JP2001016152A - Wireless repeater - Google Patents

Wireless repeater

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Publication number
JP2001016152A
JP2001016152A JP11184759A JP18475999A JP2001016152A JP 2001016152 A JP2001016152 A JP 2001016152A JP 11184759 A JP11184759 A JP 11184759A JP 18475999 A JP18475999 A JP 18475999A JP 2001016152 A JP2001016152 A JP 2001016152A
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Japan
Prior art keywords
signal
quadrature
output
relay
receiving antenna
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Abandoned
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JP11184759A
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Japanese (ja)
Inventor
Isamu Chiba
Kenichiro Yamazaki
Rumiko Yonezawa
勇 千葉
健一郎 山崎
ルミ子 米澤
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Mitsubishi Electric Corp
三菱電機株式会社
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Priority to JP11184759A priority Critical patent/JP2001016152A/en
Publication of JP2001016152A publication Critical patent/JP2001016152A/en
Application status is Abandoned legal-status Critical

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Abstract

PROBLEM TO BE SOLVED: To remove a sneak interference signal component by sneaking a transmission signal from a transmitting antenna into a receiving antenna constituting plural branches, receiving a sneak interference signal, canceling a sneak wave through each of branches with a canceler, synthesizing these outputs through a coupler and performing diversity synthetic reception repetition.
SOLUTION: Information from a transmission line information controller 7 is outputted to a replica generator 8, and a signal stored in a buffer memory 6 is outputted as the replica signal of the sneak interference signal. In a subtracter 9, the output signal of the replica generator 8 is subtracted from the output signal of an orthogonal detector 4 and outputted as a canceler output signal. In the beginning of reception start, however, the cancel signal is not outputted so that the received signal is outputted as a canceler output signal as it is. In a coupler 10, the output signal from the subtracter 9 of each branch composed of plural antennas is outputted as a synthetic signal by performing diversity synthesis.
COPYRIGHT: (C)2001,JPO

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】この発明は、親局送信信号の中継装置に係り、特に中継装置の出力信号がその中継装置の受信アンテナに廻り込む場合に、その廻り込み干渉信号を除去でき、2本以上の受信アンテナを設置することによるダイバーシチ受信中継が可能な無線中継装置に関するものである。 TECHNICAL FIELD The present invention relates to a relay apparatus which is a master station transmission signals, especially when the output signal of the relay apparatus sneaks into the receiving antenna of the relay device, can drop the sneak interference signal, 2 it relates a wireless relay apparatus capable diversity reception relay by installing this more receive antennas.

【0002】 [0002]

【従来の技術】一般的に放送波中継装置は、親局が送出した送信信号を受信アンテナで受信し、増幅して送信アンテナより送信することにより、親局送信信号を中継するものである。 BACKGROUND ART Generally, a broadcast wave relay device receives the transmission signal the master station has sent by the receiving antenna, by transmitting from the transmitting antenna is amplified, it is to relay the master station transmitted signal. その際、放送波中継装置の送信アンテナと受信アンテナとの間に結合性があると、放送波中継装置からの送信出力信号が受信アンテナに廻り込み、発振を起こす問題がある。 At that time, if there is binding between the transmitting antenna of the broadcasting wave relay apparatus and the receiving antenna, transmits the output signal from the broadcast wave relay apparatus sneak the receiving antenna, there is a problem of causing oscillation.

【0003】この問題を解決する方法として、従来は、 [0003] As a method for solving this problem, the prior art,
図4に示す放送波中継装置の送信アンテナと受信アンテナとを分離して設置する分離方式を用いることや、図5 And the use of separation system installed by separating the transmit and receive antennas of the broadcast wave relay device shown in FIG. 4, FIG. 5
に示す非分離方式であっても、送信アンテナと受信アンテナ間の距離を十分に取る構成とすることにより、受信アンテナに入射する放送波中継装置からの出力信号の廻り込み干渉信号の受信レベルを下げる方法が取られている。 To be a non-separation method shown, with the configuration to take sufficient distance between the transmitting and receiving antennas, the reception level of the wraparound interference signal of the output signal from the broadcast wave relay device entering the receiving antenna a method of lowering has been taken. これらは田中他:”テレビ放送波中継における同一周波数送受信空中線間結合量測定〜SFNの実現性〜”,信学技報,OCS96-128 (1997-03)に示されるものである。 These Tanaka et al .: "Implementation of the same frequency transmitter antenna linkages measuring ~SFN in the television broadcasting wave relay ~" IEICE, is as shown in OCS96-128 (1997-03).

【0004】しかし、都心部においては放送波中継装置の設置位置を確保することが困難な状況にあり、且つ送受信アンテナ間の距離を十分にとるようなことは立地条件の制約から難しいのが現状である。 However, in urban areas it is in the difficult situation to secure the installation position of the broadcast wave relay equipment, and reality is difficult constraints of a thing Location take the distance between the transmitting and receiving antennas sufficient it is. また、放送波中継においては、1度の中継でなく、複数の中継装置を中継する多段中継方式が考えられているので、多段中継により、廻り込み波の影響が蓄積されていき、特性劣化が生じてしまうものと考えられる。 Further, in the broadcasting wave relay is not a one-time relay, since the multi-stage relay method for relaying a plurality of relay apparatuses has been considered, by a multistage relay, the influence of the sneak wave will be accumulated, deterioration in characteristics it is believed that occur.

【0005】従って、送受信アンテナ間の距離が短いままで、送信出力信号の廻り込み干渉信号をキャンセルできる廻り込み波キャンセラ機能を持つ放送波中継装置は、都心部での放送波中継装置設置スペースの問題を解決する上でも、多段中継方式においても、干渉信号成分が抑制されるので、大きなメリットを持つ。 Accordingly, while the distance between the transmitting and receiving antennas is short, the broadcast wave relay apparatus having a sneak wave canceller to cancel the wraparound interference signal of the transmission output signal of the broadcast wave relay device installation space in the inner city even in solving the problem, even in the multistage relay scheme, since the interference signal component is suppressed, with a great merit.

【0006】 [0006]

【発明が解決しようとする課題】従来手法では、 ・放送波中継装置の送信アンテナと受信アンテナ間で、 [Problems that the Invention is to Solve In the conventional technique, between the transmitting antenna and the receiving antenna of and broadcasting wave relay equipment,
十分な結合減衰量を得るために、送信アンテナと受信アンテナ間の距離を十分に取っていたが、そのために放送波中継装置のアンテナの物理的実寸法が大きくなってしまい、設置場所に制限ができてしまう。 To obtain a sufficient bonding amount of attenuation, but taking a sufficient distance between the transmitting and receiving antennas, it becomes large physical actual dimensions of the antenna of the broadcast wave relay device this places restrictions on the location she can. ・多段中継を行う場合、放送波中継装置の送信アンテナから受信アンテナへの廻り込み干渉信号成分が蓄積されていき、特性劣化が生じてしまう、などの問題点があった. • When performing a multi-stage relay, will be sneak interference signal component accumulation from the transmitting antenna of the broadcasting wave relay device to the receiving antenna, characteristic degradation is caused, there is a problem such. 本発明は、多段中継を行う場合、放送波中継装置の送信アンテナから受信アンテナへの廻り込み干渉信号成分を除去し、特性劣化を防ぎ、送信アンテナと受信アンテナの立地条件を緩和できる中継装置を得ることを目的とする。 The present invention, when performing multi-stage relay, sneak interference signal component from the transmitting antenna to the receiving antenna is removed broadcasting wave relay equipment to prevent characteristic deterioration, the relay apparatus can be relaxed Location of transmit and receive antennas for the purpose of obtaining.

【0007】 [0007]

【課題を解決するための手段】上述の目的を達成するために、第1の発明に係わる無線中継装置は、2つ以上のブランチを構成する受信アンテナと、中継装置の送信アンテナから送信した信号が、前記受信アンテナに廻り込み、廻り込み干渉信号を受信すると共に、それぞれのブランチで廻り込み波をキャンセルするキャンセラと、このキャンセラの出力を合成する結合器と、を有することにより、ダイバーシチ合成受信中継を行うものである。 To achieve the above object, according to the Invention The radio relay apparatus according to a first aspect of the present invention, a receiving antenna to configure two or more branches, the signal transmitted from the transmitting antenna of the relay apparatus but the sneak to the receiving antenna, which receives the sneak interference signal, a canceller for canceling waves sneak in each branch, and combiner for combining the outputs of the canceller, by having a diversity combining receiver and performs relay.

【0008】第2の発明に係わる無線中継装置は、親局送信信号の到来方向に指向性を持つ2本以上の指向性受信アンテナと、前記受信アンテナで受信された受信信号を増幅する第1のアンプと、前記第1のアンプからの出力を直交検波して受信直交信号に変換する直交検波器と、その受信直交信号とあらかじめ記憶しておいた信号との複素相関を計算する複素相関器と、前記あらかじめ信号を記憶し、蓄積しておくバッファメモリと、前記複素相関器出力から推定された伝送路情報を用いて過去のキャンセラ制御値を更新する動作を繰り返す伝送路情報制御器と前記伝送路情報制御器から出力された伝送路情報とあらかじめ記憶しておいた信号から、廻り込み干渉信号のレプリカを生成するレプリカ生成器と、前記受信アンテナで受信され [0008] The first radio relay apparatus according to the second invention, to amplify the two or more directional receiving antenna having directivity in the arrival direction of the master station transmitted signal, the signal received by the receiving antenna amplifier and a quadrature detector for converting the received quadrature signal by quadrature detection output from said first amplifier, complex correlator for calculating a complex correlation between a signal that has been previously stored and the received quadrature signal When the stores in advance signal, a buffer memory to be stored, the transmission path information controller repeats the operation of updating the previous canceller control value by using the transmission path information estimated from the complex correlator outputs the from the transmission path information and signals previously stored output from transmission path information controller, a replica generator for generating a replica of sneak interference signal is received by the receiving antenna 信号から、前記レプリカ生成器より出力されたキャンセラ信号を減算してキャンセラ出力信号を出力する減算器と、各アンテナのブランチにおける減算器出力を合成する結合器と、その結合器出力信号を直交変調する直交変調器と、その直交変調した信号を増幅して中継装置出力信号を出力する第2のアンプと、 From the signal, and a subtractor for outputting the canceller output signal by subtracting the canceller signal output from the replica generator, and combiner for combining the subtractor output in branches of each antenna, orthogonal modulation and the combiner output signal a quadrature modulator for a second amplifier that outputs a relay unit output signal by amplifying the quadrature modulated signal,
前記受信アンテナ方向に中継信号出力の指向性を持たないように配した指向性送信アンテナまたは無指向性送信アンテナと、を有するものである。 Those having a directional transmission antennas or omnidirectional transmission antennas arranged to have no directionality of the relay signal output to the receiving antenna direction.

【0009】第3の発明に係わるディジタル通信および放送中継装置は、前記複素相関器、前記伝送路情報制御器および前記レプリカ生成器を、多段構成とし、伝送路推定を行うことにより、複数の廻り込み波をキャンセルするものである。 A third digital communications and broadcasting repeater according to the present invention, the complex correlator, the transmission path information controller and the replica generator, and a multi-stage configuration, by performing channel estimation, a plurality of around it is intended to cancel the write wave.

【0010】第4の発明に係わる無線中継装置は、親局送信信号の到来方向に指向性を持つ第1の指向性受信アンテナと、自局送信アンテナ方向に指向した第2の指向性受信アンテナと、前記受信アンテナで受信された受信信号を増幅する第1のアンプと、前記第1のアンプからの出力を直交検波して受信直交信号に変換する直交検波器と、その受信直交信号とあらかじめ記憶しておいた信号との複素相関を計算する複素相関器と、前記あらかじめ信号を記憶し、蓄積しておくバッファメモリと、前記複素相関器出力から推定された伝送路情報を用いて過去のキャンセラ制御値を更新する伝送路情報制御器と伝送路情報制御器の出力信号をもとに、減衰器および移相器で、各ブランチの受信信号中の廻り込み干渉信号の振幅、位相を合わせ、 [0010] radio relay apparatus according to a fourth aspect of the present invention, a first directional reception antenna having a directivity in the arrival direction of the master station transmitted signal, a second directional receiving antenna which is directed to the local transmission antenna direction When a first amplifier for amplifying a received signal received by the receiving antenna, a quadrature detector for converting the received quadrature signal quadrature detection to an output from said first amplifier, in advance and the received quadrature signal a complex correlator for calculating a complex correlation between the stored keep signal, the advance signal store, a buffer memory to be stored, in the past by using a transmission path information estimated from the complex correlator output based on the output signal of the transmission path information controller for updating the canceller control value transmission path information controller, in attenuator and phase shifter, the amplitude of the wraparound interference signal in the received signal in each branch, the combined phase , り込み干渉信号を除去し、キャンセル信号を出力する減算器と、その減算器出力信号を直交変調する直交変調器と、その直交変調した信号を増幅して中継装置出力信号を出力する第2のアンプと、前記受信アンテナ方向に中継信号出力の指向性を持たないように配した指向性送信アンテナまたは無指向性送信アンテナと、を有するものである。 Removing the interrupt interference signal, a subtractor for outputting a cancel signal, the subtractor and the quadrature modulator for quadrature modulating an output signal, a second outputting a relay unit output signal by amplifying the quadrature modulated signal amplifier and, those having a directional transmission antennas or omnidirectional transmission antennas arranged to have no directionality of the relay signal output to the receiving antenna direction.

【0011】 [0011]

【発明の実施の形態】実施の形態1. DETAILED DESCRIPTION OF THE INVENTION Embodiment 1. 図1に本実施の形態1に係る放送波中継装置の構成図を示す。 Shows a block diagram of a broadcast wave relay apparatus according to the first embodiment in FIG. 図において、1は親局送信アンテナ、2は指向性受信アンテナ(2本以上)、3はアンプ、4は直交検波器、5は複素相関器、6はバッファメモリ、7は伝送路情報制御器、 In the figure, reference numeral 1 denotes the master station transmitting antennas, 2 directional receive antennas (2 or more), 3 amp, 4 quadrature detector, 5 complex correlators, the buffer memory 6, 7 transmission path information controller ,
8はレプリカ生成器、9は減算器、10は結合器、11 8 replica generator, 9 subtractor 10 coupler 11
は直交変調器、12はアンプ、13は指向性または無指向性送信アンテナである。 The quadrature modulator, 12 is an amplifier, 13 is a directional or non-directional transmitting antenna. なお、 It should be noted that,

【0012】次に、各部について説明する。 [0012] Next, a description will be given of each part. 2つの指向性受信アンテナ2(2a,2b)は、共に親局送信アンテナ1 Two directional receiving antenna 2 (2a, 2b) are both master station transmit antennas 1
の方向に指向性を持つアンテナで、本来は(理想的には)親局送信アンテナ1から送信された信号を受信するものである。 An antenna having directivity in the direction of the originally is to receive a signal transmitted from the (ideally) the master station transmit antennas 1.

【0013】しかし、親局送信アンテナ1からの送信信号の受信と同時に、後述する指向性または無指向性送信アンテナ13から出力される放送中継装置出力信号の廻り込み波が受信信号に混入されることになる。 [0013] However, at the same time as the reception of the transmitted signal from the master station transmitting antenna 1, wraparound wave of the broadcast relay device output signal output from the directional or non-directional transmitting antenna 13 will be described later, it is mixed into the received signal It will be. ここで、 here,
廻り込み干渉信号は、指向性または無指向性送信アンテナ13からの中継装置出力信号が、指向性受信アンテナ2と指向性または無指向性送信アンテナ13との指向特性による結合量だけ減衰された信号である。 Wraparound interference signal, the relay unit output signal from the directional or non-directional transmitting antenna 13, is attenuated by the coupling amount by directional characteristics of the directional receiving antenna 2 and a directional or non-directional transmitting antenna 13 signals it is.

【0014】アンプ3は、指向性受信アンテナ2が受信した信号を増幅するものである。 [0014] amplifier 3 amplifies the signal directional receiving antenna 2 has received. 直交検波器4は、アンプ3からの出力信号を直交検波し、直交I、Q信号を出力するものである。 Quadrature detector 4, and quadrature detection output signal from the amplifier 3, the orthogonal I, and outputs a Q signal.

【0015】複素相関器5は、直交検波器4からの直交I、Q信号と、バッファメモリ6からの出力信号との複素相関をとって出力するものである。 The complex correlator 105 is orthogonal I from orthogonal detector 4, and a Q signal, and outputs taking complex correlation between an output signal from the buffer memory 6. バッファメモリ6 Buffer memory 6
は、後述する結合器10の出力信号を記憶し、蓄積しておくものであり、指向性または無指向性送信アンテナ1 Stores the output signal of the combiner 10 to be described later, are those previously accumulated, directed or omni-directional transmit antennas 1
3から出力される中継装置信号の直交変調前の信号、つまり廻り込み波干渉信号が除去された信号が記憶される。 Quadrature modulation signal before the relay device signal output from the 3, i.e. signals sneak wave interference signals have been removed is stored.

【0016】直交I、Q信号は、バッファメモリ6に記憶された信号が、伝送路減衰を受け、位相回転され、遅延した信号と、親局送信アンテナ1からの送信信号との合成信号である。 [0016] Orthogonal I, Q signal, the signal stored in the buffer memory 6 receives the transmission path attenuation, the phase rotation is the composite signal and signal delayed, the transmitted signal from the master station transmitting antenna 1 . 本発明では、ディジタル通信や放送を行うので、親局送信アンテナ1からの送信信号は自己相関特性の強い信号を用いる。 In the present invention, since the digital communication and broadcasting, transmission signal from the master station transmitting antenna 1 uses a strong signal autocorrelation properties. 従って、複素相関器4において複素相関を計算することで、自身信号とは強い相関を持ち、他信号とは無相関となるので、相関値が最大値となる位置にタイミングを合わせることにより、廻り込み干渉信号の遅延時間、伝送路減衰情報、位相回転情報が得られる。 Therefore, by calculating the complex correlation in the complex correlator 4, has a strong correlation with its own signal, since the uncorrelated with other signals, by matching the timing to a position where the correlation value becomes the maximum value, around the delay time of the write interference signal, transmission path attenuation information, the phase rotation information is obtained.

【0017】これを簡単に式で説明する。 [0017] This will be briefly described in the equation. 中継装置の指向性または無指向性送信アンテナ13から出力される中継装置信号の直交変調前の信号をr(t)とする。 The signal of quadrature modulation previous relay device signal output from the directional or non-directional transmitting antenna 13 of the relay apparatus and r (t).

【0018】このr(t)が受信までの間に、大きさA [0018] During this r (t) is to receive, size A
の減衰を受け、θの位相回転を受けるとすると、指向性受信アンテナ2に入射してくる信号はAexp(jθ) Undergoing attenuation, when receiving the phase rotation of the theta, signals coming incident on the directional receiving antenna 2 Aexp (j.theta.)
r(t)+r(t+τ)と表される。 Is expressed as r (t) + r (t + τ).

【0019】この信号とバッファメモリ6に記憶しておいた信号r(t)との複素相関処理を行い、相関値が最大となる位置を探すことで、廻り込み干渉信号の入射タイミングが求められ、その点での相関値は、Aexp [0019] performs a complex correlation processing of the signal has been stored in the signal buffer memory 6 r (t), to look for the position where the correlation value is maximum, it is determined the incidence timing of the wraparound interference signal , the correlation value at that point, Aexp
(jθ)|r(t)| 2 +r(t) * r(t+τ)となる。 (Jθ) | a 2 + r (t) * r (t + τ) | r (t). ここで*は複素共役を示す。 Where * denotes the complex conjugate.

【0020】本発明では、親局送信アンテナ1からの送信信号を自己相関特性の強い信号を用いるので、上式の第2項のr(t) * r(t+τ)は無相関となり0と考えて良いこととなる。 In the present invention, since the transmission signal from the master station transmitting antenna 1 using a strong signal autocorrelation characteristics, the second term of the above equation r (t) * r (t + τ) is considered 0 becomes uncorrelated and thus it may be. そして、上式第1項を|r(t) Then, the first term above equation | r (t)
2で正規化を行えば、伝送路情報Aexp(jθ)が得られる。 | By performing the normalization in 2, the transmission path information Aexp (j.theta.) Is obtained. この情報を伝送路情報制御器7へ出力する。 And it outputs the information to the transmission path information controller 7.

【0021】伝送路情報制御器7は、複素相関器4からの出力信号を用いて伝送路推定情報の制御を行うものである。 The transmission path information controller 7 performs a control for the transmission path estimation information by using the output signal from the complex correlator 4. ここには、過去の伝送路推定情報が記憶されているので、それを用いて、廻り込み干渉信号の入射遅延時間、伝送路減衰情報、位相回転情報の更新を行い、その情報をレプリカ生成器8へ出力する。 Here, since the channel estimation information in the past is stored, by using the same incident delay time of sneak interference signal, transmission path attenuation information, updates the phase rotation information, a replica generator that information and outputs it to the 8. レプリカ生成器8 Replica generator 8
は、伝送路情報制御器7からの情報を得、それを用いて、バッファメモリ6に記憶された信号を、遅延させ、 May obtain information from the transmission path information controller 7, with it, the signal stored in the buffer memory 6 delays,
減衰し、位相を変化させ、廻り込み干渉信号のレプリカ信号を出力するものである。 Attenuated, changing the phase, and outputs the replica signal of sneak interference signal.

【0022】減算器9は、直交検波器4の出力信号である直交I、Q信号から、レプリカ生成器8から出力されるキャンセル信号を減算し、キャンセラ出力信号を出力するものである。 The subtractor 9 is orthogonal I is the output signal of the quadrature detector 4, from the Q signal, subtracts the cancellation signal output from the replica generator 8, and outputs the canceller output signal.

【0023】結合器10は複数のアンテナにより形成される、各ブランチの減算器9において出力されたキャンセル信号のダイバーシチ合成を行う。 The coupler 10 is formed by a plurality of antennas, performs diversity combining of the cancel signal output in the subtractor 9 for each branch.

【0024】直交変調器11は、結合器10からの合成出力信号を直交変調し、直交変調信号を出力するものである。 The quadrature modulator 11, the combined output signal from the coupler 10 quadrature modulates, and outputs the quadrature-modulated signal. アンプ12は、直交変調器11からの直交変調信号を増幅して出力するものである。 Amplifier 12 is intended for amplifying and outputting the quadrature modulated signal from the orthogonal modulator 11. 指向性または無指向性送信アンテナ13は、アンプ12からの増幅された直交変調信号を中継増幅信号として出力するものである。 Directed or omni-directional transmitting antenna 13, and outputs the amplified quadrature-modulated signal from the amplifier 12 as a relay amplifying the signal.

【0025】廻り込み干渉信号に複数の遅延波が存在するマルチパス環境において,図2に示すように、図1の複素相関器5、伝送路情報制御器7、およびレプリカ生成器8を遅延波の数だけ多段構成とすることにより、それぞれの遅延波をキャンセルすることができる。 [0025] In a multipath environment where a plurality of delayed waves to sneak interference signal is present, as shown in FIG. 2, the delay wave complex correlator 105, the transmission path information controller 7 and the replica generator 8, in FIG. 1 only a few by a multi-stage configuration, it is possible to cancel the respective delay waves. 図2は廻り込み波が3波存在する場合の構成を示している。 Figure 2 shows a configuration for existing wave sneak three waves.

【0026】それぞれの廻り込み波のキャンセラは、それぞれのレプリカ生成器55の3段で構成され、それぞれに直交検波器4とバッファメモリ6から信号が入力される。 The canceller of each sneak wave is composed of three stages of each replica generator 55, signals are input from the quadrature detector 4 and the buffer memory 6, respectively. それぞれのキャンセラの出力信号は減算器9で直交検波器4の出力信号から減算され、その後、前記同様に各ブランチ出力信号が結合器10で合成され、直交変調器11へ出力される。 The output signal of each of the canceller is subtracted from the output signal of the quadrature detector 4 in subtractor 9, then each branch output signal in the same manner as described above are combined in coupler 10 and output to the orthogonal modulator 11. なお、他の動作は図1と同様で説明を省く。 The other operations are not described in the same manner as FIG.

【0027】次に、図1を用いて放送波中継装置の動作について説明する。 Next, the operation of the broadcast wave relay apparatus will be described with reference to FIG. 親局送信アンテナ1からの送信信号受信開始当初は、親局送信アンテナ1からの送信信号が指向性受信アンテナ2で受信され、アンプ3で増幅されて、直交検波器4で、直交検波される。 The transmission signal received beginning from the master station transmitting antenna 1, transmission signal from the master station transmitting antenna 1 is received by the directional receiving antenna 2 is amplified by the amplifier 3, the quadrature detector 4, is quadrature detection .

【0028】複素相関器5では、直行検波器4の出力信号とバッファメモリ6に蓄えられた信号との複素相関を行い、伝送路情報制御器7へ出力する。 [0028] The complex correlator 105 performs a complex correlation between signals stored in the output signal and the buffer memory 6 nonstop detector 4, and outputs to the transmission path information controller 7. 伝送路情報制御器7では、過去の伝送路推定情報を加味して、伝送路推定値を更新する。 In the transmission path information controller 7, in consideration of the past channel estimation information, and updates the channel estimation value. その情報が、レプリカ生成器8に出力され、バッファメモリ6に記憶された信号が、遅延時間、信号レベル、位相を変動されて廻り込み干渉信号のレプリカ信号として出力される。 The information is output to the replica generator 8, the signal stored in the buffer memory 6, the delay time, the signal level, is output as a replica signal of the interference signal sneak been varied phase.

【0029】減算器9では、直交検波器4の出力信号からレプリカ生成器8の出力信号を減算し、キャンセラ出力信号として出力する。 The subtracter 9 subtracts the output signal of the replica generator 8 from the output signal of the quadrature detector 4, and outputs as the canceller output signal. 但し受信の開始当初は、キャンセル信号は出力されないので、受信信号がそのままキャンセラ出力信号として出力される。 However the start of the received initially, since cancellation signal is not output, the received signal is output as it is as the canceller output signal.

【0030】結合器10では、複数のアンテナによって形成される、各ブランチの減算器9からの出力信号をダイバーシチ合成し、合成信号として出力する。 [0030] In the coupler 10, it is formed by a plurality of antennas, an output signal from the subtractor 9 for each branch and diversity combining, and outputs the combined signal.

【0031】結合器10の出力信号は、バッファメモリ6に記憶され、また直交変調器11で直交変調され直交変調信号が出力される。 The output signal of the combiner 10 is stored in the buffer memory 6, also quadrature modulated signal is orthogonally modulated by the orthogonal modulator 11 is output. 直交変調器11から出力された信号はアンプ12で増幅されて指向性または無指向性送信アンテナ13から中継装置出力として送出される。 Signal output from the quadrature modulator 11 is sent as the relay unit output from the directional or non-directional transmitting antenna 13 is amplified by the amplifier 12.

【0032】そして、指向性または無指向性送信アンテナ13から中継装置出力信号が出力されると、指向性受信アンテナ1と指向性または無指向性送信アンテナ13 [0032] Then, directivity or the relay unit output signal from the omnidirectional transmitting antenna 13 is output, directional receiving antenna 1 and directional or non-directional transmitting antenna 13
との指向特性による結合量だけ減衰された廻り込み干渉信号が指向性受信アンテナ2から受信され、親局送信アンテナ1からの送信信号との合成信号が受信信号としてアンプ3に出力される。 Wraparound interference signal attenuated by the amount bound by the directional characteristic is received from the directional receiving antenna 2, the combined signal of the transmitted signal from the master station transmitting antenna 1 is outputted to the amplifier 3 as a reception signal with.

【0033】以降は、上記のように順次処理されていくと、伝送路情報制御器7では、その時点時点の伝送路推定情報が蓄積され、更新されていくことになる。 [0033] Thereafter, when are sequentially processed as described above, the transmission path information controller 7, the channel estimation information at that time point is accumulated, so that will be updated.

【0034】廻り込み干渉信号にそれぞれ遅延波が存在するマルチパス環境においては、図2に示すように、多段構成の各段は同様の操作が行われ、それぞれの出力を減算器9で直交検波器4の出力信号から減算し、各アンテナブランチの減算器9の出力は、結合器10で合成され、その出力はバッファメモリ6に記憶され、直交変調器9へ出力され、以下前記同様の操作が行われる。 [0034] In a multipath environment where the delay wave sneak interference signal is present, as shown in FIG. 2, each stage of the multi-stage configuration is the same operation is performed, quadrature detection each output by the subtracter 9 subtracted from the output signal of the vessel 4, the output of the subtractor 9 for each antenna branch are synthesized in the coupler 10, whose output is stored in the buffer memory 6, are outputted to the quadrature modulator 9, the same procedure follows It is carried out.

【0035】実施の形態2. [0035] Embodiment 2. 本実施の形態2による無線中継装置の構成について説明する。 Description will be given of a configuration of a radio relay apparatus according to the second embodiment.

【0036】図3は本実施の形態2による中継装置の構成を示す。 [0036] Figure 3 shows a configuration of a relay apparatus according to the second embodiment. 図において、1は親局送信アンテナ、2は、 In the figure, reference numeral 1 denotes the master station transmitting antennas, 2,
親局方向と自局送信アンテナ方向にそれぞれ指向性を持つ受信アンテナで、3はアンプ、4は直交検波器、5は複素相関器、6はバッファメモリ、7は伝送路情報制御器、101は減衰器、102は移相器、103は減算器、11は直交変調器、12はアンプ、13は指向性または無指向性送信アンテナである。 The receiving antenna with each directivity to the master station direction and local transmission antenna direction, 3 amp, 4 quadrature detector, 5 complex correlators, the buffer memory 6, 7 transmission path information controller, 101 attenuator 102 phase shifter, 103 a subtracter, 11 quadrature modulator, 12 is an amplifier, 13 is a directional or non-directional transmitting antenna.

【0037】次に、各部について説明する。 Next, a description will be given of each part. 指向性受信アンテナ2は、自局送信アンテナ13方向に指向性を持つアンテナ2aと親局送信アンテナ1方向に指向性を持つアンテナ2bで構成され、本来は(理想的には)受信アンテナ2aは自局送信アンテナ13から送信された信号を、受信アンテナ2bは親局送信アンテナ1から送信された信号を受信するものである。 Directional receiving antenna 2 is composed of an antenna 2b having directivity antenna 2a and the main station transmit antennas 1 direction having a directivity in local transmission antennas 13 direction, (ideally) originally receiving antenna 2a is the signal transmitted from the local transmission antenna 13, the receiving antenna 2b is to receive a signal transmitted from the master station transmitting antenna 1.

【0038】しかし、受信アンテナ2aには親局送信アンテナ1からの送信信号が、受信アンテナ2bには自局送信アンテナ13からの廻り込み干渉信号が混入される。 [0038] However, the transmitted signal from the master station transmitting antenna 1 to the receiving antenna 2a is, the receiving antenna 2b wraparound interference signals from the local transmission antenna 13 is mixed.

【0039】アンプ3、直交検波器4、複素相関器5、 The amplifier 3, a quadrature detector 4, the complex correlator 105,
バッファメモリ6、伝送路情報制御器7、直交変調器1 A buffer memory 6, transmission path information controller 7, the quadrature modulator 1
1、アンプ12は前記実施の形態1の場合と同様の動作をするので、ここでは省略する。 1, the amplifier 12 is a case similar to the operation of the first embodiment is omitted here.

【0040】受信アンテナ2で受信された信号は、アンプ3で増幅され、直交検波器4で直交検波され、直交I、Q信号を出力する。 The signal received by the reception antenna 2 is amplified by the amplifier 3, it is orthogonally detected by the orthogonal detector 4, the orthogonal I, and outputs a Q signal.

【0041】直交検波器4の出力信号とあらかじめ記憶されたバッファメモリ6の出力信号とから、複素相関器5で相関処理を行い、伝送路情報制御器7において、廻り込み干渉信号の入射タイミング、振幅、位相情報を推定する。 [0041] From the output signal of the quadrature detector 4 and advance the stored output signal of the buffer memory 6, performs the correlation process in the complex correlator 105, the transmission path information controller 7, the incident timing of the sneak interference signal, amplitude, to estimate the phase information.

【0042】伝送路情報制御器7の出力信号をもとに、 [0042] The output signal of the transmission path information controller 7 based on,
減衰器101、および移相器102で、二つのブランチの受信信号中の廻り込み干渉信号の振幅、位相を合わせ、減算器103において、受信アンテナ2bのブランチの移相器102の出力信号から、受信アンテナ2aのブランチの移相器102の出力信号を減算して、廻り込み干渉信号を除去し、キャンセル信号を出力する。 In the attenuator 101 and the phase shifter 102, the amplitude of the wraparound interference signal in the received signal in two branches, the combined phase, in the subtracter 103, from the output signal of the branch of the phase shifter 102 of the receiving antenna 2b, by subtracting the phase shifter 102 the output signal of the branch of the receiving antennas 2a, removes sneak interference signal, and outputs a cancel signal.

【0043】ここで、受信アンテナ2aに入射する親局送信アンテナ1からの送信信号をSa、自局廻り込み波をIa、受信アンテナ2bに入射する親局送信アンテナ1からの送信信号をSb、自局廻り込み波をIbとおく。 [0043] Here, the transmission signal from the master station transmitting antenna 1 that is incident on the receiving antenna 2a Sa, the own station sneak wave Ia, a transmission signal from the master station transmitting antenna 1 that is incident on the receiving antenna 2b Sb, the local station sneak wave put the Ib.

【0044】受信アンテナ2aは自局送信アンテナ13 [0044] The receiving antenna 2a is sending its own station antenna 13
方向に指向性を持ち、受信アンテナ2bは親局送信アンテナ1方向に指向性を持ったアンテナであるので、上記Sa、Ia、Sb、Ibの間にはSa<<SbまたはI Has directivity in the direction, so the receiving antenna 2b is an antenna having directivity in the master station transmit antennas 1 direction, the Sa, Ia, Sb, between Ib Sa << Sb or I
a>>Ibの関係が成立する。 Relationship of a >> Ib is established. この場合、本発明はIa In this case, the present invention is Ia
とIbの廻り込み干渉信号成分の振幅と位相を合わせて合成するので、次のことが言える。 And so synthesized together sneak interference signal component of the amplitude and phase of Ib, the following can be said.

【0045】Sa<<Sbが成立する場合には、IaとIbの成分の減算を行う際に、親局送信アンテナ1からの送信信号成分を小さくしてしまうことがないと近似できる。 [0045] When the Sa << Sb is satisfied, when performing subtraction of components Ia and Ib, can be approximated as never result in reduced transmission signal component from the master station transmitting antenna 1. また、Ia>>Ibが成立する場合には、IaとIbの大きさをそろえると同時にSa<<Sbが成立し、この場合も親局送信アンテナ1からの送信信号成分を小さくしてしまうことがないと近似できる。 Further, Ia >> when Ib is satisfied, align the size of Ia and Ib when Sa << Sb is established at the same time, it would reduce the transmit signal component from the master station transmitting antenna 1 Again It can be approximated that there is no. このような操作により親局送信アンテナ1からの送信信号を良好に受信する。 Such operations received favorably transmitted signal from the master station transmitting antenna 1.

【0046】減算器10の出力信号は、バッファメモリ6に記憶され、また直交変調器11で直交変調され、アンプ2で増幅され、指向性または無指向性送信アンテナ13から中継増幅信号が出力される。 The output signal of the subtractor 10 is stored in the buffer memory 6, also are orthogonally modulated by the orthogonal modulator 11 are amplified by the amplifier 2, the relay amplifies the signal is output from the directional or non-directional transmitting antenna 13 that.

【0047】以降は、上記操作が繰り返し行われる。 [0047] After that, the above-mentioned operation is repeated. なお、上記実施の形態1および2では放送用の中継装置で説明したが、通信信号などの各種情報を無線伝送する種々の中継器にも適用でき、放送波用に限定されるものではない。 Although described in the relay apparatus for broadcasting the first and second embodiments, it can be applied to various kinds of information such as communication signals to the various repeaters of radio transmission, but is not limited to broadcast waves.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】 実施の形態1による無線中継装置の構成図である。 1 is a configuration diagram of a radio relay apparatus according to the first embodiment.

【図2】 廻り込み波が3波存在する場合の無線中継装置の構成図である。 [Figure 2] sneak wave is a configuration diagram of a radio relay apparatus in the case where there are three waves.

【図3】 実施の形態2による無線中継装置の構成図である。 3 is a configuration diagram of a radio relay apparatus according to the second embodiment.

【図4】 従来の放送波中継装置の送信アンテナと受信アンテナとを分離して設置する場合の構成図である。 4 is a configuration diagram of a case of installing by separating the transmit and receive antennas of the conventional broadcast wave relay device.

【図5】 従来の放送波中継装置の送信アンテナと受信アンテナとを分離せずに設置する場合の構成図である。 5 is a configuration diagram of a case where the transmitting antenna of a conventional broadcast wave relay device and the reception antenna is placed without being separated.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 親局送信アンテナ 2 中継局受信アンテナ 2a 素子アンテナ1 2b 素子アンテナ2 3 アンプ 4 直交検波器 5 複素相関器 6 バッファメモリ 7 伝送路情報制御器 8 レプリカ生成器 9 減算器(図1) 10 結合器 11 直交変調器 12 アンプ 13 中継局送信アンテナ 55 レプリカ生成器 101 減衰器 102 移相器 103 減算器(図3) 1 master station transmitting antenna 2 RS receiving antenna 2a element antenna 1 2b element antenna 2 3 amplifier 4 quadrature detector 5 complex correlators 6 buffer memory 7 the transmission path information controller 8 replica generator 9 subtractor (Figure 1) 10 coupled vessel 11 orthogonal modulator 12 amplifier 13 relay station transmitting antenna 55 replica generator 101 attenuators 102 phase shifter 103 subtractor (Figure 3)

───────────────────────────────────────────────────── フロントページの続き (72)発明者 米澤 ルミ子 東京都千代田区丸の内二丁目2番3号 三 菱電機株式会社内 Fターム(参考) 5J021 AA02 AA06 CA06 DB02 DB03 EA04 FA05 FA14 FA15 FA17 FA18 FA26 FA30 FA32 GA01 GA06 HA05 HA06 HA10 5K046 AA05 EE06 EE16 EE37 EE47 EE55 EE57 EF23 HH11 KK00 5K059 AA08 AA12 CC03 DD04 DD07 DD32 DD35 EE02 5K072 AA04 AA22 BB14 BB25 BB27 CC35 DD16 EE33 GG02 GG03 GG12 GG13 GG14 GG37 ────────────────────────────────────────────────── ─── front page of the continuation (72) inventor Rumiko Yonezawa, Chiyoda-ku, tokyo Marunouchi 2-chome No. 2 No. 3 Mitsubishi electric Co., Ltd. in the F-term (reference) 5J021 AA02 AA06 CA06 DB02 DB03 EA04 FA05 FA14 FA15 FA17 FA18 FA26 FA30 FA32 GA01 GA06 HA05 HA06 HA10 5K046 AA05 EE06 EE16 EE37 EE47 EE55 EE57 EF23 HH11 KK00 5K059 AA08 AA12 CC03 DD04 DD07 DD32 DD35 EE02 5K072 AA04 AA22 BB14 BB25 BB27 CC35 DD16 EE33 GG02 GG03 GG12 GG13 GG14 GG37

Claims (4)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 親局送信信号の中継に用いられる無線中継装置において、2つ以上のブランチを構成する受信アンテナと、 中継装置の送信アンテナから送信した信号が 前記受信アンテナに廻り込み、廻り込み干渉信号を受信すると共に、それぞれのブランチで廻り込み波をキャンセルするキャンセラと、 このキャンセラの出力を合成する結合器と、を有することにより、ダイバーシチ合成受信中継を行うことを特徴とする無線中継装置。 1. A radio relay apparatus for use in a relay of the master station transmitted signal, and a receiving antenna to configure two or more branches, the signal transmitted from the transmitting antenna of the relay apparatus sneak into the receiving antenna, wraparound which receives an interference signal, the canceller to cancel the waves sneak in each branch, and combiner for combining the outputs of the canceller, by having the radio relay apparatus and performs diversity combining reception relay .
  2. 【請求項2】 親局送信信号の中継に用いられる無線中継装置において、 親局送信信号の到来方向に指向性を持つ2本以上の指向性受信アンテナと、 前記受信アンテナで受信された受信信号を増幅する第1 2. A radio repeater for use in a relay of the master station transmit signals, and two or more directional receiving antenna having directivity in the arrival direction of the master station transmit signal, the signal received by the receiving antenna the amplifying a 1
    のアンプと、 前記第1のアンプからの出力を直交検波して受信直交信号に変換する直交検波器と、 その受信直交信号とあらかじめ記憶しておいた信号との複素相関を計算する複素相関器と、 前記あらかじめ信号を記憶し、蓄積しておくバッファメモリと、 前記複素相関器出力から推定された伝送路情報を用いて過去のキャンセラ制御値を更新する動作を繰り返す伝送路情報制御器と前記伝送路情報制御器から出力された伝送路情報とあらかじめ記憶しておいた信号から、廻り込み干渉信号のレプリカを生成するレプリカ生成器と、前記受信アンテナで受信された信号から、前記レプリカ生成器より出力されたキャンセラ信号を減算してキャンセラ出力信号を出力する減算器と、 各アンテナのブランチにおける減算器出力を合成する結合器 Amplifier and a quadrature detector for converting the received quadrature signal by quadrature detection output from said first amplifier, complex correlator for calculating a complex correlation between a signal that has been previously stored and the received quadrature signal When the stores in advance signal, a buffer memory to be stored, the transmission path information controller repeats the operation of updating the previous canceller control value by using the transmission path information estimated from the complex correlator outputs the from the transmission path information and signals previously stored output from transmission path information controller, a replica generator for generating a replica of sneak interference signal from the received signal in the receiving antenna, the replica generator a subtractor for outputting an canceler output signal by subtracting a more outputted canceller signal, combiner for combining the subtractor output in branches of each antenna 、 その結合器出力信号を直交変調する直交変調器と、 その直交変調した信号を増幅して中継装置出力信号を出力する第2のアンプと、前記受信アンテナ方向に中継信号出力の指向性を持たないように配した指向性送信アンテナまたは無指向性送信アンテナと、を有することを特徴とする無線中継装置。 A quadrature modulator, and a second amplifier that outputs a relay unit output signal by amplifying the quadrature modulated signal, the directivity of the relay signal output to the receiving antenna direction have orthogonal modulating the combiner output signal wireless relay apparatus characterized by having a directional transmission antennas or omnidirectional transmission antennas arranged so as not.
  3. 【請求項3】 前記複素相関器、前記伝送路情報制御器および前記レプリカ生成器は、多段構成として伝送路推定を行うことにより、複数の廻り込み波をキャンセルすることを特徴とする請求項2に記載の無線中継装置。 Wherein the complex correlator, the transmission path information controller and the replica generator, by performing channel estimation as a multi-stage configuration, claim 2, characterized in that for canceling a plurality of sneak wave wireless relay apparatus according to.
  4. 【請求項4】 親局送信信号の中継に用いられる無線中継装置において、 親局送信信号の到来方向に指向性を持つ第1の指向性受信アンテナと、 自局送信アンテナ方向に指向した第2の指向性受信アンテナと、 前記受信アンテナで受信された受信信号を増幅する第1 4. A radio relay apparatus for use in a relay of the master station transmit signal, a first directional reception antenna having a directivity in the arrival direction of the master station transmitted signal, first and directed to the local transmission antenna direction 2 first amplifying between directional receiving antennas, a received signal received by the receiving antenna
    のアンプと、 前記第1のアンプからの出力を直交検波して受信直交信号に変換する直交検波器と、 その受信直交信号とあらかじめ記憶しておいた信号との複素相関を計算する複素相関器と、 前記あらかじめ信号を記憶し、蓄積しておくバッファメモリと、 前記複素相関器出力から推定された伝送路情報を用いて過去のキャンセラ制御値を更新する伝送路情報制御器と伝送路情報制御器の出力信号をもとに、減衰器および移相器で、各ブランチの受信信号中の廻り込み干渉信号の振幅、位相を合わせ、廻り込み干渉信号を除去し、キャンセル信号を出力する減算器と、 その減算器出力信号を直交変調する直交変調器と、 その直交変調した信号を増幅して中継装置出力信号を出力する第2のアンプと、前記受信アンテナ方向に中継信号出力の Amplifier and a quadrature detector for converting the received quadrature signal by quadrature detection output from said first amplifier, complex correlator for calculating a complex correlation between a signal that has been previously stored and the received quadrature signal When the advance signal store, a buffer memory to be stored, the transmission path information and control transmission path information controller for updating the past canceler control value by using the transmission path information estimated from the complex correlator output based on the output signal of the vessel, attenuator and in the phase shifter, the amplitude of the wraparound interference signal in the received signal in each branch, the combined phase, to remove the sneak interference signal, a subtractor for outputting a cancel signal If a quadrature modulator for quadrature modulating the subtractor output signal, a second amplifier that outputs a relay unit output signal by amplifying the quadrature modulated signal, the relay signal output to the receiving antenna direction 向性を持たないように配した指向性送信アンテナまたは無指向性送信アンテナと、を有することを特徴とする無線中継装置。 Wireless relay apparatus characterized by comprising: a directional transmission antennas or omnidirectional transmission antennas arranged to have no tropism, the.
JP11184759A 1999-06-30 1999-06-30 Wireless repeater Abandoned JP2001016152A (en)

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WO2004098207A2 (en) * 2003-04-28 2004-11-11 Matsushita Electric Works Ltd. Radio relay device
JP2007519306A (en) * 2003-11-17 2007-07-12 ケラン インコーポレイテッド Method and system for antenna interference cancellation
JP2010503272A (en) * 2006-09-01 2010-01-28 クゥアルコム・インコーポレイテッドQualcomm Incorporated Repeater with dual receiver antenna configuration or dual transmitter antenna configuration adapted for improved isolation
US8023885B2 (en) 2004-05-13 2011-09-20 Qualcomm Incorporated Non-frequency translating repeater with downlink detection for uplink and downlink synchronization
US8027642B2 (en) 2004-04-06 2011-09-27 Qualcomm Incorporated Transmission canceller for wireless local area network
US8059727B2 (en) 2005-01-28 2011-11-15 Qualcomm Incorporated Physical layer repeater configuration for increasing MIMO performance
US8060009B2 (en) 2002-10-15 2011-11-15 Qualcomm Incorporated Wireless local area network repeater with automatic gain control for extending network coverage
US8078100B2 (en) 2002-10-15 2011-12-13 Qualcomm Incorporated Physical layer repeater with discrete time filter for all-digital detection and delay generation
US8089913B2 (en) 2002-10-24 2012-01-03 Qualcomm Incorporated Physical layer repeater with selective use of higher layer functions based on network operating conditions
US8095067B2 (en) 2004-06-03 2012-01-10 Qualcomm Incorporated Frequency translating repeater with low cost high performance local oscillator architecture
US8111645B2 (en) 2002-11-15 2012-02-07 Qualcomm Incorporated Wireless local area network repeater with detection
US8122134B2 (en) 2002-10-11 2012-02-21 Qualcomm Incorporated Reducing loop effects in a wireless local area network repeater
US8437251B2 (en) 2005-12-22 2013-05-07 Qualcomm Incorporated Methods and apparatus for communicating transmission backlog information
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US8559379B2 (en) 2006-09-21 2013-10-15 Qualcomm Incorporated Method and apparatus for mitigating oscillation between repeaters
US8694042B2 (en) 2005-10-14 2014-04-08 Qualcomm Incorporated Method and apparatus for determining a base station's transmission power budget
US8774079B2 (en) 2006-10-26 2014-07-08 Qualcomm Incorporated Repeater techniques for multiple input multiple output utilizing beam formers
US8811348B2 (en) 2003-02-24 2014-08-19 Qualcomm Incorporated Methods and apparatus for generating, communicating, and/or using information relating to self-noise
US8885688B2 (en) 2002-10-01 2014-11-11 Qualcomm Incorporated Control message management in physical layer repeater
US8965413B2 (en) 2006-04-12 2015-02-24 Qualcomm Incorporated Locating a wireless local area network associated with a wireless wide area network
US9119220B2 (en) 2005-12-22 2015-08-25 Qualcomm Incorporated Methods and apparatus for communicating backlog related information
US9125093B2 (en) 2005-12-22 2015-09-01 Qualcomm Incorporated Methods and apparatus related to custom control channel reporting formats
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