本發明係關於一種行動通信系統中應用於異質網路架構之干擾協調方法，特別係指一種應用宏細胞與超微細胞間頻域資源及發射功率協調配置之方法，以利偏值平均信號強度伺服細胞選擇法於異質網路架構之實施，是一簡單、有效之細胞間干擾協調技術。The invention relates to a method for interference coordination applied to a heterogeneous network architecture in a mobile communication system, in particular to a method for coordinating the allocation of frequency domain resources and transmission power between macro cells and ultra-micro cells to benefit the biased average signal strength. Servo cell selection is a simple and effective inter-cell interference coordination technique for heterogeneous network architecture implementation.
第四代(4thgeneration，4G)行動通信系統，例如IEEE 802.16m及3GPP LTE-Advanced，都是採用以正交分頻多重接取(Orthogonal Frequency Division Multiple Access，OFDMA)為基礎的空中介面技術。在OFDMA系統中，細胞(cell)內每一用戶所使用的電波資源是正交(orthogonal)的，因此OFDMA系統一個重要特色及優點即不存在細胞內干擾(intra-cell interference)問題；但是當不同細胞或用戶機(User Equipment，UE)在同一時間利用相同頻率次通道(frequency subchannel)傳送訊息時，就會產生細胞間同頻干擾(inter-cell co-channel interference)，又簡稱為細胞間干擾(inter-cell interference，ICI)，使得細胞邊緣(cell edge)用戶之鏈路(link)品質劣化，細胞邊緣資料速率(cell edge data rate)難以提昇。根據國際電信聯盟(International Telecommunication Union，ITU)所發佈的未來IMT-Advanced/4G技術需求(technical requirements)，細胞邊緣資料速率已成為重要的性能指標，因此提供可接受之細胞邊緣資料速率，已成為4G系統設計關鍵。The fourth generation (4th generation, 4G) mobile communication systems, such as IEEE 802.16m and 3GPP LTE-Advanced, are based on an orthogonal frequency division multiple acess (Orthogonal Frequency Division Multiple Access, OFDMA ) based air interface technology . In an OFDMA system, the radio wave resources used by each user in a cell are orthogonal, so an important feature and advantage of the OFDMA system is that there is no intra-cell interference problem; When different cells or User Equipment (UE) transmit messages using the same frequency subchannel at the same time, inter-cell co-channel interference, also referred to as inter-cell interference. Inter-cell interference (ICI) degrades the quality of the link of the cell edge user, and the cell edge data rate is difficult to increase. According to the future IMT-Advanced/4G technical requirements issued by the International Telecommunication Union (ITU), the cell edge data rate has become an important performance indicator, thus providing an acceptable cell edge data rate, which has become The key to 4G system design.
傳統應用於行動通信系統之用戶伺服細胞選擇(serving cell selection)機制為：根據該用戶所量測到之(周圍)各個細胞平均信號強度(average signal strength)，選擇其中平均信號強度最強的細胞作為伺服細胞，此『平均信號強度』可以藉由估測參考信號接收功率(reference signal received power，RSRP)求得(參考信號亦稱為導引信號(pilot signal))。上述傳統伺服細胞選擇方法稱簡稱最大RSRP法(maximum RSRP)，運作概念可以用(1)式表示，其中RSRPi代表該用戶所量測到第i個細胞之參考信號接收功率(平均信號強度)、CellIDserving表示伺服細胞識別(identity)。參考信號接收功率係指一長期平均值，可用(2)式計算出，其中為P發射功率、L為路徑損失、S為遮蔽衰落(shadow fading)、A為天線增益(antenna gain)、下標j代表細胞(編號)j。The user servo cell selection mechanism conventionally applied to mobile communication systems is to select the cells with the highest average signal strength according to the average signal strength of each cell measured by the user. For servo cells, this "average signal strength" can be obtained by estimating the reference signal received power (RSRP) (the reference signal is also called a pilot signal). The above conventional servo cell selection method is referred to as themaximum RSRP method (maximum RSRP), and the operation concept can be expressed by the formula (1), whereinRSRPi represents the reference signal received power (average signal strength) of thei- th cell measured by the user.CellIDserving indicates servo cell identification. Reference signal received power refers to a long-term average value, which can be calculated by (2), whereP is the transmit power,L is the path loss,S is the shadow fading,A is the antenna gain, and the subscriptj stands for cell (number)j .
CellIDserving=arg max{i}{RSRPi} (1)CellIDserving =arg max{i } {RSRPi } (1)
RSRPj=Pj．Lj．Sj．Aj(2)RSRPj =Pj .Lj .Sj .Aj (2)
下世代行動通信系統(4G)擬以異質網路(heterogeneous network)架構來獲取細胞分裂(cell splitting)效果，以進一步提升系統容量。所謂『異質網路』架構係指在一高功率節點(high power node)(又稱為宏細胞(macro cell))涵蓋範圍中搭配多個低功率節點(low power node)之架構，其中低功率節點可以是超微細胞(pico cell)、中繼站(relay)或毫微微蜂巢式基地台(femtocell)。考慮一個宏細胞搭配超微細胞(macro-pico)之異質網路架構，因為超微細胞發射功率相對較低，且天線增益(antenna gain)相對較小，若採用傳統伺服細胞選擇機制(即最大RSRP法)，會使得超微細胞難以被挑選為用戶之伺服細胞，造成連結(attachment)至超微細胞的用戶數量太少，無法有效達到細胞分裂之效用與分擔宏細胞傳輸負載(loading)之目的。有鑑於此，下世代行動通信系統於異質網路架構採用偏值RSRP(biased-RSRP)法進行伺服細胞選擇，以增加超微細胞之服務用戶數。偏值平均信號強度伺服細胞選擇法係一種超微細胞伺服區域擴展(range expansion)技術，其利用偏值來彌補宏細胞與超微細胞之間的接收功率差距，主要運作概念為用戶量測周圍各個細胞(包括宏細胞及超微細胞)平均信號強度(即RSRP值)後，將超微細胞之平均信號強度加入一偏值(bias)。偏值平均信號強度伺服細胞選擇法之用作可以(3)式表示，其中biasi代表第i個細胞之偏值，而超微細胞之偏值為一非零正值、宏細胞之偏值則為0。請參閱圖一，在傳統的最大RSRP伺服細胞選擇法下，超微細胞之伺服區域為黃色區塊11所示，但在使用偏值平均信號強度伺服細胞選擇法後，可將超微細胞之伺服區域再納入綠色區塊12部分(亦即區域擴展)。The next generation mobile communication system (4G) plans to use a heterogeneous network architecture to obtain cell splitting effects to further increase system capacity. The so-called "heterogeneous network" architecture refers to an architecture with multiple low power nodes in the coverage of a high power node (also known as a macro cell), where low power The node can be a pico cell, a relay, or a femtocell. Consider a heterogeneous network architecture with macro cells and macro-pico, because the ultra-micro cell emission power is relatively low, and the antenna gain is relatively small, if the traditional servo cell selection mechanism (ie maximum The RSRP method makes it difficult for the ultra-micro cells to be selected as the user's servo cells, and the number of users attaching to the ultra-micro cells is too small to effectively achieve the effect of cell division and share the macro cell transmission load. purpose. In view of this, the next generation mobile communication system uses thebiased RSRP (biased-RSRP) method for servo cell selection in heterogeneous network architecture to increase the number of service users of ultramicro cells. The biased average signal strength servo cell selection method is a kind of ultra-cell servo area expansion technology, which uses the bias value to compensate for the difference in receiving power between macro cells and ultra-micro cells. The main operational concept is user measurement around. After the average signal intensity (i.e., RSRP value) of each cell (including macro cells and ultramicro cells), the average signal intensity of the ultramicro cells is added to a bias. The partial average signal intensity servo cell selection method can be expressed as (3), wherebiasi represents the bias value of thei- th cell, and the bias value of the ultra-micro cell is a non-zero positive value, the macro cell bias value. Then it is 0. Referring to Figure 1, under the traditional maximum RSRP servo cell selection method, the servo field of the ultramicro cell is shown by the yellow block 11, but after using the partial average signal strength servo cell selection method, the ultramicro cell can be The servo area is then incorporated into the green block 12 (ie, the area is expanded).
CellIDserving=arg max{i}{RSRPi+biasi} (3)CellIDserving =arg max{i } {RSRPi +biasi } (3)
在異質網路架構中實現偏值平均信號強度伺服細胞選擇法，若宏細胞與超微細胞使用相同頻率通道(frequency channel)(此情形稱為同頻(co-channel)佈建)，則這些因為運用區域擴展方法(即偏值平均信號強度伺服細胞選擇法)而改選擇超微細胞為伺服細胞的用戶，會受到來自平均信號強度較強的宏細胞干擾，導致其信號品質低劣，甚至無法正常通信，這情形在偏值大時尤其明顯。因此，偏值平均信號強度伺服細胞選擇法雖然能有效提升超微細胞連結用戶數，實現宏細胞負載減輕的效果，但卻面臨整體系統容量無法有效提升、細胞邊緣資料速率降低與無法傳輸(通信)的用戶比例增加等問題。Implementing a biased average signal strength servo cell selection method in a heterogeneous network architecture. If macro cells and ultramicro cells use the same frequency channel (this case is called co-channel deployment), these Because users who use the regional expansion method (ie, the partial average signal strength servo cell selection method) to change the selection of ultra-micro cells to servo cells will be interfered by macro cells with strong average signal intensity, resulting in poor signal quality or even failure. Normal communication, this situation is especially noticeable when the bias value is large. Therefore, although the partial average signal strength servo cell selection method can effectively increase the number of users connected to the ultra-micro cell and achieve the effect of reducing the macro cell load, it faces the inability of the overall system capacity to be effectively improved, and the cell edge data rate is reduced and cannot be transmitted (communication). ) The proportion of users has increased and so on.
由此可見，上述習用物品仍有諸多缺失，實非一良善之設計者，而亟待加以改良。It can be seen that there are still many shortcomings in the above-mentioned items, which is not a good designer, but it is urgent to addTo improve.
本案發明人鑑於上述習用方法所衍生的各項缺點，乃亟思加以改良創新，並經多年苦心孤詣潛心研究後，終於成功研發完成本件行動通信系統中應用於異質網路架構之干擾協調技術。In view of the shortcomings derived from the above-mentioned conventional methods, the inventors of the present invention have improved and innovated, and after years of painstaking research, they finally succeeded in researching and developing the interference coordination technology applied to the heterogeneous network architecture in the mobile communication system.
本發明所提供之行動通信系統中應用於異質網路架構之干擾協調方法，與前述引證案及其他習用技術相互比較時，更具有下列之優點：The interference coordination method applied to the heterogeneous network architecture in the mobile communication system provided by the present invention has the following advantages when compared with the foregoing citations and other conventional technologies:
1.本發明可提供較佳的細胞邊緣鏈路品質與細胞邊緣資料速率，實現細胞涵蓋範圍內較均勻的用戶資料速率分佈。1. The present invention can provide better cell edge link quality and cell edge data rate, and achieve a more uniform user data rate distribution within the cell coverage.
2.本發明可降低無法傳輸(通信)的用戶比例，使得涵蓋空洞(coverage hole)之產生減少，有效解決實際異質網路佈建時所遭遇的涵蓋問題。2. The invention can reduce the proportion of users who cannot transmit (communicate), so that the coverage of coverage holes is reduced, and the coverage problems encountered in the actual heterogeneous network deployment are effectively solved.
3.本發明可經由適當且動態之參數設定(如功率係數、宏細胞中心子頻段之頻寬)，可有效提升整體系統容量。3. The present invention can effectively increase the overall system capacity through appropriate and dynamic parameter settings (such as power factor, macrocell center sub-band bandwidth).
上列詳細說明係針對本發明之一可行實施例之具體說明，惟該實施例並非用以限制本發明之專利範圍，凡未脫離本發明技藝精神所為之等效實施或變更，均應包含於本案之專利範圍中。The detailed description of the preferred embodiments of the present invention is intended to be limited to the scope of the invention, and is not intended to limit the scope of the invention. The patent scope of this case.
綜上所述，本案不但在空間型態上確屬創新，並能較習用物品增進上述多項功效，應已充分符合新穎性及進步性之法定發明專利要件，爰依法提出申請，懇請 貴局核准本件發明專利申請案，以勵發明，至感德便。In summary, this case is not only innovative in terms of space type, but also can enhance the above-mentioned multiple functions compared with the customary items. It should fully meet the statutory invention patent requirements of novelty and progressiveness, and apply for it according to law. This invention patent application, in order to invent invention, to the sense of virtue.
本發明之目的即在於提供一種行動通信系統中應用於異質網路架構之干擾協調方法，有效解決在異質網路架構實施偏值平均信號強度伺服細胞選擇法時所產生細胞邊緣資料速率降低與無法傳輸(通信)的用戶比例增加之問題，並同時能維持卓越的系統效能。The object of the present invention is to provide an interference coordination method applied to a heterogeneous network architecture in a mobile communication system, which effectively solves the problem of implementing a partial average signal strength servo cell in a heterogeneous network architecture.The problem of reduced cell edge data rate and increased proportion of users unable to transmit (communicate) during the selection process, while maintaining excellent system performance.
可達成上述發明目的之行動通信系統中應用於異質網路架構之干擾協調方法，係結合：(1)利用偏值平均信號強度伺服細胞選擇法來選擇用戶之伺服細胞，再將用戶區分為宏細胞一般用戶、宏細胞中心用戶、超微細胞一般用戶及超微細胞邊緣用戶；(2)將宏細胞可傳送的頻率資源配置成通用子頻段與中心子頻段，而超微細胞可傳送的頻率資源配置成通用子頻段與邊緣子頻段，其中宏細胞中心子頻段具有傳送功率較低的特點，且其頻段大小可動態調整；(3)當用戶有資料傳送之基本運作原則為：超微細胞邊緣用戶使用邊緣子頻段之頻率資源進行資料傳送，以提升鏈路(link)信號品質；宏細胞中心用戶使用中心子頻段之頻率資源進行資料傳送，使得頻率資源能有效運用。The interference coordination method applied to the heterogeneous network architecture in the mobile communication system capable of achieving the above object is combined with: (1) using the bias average signal strength servo cell selection method to select the user's servo cell, and then dividing the user into macros. Cell general users, macro cell center users, ultra-micro cell general users and ultra-micro cell edge users; (2) Configuring the frequency resources that macro cells can transmit into universal sub-bands and central sub-bands, and the frequencies that ultra-micro cells can transmit The resources are configured into a universal sub-band and an edge sub-band, wherein the macro cell center sub-band has the characteristics of low transmission power, and the frequency band can be dynamically adjusted; (3) when the user has the basic operation principle of data transmission: ultra-micro cell Edge users use the frequency resources of the edge sub-band for data transmission to improve the link signal quality; the macro cell center users use the frequency resources of the central sub-band for data transmission, so that the frequency resources can be effectively used.
如圖二所示，為本發明所提供之行動通信系統中應用於異質網路架構之干擾協調方法之頻域資源配置架構，係包括：一宏細胞通用子頻段(common subband)21，係用以傳送宏細胞一般用戶資料，在此所謂一般用戶可以是宏細胞中全部用戶或扣除邊緣用戶後之所有用戶。As shown in FIG. 2, the frequency domain resource configuration architecture of the interference coordination method applied to the heterogeneous network architecture in the mobile communication system provided by the present invention includes: a macro cell common subband 21, which is used by In order to transmit macro cell general user data, the so-called general user can be all users in the macro cell or all users after deducting the edge user.
一宏細胞中心子頻段(center subband)22，又稱為保護頻段(protected band)，係用以較低之傳送功率傳送宏細胞中心用戶資料，所謂中心用戶係指宏細胞中信號品質較佳(大)之用戶，其中信號品質指標可以是訊號干擾雜訊比(signal to interference plus noise ratio，SINR)值，或是平均信號強度(即RSRP)值。A macro cell center subband 22, also known as a guard band (protected)Band) is used to transmit macro cell center user data with lower transmission power. The so-called central user refers to users with better signal quality in macro cells, wherein the signal quality indicator can be signal interference noise ratio (signal to The value of the interference plus noise ratio (SINR) or the average signal strength (ie, RSRP).
一超微細胞通用子頻段23，係用以傳送超微細胞一般用戶資資料，在此所謂一般用戶係指超微細胞中扣除邊緣用戶後之所有用戶。A super-cell universal sub-band 23 is used to transmit the general user information of the ultra-micro cell, and the so-called general user refers to all users after deducting the edge user in the ultra-micro cell.
一超微細胞邊緣子頻段(edge subband)24，係用以傳送超微細胞邊緣用戶資資料，在此邊緣用戶係指超微細胞中信號品質較差之用戶，其中信號品質指標可以是訊號干擾雜訊比值或是平均信號強度值。An ultra-micro cell edge subband 24 is used to transmit the information of the ultra-micro cell edge user. The edge user refers to the user with poor signal quality in the ultra-micro cell, wherein the signal quality indicator can be signal interference. The ratio or average signal strength value.
一般而言，因為運用區域擴展方法(即偏值平均信號強度伺服細胞選擇法)而改選擇超微細胞為伺服細胞的用戶(稱為超微細胞區域擴展用戶)會具有較差之信號品質，因此一個簡單的實現方法便是將超微細胞區域擴展用戶歸類為超微細胞之邊緣用戶。在此架構中，超微細胞邊緣子頻段24之大小設定與宏細胞中心子頻段22一樣。當然，倘若超微細胞沒有邊緣用戶時，一般用戶亦可以使用邊緣子頻段24。In general, users who use the region expansion method (ie, the biased average signal strength servo cell selection method) to change the selection of ultra-micro cells to servo cells (called ultra-microcell-area extension users) have poor signal quality. A simple implementation is to classify users of the ultra-micro cell area as users of the edge of the ultra-micro cell. In this architecture, the ultra-micro cell edge sub-band 24 is sized the same as the macrocell center sub-band 22. Of course, if the ultra-micro cell has no edge users, the average user can also use the edge sub-band 24.
請參閱圖二，宏細胞中心子頻段22之傳送功率(αP)會小於宏細胞通用子頻段之傳送功率(P)，其中功率係數α範圍為0α<1且可動態調整以達到最大效益。若α=0，表示宏細胞在中心子頻段22中不傳送資料，此時宏細胞對超微細胞邊緣子頻段24之干擾為零，對超微細胞邊緣用戶而言保護效果最佳。在此架構中，宏細胞中心子頻段22所佔之頻寬大小(或佔所有頻寬之比例)設定可以依狀況動態調整，一個簡單的作法可根據某地區超微細胞邊緣用戶的數量和所有用戶數量的比例進行調整。也就是說，若超微細胞邊緣用戶的數量較多，則將宏細胞中心子頻段22增大；反之若超微細胞邊緣用戶占少數，則將宏細胞中心子頻段22縮小。Referring to FIG. 2, the transmission power (αP ) of the macro cell center sub-band 22 is smaller than the transmission power (P ) of the macro cell universal sub-band, wherein the power coefficientα ranges from 0.α <1 and can be dynamically adjusted for maximum benefit. Ifα =0, it means that the macro cells do not transmit data in the central sub-band 22, and the interference of the macro cells on the ultra-micro cell edge sub-band 24 is zero, and the protection effect is optimal for the ultra-micro cell edge users. In this architecture, the bandwidth of the macrocell center sub-band 22 (or the ratio of all bandwidths) can be dynamically adjusted according to the situation. A simple method can be based on the number of users and the total number of ultra-cell edge users in a certain area. The proportion of the number of users is adjusted. That is to say, if the number of users of the ultra-micro cell edge is large, the macro cell center sub-band 22 is increased; otherwise, if the ultra-micro cell edge user is a minority, the macro cell center sub-band 22 is reduced.
如圖三所示，為本發明所提供之行動通信系統中應用於異質網路架構之干擾協調技術之操作流程圖。首先用戶量測周圍各個細胞之平均信號強度並回報給網路端30。接著在網路端由檢測器31判斷此UE為宏細胞用戶或超微細胞用戶，如下式所示：RSRPP+bias>RSRPM(4)As shown in FIG. 3, it is an operational flowchart of an interference coordination technology applied to a heterogeneous network architecture in a mobile communication system provided by the present invention. First, the user measures the average signal strength of each surrounding cell and reports it to the network 30. Then, at the network side, the detector 31 judges that the UE is a macro cell user or a microcell user, as shown in the following equation:RSRPP +bias >RSRPM (4)
其中RSRPP表示該用戶所量測到超微細胞中平均信號強度最大的超微細胞P，而RSRPM表示該用戶所量測到宏細胞中平均信號強度最大的宏細胞M，而bias值為一大於0之正值。此偏值bias值可以根據不同電波環境做調整，每個超微細胞之bias值可以不同，以使整體系統效能達到最佳。若(4)式成立，則選擇超微細胞為該用戶之伺服細胞32。接著由檢測器33判斷此用戶為超微細胞一般用戶或邊緣用戶。若該用戶之信號品質指標(可依據SINR值或RSRP值)小於一預設臨界值(threshold)，則將此用戶歸類為邊緣用戶，反之，則將該用戶其歸類為一般用戶。若該用戶為邊緣用戶且有資料待傳時，超微細胞會配置邊緣子頻段之頻譜資源給該用戶，並進行傳送。由於宏細胞在中心子頻段22之傳送功率較小，因此降低對超微細胞邊緣用戶的干擾，使得於超微細胞邊緣子頻段24之傳送之邊緣用戶信號品質得以大幅改善，進而使得系統之細胞邊緣資料速率得以有效提升，同時無法傳輸的用戶比例亦可降低。Wherein the userRSRPP represents the measured signal strength average Ultracytochemical maximum UltracytochemicalP, while theRSRPM represents the user to the macro cell measured average signal strength of the macro cell maximumM, with a value ofbias A positive value greater than zero. The bias value of thebias value can be adjusted according to different radio wave environments, and thebias value of each of the ultrafine cells can be different to optimize the overall system performance. If equation (4) holds, the ultramicrocell is selected as the servo cell 32 of the user. The user 33 is then determined by the detector 33 to be a super-cell general user or an edge user. If the user's signal quality indicator (which may be based on the SINR value or the RSRP value) is less than a predetermined threshold (threshold), the user is classified as an edge user, and vice versa, the user is classified as a general user. If the user is an edge user and there is data to be transmitted, the ultramicro cell configures the spectrum resource of the edge sub-band to the user and transmits the data. Since the transmission power of the macro cells in the central sub-band 22 is small, the interference to the users of the ultra-micro cell edges is reduced, so that the edge user signal quality of the transmission of the ultra-micro cell edge sub-band 24 is greatly improved, thereby making the cells of the system The edge data rate can be effectively increased, and the proportion of users who cannot transmit at the same time can be reduced.
若(4)式不成立，則選擇宏細胞為該用戶之伺服細胞36。接著由檢測器37判斷此用戶為宏細胞一般用戶或中心用戶，若該用戶之信號品質指標(可依據SINR值或RSRP值)大於一預設臨界值，則將此用戶歸類為中心用戶；反之，則將其歸類為一般用戶。若該用戶為中心用戶且有資料待傳時，宏細胞會優先配置中心子頻段之頻率資源給該用戶，並進行傳送。由於中心用戶距離基站較近，因此以較低之功率傳送信號時能維持適當之信號品質，而且當中心子頻段處於高負載或該中心用戶資料傳輸需求高時，可以彈性將通用子頻段之頻率資源配置給該中心用戶。If the formula (4) does not hold, the macro cell is selected as the servo cell 36 of the user. Then, the detector 37 determines that the user is a macro cell general user or a central user, if the user's signal quality indicator (mayIf the SINR value or the RSRP value is greater than a predetermined threshold, the user is classified as a central user; otherwise, it is classified as a general user. If the user is a central user and there is data to be transmitted, the macro cell preferentially configures the frequency resource of the central sub-band to the user and transmits it. Since the central user is closer to the base station, the signal quality can be maintained when the signal is transmitted at a lower power, and the frequency of the universal sub-band can be flexibly when the central sub-band is at a high load or the central user data transmission demand is high. The resource is configured to the central user.
11‧‧‧超微細胞原本伺服區域11‧‧‧ Ultramicrocell original servo area
12‧‧‧超微細胞區域擴展後之伺服區域12‧‧‧Servo area after expansion of the ultra-micro cell area
21‧‧‧宏細胞通用子頻段21‧‧‧ macro cell universal sub-band
22‧‧‧宏細胞中心子頻段22‧‧‧Acer cell sub-band
23‧‧‧超微細胞通用子頻段23‧‧‧Ultracell universal subband
24‧‧‧超微細胞邊緣子頻段24‧‧‧ Ultra-micro cell edge sub-band
請參閱有關本發明之詳細說明及其附圖，將可進一步瞭解本發明之技術內容及其目的功效；有關附圖為：圖一為習知宏細胞-超微細胞異質網路細胞涵蓋區示意圖；圖二為本發明行動通信系統中應用於異質網路架構之干擾協調技術之頻域資源配置示意圖；以及圖三為本發明行動通信系統中應用於異質網路架構之干擾協調技術之操作流程圖。The detailed description of the present invention and the accompanying drawings will be further understood, and the technical contents of the present invention and the effects of the objects of the present invention can be further understood; the related drawings are: FIG. 1 is a schematic view of a conventional macro cell-ultracellular heterogeneous network cell covering area; 2 is a schematic diagram of frequency domain resource configuration of an interference coordination technology applied to a heterogeneous network architecture in a mobile communication system according to the present invention; and FIG. 3 is an operation flowchart of an interference coordination technology applied to a heterogeneous network architecture in the mobile communication system of the present invention. .
11‧‧‧超微細胞原本伺服區域11‧‧‧ Ultramicrocell original servo area
12‧‧‧超微細胞區域擴展後之伺服區域12‧‧‧Servo area after expansion of the ultra-micro cell area
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