JPH0937337A - Method for assigning channel in cellular mobile object communication equipment - Google Patents

Method for assigning channel in cellular mobile object communication equipment

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Publication number
JPH0937337A
JPH0937337A JP18290395A JP18290395A JPH0937337A JP H0937337 A JPH0937337 A JP H0937337A JP 18290395 A JP18290395 A JP 18290395A JP 18290395 A JP18290395 A JP 18290395A JP H0937337 A JPH0937337 A JP H0937337A
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channel
station
master station
cellular mobile
mobile communication
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JP18290395A
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JP3376768B2 (en
Inventor
Noriyuki Fukui
Takashi Kawabata
Yoichi Moriya
Akihiro Shibuya
孝史 川端
陽一 森谷
昭宏 渋谷
範行 福井
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Mitsubishi Electric Corp
三菱電機株式会社
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Abstract

PROBLEM TO BE SOLVED: To attain a dynamic channel assigning system for suppressing the nimler of tims of channel reassignation. SOLUTION: When communication requests are generated in slave stations in plural cells, a master station for periodically storing the incoming interference wave receiving level of an idle channel stores an incoming frequired wave receiving level at the call originating/terminating time of each slave station (S1). The master station detects information related to non-movement or movement to any direction at the time of movement and receives the information of a moving slave station at the fixed time (S2). An idle channel with the highest priority is selected in accordance with fixed or moving priority table A or B (S3 or S4). An incoming or outgoing CIR (power ratio of a required wave wave to an interference wave) value for the selected channel is judged (S5 or S6). When the incoming and outgoing CIR values are more than respective prescribed thresholds, the channel is assigning, and when the values are less than the prescribed thresholds and an assigning enable channel can not be detected, forced disconnection or call loss is executed (S7, S8). Consequently the load increment of the master station or the reduction of service quality can be avoided.

Description

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

【0001】 [0001]

【産業上の利用分野】この発明は移動体通信サービスエリアを分割する各セル(無線ゾーン)単位で親局が当該子局に対し割当て可能な通話チャネルを選択するセルラー移動体通信装置のチャネル割当て方法に関する。 BACKGROUND OF THE INVENTION channel assignment of the present invention is a cellular mobile communication apparatus the master station selects the assignable traffic channel to the child station in each cell (wireless zone) units for dividing the mobile communication service area a method for.

【0002】 [0002]

【従来の技術】たとえば特開平4−351126号公報に示す従来例のセルラー移動体通信装置のチャネル割当て方法は図5(a)に示すように、図5(b)に示す当該システム構成で親局1aが定期的に空き通話チャネルの上り干渉波受信レベルU UPを記憶しているとし、当該セル3aに在圏する子局2aに通話要求が発生すると、 Channel assignment method of the prior art, for example conventional cellular mobile communication apparatus shown in JP-A-4-351126, as shown in FIG. 5 (a), the parent in the system configuration shown in FIG. 5 (b) station 1a is to be stored uplink interference wave reception level U UP periodically idle traffic channel, the call request to the slave station 2a that located in the cell 3a is generated,
当該親局1aは次のアルゴリズムを採る。 The master station 1a takes the following algorithm. (1)チャネル割当てを開始し、子局2aの発呼または着呼時に当該制御チャネルで受信する発呼要求信号または呼び出し応答信号の受信レベルを上り希望波受信レベルD UPとして記憶する(手順S1)。 (1) Start the channel allocation, and stores the receiving level of the call request signal or page response signal received in the control channel when a call or called slave station 2a as the uplink desired wave reception level D UP (Step S1 ). (2)すべての親局に共通な優先順序テーブルA′に従い、最も優先順序の高い空き通話チャネルを選択する(手順S3a)。 (2) in accordance with any of the common parent station priority table A ', selects the highest priority empty speech channel (Step S3a). (3)選択する当該通話チャネルに対し、上りCIR (3) with respect to the call channel to be selected, uplink CIR
(希望波対干渉波電力比)値D UP /U UPが所定閾値以上ならば、子局2aから当該下り希望波と干渉波受信レベルD downとU downの測定結果を受け取る。 (Signal to interference power ratio) value D UP / U UP is if more than a predetermined threshold value, and receives the measurement result of the downward desired wave and the interference wave reception level D down and U down from the slave station 2a. 下りCIR値D down /U downが所定閾値未満ならば、次に優先順序の高い空き通話チャネルを選択しすべての通話チャネルが終了するまで繰返す(手順S5)。 If less than the downlink CIR value D down / U down a predetermined threshold, then select the high idle speech channel priority order is repeated until all the speech channel is terminated (Step S5). (4)上りと下りCIR値D UP /U UPとD down /U down (4) upstream and downstream CIR value D UP / U UP and D down / U down
が所定閾値以上ならば、当該通話チャネルを割当てる(手順S7)。 There if more than a predetermined threshold, assigning the traffic channel (Step S7). (5)割当て可能な通話チャネルが見つからないならば、強制切断または呼損とする(手順S8)。 (5) If not found assignable traffic channel, a forced disconnect or call loss (steps S8).

【0003】上記従来例のセルラー移動体通信装置のチャネル割当て方法は、簡単な分散制御で通信ごとにすべての通話チャネルから干渉妨害が発生しない通話チャネルを選択する方式(ダイナミックチャネル割当て方式) [0003] The channel allocation method of prior art cellular mobile communication apparatus selects a speech channel is interference from all traffic channel does not occur for each communication by a simple distributed control method (dynamic channel allocation method)
を採る。 The take.

【0004】上記従来例は図6の親局1aにおける平均干渉波と希望波受信レベルで、各チャネル番号に対し優先順序の高いほど大きく、低いほど小さい傾向がある。 [0004] The above conventional example in the desired wave reception level and the average interference in the parent station 1a in FIG. 6, greater the higher the priority for each channel number, there is a lower smaller tendency.
従って優先順序に従い通話チャネルを選択することは、 Therefore selecting a traffic channel according to the priority order,
干渉波受信レベルの大きい通話チャネルから選択することと等価であり、常に必要最小限のCIR値でチャネル割当てをしていることになる。 It is equivalent to selecting from a large speech channel interference wave reception level, so that has a channel assignment always required minimum CIR value. また親局1aから近傍の当該子局2aで頻繁に繰返し使用し、親局1aから遠隔の当該子局2aでより大きな間隔で繰返し使用するようになる。 The frequently used repeatedly in the child station 2a in the vicinity of the master station 1a, so that repeated use at a larger distance at the remote of the child station 2a from the master station 1a. また上記従来例は移動体通信サービスエリアを複数の六角形セル単位で隙間なくおおう図7(a)の固定セルラー網4で、たとえばC1とC2の方向へ移動する子局5aと5bから通話要求があり当該親局との相互距離が変化すると、通話要求時の場所で選択する通話チャネルがCIRの所定閾値を満足しなくなる場合がある。 The above conventional example in FIG. 7 fixed cellular network 4 (a) covering without gaps mobile communication service area with a plurality of hexagonal cells unit, for example a call request from the slave station 5a and 5b to move in the direction of the C1 and C2 when there mutual distance between the master station is changed, there are cases where traffic channel selected in place during a call request can not satisfy a predetermined threshold CIR. また一般に移動する子局5が通話中にセルをまたがると、移動先セルの親局は当該子局5との通話を干渉波として観測するから通話中と異なるチャネルを割当てることになり、ハンドオフ機能(セルをまたがって移動しても通話を継続させる機能)を満足しない場合がある。 Further, when the slave station 5 to move generally spans the cell during a call, the master station of the target cell will be assigned a channel different from the busy because observing the call with the child station 5 as an interference wave, hand-off feature it may not satisfy the (moving across cell functions to continue the call).
また図7(b)の固定セルラー網4で、たとえば列車や自動車などの移動体6a上に設置し、システムAの子局8bに対する親局8aとシステムBの親局9aに対する子局9bとを組み合わせ構成する、図7(c)の文献(国際電気通信連合(ITC):FUTURE PUB The fixed cellular network 4 of FIG. 7 (b), such as trains and placed on a moving member 6a such as an automobile, and a slave station 9b to the parent station 9a master station 8a and the system B to the slave station 8b system A in combination configuration, literature FIG 7 (c) (International Telecommunication Union (ITC): FUTURE PUB
LIC LAND MOBILE TELECOMMU LIC LAND MOBILE TELECOMMU
NICATION SYSTEMS(FPLMTS)、 NICATION SYSTEMS (FPLMTS),
RECOMMENDATION 687−1、FIGU RECOMMENDATION 687-1, FIGU
RE1)に示す移動する親局6が当該子局と通話をすると、移動先で固定セルラー網4の使用周波数と干渉し、 The parent station 6 to be moved shown in RE1) to a call with child station, interferes with the use frequency of the fixed cellular network 4 in the destination,
通話要求時の場所で選択する通話チャネルがCIRの所定閾値を満足しなくなる場合がある。 There are cases where traffic channel selected in place during a call request can not satisfy a predetermined threshold CIR. また移動先の地上に固定する親局がCIRの所定閾値を満足しなくなり、 The master station for fixing on the ground of the destination is no longer satisfy a predetermined threshold value of CIR,
形成する同一周波数の空間的な配置に影響を及ぼす場合がある。 It may affect the spatial arrangement of the same frequency to be formed. たとえば複数の移動する親局6aと6bがそれぞれCIRの所定閾値を満足する通話チャネルを選択できたとしても、親局6aと6bがP1とP3の方向へ相互に移動し距離が近づくと互いに干渉を及ぼすから、一般に複数の移動する親局が存在する場合は当該親局間の干渉を考慮する必要がある。 For example, even the master station 6a and 6b a plurality of movement is able to select a communication channel which satisfies a predetermined threshold value of CIR, respectively, interfere with each other when the master station 6a and 6b are mutually moved distance approaches the direction of the P1 and P3 since the on, if a general multiple mobile parent station exists, it is necessary to consider the interference between the master station.

【0005】 [0005]

【発明が解決しようとする課題】上記のような従来のセルラー移動体通信装置のチャネル割当て方法では、簡単な分散制御で通信ごとにすべての通話チャネルから干渉妨害が発生しない通話チャネルを選択するダイナミックチャネル割当て方式を採るから、移動する複数の子局が相互距離を変化させる場合や通話中にセルをまたがる場合や移動する親局が移動先で使用周波数と干渉する場合や、複数の移動する親局間で互いに干渉を及ぼす場合、 The channel allocation method of a conventional cellular mobile communication device as described above that [0005], dynamic selecting the speech channel is interference from all traffic channel does not occur for each communication by a simple distributed control since taking channel assignment scheme, and if the master station in which a plurality of slave stations to be moved to or when moving across the cell during a case or a call to change the mutual distance interfere with use frequency in the destination, parent of a plurality of mobile If on the mutual interference between the stations,
チャネル再割当てが必要になり、親局の負荷を増大する。 Channel reassignment is required, to increase the load on the master station. またチャネル切替えに伴う瞬断や割当て可能なチャネルが見つからない場合、通話中の強制切断を生じ、サービスの品質を低下する。 Also if you can not find the instantaneous interruption or assignable channels associated with channel switching, cause forced disconnection of a call, reduces the quality of service. また移動する子局の移動先の地上に固定する親局が形成する同一周波数の空間的な配置に影響を及ぼす場合、周波数の利用効率を低下する問題点がある。 Also it affects the spatial arrangement of the same frequency that the master station forms to secure the ground destination slave station to be moved, there is a problem of reducing the use efficiency of frequency.

【0006】この発明が解決しようとする課題は、セルラー移動体通信装置のチャネル割当て方法で親局の負荷増大やサービスの品質低下を回避するため、移動しない局と移動する局間や異なる移動方向の局間で発生する干渉の可能性を軽減するように通話チャネルを選択する方式(通話チャネルの再割当て回数を抑制するダイナミックチャネル割当て方式)を提供することにある。 An object to be this invention solves is to avoid the quality deterioration of load increase and service master station channel allocation method in a cellular mobile communication system, interoffice or different moving direction to move the station does not move and to provide a method of selecting a call channel to mitigate the possibility of interference occurring between the stations at (dynamic channel assignment method of inhibiting the reassignment number of speech channels).

【0007】 [0007]

【課題を解決するための手段】この発明のセルラー移動体通信装置のチャネル割当て方法は、複数セル内の親局が互いに一定の順序に従い全通話チャネル中から希望波対干渉波電力比が所定閾値以上の当該通話チャネルを割当てるもので、上記課題を解決するためつぎの手段を設け、通話チャネルの再割当て回数を抑制するダイナミックチャネル割当て方式を採ることを特徴とする。 Means for Solving the Problems] channel allocation method of a cellular mobile communication system of the present invention, the signal to interference ratio from the total traffic channel master station in accordance with a fixed sequence to each other in multiple cells of a predetermined threshold value intended to assign more of the traffic channel, provided the following means for solving the above problems, it is characterized by taking the dynamic channel assignment scheme to suppress the reassignment number of speech channels.

【0008】第1の手順は、当該局の移動状態ごとに優先順序を区別する複数の優先順序テーブルをもち、条件に応じ使用する優先順序テーブルを違える。 [0008] The first step has a plurality of priority tables distinguish priority for each moving state of the station, it made different priority order table for use according to conditions. または各優先順序テーブルは、システムに割り当てられる通話チャネルを共有する。 Or each priority table share a traffic channel allocated to the system. また、親局もしくは子局の移動しないまたはいずれかのもしくは移動方向を区別して一定の方向に移動する状態ごとに優先順序を区別する。 Further, distinguishing the priority for each state that does not move the master station or a slave station or any or by distinguishing the moving direction to move in a certain direction.

【0009】第2の手順は、隣接セル内の他の親局からハンドオフをする当該子局にチャネル割当てをする場合、当該子局が使用する通話チャネルに対し再測定をする干渉波受信レベルを判定に用いる。 [0009] The second procedure, if the channel allocated to the child station to the handoff from another master station in the adjacent cell, an interference wave reception level of the re-measured for speech channel child station uses used for the determination.

【0010】 [0010]

【作用】この発明のセルラー移動体通信装置のチャネル割当て方法は、まず移動体通信サービスエリアで複数セル内の親局もしくは子局の移動状態、たとえば移動しないまたはいずれかのもしくは一定の方向に移動する状態ごとに違える優先順序に従い割当て可能な通話チャネルを選択する。 [Action] channel assignment method for a cellular mobile communication system of the present invention mobile, first moving state of the master station or a slave station in the multiple cells in the mobile communication service area, for example not or any or in a certain direction movement selecting assignable traffic channel according to the priority order made different for each state. これにより異なる移動方向で同じチャネルを割当てられる複数の親局または子局間相互が与える干渉を少なくする。 Thereby reducing the plurality of master station or a slave station mutual gives interference assigned the same channel in different direction of movement. または移動しない親局または子局が形成する同一周波数の空間的な配置に対し、移動する親局または子局が与える干渉を少なくする。 Or does not move relative spatial arrangement of the same frequency that the master station or slave station forms, to reduce the interference that master station or slave station gives to the mobile. つぎに隣接セル内の他の親局からハンドオフをする当該子局が使用する通話チャネルに対し、干渉波受信レベルの再測定をし当該子局にチャネル割当てをする。 Next to speech channel child station uses to a handoff from another master station in the adjacent cell, the channel assigned to the child station to the remeasurement of the interference wave reception level. 当該子局が通信している信号に対し、ハンドオフ前の隣接セル内親局は干渉波として観測するから測定干渉波受信レベルは非常に大きいのに対し、ハンドオフ後の当該セル内親局は希望波として観測するから再測定干渉波受信レベルは小さい。 To signal the child station is communicating, whereas the adjacent cells in the parent station before handoff the measured interference wave reception level from observation is very large as an interference wave, the cell in the parent station after handoff desired remeasuring the interference wave reception level from observed as a wave is small. 従って当該通話チャネルに対し、優先順序が高くCIR Thus with respect to the call channel, the priority order is higher CIR
(希望波対干渉波電力比)が高いと判断し、引き続き割当てる。 It determines that (signal to interference power ratio) is high, continued allocated.

【0011】 [0011]

【実施例】この発明を示す一実施例のセルラー移動体通信装置のチャネル割当て方法は図1(a)に示すように、上記従来例の図7(b)に示す当該固定セルラー網4で親局が定期的に空き通話チャネルの上り干渉波受信レベルU UPを記憶しているとし、当該セルに在圏する子局に通話要求が発生すると、当該親局は手順S1とS5 EXAMPLES channel allocation method of a cellular mobile communication device of an embodiment illustrating this invention, as shown in FIG. 1 (a), the parent in the fixed cellular network 4 shown in FIG. 7 (b) of the above prior art stations and stores the uplink interference wave reception level U UP periodically idle traffic channel, the call request to a child stations located in the cell occurs, the master station to the procedure S1 S5
とS7とS8で上記従来例の図5(a)に対応するほか、次のアルゴリズムを採る。 If S7 and other corresponding to FIGS. 5 (a) of the conventional example in S8, it takes the following algorithm. (1)移動するときは移動方向と速度を含む移動情報を検出する。 (1) When moving detects movement information including the moving direction and speed. 移動しないときは移動する子局が検出し報知する当該移動情報を受け取る(手順S2)。 When not move receives the movement information notifying detected slave station to be moved (Step S2). (2)移動しないまたはいずれかの方向に移動するかを区別する優先順序テーブルAまたはBに従い、最も優先順序の高い空き通話チャネルを選択する(手順S3またはS4)。 (2) in accordance with distinguishing priority table A or B or to non-moving or in either direction movement, selects the highest priority empty speech channel (steps S3 or S4). (3)選択する当該通話チャネルに対し、手順S5と同じに実行する(手順S6)。 (3) with respect to the call channel to be selected, the same to execute the steps S5 (Step S6).

【0012】上記実施例のセルラー移動体通信装置のチャネル割当て方法は、移動しない局と移動する局間や異なる移動方向の局間で発生する干渉の可能性を軽減するように通話チャネルを選択する方式(通話チャネルの再割当て回数を抑制するダイナミックチャネル割当て方式)を採る。 [0012] channel assignment method for a cellular mobile communication apparatus of the above embodiment selects a traffic channel to reduce the possibility of interference occurring between the stations and between different moving direction to move the station does not move stations taking method (dynamic channel allocation method of inhibiting the reassignment number of speech channels).

【0013】移動しないまたはいずれかの方向に移動するかを区別する優先順序テーブルAまたはBは図1 [0013] distinguishing priority table A or B or to non-moving or in either direction movement 1
(b)のように、システムに割り当てられる通話チャネルを共有し、たとえば1、2、・・・、99、100の若い順番(若番)またはたとえば100、99、・・ As in (b), to share the traffic channel allocated to the system, for example 1, 2, young order (youth number) of 99,100 or for example 100,99, ...
・、2、1の老い順番(老番)のチャネルから優先順序を割当てる。 · Assigns priority order from the channel of the old order of 2,1 (old turn). また図1(c)のように一定の法則たとえばmod(I*29、100)+1に従い、I=1、 Further in accordance with a predetermined law example mod (I * 29,100) +1 as shown in FIG. 1 (c), I = 1,
2、・・・、100またはI=100、99、・・・、 2, ..., 100 or I = 100,99, ···,
1の順で優先順序を割当ててもよい。 1 order by may be assigned a priority order. 優先順序が連続しないから、隣接チャネルを使用することが少なく当該チャネルから受ける干渉が少なくなる。 Since the priority order is not consecutive, interference from less the channel may use adjacent channels is reduced.

【0014】上記実施例は図7(b)の固定セルラー網4で、移動しないまたは移動する親局は優先順序テーブルAまたはBでチャネル割当てをするから、若番または老番のチャネルを優先的に使用する。 [0014] The above embodiment is a fixed cellular network 4 of FIG. 7 (b), since the master station to be not or move move to the channel assignment in the priority sequence table A or B, preferential channels youth number or old turn used to. 従って親局6aがP1の方向に移動しても互いに異なるチャネルを用いるから、互いに干渉することが少なくなる。 Thus since the master station 6a is used different channels be moved in the direction of P1, it becomes less likely to interfere with each other.

【0015】なお上記実施例で親局が移動しない(固定)またはいずれかの方向に移動するかを区別する優先順序テーブルを用いる場合について説明したが、図2 [0015] Although descriptions have been given of the case using the distinguishing priority table if the master station does not move (stationary) or moved in one direction or in the above embodiment, FIG. 2
(a)のように移動しない(固定)または一定の方向(たとえば東西南北方向)に移動するかを区別する優先順序テーブルを用いてもよい。 May be used to distinguish the priority sequence table should be moved to not move (stationary) or constant direction (e.g. north, south, east and west direction) as shown in (a). 干渉妨害を防げる。 Prevent the interference. 固定または北/東/南/西向き移動かを区別する優先順序テーブルAまたはB/C/D/Eは図2(b)のように、 Distinguishing the priority order table A or B / C / D / E or fixed or North / East / South / west movement as in FIG. 2 (b),
たとえば1、2、・・・、99、100の若番または一定の法則たとえばmod4=1、2、3、0を満足する、Bは97、93、・・・、9、5、1、Cは98、 For example 1, 2, satisfies the law e.g. mod4 = 1, 2, 3 younger number or constant of 99, 100, B is 97,93, ···, 9,5,1, C 98,
94、・・・、10、6、2、Dは99、95、・・ 94, ···, 10,6,2, D is 99,95, ...
・、11、7、3、Eは100、96、・・・、12、 ·, 11,7,3, E is 100,96, ..., 12,
8、4の老番のチャネルから優先順序を割当てる。 From old turn channels 8,4 assign priority. また図2(c)のように移動方向が上りと下りのように1次元に限定されている場合、固定または上り/下り方向移動かを区別する優先順序テーブルAまたはB′/C′を用い、たとえば1、2、・・・、99、100の若番または一定の法則たとえばmod2=1、0を満足する、 Also when the moving direction as shown in FIG. 2 (c) is limited to one-dimensional as upstream and downstream, using fixed or distinguishing the priority of uplink / or downstream movement sequence table A or B '/ C' , for example 1, 2, ..., to satisfy the law, for example, mod2 = 1,0 young number or constant of 99, 100,
B′は99、97、・・・、3、1、C′は100、9 B 'is 99,97, ···, 3,1, C' is 100,9
8、・・・、4、2の老番のチャネルから優先順序を割当ててもよい。 8, ... may be assigned a priority order from old turn channels 4,2. 上記実施例は図7(b)の固定セルラー網4で、親局6aと6bの移動する方向P1とP2が西向きのときはいずれも優先順序テーブルEでチャネル割当てをする。 The above embodiment is a fixed cellular network 4 of FIG. 7 (b), the direction P1 and P2 to move the master station 6a and 6b to the channel allocation in both the priority order table E when the west. 従って干渉妨害の発生しない十分な距離だけ離れていて、同じ方向の移動速度が大幅に違わなければ、干渉の増減がないから問題はない。 Therefore it away a sufficient distance causing no interference, if differ moving speed in the same direction is much, there is no problem because there is no increase or decrease of interference. また親局6bの移動する方向P3が北向きのときは優先順序テーブルB Also when the moving direction P3 master station 6b is northward priority table B
でチャネル割当てをする。 In the channel assignment. 従って相互の距離が接近しても異なるチャネルだから干渉は発生しない。 Thus interference because different channels mutual distance approaches does not occur.

【0016】また上記実施例で移動する親局がチャネル割当てをする場合について説明したが、移動する子局にチャネル割当てをする場合、図3のように手順S1のチャネル割当て開始後手順S2の移動情報判断前にハンドオフ(通話中にセルをまたがり移動する状態)と判断されるときは、手順S1aとS1bで当該子局が使用する通話チャネルに対し干渉波受信レベルの再測定をするようにしてもよい。 [0016] Although the master station to move in the above embodiments have described the case where the channel assignment, if the channels assigned to the slave station to move, the movement of the channel assignment after the start procedure S2 of steps S1 as in FIG. 3 when it is determined before the information determined to handoff (movement states span a cell during a call), as will be the remeasurement of the interference wave reception level with respect to communication channel used by the child station in step S1a and S1b it may be. 当該通話チャネルを引き続き使用できる可能性が高くなる。 Continuing possibility of using the communication channel is increased. 上記実施例は図4(a)でたとえば子局2aが通話をしながら親局1aのセル3aへ隣接セル3bから移動するハンドオフ時、親局1aは子局2 The above examples handoff moving from adjacent cells 3b to a cell 3a of the master station 1a with the FIGS. 4 (a), for example, slave station 2a is a call, the master station 1a is the slave stations 2
aの通話チャネルに対し、隣接セル3bに在圏中は上り干渉波として観測するから干渉波受信レベルを非常に大きく測定するのに対し、セル3aに在圏すると上り希望波として観測するから干渉波受信レベルを小さく測定する。 To speech channel of a, whereas in serving the neighbor cell 3b is measured very large interference wave reception level from observing the uplink interference wave, because observing the uplink desired wave when located in the cell 3a interference wave reception level smaller measure. また図4(b)で移動しないまたは移動する局は若番または老番の通話チャネルを優先的に使うことになり、たとえば隣接セル3bに在圏中はチャネル番号#9 The Figure 4 (b) do not move in or move to the station would use a speech channel of Wakaban or old turn preferentially, for example in serving the neighbor cell 3b is the channel number # 9
0の子局2aの干渉波受信レベルは実線で示すように非常に大きくなるのに対し、ハンドオフ判断時のチャネル再測定後は点線で示すように小さくなる。 Interference wave reception level of the slave station 2a of 0 whereas very large as shown by the solid line, after channel remeasurement of handoff determination is reduced as indicated by the dotted line.

【0017】また上記実施例で優先順序テーブルを移動状態で変える場合について説明したが、一般的に複数の各グループが使用する通話チャネルの相互干渉を避けたい場合に適用できるのはいうまでもない。 Further it has been described a case where varied moving state the priority sequence table in the above embodiment, it is needless to say applicable if you want to avoid commonly mutual interference communication channel used by each of a plurality of groups . たとえば共通の通話チャネルで移動体通信サービスをする事業者AとBの運用システムのセル構成や送受信特性が異なり相互干渉を避けたい場合、図1(b)と同様の優先順序テーブルを用意し、チャネル割当て対象の子局がAまたはB For example, if you want to avoid cell configuration and mutual interference different transmission and reception characteristics of the operational system operators A and B for the mobile communication services in a common communication channel, providing a priority table in the same manner as FIG. 1 (b), the slave station channel assignment target a or B
の運用システムを使用するときはテーブルAまたはBを使用するようにすれば、互いの運用システムを使用する子局間の干渉を軽減しかつ共通の通話チャネル割当てができる。 When the use the operational system when to use the table A or B, can alleviate and common traffic channel assignment interference between slave stations using each other's operational system.

【0018】 [0018]

【発明の効果】上記のようなこの発明のセルラー移動体通信装置のチャネル割当て方法では、移動しない局と移動する局間や異なる移動方向の局間で発生する干渉の可能性を軽減するように通話チャネルを選択する方式を採るから、従来のように簡単な分散制御で通信ごとにすべての通話チャネルから干渉妨害が発生しない通話チャネルを選択する方式に比べ、親局が通話チャネルの再割当てをする回数を抑制し親局の負荷を増大しない。 The channel allocation method in a cellular mobile communication system of the above-described present invention, according to the present invention, to mitigate the possibility of interference occurring between the stations and between different moving direction to move the station does not move stations since taking method of selecting a call channel, interference from all traffic channel for each communication in a conventional manner a simple distributed control is compared with a method of selecting a communication channel that does not occur, the master station is the reallocation of traffic channel It does not increase the load of suppressing master station a number of times. またチャネルの切り換えに伴う瞬断や割当て可能なチャネルが見つからない場合、通話中の強制切断を不要にしサービスの品質を向上する効果がある。 Also if you can not find the instantaneous interruption or assignable channels associated with the switching of the channel, the effect of improving the quality of eliminating the need for forced disconnection of a call service.

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

【図1】 この発明を示す一実施例のセルラー移動体通信装置のチャネル割当て方法のアルゴリズムを説明するフロー図と当該優先順序テーブルを説明する図。 FIG. 1 is a diagram illustrating a flow diagram and the priority order table describing the algorithm of the channel allocation method of a cellular mobile communication device for one implementation that illustrates the present invention.

【図2】 この発明を示す他の一実施例のアルゴリズムを説明するフロー図と当該優先順序テーブルを説明する図。 Figure 2 is a flow diagram and diagram for explaining the priority order table describing an algorithm of another embodiment showing the present invention.

【図3】 この発明を示す他の一実施例のアルゴリズムを説明するフロー図。 Figure 3 is a flow diagram illustrating an algorithm of another embodiment showing the present invention.

【図4】 図2に示す実施例の機能と効果を説明する図。 Figure 4 is a diagram illustrating a function and effect of the embodiment shown in FIG.

【図5】 従来例のセルラー移動体通信装置のチャネル割当て方法のアルゴリズムを説明するフロー図と当該システム構成図。 [5] Flow diagram and the system configuration diagram illustrating an algorithm of the channel allocation method in the prior art cellular mobile communication apparatus.

【図6】 図5に示す従来例の効果を説明する図。 6 is a diagram explaining an effect of the conventional example shown in FIG.

【図7】 図5に示す従来例の機能を説明する図。 7 is a diagram explaining the function of the conventional example shown in FIG.

【符号の説明】 DESCRIPTION OF SYMBOLS

1 親局、2 子局、3 親局のセル(無線ゾーン)、 1 master station, 2 slave station, the 3 master station cell (wireless zone),
4 固定セルラー網、5 移動する子局、6 移動する親局、6a 移動体、7 移動する親局のセル(無線ゾーン)、8aと8b システムAの親局と子局、9aと9b システムBの親局と子局。 4 fixed cellular network, 5 mobile slave stations, the master station, 6a moving body 6 moves, 7 cells of the parent station to move (radio zone), 8a and 8b system A master station and the slave station, 9a and 9b system B master station and the slave station of. なお図中、同一符号は同一または相当部分を示す。 Note in the figure, the same reference numerals denote the same or corresponding parts.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 森谷 陽一 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 ────────────────────────────────────────────────── ─── of the front page continued (72) inventor Yoichi Moriya, Chiyoda-ku, tokyo Marunouchi 2-chome No. 2 No. 3 Mitsubishi electric Co., Ltd. in

Claims (5)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 複数セル内の親局が互いに一定の順序に従い全通話チャネル中から希望波対干渉波電力比が所定閾値以上の当該通話チャネルを割当てるセルラー移動体通信装置のチャネル割当て方法において、当該局の移動状態ごとに優先順序を区別する複数の優先順序テーブルをもち、条件に応じ使用する当該優先順序テーブルを違える第1の手順を設けることを特徴とするセルラー移動体通信装置のチャネル割当て方法。 1. A channel allocation method of a signal to interference ratio from the total traffic channel master station in accordance with a fixed sequence to each other in multiple cell cellular mobile communication system for allocating the traffic channel over a predetermined threshold value, channel allocation of a cellular mobile communication apparatus characterized by each moving state of the station has a plurality of priority tables distinguish priority order, providing a first procedure made different the priority order table for use according to conditions Method.
  2. 【請求項2】 第1の手順で各優先順序テーブルがシステムに割当てられる通話チャネルを共有することを特徴とする請求項1記載のセルラー移動体通信装置のチャネル割当て方法。 2. A channel allocation method in a cellular mobile communication system according to claim 1, wherein each priority order table in the first steps to share a traffic channel allocated to the system.
  3. 【請求項3】 第1の手順で優先順序テーブルが親局もしくは子局の移動しないまたはいずれかの方向に移動する状態ごとに優先順序を区別することを特徴とする請求項1または2記載のセルラー移動体通信装置。 3. A according to claim 1 or 2, wherein the priority sequence table in the first step is characterized by distinguishing the priority order for each state to move in either direction or not move the master station or the slave station cellular mobile communication device.
  4. 【請求項4】 第1の手順で優先順序テーブルが親局もしくは子局の移動しないまたは移動方向を区別して一定の方向に移動する状態ごとに優先順序を区別することを特徴とする請求項1または2記載のセルラー移動体通信装置。 4. The method of claim 1, the priority order table in the first step is characterized by distinguishing the priority order for each state to move in a certain direction by distinguishing the non-moving or moving direction of the master station or the slave station or cellular mobile communication system according.
  5. 【請求項5】 隣接セル内の他の親局からハンドオフをする当該子局にチャネル割当てをする場合、当該子局が使用する通話チャネルに対し再測定をする干渉波受信レベルを判定に用いる第2の手順を設けることを特徴とする請求項1、2、3または4記載のセルラー移動体通信装置。 5. If the channel assigned to the child station to the handoff from another master station in the neighboring cell, the use in the determination of the interference wave reception level for the re-measured for speech channel child station uses cellular mobile communication apparatus according to claim 1, 2, 3 or 4, wherein the providing two steps.
JP18290395A 1995-07-19 1995-07-19 Channel allocation method in a cellular mobile communication device Expired - Fee Related JP3376768B2 (en)

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WO2000049823A1 (en) * 1999-02-16 2000-08-24 Ntt Mobile Communications Network, Inc. Radio line allocation judging method in mobile communication system and radio line controller
US7379489B2 (en) 2002-07-18 2008-05-27 Interdigital Technology Corporation Orthogonal variable spreading factor (OVSF) code assignment
JP2009500907A (en) * 2005-06-30 2009-01-08 アダプティクス、インク System and method for channel assignment to reduce radio network interference and increase capacity
US8228809B1 (en) 2007-12-21 2012-07-24 Adaptix, Inc. Intelligent mode switching in communication networks
JP2012244563A (en) * 2011-05-24 2012-12-10 Nippon Telegr & Teleph Corp <Ntt> Wireless communication method
US8396153B1 (en) 2004-12-07 2013-03-12 Adaptix, Inc. Cooperative MIMO in multicell wireless networks

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WO2000049823A1 (en) * 1999-02-16 2000-08-24 Ntt Mobile Communications Network, Inc. Radio line allocation judging method in mobile communication system and radio line controller
EP1075157A1 (en) * 1999-02-16 2001-02-07 Ntt Mobile Communications Network Inc. Radio line allocation judging method in mobile communication system and radio line controller
EP1075157A4 (en) * 1999-02-16 2005-09-14 Nippon Telegraph & Telephone Radio line allocation judging method in mobile communication system and radio line controller
US7379489B2 (en) 2002-07-18 2008-05-27 Interdigital Technology Corporation Orthogonal variable spreading factor (OVSF) code assignment
US7471713B2 (en) 2002-07-18 2008-12-30 Interdigital Technology Corporation Orthogonal variable spreading factor (OVSF) code assignment
US8396153B1 (en) 2004-12-07 2013-03-12 Adaptix, Inc. Cooperative MIMO in multicell wireless networks
US9756648B2 (en) 2005-06-30 2017-09-05 Microsoft Technology Licensing, Llc Systems and methods for making channel assignments to reduce interference and increase capacity of wireless networks
US9055598B2 (en) 2005-06-30 2015-06-09 Microsoft Technology Licensing, Llc Systems and methods for making channel assignments to reduce interference and increase capacity of wireless networks
JP2009500907A (en) * 2005-06-30 2009-01-08 アダプティクス、インク System and method for channel assignment to reduce radio network interference and increase capacity
US8897796B2 (en) 2005-06-30 2014-11-25 Microsoft Corporation Ordered list channel assignments
US9055597B2 (en) 2005-06-30 2015-06-09 Microsoft Technology Licensing, Llc Systems and methods for making channel assignments to reduce interference and increase capacity of wireless networks
US8228809B1 (en) 2007-12-21 2012-07-24 Adaptix, Inc. Intelligent mode switching in communication networks
JP2012244563A (en) * 2011-05-24 2012-12-10 Nippon Telegr & Teleph Corp <Ntt> Wireless communication method

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