than the threshold value (N), the ACK / NACK determination unit 112 determines that the reception is NG. Then, the NACK signal is transmitted from the ACK / NACK determination unit 112 to the corresponding terminal via the E-HICH generation unit 113 without performing the E-DPCH decoding process (step S14).

一方、予め決められた閾値（Ｎ）以上の品質が確保されている場合は、ＡＣＫ／ＮＡＣＫ判定部１１２より処理継続の情報を取得し、Ｅ−ＤＣＨ復号処理部１１０でＥ−ＤＣＨ復号処理を実施する（ステップＳ１５）。Ｅ−ＤＣＨ復号処理にて得られるＣＲＣ判定結果をＡＣＫ／ＮＡＣＫ判定部１１２へ入力してその適否を判定し（ステップＳ１６）、ＣＲＣ−ＯＫの場合はＡＣＫと判断し（ステップＳ１７）、ＡＣＫを端末に通知する（ステップＳ１８）。ＣＲＣ−ＮＧの場合はＮＡＣＫを端末に通知する（ステップＳ１４）。   On the other hand, if the quality equal to or higher than a predetermined threshold (N) is secured, the continuation information is acquired from the ACK / NACK determination unit 112 and the E-DCH decoding processing unit 110 performs the E-DCH decoding processing. Implement (step S15). The CRC determination result obtained in the E-DCH decoding process is input to the ACK / NACK determination unit 112 to determine its suitability (step S16). In the case of CRC-OK, it is determined as ACK (step S17). The terminal is notified (step S18). In the case of CRC-NG, NACK is notified to the terminal (step S14).

また、図４において、第１の受信品質測定部１０６及び第２の受信測定測定部１１１で測定された品質情報をもとに受信品質（Ｑ）を計測し（ステップＳ２１）、受信品質（Ｑ）が予め決められた閾値（Ｍ１）未満であるか否か判断し（ステップＳ２２）、受信品質（Ｑ）がある一定期間（ｔｍ１）以上予め決められた閾値（Ｍ１）を下回った場合（ステップＳ２３）は、Ｅ−ＲＧＣＨ生成部１１４を介して、該当する端末に対して送信レートを下げるように指示する（ステップＳ２４）。   In FIG. 4, the reception quality (Q) is measured based on the quality information measured by the first reception quality measurement unit 106 and the second reception measurement measurement unit 111 (step S21), and the reception quality (Q ) Is less than a predetermined threshold (M1) (step S22), and the reception quality (Q) falls below a predetermined threshold (M1) for a certain period (tm1) (step S22). In step S23, the corresponding terminal is instructed to lower the transmission rate via the E-RGCH generation unit 114 (step S24).

さらに、受信品質（Ｑ）が予め決められた閾値（Ｍ２）を越えているか否か判断し（ステップＳ２５）、受信品質（Ｑ）が一定期間（ｔｍ２）以上予め決められた閾値（Ｍ２）を上回った場合（ステップＳ２６）は、Ｅ−ＲＧＣＨ生成部１１４を介して、該当する端末に対して送信レートを上げるように指示する（ステップＳ２７）。   Further, it is determined whether or not the reception quality (Q) exceeds a predetermined threshold (M2) (step S25), and the reception quality (Q) is set to a predetermined threshold (M2) for a certain period (tm2) or more. When it exceeds (step S26), it instructs the corresponding terminal to increase the transmission rate via the E-RGCH generation unit 114 (step S27).

このようにして無線基地局装置１は、Ｅ−ＨＩＣＨ生成部１１３からのＥ−ＨＩＣＨ及びＥ−ＲＧＣＨ生成部１１２からのＥ−ＲＧＣＨを用いて、上りのレート制御及びスケジューリングを行う。   In this way, the radio base station apparatus 1 performs uplink rate control and scheduling using the E-HICH from the E-HICH generation unit 113 and the E-RGCH from the E-RGCH generation unit 112.

実施例２では、優先度判定部１にて用いる受信品質情報としてＥ−ＤＰＤＣＨ／Ｅ−ＤＰＣＣＨから測定される情報を用いる。
また、Ｅ−ＤＣＨ復号処理部１１０から得られるＣＲＣ判定結果をもとに、ある一定周期においてＢＬＥＲ（Block Error Rate）を測定し、ＢＬＥＲ測定結果も用いた上りの送信レート制御を実施する。 In the second embodiment, information measured from the E-DPDCH / E-DPCCH is used as reception quality information used in the priority determination unit 1.
Also, based on the CRC determination result obtained from the E-DCH decoding processing unit 110, BLER (Block Error Rate) is measured in a certain period, and uplink transmission rate control using the BLER measurement result is also performed.

ネットワークシステム概要図である。It is a network system schematic diagram. 無線基地局装置における本発明の実施例１のブロック図である。It is a block diagram of Example 1 of the present invention in a radio base station apparatus. その動作のフローチャートである。It is a flowchart of the operation. 図３から続く動作のフローチャートである。It is a flowchart of the operation | movement which continues from FIG.

符号の説明Explanation of symbols

１・２ 無線基地局装置
１１・１２・１３ 無線端末
１０１ Ｅ−ＤＰＤＣＨ逆拡散部
１０２ Ｅ−ＤＰＣＣＨ逆拡散部
１０３ ＤＰＣＨ逆拡散部
１０４ 優先度判定部
１０５ Ｅ−ＤＰＣＣＨ復号処理部
１０６ 第１の受信品質測定部
１０７ 優先度キュー生成部
１０８ Ｅ−ＤＰＣＨ復号処理部
１０９ 誤り訂正処理部
１１０ Ｅ−ＤＣＨ復号処理部
１１１ 第２の受信品質測定部
１１２ ＡＣＫ／ＮＡＣＫ判定部
１１３ Ｅ−ＨＩＣＨ生成部
１１４ Ｅ−ＲＧＣＨ生成部 1. 2 Radio base station apparatus 11, 12, 13 Radio terminal 101 E-DPDCH despreading unit 102 E-DPCCH despreading unit 103 DPCH despreading unit 104 Priority determining unit 105 E-DPCCH decoding processing unit 106 First reception Quality measurement unit 107 Priority queue generation unit 108 E-DPCH decoding processing unit 109 Error correction processing unit 110 E-DCH decoding processing unit 111 Second reception quality measurement unit 112 ACK / NACK determination unit 113 E-HICH generation unit 114 E -RGCH generator

Claims (6)

無線端末からの上り受信信号のＥ−ＤＰＤＣＨ、Ｅ−ＤＰＣＣＨ及びＤＰＣＨについて、少なくともそれぞれの逆拡散処理を行うＥ−ＤＰＤＣＨ逆拡散部、Ｅ−ＤＰＣＣＨ逆拡散部及びＤＰＣＨ逆拡散部を備えたＷ−ＣＤＭＡ方式の無線基地局装置におけるスケジューリング方法であって、前記ＤＰＣＨ逆散処理部からの情報に従い受信品質を測定する第１の受信品質測定ステップと、その受信品質測定情報及び前記Ｅ−ＤＰＣＣＨ復号処理部から得られる情報をもとに、復号するデータの優先度付けを行う優先度判定ステップと、決定した優先度に応じてデータが割り当てられる複数のキューをもつ優先度キューを生成する優先度キュー生成ステップと、その優先度キューから優先度に基づいてデータを取り出して、レート・デマッチング処理までの復号処理を実施するＥ−ＤＰＣＨ復号処理ステップとを有することを特徴とする無線基地局装置におけるスケジューリング方法。 W-equipped with an E-DPDCH despreading unit, an E-DPCCH despreading unit, and a DPCH despreading unit that perform at least the respective despreading processes on the E-DPDCH, E-DPCCH, and DPCH of the uplink received signal from the wireless terminal A scheduling method in a CDMA radio base station apparatus, comprising: a first reception quality measurement step for measuring reception quality according to information from the DPCH despreading processing unit; the reception quality measurement information; and the E-DPCCH decoding process A priority determination step for prioritizing data to be decoded based on information obtained from the unit, and a priority queue for generating a priority queue having a plurality of queues to which data is assigned according to the determined priority a generation step retrieves the data based on the priority from the priority queue, rate de-matching Scheduling method in a radio base station apparatus characterized by having a E-DPCH decoding process step of performing the decoding process to the management. さらに、Ｅ−ＤＰＣＨ復号処理の出力データに対して誤り訂正を実施する誤り訂正処理ステップと、この誤り訂正処理後の情報に従い、誤り訂正前の品質であるTransport Channel BERを測定する第２の受信品質測定ステップと、誤り訂正後、ＣＲＣ判定までの復号処理を実施するＥ−ＤＣＨ復号処理ステップと、そのＥ−ＤＣＨ復号処理の結果及び前記第２の受信品質測定結果をもとに、無線端末に対するＡＣＫ／ＮＡＣＫの通知を判定するＡＣＫ／ＮＡＣＫ判定ステップとを有することを特徴とする請求項１に記載の無線基地局装置におけるスケジューリング方法。   Further, an error correction processing step for performing error correction on the output data of the E-DPCH decoding process, and a second reception for measuring Transport Channel BER, which is the quality before error correction, according to the information after the error correction process A wireless terminal based on a quality measurement step, an E-DCH decoding processing step for performing decoding processing up to CRC determination after error correction, a result of the E-DCH decoding processing, and the second reception quality measurement result 2. The scheduling method in the radio base station apparatus according to claim 1, further comprising: an ACK / NACK determination step of determining an ACK / NACK notification for. 無線端末からの上り受信信号のＥ−ＤＰＤＣＨ、Ｅ−ＤＰＣＣＨ及びＤＰＣＨについて、少なくともそれぞれの逆拡散処理を行うＥ−ＤＰＤＣＨ逆拡散部、Ｅ−ＤＰＣＣＨ逆拡散部及びＤＰＣＨ逆拡散部を備えたＷ−ＣＤＭＡ方式の無線基地局装置における上りレート制御方法であって、前記ＤＰＣＨ逆散処理部からの情報に従い受信品質を測定する第１の受信品質測定ステップと、その受信品質測定情報及び前記Ｅ−ＤＰＣＣＨ復号処理部から得られる情報をもとに、復号するデータの優先度付けを行う優先度判定ステップと、決定した優先度に応じてデータが割り当てられる複数のキューをもつ優先度キューを生成する優先度キュー生成ステップと、その優先度キューから優先度に基づいてデータを取り出して、レート・デマッチング処理までの復号処理を実施するＥ−ＤＰＣＨ復号処理ステップと、そのＥ−ＤＰＣＨ復号処理の出力データに対して誤り訂正を実施する誤り訂正処理ステップと、この誤り訂正処理後の情報に従い、誤り訂正前の品質であるTransport Channel BERを測定する第２の受信品質測定ステップと、誤り訂正後、ＣＲＣ判定までの復号処理を実施するＥ−ＤＣＨ復号処理ステップと、そのＥ−ＤＣＨ復号処理の結果及び前記第２の受信品質測定結果をもとに、無線端末に対する通知を判定するＡＣＫ／ＮＡＣＫ判定ステップと、そのＡＣＫ／ＮＡＣＫ判定の結果より、下りＥ−ＨＩＣＨ信号を生成するＥ−ＨＩＣＨ生成ステップと、前記第１の受信品質測定の情報及び前記第２の受信品質測定の情報を用いて、上りＥ−ＤＰＤＣＨの送信電力を制御するためのＥ−ＲＧＣＨの生成を実施するＥ−ＲＧＣＨ生成ステップとを有することを特徴とする無線基地局装置における上りレート制御方法。 W-equipped with an E-DPDCH despreading unit, an E-DPCCH despreading unit, and a DPCH despreading unit that perform at least the respective despreading processes on the E-DPDCH, E-DPCCH, and DPCH of the uplink received signal from the wireless terminal An uplink rate control method in a CDMA radio base station apparatus, comprising: a first reception quality measurement step for measuring reception quality according to information from the DPCH despreading processing unit; the reception quality measurement information; and the E-DPCCH A priority determination step for prioritizing data to be decoded based on information obtained from the decoding processing unit, and a priority for generating a priority queue having a plurality of queues to which data is assigned according to the determined priority a degree queue generating step retrieves the data based on the priority from the priority queue, the rate de-matching processing E-DPCH decoding processing step for performing the decoding processing up to, an error correction processing step for performing error correction on the output data of the E-DPCH decoding processing, and before error correction according to the information after the error correction processing A second reception quality measurement step for measuring Transport Channel BER, which is the quality of the E.D., an E-DCH decoding processing step for performing decoding processing up to CRC determination after error correction, the result of the E-DCH decoding processing, and the aforementioned Based on the second reception quality measurement result, an ACK / NACK determination step for determining notification to the wireless terminal, an E-HICH generation step for generating a downlink E-HICH signal based on the result of the ACK / NACK determination, Using the information on the first reception quality measurement and the information on the second reception quality measurement, for controlling the transmission power of the uplink E-DPDCH Uplink rate control method in the radio base station apparatus characterized by comprising a E-RGCH generating step of carrying out the production of -RGCH. 無線端末からの上り受信信号のＥ−ＤＰＤＣＨ、Ｅ−ＤＰＣＣＨ及びＤＰＣＨについて、少なくともそれぞれの逆拡散処理を行うＥ−ＤＰＤＣＨ逆拡散部、Ｅ−ＤＰＣＣＨ逆拡散部及びＤＰＣＨ逆拡散部を備えたＷ−ＣＤＭＡ方式の無線基地局装置において、前記ＤＰＣＨ逆散処理部からの情報に従い受信品質を測定する第１の受信品質測定部と、その受信品質測定情報及び前記Ｅ−ＤＰＣＣＨ復号処理部から得られる情報をもとに、復号するデータの優先度付けを行う優先度判定部と、決定した優先度に応じてデータが割り当てられる複数のキューをもつ優先度キューを生成する優先度キュー生成部と、その優先度キューから優先度に基づいてデータを取り出して、レート・デマッチング処理までの復号処理を実施するＥ−ＤＰＣＨ復号処理部とを有することを特徴とする無線基地局装置。 W-equipped with an E-DPDCH despreading unit, an E-DPCCH despreading unit, and a DPCH despreading unit that perform at least the respective despreading processes on the E-DPDCH, E-DPCCH, and DPCH of the uplink received signal from the wireless terminal In a CDMA radio base station apparatus, a first reception quality measurement unit that measures reception quality according to information from the DPCH despreading processing unit, the reception quality measurement information, and information obtained from the E-DPCCH decoding processing unit A priority determination unit that prioritizes data to be decoded, a priority queue generation unit that generates a priority queue having a plurality of queues to which data is assigned according to the determined priority, and retrieves the data based from the priority queue in priority, E-DPCH decoding processing for carrying out the decoding process until the rate de-matching process The radio base station apparatus characterized by having a part. さらに、Ｅ−ＤＰＣＨ復号処理の出力データに対して誤り訂正を実施する誤り訂正処理部と、この誤り訂正処理後の情報に従い、誤り訂正前の品質であるTransport Channel BERを測定する第２の受信品質測定部と、誤り訂正後、ＣＲＣ判定までの復号処理を実施するＥ−ＤＣＨ復号処理部と、そのＥ−ＤＣＨ復号処理の結果及び前記第２の受信品質測定結果をもとに、無線端末に対するＡＣＫ／ＮＡＣＫの通知を判定するＡＣＫ／ＮＡＣＫ判定部とを有することを特徴とする請求項４に記載の無線基地局装置   Furthermore, an error correction processing unit that performs error correction on the output data of the E-DPCH decoding process, and a second reception that measures Transport Channel BER, which is the quality before error correction, according to the information after the error correction process Based on the quality measurement unit, the E-DCH decoding processing unit that performs decoding processing up to CRC determination after error correction, the wireless terminal based on the result of the E-DCH decoding processing and the second reception quality measurement result The radio base station apparatus according to claim 4, further comprising: an ACK / NACK determination unit that determines an ACK / NACK notification for さらに、ＡＣＫ／ＮＡＣＫ判定の結果より、下りＥ−ＨＩＣＨ信号を生成するＥ−ＨＩＣＨ生成部と、第１の受信品質測定の情報及び第２の受信品質測定の情報を用いて、上りＥ−ＤＰＤＣＨの送信電力を制御するためのＥ−ＲＧＣＨの生成を実施するＥ−ＲＧＣＨ生成部とを有することを特徴とする請求項５に記載の無線基地局装置。   Further, based on the result of the ACK / NACK determination, the E-HICH generation unit that generates the downlink E-HICH signal, the first reception quality measurement information, and the second reception quality measurement information are used to obtain the uplink E-DPDCH. The radio base station apparatus according to claim 5, further comprising: an E-RGCH generation unit that generates an E-RGCH for controlling transmission power of the E-RGCH.
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