JP3120836B2 - CODEC1 link control method and CODEC1 link connection control base station - Google Patents
CODEC1 link control method and CODEC1 link connection control base stationInfo
- Publication number
- JP3120836B2 JP3120836B2 JP32733197A JP32733197A JP3120836B2 JP 3120836 B2 JP3120836 B2 JP 3120836B2 JP 32733197 A JP32733197 A JP 32733197A JP 32733197 A JP32733197 A JP 32733197A JP 3120836 B2 JP3120836 B2 JP 3120836B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- base station
- efficiency
- codec1
- link connection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Mobile Radio Communication Systems (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明はディジタル移動通信
システムで利用される変復調装置及び音声処理装置の接
続制御方式に関し、特に移動機- 移動機で通信する場合
（１リンクと称する）の接続制御方式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection control system for a modulation / demodulation device and a voice processing device used in a digital mobile communication system, and more particularly to a connection control system for communication between mobile stations (called one link). About.
【０００２】[0002]
【従来の技術】ディジタル移動通信方式では音声をディ
ジタル信号に変換して伝送する必要があるが、網と無線
区間では異なる符号化を行っている。2. Description of the Related Art In a digital mobile communication system, it is necessary to convert voice into a digital signal for transmission, but different coding is performed in a network and a wireless section.
【０００３】網側では音声を６４ｋｂｐｓのＰＣＭ（Ｐ
ｕｌｓｅ Ｃｏｄｅ Ｍｏｄｕｌａｔｉｏｎ）信号に変
換している。一方、無線区間では無線周波数を有効に利
用するため、ＰＣＭ信号を高能率符号化音声信号に変換
している。日本のＰＤＣ（Ｐｅｒｓｏｎａｌ Ｄｉｇｉ
ｔａｌ Ｃｅｌｌｕｌａｒ）では、高能率符号化音声信
号としてＶＳＥＬＰ信号（１１．２ｋｂｐｓ）を用いて
いる。高能率符号化では音質をあまり損なうことなく音
声符号化速度を低速にすると共に、伝送路符号誤りに対
する強力な誤り保護を施している。[0003] On the network side, voice is transmitted in 64 kbps PCM (P
ulse code modulation (ulse code modulation) signal. On the other hand, in a wireless section, a PCM signal is converted into a highly efficient coded voice signal in order to effectively use a radio frequency. Japanese PDC (Personal Digi)
tal Cellular) uses a VSELP signal (11.2 kbps) as a highly efficient encoded speech signal. In the high-efficiency coding, the voice coding speed is reduced without significantly deteriorating the sound quality, and strong error protection against transmission line code errors is performed.
【０００４】移動機−移動機で通話する場合、高能率音
声符号化を２回行うことによる音声品質劣化及び遅延量
の増加を防ぐ為、網内で高能率符号化音声信号のまま転
送（スルー接続）することにより、ＣＯＤＥＣ１リンク
接続を実現し、音声品質の劣化を抑えている。[0004] In a mobile unit-to-mobile unit communication, in order to prevent deterioration of voice quality and increase in delay due to performing high-efficiency voice coding twice, a high-efficiency coded voice signal is transferred as it is in a network (through). Connection), a CODEC1 link connection is realized, and deterioration of voice quality is suppressed.
【０００５】従来のＣＯＤＥＣ１リンク接続制御方式を
図２を参照して説明する。[0005] A conventional CODEC1 link connection control system will be described with reference to FIG.
【０００６】移動機１１０は音声信号を高能率符復号処
理部１１１で高能率音声符号化及び誤り訂正符号化を行
って高能率符号化音声信号１１２を出力する。この高能
率符号化音声信号１１２に対して変復調処理部１１３で
変調処理が行われ、無線信号１１４に変換されてアンテ
ナ１１５から送信される。The mobile unit 110 performs high-efficiency voice coding and error correction coding on the voice signal in the high-efficiency codec 111 and outputs a high-efficiency coded voice signal 112. The modulation / demodulation processing unit 113 performs modulation processing on the high-efficiency coded audio signal 112, converts the signal into a radio signal 114, and transmits the signal from the antenna 115.
【０００７】変復調装置及び音声処理装置１２０はアン
テナ１２１から受信した無線信号１２２を変復調処理部
１２３で復調し高能率符号化音声信号１２４を出力す
る。高能率復号処理部１２５は高能率音声復号化及び誤
り訂正復号化を行いＰＣＭ信号１２６を出力する。[0007] A modulation / demodulation device and a voice processing device 120 demodulate a radio signal 122 received from an antenna 121 by a modulation / demodulation processing unit 123 and output a highly efficient coded voice signal 124. The high-efficiency decoding unit 125 performs high-efficiency speech decoding and error correction decoding, and outputs a PCM signal 126.
【０００８】回線制御部１２７は移動機−移動機と移動
機−網のどちらの通信が行われているかを検出し制御信
号１２８を出力する。The line control unit 127 detects whether communication is performed between the mobile unit and the mobile unit or between the mobile unit and the network, and outputs a control signal 128.
【０００９】制御信号１２８が示す回線制御部１２７の
検出結果を元に、切替部１２９は高能率符号化音声信号
１２４とＰＣＭ信号１２６のいずれか一方を音声伝送信
号１３０として出力する。移動機−移動機の通信の場合
は高能率符号化音声信号１２４をスルーで、移動機−網
の通信の場合はＰＣＭ信号１２６を選択して音声伝送信
号１３０を生成する。生成された音声伝送信号１３０は
移動通信交換機１４０を経由して固定網１５０に送られ
る。The switching unit 129 outputs one of the high-efficiency coded voice signal 124 and the PCM signal 126 as a voice transmission signal 130 based on the detection result of the line control unit 127 indicated by the control signal 128. In the case of mobile-to-mobile communication, the high-efficiency coded voice signal 124 is passed through. In the case of mobile-to-network communication, the PCM signal 126 is selected to generate the voice transmission signal 130. The generated voice transmission signal 130 is sent to the fixed network 150 via the mobile communication switch 140.
【００１０】固定網１５０からの下り信号である音声伝
送信号１７１は移動通信交換機１６０を経由して変復調
装置及び音声処理装置１７０に入力される。[0010] A voice transmission signal 171, which is a downstream signal from the fixed network 150, is input to the modem and voice processing device 170 via the mobile communication switch 160.
【００１１】音声伝送信号１７１は高能率符号処理部１
７２で高能率音声符号化及び誤り訂正符号化が行われ
る。音声伝送信号１７１がＰＣＭ信号の場合は高能率符
号化音声信号１７３に変換される。The voice transmission signal 171 is transmitted to the high-efficiency code processor 1
At 72, highly efficient speech coding and error correction coding are performed. When the audio transmission signal 171 is a PCM signal, it is converted into a high-efficiency encoded audio signal 173.
【００１２】切替部１７４は制御信号１７５が移動機-
移動機の通信なら音声伝送信号１７１すなわち高能率符
号音声信号をスルーで、移動機- 網の通信なら高能率符
号化音声信号１７３を選択し、高能率符号化音声信号１
７６として出力する。The switching unit 174 outputs a control signal 175 to the mobile unit.
In the case of mobile station communication, the voice transmission signal 171, that is, the high efficiency coded voice signal is passed through. In the case of mobile station network communication, the high efficiency coded voice signal 173 is selected, and the high efficiency coded voice signal 1 is selected.
Output as 76.
【００１３】変復調処理部１７７は高能率符号化音声信
号１７６を変調して無線信号１７８に変換した後アンテ
ナ１７９から移動機１８０へ送信する。[0013] A modulation / demodulation processing section 177 modulates the high-efficiency coded voice signal 176 to convert it into a radio signal 178, and then transmits the radio signal 178 to the mobile device 180 from the antenna 179.
【００１４】移動機１８０はアンテナ１８１から受信し
た無線信号１８２を変復調処理部１８３で復調処理し高
能率符号化音声信号１８４に変換し、高能率符復号処理
部１８５で音声信号に変換する。The mobile unit 180 demodulates the radio signal 182 received from the antenna 181 by the modulation / demodulation processing unit 183, converts the radio signal 182 into a high-efficiency encoded speech signal 184, and converts the radio signal 182 into a high-efficiency codec processing unit 185 into a speech signal.
【００１５】[0015]
【発明が解決しようとする課題】上述した従来のＣＯＤ
ＥＣ１リンク接続制御方式によると、高能率音声符号化
復号化を２回行うことによる音声品質劣化・ データ遅延
を防ぐ為、網側では高能率符号化音声信号がスルーで伝
送される。The conventional COD described above.
According to the EC1 link connection control method, a high-efficiency coded voice signal is transmitted through the network side in order to prevent voice quality deterioration and data delay caused by performing high-efficiency voice coding / decoding twice.
【００１６】しかし、無線区間での誤り訂正が上りと下
りで一括して行われることになり、結果として伝送誤り
に対する誤り訂正能力が低下し音声品質が劣化するとい
う問題点がある。However, error correction in the radio section is performed collectively for uplink and downlink, and as a result, there is a problem in that error correction capability for transmission errors is reduced and voice quality is deteriorated.
【００１７】本発明が解決しようとする課題は、高能率
音声符号化による音質劣化と伝送誤りによる音質劣化と
いう従来のＣＯＤＥＣ１リンク接続制御方式では相反す
る音質劣化を最適なポイントで常に制御することであ
る。The problem to be solved by the present invention is to always control the contradictory sound quality degradation at an optimum point in the conventional CODEC1 link connection control system, in which sound quality degradation due to high-efficiency speech coding and sound quality degradation due to transmission errors occur. is there.
【００１８】[0018]
【課題を解決するための手段】上述の課題を解決するた
め、本発明のＣＯＤＥＣ１リンク接続制御方式は上りの
無線区間の受信信号の品質によって高能率音声符号化処
理の有無を切り替える。In order to solve the above-mentioned problems, the CODEC1 link connection control system of the present invention switches the presence / absence of high-efficiency speech coding processing depending on the quality of a received signal in an uplink radio section.
【００１９】上りの無線区間の受信信号の品質が良いと
きには高能率音声符号化・復号化による音質劣化が支配
的になるので、高能率音声符号化・復号化は行わず受信
信号をスルーで伝送する。When the quality of the received signal in the uplink radio section is good, the deterioration of the sound quality due to the high-efficiency speech coding / decoding becomes dominant, so the received signal is transmitted through without performing the high-efficiency speech coding / decoding. I do.
【００２０】上りの無線区間の受信信号の品質が悪いと
きには伝送路誤りによる音質劣化が支配的になるので、
高能率音声復号化・ 誤り訂正を行ったＰＣＭ信号を伝送
する。When the quality of the received signal in the uplink radio section is poor, sound quality deterioration due to transmission path errors becomes dominant.
Transmits PCM signal after high-efficiency speech decoding and error correction.
【００２１】以上より、相反する高能率音声符号化によ
る音質劣化と伝送誤りによる音質劣化を最適なポイント
で常に制御することが可能となる。As described above, it is possible to always control sound quality deterioration due to conflicting high-efficiency speech coding and sound quality deterioration due to transmission errors at optimal points.
【００２２】[0022]
【発明の実施の形態】次に本発明のＣＯＤＥＣ１リンク
接続制御方式について図面を参照して説明する。図１は
本発明の一実施の形態である移動機、変復調装置、音声
処理装置、移動通信交換機及び固定網の構成を示す図で
ある。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a CODEC1 link connection control system of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a configuration of a mobile station, a modem, a voice processing apparatus, a mobile communication exchange, and a fixed network according to an embodiment of the present invention.
【００２３】移動機１０は音声信号を高能率符復号処理
部１１で高能率音声符号化及び誤り訂正符号化を行って
高能率符号化音声信号１２を出力する。高能率符号化音
声信号１２は変復調処理部１３で変調処理が行われ無線
信号１４に変換されてアンテナ１５から送信される。The mobile station 10 performs high-efficiency voice coding and error correction coding on the voice signal in the high-efficiency codec processing section 11, and outputs a high-efficiency coded voice signal 12. The high-efficiency coded audio signal 12 is subjected to modulation processing in a modulation / demodulation processing unit 13, converted into a radio signal 14, and transmitted from an antenna 15.
【００２４】変復調装置及び音声処理装置２０はアンテ
ナ２１で受信した無線信号２２を変復調処理部２３に送
る。変復調処理部２３は無線信号２２を復調して高能率
符号化音声信号２４を出力すると共に無線信号２２の信
頼度情報２５を出力する。The modulation / demodulation device and the audio processing device 20 send the radio signal 22 received by the antenna 21 to the modulation / demodulation processing unit 23. The modulation / demodulation processing unit 23 demodulates the radio signal 22 to output a highly efficient encoded voice signal 24 and outputs reliability information 25 of the radio signal 22.
【００２５】高能率符号化音声信号２４は一方では高能
率復号処理部２６により高能率音声復号化及び誤り訂正
復号化をされてＰＣＭ信号２７として切替部２８に入力
される。また一方では復号化処理を受けないでそのまま
切替部２８に入力される。On the other hand, the high-efficiency coded speech signal 24 is subjected to high-efficiency speech decoding and error correction decoding by the high-efficiency decoding processing unit 26, and is input to the switching unit 28 as a PCM signal 27. On the other hand, the data is directly input to the switching unit 28 without undergoing the decoding process.
【００２６】信頼度情報２５は回線品質検出部２９に入
力される。回線品質検出部２９は信頼度情報２５から上
り信号の品質の良否を検出し回線品質検出結果３０を出
力する。The reliability information 25 is input to the line quality detector 29. The line quality detector 29 detects whether the quality of the uplink signal is good or not from the reliability information 25 and outputs a line quality detection result 30.
【００２７】上り信号の品質が良いことを回線品質検出
結果３０が示している場合、切替部２８は高能率符号化
音声信号２４をスルー接続して音声伝送信号３１を生成
する。これに対して、上り信号の品質が悪いことを回線
品質検出結果３０が示している場合、切替部２８はＰＣ
Ｍ信号２７を選択して音声伝送信号３１を生成する。生
成された音声伝送信号３１は回線品質検出結果３０と共
に移動通信交換機４０を経由して固定網５０に送られ
る。When the line quality detection result 30 indicates that the quality of the uplink signal is good, the switching unit 28 connects the high-efficiency coded audio signal 24 through to generate an audio transmission signal 31. On the other hand, if the line quality detection result 30 indicates that the quality of the uplink signal is poor, the switching unit 28
The audio signal 31 is generated by selecting the M signal 27. The generated voice transmission signal 31 is sent to the fixed network 50 via the mobile communication switch 40 together with the line quality detection result 30.
【００２８】固定網５０からの下り信号は移動通信交換
機６０を経由して変復調装置及び音声処理装置７０に入
力される。Downlink signals from the fixed network 50 are input to the modem and voice processing unit 70 via the mobile communication exchange 60.
【００２９】音声伝送信号７１は高能率符号処理部７２
で高能率音声符号化及び誤り訂正符号化が行われ音声伝
送信号７１がＰＣＭ信号の場合は高能率符号化音声信号
７３に変換される。The voice transmission signal 71 is transmitted to a high-efficiency code processor 72.
The high efficiency voice coding and the error correction coding are performed in the case where the voice transmission signal 71 is a PCM signal, and is converted into the high efficiency coding voice signal 73.
【００３０】上り信号の品質が良いことを回線品質検出
結果７４が示している場合、切替部７５は音声伝送信号
７１すなわち高能率符号音声信号をスルーする。これに
対して品質が悪いことを示している場合、切替部７５は
高能率符号化音声信号７３を選択し出力する。When the line quality detection result 74 indicates that the quality of the uplink signal is good, the switching unit 75 passes the voice transmission signal 71, that is, the high-efficiency code voice signal. On the other hand, when it indicates that the quality is poor, the switching unit 75 selects and outputs the high-efficiency coded audio signal 73.
【００３１】高能率符号化音声信号７６は変復調処理部
７７で無線信号７８に変換されアンテナ７９から送信さ
れる。The high-efficiency coded audio signal 76 is converted into a radio signal 78 by a modulation / demodulation processing unit 77 and transmitted from an antenna 79.
【００３２】移動機８０はアンテナ８１から受信した無
線信号８２を変復調処理部８３で復調処理し高能率符号
化音声信号８４に変換した後、高能率符復号処理部８５
で音声信号に変換する。The mobile unit 80 demodulates the radio signal 82 received from the antenna 81 by the modulation / demodulation processing unit 83 and converts it into a high-efficiency coded audio signal 84, and then converts it to a high-efficiency codec 85
To convert to an audio signal.
【００３３】以上説明したように、上りの無線区間の受
信信号の品質が良いときには高能率符号化信号をスルー
で、品質が悪いときには高能率符号化処理を行ったＰＣ
Ｍ信号を伝送することによって、高能率音声符号化によ
る音質劣化と伝送路誤りによる音質劣化という相反する
音質劣化を最適なポイントで常に制御が可能になり、最
適な音質で通話をすることができる。As described above, when the quality of the received signal in the uplink radio section is good, the high-efficiency coded signal is passed through.
By transmitting the M signal, it is possible to always control the contradictory sound quality degradation, that is, the sound quality degradation due to high-efficiency speech coding and the sound quality degradation due to a transmission path error, at an optimal point, thereby enabling a conversation with the optimal sound quality. .
【００３４】[0034]
【発明の効果】本発明のＣＯＤＥＣ１リンク接続制御方
式では、伝送路の伝送状態が良好で伝送路誤りによる音
質劣化がないときには、高能率符号化信号をスルーで伝
送し、伝走路の誤り訂正を１回しか行わないが、高能率
音声符号化復号化も１回しか行わない。よって伝送遅延
及び高能率音声符号化復号化による音質劣化を抑えるこ
とができる。According to the CODEC1 link connection control method of the present invention, when the transmission state of the transmission line is good and there is no sound quality deterioration due to the transmission line error, the high efficiency coded signal is transmitted through and the error correction of the transmission line is performed. Although it is performed only once, high-efficiency speech encoding / decoding is also performed only once. Therefore, it is possible to suppress sound quality deterioration due to transmission delay and high-efficiency speech coding / decoding.
【００３５】伝送状態が悪く伝送路誤りによる音質劣化
が大きいときには、高能率音声復号化処理を行ったＰＣ
Ｍ信号を伝送する。よって高能率音声符号化復号化は２
回行われるが、伝送路の誤り訂正も２回行われるので伝
走路で生じる伝送路誤りによる音質劣化を抑えることが
できる。When the transmission state is poor and the sound quality is largely degraded due to a transmission line error, the PC which has performed the high-efficiency speech decoding process
Transmit the M signal. Therefore, high efficiency speech coding / decoding is 2
However, since the error correction of the transmission path is also performed twice, it is possible to suppress the sound quality deterioration due to the transmission path error occurring on the transmission path.
【００３６】つまり、本発明のＣＯＤＥＣ１リンク接続
制御方式によれば常に最適な音質で通話をすることが可
能となる。That is, according to the CODEC1 link connection control system of the present invention, it is possible to always make a call with an optimum sound quality.
【００３７】以上、本発明を実施の形態に基づいて説明
したが、本発明はこれに限定されるものではなく、当業
者の通常の知識の範囲内でその変更や改良が可能である
ことは勿論である。Although the present invention has been described based on the embodiment, the present invention is not limited to this, and it is understood that changes and improvements can be made within the ordinary knowledge of those skilled in the art. Of course.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明のＣＯＤＥＣ１リンク接続制御方式のブ
ロック図である。FIG. 1 is a block diagram of a CODEC1 link connection control method of the present invention.
【図２】従来のＣＯＤＥＣ１リンク接続制御方式のブロ
ック図である。FIG. 2 is a block diagram of a conventional CODEC1 link connection control method.
１０、８０、１１０、１８０ 移動機 １１、８５、１１１、１８５ 高能率符復号処理部 １２、２４、７３、７６、８４、１１２、１２４、１７
３、１７６、１８４高能率符号化音声信号 １３、２３、７７、８３、１１３、１２３、１７７、１
８３ 変復調処理部 １４、２２、７８、８２、１１４、１２２、１７８、１
８２ 無線信号 １５、２１、７９、８１、１１５、１２１、１７９、１
８１ アンテナ ２０、７０、１２０、１７０ 変復調装置及び音声処
理装置 ２５ 信頼度情報 ２６、１２５ 高能率復号処理部 ２７、１２６ ＰＣＭ信号 ２８、７５、１２９、１７４ 切替部 ２９ 回線品質検出部 ３０、７４ 回線品質検出結果 ３１、７１、１３０、１７１ 音声伝送信号 ４０、６０、１４０、１６０ 移動通信交換機 ５０、１５０ 固定網 ７２、１７２ 高能率符号処理部 １２７ 回線制御部 １２８、１７５ 制御信号10, 80, 110, 180 Mobile device 11, 85, 111, 185 High-efficiency codec 12, 24, 73, 76, 84, 112, 124, 17
3, 176, 184 High-efficiency coded audio signal 13, 23, 77, 83, 113, 123, 177, 1
83 modulation / demodulation processing unit 14, 22, 78, 82, 114, 122, 178, 1
82 wireless signal 15, 21, 79, 81, 115, 121, 179, 1
81 antenna 20, 70, 120, 170 modem and audio processing unit 25 reliability information 26, 125 high-efficiency decoding processing unit 27, 126 PCM signal 28, 75, 129, 174 switching unit 29 line quality detection unit 30, 74 lines Quality detection result 31, 71, 130, 171 Voice transmission signal 40, 60, 140, 160 Mobile communication switch 50, 150 Fixed network 72, 172 High-efficiency code processor 127 Line controller 128, 175 Control signal
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H04B 7/24 - 7/26 H04Q 7/04 - 7/38 H04B 14/00 - 14/06 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) H04B 7/ 24-7/26 H04Q 7 /04-7/38 H04B 14/00-14/06
Claims (5)
符号化音声信号を変調した無線信号を用いるＣＯＤＥＣ
１リンク制御方法において、 第一の移動機から送信された上り無線信号を第一の基地
局が受信して高能率符号化音声信号に復調すると共に、
前記第一の基地局が前記上り無線信号の品質の良否を判
定する段階と、 前記上り無線信号の品質が良い場合、第一の基地局から
第二の基地局に高能率符号化音声信号を送信し、前記上
り無線信号の品質が悪い場合、第一の基地局から第二の
基地局にＰＣＭ信号を送信する段階と第二の基地局がＰ
ＣＭ信号を受信した場合、第二の基地局がＰＣＭ信号を
高能率符号化音声信号に符号化する段階と、 第二の基地局が高能率符号化音声信号を変調して無線信
号を第二の移動機に送信する段階とを含むことを特徴と
するＣＯＤＥＣ１リンク制御方法。1. A CODEC using a radio signal obtained by modulating a highly efficient encoded voice signal for transmission and reception between a mobile station and a base station.
In the one-link control method, the first base station receives an uplink radio signal transmitted from the first mobile station, demodulates the radio signal into a highly efficient encoded voice signal,
The first base station determines the quality of the uplink radio signal quality, if the quality of the uplink radio signal is good, from the first base station to the second base station high efficiency coded voice signal Transmitting the PCM signal from the first base station to the second base station when the quality of the uplink radio signal is poor,
When the CM signal is received, the second base station encodes the PCM signal into a high-efficiency coded voice signal, and the second base station modulates the high-efficiency coded voice signal to convert the radio signal into a second high-efficiency coded voice signal. Transmitting to the other mobile station.
て移動機と固定網を接続するＣＯＤＥＣ１リンク接続制
御基地局において、 移動機が伝送する上り無線信号の回線品質を検出し、回
線品質情報を出力する回線品質検出手段と、 前記上り無線信号を復調して上り高能率符号化音声信号
を出力する復調手段と、 前記上り高能率符号化音声信号を上りＰＣＭ信号に復号
化する高能率復号化手段と、 前記回線品質情報に基づいて、前記上り高能率符号化音
声信号及び前記上りＰＣＭ信号のいずれか一方を音声伝
送信号として該ＣＯＤＥＣ１リンク接続制御基地局の上
位網に伝送する切替手段とを備えることを特徴とするＣ
ＯＤＥＣ１リンク接続制御基地局。2. A CODEC1 link connection control base station for connecting a mobile station and a fixed network in accordance with a CODEC1 link connection control method, wherein the line quality of an uplink radio signal transmitted by the mobile station is detected and line quality information is output. Detecting means; demodulating means for demodulating the uplink radio signal to output an uplink high-efficiency coded audio signal; high-efficiency decoding means for decoding the uplink high-efficiency coded audio signal into an uplink PCM signal; Switching means for transmitting one of the uplink high-efficiency coded audio signal and the uplink PCM signal as an audio transmission signal to an upper network of the CODEC1 link connection control base station based on the channel quality information. C
ODEC1 link connection control base station.
制御基地局において、前記音声伝送信号と共に前記回線
品質情報を該ＣＯＤＥＣ１リンク接続制御基地局の上位
網に伝送することを特徴とするＣＯＤＥＣ１リンク接続
制御基地局。3. The CODEC1 link connection control base station according to claim 2, wherein said line quality information is transmitted together with said voice transmission signal to an upper network of said CODEC1 link connection control base station. base station.
て移動機と固定網を接続するＣＯＤＥＣ１リンク接続制
御基地局であって、上位網から伝送されたＰＣＭ信号を
下り高能率符号化音声信号に符号化する高能率符号化手
段を備えるＣＯＤＥＣ１リンク接続制御基地局におい
て、 高能率符号化音声信号及びＰＣＭ信号のいずれか一方と
共に上り無線信号の回線品質を表す回線品質情報を該Ｃ
ＯＤＥＣ１リンク接続制御基地局の上位網から受信し、 上位網から受信した高能率符号化音声信号及び前記高能
率符号化手段が前記ＰＣＭ信号を符号化した高能率符号
化音声信号のいずれか一方の高能率符号化音声信号を前
記回線品質情報に基づいて選択して出力する切替手段
と、 前記切替手段が出力した高能率符号化音声信号を下り無
線信号に変調する変調手段とを備えることを特徴とする
ＣＯＤＥＣ１リンク接続制御基地局。4. A method according to a CODEC1 link connection control method.
Link connection system for connecting mobile equipment and fixed network
A base station that transmits a PCM signal transmitted from a higher-level network.
High-efficiency coder that encodes downstream high-efficiency coded speech signals
CODEC1 link connection control base station with stage
The line quality information indicating the line quality of the uplink radio signal together with one of the high efficiency coded voice signal and the PCM signal is transmitted to the C
One of a high-efficiency coded audio signal received from the upper network of the ODEC1 link connection control base station and received from the upper network, and a high-efficiency coded audio signal obtained by encoding the PCM signal by the high-efficiency encoding means. Switching means for selecting and outputting a high-efficiency coded voice signal based on the line quality information; andmodulating means for modulating the high-efficiency coded voice signal output by the switching means into a downlink radio signal. CODEC1 link connection control base station.
て移動機と固定網を接続するＣＯＤＥＣ１リンク接続制
御基地局において、 移動機が伝送する上り無線信号の回線品質を検出し、回
線品質情報を出力する回線品質検出手段と、 前記上り無線信号を復調して上り高能率符号化音声信号
を出力する復調手段と、 前記上り高能率符号化音声信号を上りＰＣＭ信号に復号
化する高能率復号化手段と、 前記回線品質情報に基づいて、前記上り高能率符号化音
声信号及び前記上りＰＣＭ信号のいずれか一方を音声伝
送信号として該ＣＯＤＥＣ１リンク接続制御基地局の上
位網に伝送する第１の切替手段と、 上位網から伝送されたＰＣＭ信号を下り高能率符号化音
声信号に符号化する高能率符号化手段と、 上位網から受信した高能率符号化音声信号及び前記高能
率符号化手段が前記ＰＣＭ信号を符号化した高能率符号
化音声信号のいずれか一方の高能率符号化音声信号を該
ＣＯＤＥＣ１リンク接続制御基地局の上位網から伝送さ
れた前記回線品質情報に基づいて選択して出力する第２
の切替手段と、 前記第２の切替手段が出力した高能率符号化音声信号を
下り無線信号に変調する変調手段とを備えることを特徴
とするＣＯＤＥＣ１リンク接続制御基地局。5. A CODEC1 link connection control base station for connecting a mobile station and a fixed network in accordance with a CODEC1 link connection control method, wherein the line quality of an uplink radio signal transmitted by the mobile station is detected and line quality information is output. Detecting means; demodulating means for demodulating the uplink radio signal to output an uplink high-efficiency coded audio signal; high-efficiency decoding means for decoding the uplink high-efficiency coded audio signal into an uplink PCM signal; First switching means for transmitting one of the uplink high-efficiency coded audio signal and the uplink PCM signal as an audio transmission signal to an upper network of the CODEC1 link connection control base station based on the channel quality information; High efficiency coding means for coding a PCM signal transmitted from a network into a downstream high efficiency coded voice signal, and a high efficiency coded voice signal received from an upper network And the line quality transmitted from the higher-level network of the CODEC1 link connection control base station by transmitting one of the high-efficiency coded voice signals obtained by coding the PCM signal by the high-efficiency coding means. Second to select and output based on information
A CODEC1 link connection control base station, comprising: a switching unit, and a modulation unit that modulates the high-efficiency coded voice signal output by the second switching unit into a downlink radio signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32733197A JP3120836B2 (en) | 1997-11-28 | 1997-11-28 | CODEC1 link control method and CODEC1 link connection control base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32733197A JP3120836B2 (en) | 1997-11-28 | 1997-11-28 | CODEC1 link control method and CODEC1 link connection control base station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11164363A JPH11164363A (en) | 1999-06-18 |
| JP3120836B2 true JP3120836B2 (en) | 2000-12-25 |
Family
ID=18197953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32733197A Expired - Fee Related JP3120836B2 (en) | 1997-11-28 | 1997-11-28 | CODEC1 link control method and CODEC1 link connection control base station |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3120836B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4362261B2 (en) | 2002-01-17 | 2009-11-11 | 日本電気通信システム株式会社 | Speech code control method |
| JP2007043524A (en) * | 2005-08-04 | 2007-02-15 | Hitachi Kokusai Electric Inc | Communication station device |
| JP2009232419A (en) * | 2008-03-25 | 2009-10-08 | Oki Semiconductor Co Ltd | Radio communication device and its communication method |
-
1997
- 1997-11-28 JP JP32733197A patent/JP3120836B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11164363A (en) | 1999-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6172974B1 (en) | Network element having tandem free operation capabilities | |
| US6754265B1 (en) | VOCODER capable modulator/demodulator | |
| EP1061753B1 (en) | Audio transcoder mode switching depending on the input signal characteristics | |
| US7221662B2 (en) | Tone detection elimination | |
| CA2207550A1 (en) | System for tdma mobile-to-mobile vselp codec bypass | |
| JPH08130775A (en) | Digital cordless telephone system | |
| FI101760B (en) | Signaling procedure and digital radio system | |
| EP0680034B1 (en) | Mobile radio communication system using a sound or voice activity detector and convolutional coding | |
| KR100336513B1 (en) | A device of transmitting tone signal by using vocoder in wll | |
| JP2002506604A (en) | System for connecting a data communication device to a communication network via a wireless terminal | |
| JP2001238256A (en) | Variable speed coding system | |
| KR20000017335A (en) | Connection between mobile stations using different speech cooding rules | |
| JP3120836B2 (en) | CODEC1 link control method and CODEC1 link connection control base station | |
| US5999817A (en) | Method for performing encoding in a cellular network | |
| JPH0661903A (en) | Talking device | |
| EP1014738A2 (en) | A method and apparatus for efficient bandwith usage in a packet switching network | |
| US20050180402A1 (en) | Method for improving the quality of a voice transmission via an air interface | |
| JPH11284569A (en) | Transmission power control system | |
| KR19980050649A (en) | Voice to Text Converters in Digital Cell Phone Systems | |
| JP3357558B2 (en) | Call control method | |
| JP2002078016A (en) | Wireless communication device and wireless communication system | |
| KR100255300B1 (en) | Wireless local loop | |
| JP2684125B2 (en) | Audio processing device | |
| JP2782390B2 (en) | Audio processing device | |
| JPH11331069A (en) | Base band processor for digital cordless telephone set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20000920 |
|
| LAPS | Cancellation because of no payment of annual fees |