TWI578827B - Method of Main Carrier Configuration in Multi - carrier Multi - band Wireless Communication System - Google Patents
Method of Main Carrier Configuration in Multi - carrier Multi - band Wireless Communication System Download PDFInfo
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本發明為一平均分佈無線通信系統頻寬方法，特別為一種多載波多頻段無線通信系統中主載波配置之方法。 The invention relates to an average distributed wireless communication system bandwidth method, in particular to a method for configuring a primary carrier in a multi-carrier multi-band wireless communication system.
隨著行動網路數據量需求的快速成長，電信運營商以更大的頻寬、更多個載波提供用戶更好的服務已成為現在及未來的趨勢。但目前的頻寬分配上面臨一些問題，例如依區域內相同基地台中，低頻段載波因在空中的衰減較少導致用戶接收的信號強度高於其他載波，導致用戶選擇主載波時大多集中在低頻段，而造成用戶負載不均衡問題，反而令通訊品質變差，也會使低頻段載波的用戶數負載遠大於高頻段，而無法讓擁有多個載波的通信系統發揮最佳效能，在未來若更大量的終端數同時接取時，則此問題會更加放大及嚴重。 With the rapid growth of data demand for mobile networks, it has become a trend now and in the future for telecom operators to provide better services to users with greater bandwidth and more carriers. However, there are some problems in the current bandwidth allocation. For example, in the same base station in the same area, the low-band carrier has less signal attenuation than other carriers due to less attenuation in the air, and the user mostly concentrates on the main carrier when selecting the main carrier. The frequency band causes the user load imbalance problem, but the communication quality is deteriorated, and the user load of the low-band carrier is much larger than the high frequency band, and the communication system with multiple carriers cannot be optimally performed in the future. When a larger number of terminals are simultaneously picked up, the problem is more magnified and severe.
本案發明人鑑於上述習用方式所衍生的各項缺點，乃亟思加以改良創新，並經苦心孤詣潛心研究後，終於成功研發完成一種多載波多頻段無線通信系統中主載波配置之方法。 In view of the shortcomings derived from the above-mentioned conventional methods, the inventors of the present invention have improved and innovated, and after painstaking research, finally successfully developed a method for configuring the main carrier in a multi-carrier multi-band wireless communication system.
有見於上述現有技術上的缺點，本發明提供一種能應用於多 載波多頻段無線通信系統中主載波配置之方法，先定義符合用戶做為主載波的條件，當用戶有多主載波可以選擇時，則依照各載波的頻寬、該載波被當成主載波及輔載波的用戶數，電信運營商的策略指派該用戶至最適當的載波，進而均衡各載波用戶負載，有效提升系統資源的運用及提升系統效能。 In view of the above disadvantages of the prior art, the present invention provides an application that can be applied to many The method for configuring the primary carrier in the carrier multi-band wireless communication system first defines the condition that the user is the primary carrier. When the user has multiple primary carriers, the carrier is used as the primary carrier and the secondary carrier according to the bandwidth of each carrier. The number of users of the carrier, the strategy of the telecom operator assigns the user to the most appropriate carrier, thereby balancing the load of each carrier user, effectively improving the utilization of system resources and improving system performance.
本發明提供一種多載波多頻段無線通信系統中主載波配置之方法，步驟如下：在一區域內利用一觀測模組偵測該區域內的複數個載波之信號強度是否超過一預設強度門檻值，若超過該預設強度門檻值的各該載波之數量小於或等於1時，則該主載波選擇模組將該預設強度門檻值最大者為新設定主載波；利用一篩選模組對超過該預設強度門檻值之各該載波進行篩選，判斷各該載波是否超過一預設信號干擾比，若超過該預設信號干擾比的各該載波之數量小於或等於1時，則該主載波選擇模組將該預設信號干擾比最大者為新設定主載波；利用一計算加權模組記算超過該預設信號干擾比之各該載波之負載，其中該計算加權模組依據公式為：Carrierk Loading=(Usersk pCell+Usersk sCell×Wk sCell)/該載波頻寬；該記算加權模組對各該載波進行一信號干擾比加權，其中該記算加權模組係依據公式為：Carrierk Loading×Wk UE_SINR；該記算加權模組對各該載波進行一客製化加權，其中該記算加權模組係依
據公式：(Carrierk Loading×Wk UE_SINR)×Wk option；各該載波經過該信號干擾比加權及該客製化加權後，產生對應複數個加權載波值；以及一主載波選擇模組係依據公式：
其中，總共K個主載波可供選取，Carrierk Loading為第k個該載波的負載，Usersk pCell為第k個載波做為一主載波之數量，Usersk sCell為將第k個載波做為一輔載波之數量，Wk sCell為Usersk sCell的權重調整常數，Wk UE_SINR為第k個載波信號品質的權重調整常數，Wk option為第k個載波信號品質的客製化權重調整常數，以及k為大於1之正整數。 Among them, a total of K main carriers are available for selection, Carrier k Loading is the load of the kth carrier, Users k pCell is the number of the kth carrier as a primary carrier, and Users k sCell is the kth carrier. The number of one secondary carrier, W k sCell is the weight adjustment constant of Users k sCell , W k UE_SINR is the weight adjustment constant of the kth carrier signal quality, and W k option is the customized weight adjustment constant of the kth carrier signal quality And k is a positive integer greater than one.
本發明之一種多載波多頻段無線通信系統中主載波配置之方法相較於其他習知技術而言，不僅提供一個多載波無線通信系統中主載波配置之方法，並提出同時依據各載波頻寬、承載主載波用戶數、承載輔載波用戶數、用戶在各載波的信號品質等參數調整並指派用戶所適用的主載波。最終用戶的主載波不僅可以符合作為主載波的條件，對系統而言又可以最適當的調度讓各載波的用戶數負載均衡。 Compared with other prior art, the method for configuring a primary carrier in a multi-carrier multi-band wireless communication system of the present invention not only provides a method for configuring a primary carrier in a multi-carrier wireless communication system, but also proposes to simultaneously base each carrier bandwidth. The parameters of the number of users carrying the primary carrier, the number of users carrying the secondary carrier, and the signal quality of the user in each carrier are adjusted and the primary carrier to which the user applies is assigned. The end user's primary carrier can not only meet the conditions as the primary carrier, but also the most appropriate scheduling for the system to load balance the number of users of each carrier.
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 more customary. To enhance the above-mentioned multiple functions, the product should fully comply with the statutory invention patent requirements of novelty and progressiveness. If you apply in accordance with the law, you are requested to approve the application for the invention patent to encourage the invention.
S01~S09‧‧‧步驟流程 S01~S09‧‧‧Step process
100‧‧‧基地台 100‧‧‧Base Station
110‧‧‧載波一 110‧‧‧ Carrier One
120‧‧‧載波二 120‧‧‧ Carrier 2
130‧‧‧載波三 130‧‧‧Carrier III
200‧‧‧用戶 200‧‧‧ users
300‧‧‧用戶 300‧‧‧Users
第1圖為本發明之多載波多頻段無線通信系統中主載波配置之方法流程圖。 1 is a flow chart of a method for configuring a primary carrier in a multi-carrier multi-band wireless communication system of the present invention.
第2圖為本發明之多載波多頻段無線通信系統中主載波配置之實施示意圖。 2 is a schematic diagram of implementation of a primary carrier configuration in a multi-carrier multi-band wireless communication system of the present invention.
為利 貴審查委員了解本發明之技術特徵、內容與優點及其所能達到之功效，茲將本發明配合附圖，並以實施例之表達形式詳細說明如下，而其中所使用之圖式，其主旨僅為示意及輔助說明書之用，未必為本發明實施後之真實比例與精準配置，故不應就所附之圖式的比例與配置關係解讀、侷限本發明於實際實施上的權利範圍，合先敘明。 The technical features, contents, and advantages of the present invention, as well as the advantages thereof, can be understood by the reviewing committee, and the present invention will be described in detail with reference to the accompanying drawings. The subject matter is only for the purpose of illustration and description. It is not intended to be a true proportion and precise configuration after the implementation of the present invention. Therefore, the scope and configuration relationship of the attached drawings should not be interpreted or limited. First described.
請參閱第1圖，如圖所示，為本發明之一種多載波多頻段無線通信系統中主載波配置之方法流程圖，步驟如下：S01：在一區域內利用一觀測模組偵測該區域內的複數個載波之信號強度是否超過一預設強度門檻值；S02：利用一篩選模組對超過該預設強度門檻值之各該載波進行篩選，判斷各該載波是否超過一預設信號干擾比； S03：利用一計算加權模組記算超過該預設信號干擾比之各該載波之負載；S04：該記算加權模組對各該載波進行一信號干擾比加權；S05：該記算加權模組對各該載波進行一客製化加權；S06：各該載波經過該信號干擾比加權及該客製化加權後，產生對應複數個加權載波值；S07：一主載波選擇模組將該加權載波值最低之該載波設為一新設定主載波；S08：其中若超過該預設強度門檻值的各該載波之數量小於1或等於1時，則該主載波選擇模組將該預設強度門檻值最大者為新設定主載波；以及S09：其中若超過該預設信號干擾比的各該載波之數量小於1或等於1時，則該主載波選擇模組將該預設信號干擾比最大者為新設定主載波。 Please refer to FIG. 1 , which is a flow chart of a method for configuring a primary carrier in a multi-carrier multi-band wireless communication system according to the present invention. The steps are as follows: S01: detecting an area by using an observation module in an area. Whether the signal strength of the plurality of carriers exceeds a preset strength threshold; S02: using a screening module to filter each carrier exceeding the preset strength threshold to determine whether each carrier exceeds a predetermined signal interference S03: using a calculation weighting module to calculate the load of each carrier exceeding the preset signal interference ratio; S04: the calculation weighting module performs a signal interference ratio weighting on each of the carriers; S05: the calculation The weighting module performs a customized weighting on each of the carriers; S06: each of the carriers generates a corresponding plurality of weighted carrier values after the signal interference ratio weighting and the customized weighting; S07: a primary carrier selection module The carrier with the lowest weighted carrier value is set as a newly set primary carrier; S08: wherein if the number of the carriers exceeding the preset strength threshold is less than 1 or equal to 1, the primary carrier selection module will The preset maximum strength threshold is the newly set primary carrier; and S09: wherein if the number of the carriers exceeding the preset signal interference ratio is less than 1 or equal to 1, the primary carrier selection module presets The signal to interference ratio is the newest set primary carrier.
其中，該計算加權模組依據公式：Carrierk Loading=(Usersk pCell+Usersk sCell×Wk sCell)/該載波頻寬，記算超過該預設信號干擾比之各該載波之負載。 The calculation weighting module calculates the load of each carrier exceeding the preset signal-to-interference ratio according to the formula: Carrier k Loading = (Users k pCell + Users k sCell × W k sCell ) / the carrier bandwidth.
其中，該記算加權模組係依據公式：Carrierk Loading×Wk UE_SINR，對各該載波進行該信號干擾比加權。 The calculation weighting module performs the signal interference ratio weighting on each of the carriers according to the formula: Carrier k Loading × W k UE_SINR .
其中，該記算加權模組係依據公式：(Carrierk Loading×Wk UE_SINR)×Wk option，對各該載波進行該客製化加權。 The calculation weighting module performs the customization weighting on each of the carriers according to the formula: (Carrier k Loading × W k UE_SINR ) × W k option .
其中，該主載波選擇模組係依據公式：，選擇將該加權載波值最低之該載波設為該新設定主載波。 Wherein, the primary carrier selection module is based on a formula: And selecting the carrier with the lowest weighted carrier value as the newly set primary carrier.
其中，總共K個主載波可供選取，Carrierk Loading為第k個該載波的負載，Usersk pCell為第k個載波做為一主載波之數量，Usersk sCell為將第k個載波做為一輔載波之數量，Wk sCell為Usersk sCell的權重調整常數，Wk UE_SINR為第k個載波信號品質的權重調整常數，Wk option為第k個載波信號品質的客製化權重調整常數，以及k為大於1之正整數。 Among them, a total of K main carriers are available for selection, Carrier k Loading is the load of the kth carrier, Users k pCell is the number of the kth carrier as a primary carrier, and Users k sCell is the kth carrier. The number of one secondary carrier, W k sCell is the weight adjustment constant of Users k sCell , W k UE_SINR is the weight adjustment constant of the kth carrier signal quality, and W k option is the customized weight adjustment constant of the kth carrier signal quality And k is a positive integer greater than one.
請參閱第2圖，如圖所示，為本發明之多載波多頻段無線通信系統中主載波配置之實施示意圖，如圖所示，基地台100同時有三個操作載波，載波涵蓋範圍分別為載波一110、載波二120及載波三130。由於無線電傳播特性為低頻時信號傳遞的衰減較高頻來的少，導致載波一110的信號涵蓋最廣，即使是與載波二120和載波三130共同涵蓋的區域對用戶來說接受到載波一的信號強度還是最大，導致幾乎所有用戶都會接取到載波一，造成各載波用戶負載不均衡的情況。 Please refer to FIG. 2, which is a schematic diagram of the implementation of the primary carrier configuration in the multi-carrier multi-band wireless communication system of the present invention. As shown in the figure, the base station 100 has three operational carriers at the same time, and the carrier coverage ranges from carrier to carrier. One 110, carrier two 120 and carrier three 130. Since the attenuation of the signal transmission at a low frequency is less frequently due to the radio propagation characteristics, the signal of the carrier-110 is the most widely covered, even if the area covered by the carrier two 120 and the carrier three 130 receives the carrier one for the user. The signal strength is still the largest, causing almost all users to access the carrier one, resulting in uneven load on each carrier user.
再請參閱第1、2圖，本發明之多載波多頻段無線通信系統中主載波配置之方法主要分成兩個部分，第一個部分為篩選可被用戶做為主載波的載波，第二個部分是在備選主載波確認後，選取何者為主載波可讓各載波之用戶負載均衡。其中，在篩選可被該用戶做為主載波的載波階段，當用戶接收到的信號強度及信號品質達到要求的門檻值(各主載波所要求的門檻值可以不同)，才允許該載波成為該用戶主載波的備選載波。當用戶偵測後發現符合門檻值要求的載波數少於等於1個時，則選取信號最強或信號品質最佳的載波；當符合條件之載波數多於一個時才進入第二階段的載波選取。 Referring to Figures 1 and 2, the method for configuring the primary carrier in the multi-carrier multi-band wireless communication system of the present invention is mainly divided into two parts. The first part is to filter the carrier that can be used as the primary carrier by the user, and the second In part, after the candidate primary carrier is confirmed, selecting which is the primary carrier can balance the load of each carrier. Wherein, in screening the carrier phase that can be used as the primary carrier by the user, when the signal strength and signal quality received by the user reach the required threshold (the threshold value required for each primary carrier may be different), the carrier is allowed to become the carrier. An alternate carrier for the user's primary carrier. When the user detects that the number of carriers meeting the threshold value is less than or equal to one, the carrier with the strongest signal or the best signal quality is selected; when the number of carriers that meet the condition is more than one, the carrier of the second phase is selected. .
如第2圖，當用戶200處在基地台100邊界時，該用戶200 只有載波一110符合標準，此時則選擇載波一110為主載波，用戶300位於基地台100含蓋的中心區域時，載波一110、載波二120及載波三130可能同時符合做為主載波的條件，則此將載波一110、載波二120及載波三130都列入該用戶的備選載波。在第二部分中，當用戶300已有多可載波符合做為主載波的條件時，分成以下步驟選取該用戶300最適合之主載波。 As shown in FIG. 2, when the user 200 is at the base station 100 boundary, the user 200 Only carrier 110 is in compliance with the standard. In this case, carrier 110 is selected as the primary carrier. When user 300 is located in the central area of the base station 100, carrier 110, carrier 2, and carrier 130 may simultaneously serve as the primary carrier. Condition, then carrier one 110, carrier two 120 and carrier three 130 are included in the candidate carrier of the user. In the second part, when the user 300 has a multi-carrier compatible condition as the primary carrier, the following steps are taken to select the most suitable primary carrier of the user 300.
A.計算符合條件之載波的用戶負載： A. Calculate the user load of the eligible carrier:
利用公式Carrierk Loading=(Usersk pCell+Usersk sCell×Wk sCell)/該載波頻寬，進行計算符合條件之載波的用戶負載，Carrierk Loading表示第k個載波的用戶負載；Usersk pCell表示將第k個載波做為主載波的用戶數；Usersk sCell表示將第k個載波做為輔載波的用戶數；Wk sCell為Usersk sCell的權重調整，其中因為做為輔載波的用戶不會常駐於該載波上，藉由此參數調整輔載波用戶數對於載波用戶負載相較於主載波用戶的權重，Wk sCell=0表示主載波用戶負載的調整以最為主載波的用戶數為主，Wk sCell=1表示所有正在使用的用戶皆做為調整用戶負載的依據。由公式可以得知用戶數的負載與載波頻寬有關，假設載波一110和載波二120有相同的用戶負載，若載波一110的頻寬為載波二120的兩倍表示此時的載波一110負載的用戶數也約為載波二120的兩倍。Carrierk Loading越低表示該載波的用戶負載越輕。 Calculate the user load of the carrier that meets the condition using the formula carrier k Loading = (Users k pCell + Users k sCell × W k sCell ) / the carrier bandwidth, Carrier k Loading represents the user load of the kth carrier; Users k pCell Indicates the number of users who use the kth carrier as the primary carrier; Users k sCell represents the number of users who use the kth carrier as the secondary carrier; W k sCell is the weight adjustment of Users k sCell , because the user is the secondary carrier It does not reside on the carrier. The parameter adjusts the number of secondary carrier users to the weight of the carrier user compared to the primary carrier user. W k sCell =0 indicates the number of users whose primary carrier user load is adjusted to be the primary carrier. Mainly, W k sCell =1 means that all users in use are used as the basis for adjusting user load. It can be known from the formula that the load of the number of users is related to the carrier bandwidth. It is assumed that the carrier 110 and the carrier 120 have the same user load. If the bandwidth of the carrier 110 is twice the carrier 120, the carrier 110 is present. The number of users loaded is also about twice that of carrier two 120. The lower the Carrier k Loading, the lighter the user load on the carrier.
B.計算信號干擾比加權： B. Calculate the signal to interference ratio weighting:
依據公式Carrierk Loading×Wk UE_SINR計算信號干擾比加權，其中Wk UE_SINR，表示該用戶對第k個載波信號品質的調整權重，一般而言信號品質越高則Wk UE_SINR越低，讓用戶越有機會以該載波為主載波，Wk UE_SINR可以依照載 波信號品質的排序或是訊號干擾比的強度調整。若調整各載波的Wk UE_SINR=1表示只從系統的用戶負載情況指派用戶主載波，該用戶的信號品質則不考慮。 The signal-to-interference ratio weighting is calculated according to the formula Carrier k Loading × W k UE_SINR , where W k UE_SINR indicates the user's adjustment weight for the k-th carrier signal quality. Generally, the higher the signal quality, the lower the W k UE_SINR , allowing the user The more likely the carrier is to be the carrier, the W k UE_SINR can be adjusted according to the order of the carrier signal quality or the strength of the signal interference ratio. If the W k UE_SINR =1 of each carrier is adjusted to indicate that the user primary carrier is only assigned from the user load condition of the system, the signal quality of the user is not considered.
C.計算客製化加權： C. Calculate the custom weighting:
依據公式(Carrierk Loading×Wk UE_SINR)×Wk option進行客製化加權，其中客製化加權為在實際運營的通信系統中電信運營商可能對於載波應用的策略有特殊考量，這些都可以在Wk option參數中設定。若希望該載波被優先選取，則設定該載波的Wk option較低，例如系統運營商希望第k載波只做為輔載波使用則調整Wk option=0。 Customization weighting is performed according to the formula (Carrier k Loading × W k UE_SINR ) × W k option , where the customization weighting is a special consideration for the telecom operator's strategy for carrier application in the actual operating communication system, which can be Set in the W k option parameter. If the carrier is preferentially selected, the W k option of the carrier is set to be low. For example, if the system operator wants to use the kth carrier only as a secondary carrier, the W k option =0 is adjusted.
D.選取計算後數值最低之載波： D. Select the carrier with the lowest value after calculation:
依據公式，進行選取計算後數值最低之載波，並將該用戶指派至所選取的載波，而在設定之時間週期後重新進入用戶負載均衡流程。 According to the formula The carrier with the lowest value is selected and the user is assigned to the selected carrier, and the user load balancing process is re-entered after the set time period.
本發明之多載波多頻段無線通信系統中主載波配置之方法，係可令系統端依用戶負載的狀況調度用戶的主載波，也同時確保被調度的用戶所操作的主載波的信號強度及品質符合所設定之要求。最終改善在多頻段多載波的用戶數分布不均衡現象。 The method for configuring a primary carrier in the multi-carrier multi-band wireless communication system of the present invention enables the system to schedule the user's primary carrier according to the condition of the user load, and also ensures the signal strength and quality of the primary carrier operated by the scheduled user. Meet the requirements set. Finally, the imbalance of the number of users in multi-band multi-carrier is improved.
綜上所述，本案不僅於技術思想上確屬創新，並具備習用之傳統方法所不及之上述多項功效，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。 To sum up, this case is not only innovative in terms of technical thinking, but also has many of the above-mentioned functions that are not in the traditional methods of the past. It has fully complied with the statutory invention patent requirements of novelty and progressiveness, and applied for it according to law. Approved this invention patent application, in order to invent invention, to the sense of virtue.
S01~S09‧‧‧步驟流程 S01~S09‧‧‧Step process
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| US20090285113A1 (en) * | 2008-05-13 | 2009-11-19 | Qualcomm Incorporated | Autonomous carrier selection for femtocells |
| CN101869000A (en) * | 2007-11-20 | 2010-10-20 | 高通股份有限公司 | Opportunistic uplink scheduling |
| CN101925082A (en) * | 2009-06-09 | 2010-12-22 | 大唐移动通信设备有限公司 | Method, system and equipment for determining and monitoring main carrier and indicating and activating carrier |
| CN102026268A (en) * | 2009-09-17 | 2011-04-20 | 华为技术有限公司 | Method and device for measuring and reporting cell carrier signals |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101869000A (en) * | 2007-11-20 | 2010-10-20 | 高通股份有限公司 | Opportunistic uplink scheduling |
| US20090285113A1 (en) * | 2008-05-13 | 2009-11-19 | Qualcomm Incorporated | Autonomous carrier selection for femtocells |
| CN101925082A (en) * | 2009-06-09 | 2010-12-22 | 大唐移动通信设备有限公司 | Method, system and equipment for determining and monitoring main carrier and indicating and activating carrier |
| CN102026268A (en) * | 2009-09-17 | 2011-04-20 | 华为技术有限公司 | Method and device for measuring and reporting cell carrier signals |
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