WO2011153957A1 - Method for determining a cell implementing interference coordination, and wireless network controller - Google Patents

Abstract

A method for determining a cell implementing interference coordination and a wireless network controller are provided, the method includes the following steps: a measurement report reported by a use equipment is obtained; pilot measurement results of a source cell, a target cell and other adjacent cells are obtained according to the measurement report; and a cell implementing interference coordination is determined according to the pilot measurement results. By dint of measured-reported adjacent cells, the range of interference coordination cell options is determined, and the adjacent cell which interference is weak is removed, thereby redundant processing and error augment can be avoided.

Description

 Method for determining cell for interference coordination and wireless network controller The present application claims to be submitted to the Chinese Patent Office on June 11, 2010, and the application number is 201010205629.1, and the invention name is "a method for determining a cell for interference coordination and The priority of the Chinese Patent Application for Wireless Network Controller, the entire contents of which is incorporated herein by reference. Technical field

 The present invention relates to wireless communication technologies, and in particular, to a method for determining a cell for interference coordination and a radio network controller. Background technique

 For the User Equipment (UE) to be accessed in the target cell, the current implementation method traverses each time slot according to the carrier priority queue and the slot priority queue, and attempts to access the UE in the currently traversed time slot.

 The ordering of carriers in the carrier priority queue and the scheduling of slots in the slot priority queue are generally as follows:

 1), sorted in a fixed order;

 2), sorted by power resources:

 Uplink: Received Total Wideband Power (RTWP) based on the base station or Interfere Signal Code Power (ISCP); Downstream: Transmitted Carrier Power based on the base station;

 3), sort by code resource occupation.

 For the three schemes, except for the uplink in mode 2), the resource detection is performed for the target cell, and the presence or absence of the user in the neighboring cell and the possible impact are not considered.

In the current Time Division Synchronized Code Division Multiple Access (TD-SCDMA) system, including version 4 (R4) and High Speed Packet Access (HSPA) systems, for new UEs Assign new to the target cell When resources are used, the actual load conditions of the uplink and downlink need to be considered to make decisions, for example, considering the basic resource unit (BRU) occupancy or power allocation. Due to the short code characteristics of the TD-SCDMA system and the lack of frequency resources, As the current interference is limited, it is recommended to use the power allocation or interference measurement as the basis for resource allocation. Since this decision is made in the Radio Network Controller (RNC), the uplink interference information is sufficient, and the downlink interference information is difficult. This also leads to inaccurate decision-making of the final downlink resource allocation, resulting in new The quality of the UE's service has declined. Summary of the invention

 The technical problem to be solved by the present invention is to provide a method for determining a cell for interference coordination and a radio network controller.

 Further, after determining the cell for interference coordination, a method for determining the priority of the time slot and the wireless network controller are also provided.

 Further, after the slot priority is determined, a method for accessing by slot priority and a radio network controller are also provided.

 In the embodiment of the present invention, a method for determining a cell for interference coordination is provided, including the following steps:

 Obtaining a measurement report reported by the UE;

 The pilot measurement results of the source cell, the target cell, and other neighboring cells are obtained according to the measurement, and the cell for interference coordination is determined according to the pilot measurement result.

 The embodiment of the present invention provides a method for determining a time slot priority, which includes the following steps: acquiring TCP of each downlink time slot of each cell performing interference coordination;

 The slot priority of the target cell is determined according to TCP.

 An embodiment of the present invention provides a method for accessing by slot priority ordering, including the following steps:

Blocking, in the current SDCA time slot priority queue, a DL time slot with a TCP interference value greater than a threshold; and accessing the UE according to the masked SDCA time slot priority list; Decelerating the UE that fails the access, and accessing the UE after the deceleration according to the masked priority list of the SDCA slot;

 If the access fails after the speed reduction, all UL time slots and DL time slots are reordered to obtain the time slot priority list, and the UE is accessed according to the obtained time slot priority list.

 A radio network controller is provided in the embodiment of the present invention, including:

 a measurement report module, configured to obtain a measurement report reported by the UE;

 a measurement result module, configured to obtain pilot measurement results of the source cell, the target cell, and other neighboring cells according to the measurement report;

 The interference cell determining module is configured to determine, according to the pilot measurement result, a cell that performs interference coordination. A radio network controller is provided in the embodiment of the present invention, including:

 a TCP acquisition module, configured to acquire each downlink time slot of each cell performing interference coordination

TCP;

 a priority determining module, configured to determine a time slot priority of the target cell according to the TCP.

 A radio network controller is provided in the embodiment of the present invention, including:

 a masking module, configured to block, in the current SDCA time slot priority queue, a DL time slot with a TCP interference value greater than a threshold;

 a first access module, configured to access the UE according to the masked SDCA time slot priority list;

 The speed reduction module is configured to perform a speed reduction on the UE that fails the access, and access the UE after the deceleration according to the masked SDCA time slot priority list;

 The second access module is configured to re-order all UL time slots and DL time slots to obtain a time slot priority list if the access fails after the speed reduction, and then access the UE according to the obtained time slot priority list.

 The beneficial effects of the present invention are as follows:

In the determining scheme of the cell for interference coordination provided by the embodiment of the present invention, the pilot measurement result of the source cell, the target cell, and other neighboring cells is obtained according to the measurement report reported by the UE; and the interference coordination is determined according to the pilot measurement result. Community. Therefore, by borrowing the neighbors that are reported for reporting The information is used to determine the range of interference coordination candidate cells, and to remove the weaker neighbors, thereby avoiding excessive processing and increasing errors.

 In the determining scheme of the slot priority provided by the embodiment of the present invention, the UE determines the target cell slot according to the TCP (base station downlink transmit power) of each downlink slot of the neighboring cell participating in the interference coordination. Priority, so that the interference environment of the target cell to be accessed in the time slot can be more accurately reflected, so that the new access user can select the most suitable time slot access.

After the TCP interference value is greater than the DL time slot of the threshold, the first round of the sorting is performed: access is performed according to the masked SDCA time slot priority list; then, the failed access UE is decelerated; if the speed reduction continues, the access fails. All the UL and DL time slots are sorted in the second round, and the time slot priority list is obtained, and then access is performed. Since two rounds of sorting access are used, it is possible to prevent a certain carrier from having both the largest DL time slot of TCP and the smallest DL time slot of TCP. Finally, the carrier is still ranked in the front, and the connection is improved. Reliability of the entry. DRAWINGS

 1 is a schematic flowchart of a method for determining a cell for performing interference coordination according to an embodiment of the present invention; FIG. 3 is a schematic flowchart of a method for performing access according to slot priority ordering according to an embodiment of the present invention;

4 is a radio network controller for determining a cell for interference coordination according to an embodiment of the present invention;

Schematic diagram

 Figure 6

Schematic diagram of the structure. detailed description The technical solution provided by the embodiment of the present invention finally solves the problem that the downlink interference information is insufficiently obtained, so that the new UE evaluates the downlink interference more accurately when the target cell allocates resources, thereby reducing interference and improving service quality. Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

 In the implementation description, since the resource allocation is performed for the target cell, the present cell in the present application refers to the target cell; meanwhile, in the implementation description, the variables are all in dBm actual value.

 First, how to determine the cell to perform interference coordination will be described, and then the determination of the priority of the time slot will be described. Finally, the ordering of the priority of the time slot will be described.

 1. Determination of a cell for interference coordination.

 FIG. 1 is a schematic flowchart of a method for determining a cell for performing interference coordination, and as shown in the figure, the following steps may be included:

 Step 101: Obtain a measurement report reported by the UE.

 Step 102: Obtain pilot measurement results of the source cell, the target cell, and other neighboring cells according to the measurement report.

 Step 103: Determine, according to the pilot measurement result, a cell that performs interference coordination.

 When obtaining the measurement report reported by the UE, the measurement report can be obtained by one or a combination of the following methods:

 The measurement report is obtained by the same-frequency event reported by the UE during the handover process, the measurement report is obtained by the inter-frequency event reported by the UE during the handover process, and the measurement report is obtained by the internal measurement report reported by the UE during the handover process.

 Specifically, in the implementation of steps 101 and 102, the source may be obtained according to the same-frequency event (such as 1G), the inter-frequency event (such as 2A), and the internal (add-on-frequency/inter-frequency) measurement event reported by the UE during the handover process. The pilot measurement results of the cell, the target cell, and other neighboring cells, and the neighbor cell list of the target cell is obtained, which can be recorded as an AdjCellList in the implementation.

 In the implementation, the acquisition of the pilot measurement result is performed for the resource selection in the handover scenario, so in order to simplify the implementation, the handover measurement reporting information may be used to select the cell to perform interference coordination; of course, each NodeB under the RNC may be allowed. The UEs are all reported for reporting, but this implementation is more complicated.

In the implementation of step 103, when determining a cell for interference coordination according to the pilot measurement result, The cell performing interference coordination may be determined in the following manner, that is, the neighboring area i satisfying the following formula is determined as the cell for interference coordination:

PCCPCH _ RSCP _{T axg etCell} - PCCPCH _ RSCP _0thMl _ _l < δ (Formula 1), where:

PCCPCH _ RSCP _{T∞ getCell} is the pilot measurement result value of the target cell, and PCCPCH _ RSCPo^c^ is the pilot measurement result value of the neighboring cell ^, which is the pilot difference between the target cell and the neighboring cell, in implementation, in order to avoid too This threshold is set for the selection of more weak neighbors. In the formula, the PCCPCH in ^^^^^^ —^ ^^ is the Primary Common Control Physical Channel, and the RSCP is the Received Signal Code Power. This value is chosen because it is generally considered to be "received pilot signal strength", is a UE accessing the cell, and is an important parameter used in handover cell decisions, ie, this value must be greater than a certain threshold before it can be connected. In (for example, -85dBm), the difference between the two cells is greater than a certain threshold to determine the handover, so this value is one of the key factors, so select it. In the implementation, other parameters can also be used, which is to achieve the same effect.

 Specifically, for each neighboring cell, the judgment can be made by looking up the pilot measurement result of each cell in the AdjCellList.

 Further, the implementation may further include: adding, when the source cell is not included in the cell for performing interference coordination according to the pilot measurement result, adding the source cell to the cell performing interference coordination.

Specifically, a list of all the neighboring neighbors that satisfy the formula 1 is obtained; if the source cell is not included in the list, the join is added, and the pilot of the source cell is considered to be the corpus ο^ / _Λ5 ^ _£ ^„ - the relative threshold is switched, The weighting consideration for the interference of the source cell is increased. In the implementation, the judgment of the source cell is not included in the formula 1, but after all the neighboring cell lists satisfying the formula 1 are obtained, if the source cell is not included in the list, the supplementary cell is added. Source cell The pilot is corpus ο^ / _Λ5 ^ _£ ^„ - the relative threshold is switched to increase the weighting consideration for the interference of the source cell. Since the target cell is greater than the source cell by dB in handover, that is, the handover relative threshold in the formula, It is weighted to the target cell pilot value - the switch relative threshold.

 The purpose of the foregoing implementation is to: determine the range of the interference coordination candidate cell by using the neighboring cell pilot information of the handover measurement; and remove the interference power of each neighboring cell in the candidate cell according to the handover UE, and remove the interference. The neighboring area, so as to avoid excessive processing and increase the error; finally, the source cell is added to make the interference consideration more comprehensive.

 Second, the determination of the priority of the time slot.

 FIG. 2 is a schematic flowchart of a method for determining a time slot priority, as shown in the following figure, which may include the following steps:

 Step 201: Obtain carrier transmit power (TCP) of each downlink time slot of each interfering neighbor cell;

 Step 202: Determine a slot priority of the target cell according to the TCP.

 In an implementation, in step 201, the interfering neighboring cell that needs to acquire the TCP may use the cell that performs interference coordination determined in the first scheme, so that the determined cell that performs interference coordination may be used to determine the time slot according to the time slot. The priority of the time slot on which the priority queue traverses and attempts to access. However, for each interfering neighboring cell, other conventional means may be used to determine, but only when the cell that performs interference coordination determined by the foregoing manner is used, the neighboring cell reported by the handover measurement is used, and the UE is switched according to the handover. A better effect can be obtained for the reason that the interference is poor in the reception power of each neighboring cell in the candidate cell.

In the implementation of step 201, TCP is a common measurement value of the NodeB, and the transmit carrier power of each time slot is measured and reported as a percentage of the maximum transmit power. The radio network signaling processing board can be obtained by a certain processing method. Process Assemble, RSPA The TCP in the neighboring area of the board is obtained in the storage area of the neighboring area information of the board. When implemented by a certain processing method, for example, a simple processing method is to use the transmission TCP information in the existing communication mode between different signaling boards in the RNC. In the implementation of step 202, in the implementation of determining the priority of the time slot according to the TCP, the following manner is provided in the embodiment, and the following description is as follows:

 method one

 In the implementation, after obtaining the TCP measurement value of each downlink time slot of each interfering neighboring cell, the correction of the measured value may be considered. Therefore, further, the method may further include:

 Handle TCP as follows:

TCP; _ih = TCP _{1 ] h} xW° _σ

J' ^{h J} ' ^h , A is the path loss weighting coefficient value calculated by the PCCPCH information;

 When the PCCPCH transmit power of each cell is the same:

a _i = (PCCPCH _ RSCP _t - PCCPCH _ RSCP _t ) (Equation ₂ ) Or, when the PCCPCH transmit power of each cell is different:

a. = {PCCPCH _ RSC - PCCPCH _ Power, ) - (PCCPCH _ RSCP _t - PCCPCH _ Power _t ) The subscript represents the current interfering neighbor cell, and the t subscript represents the target cell.

 j, h respectively represent the hth downlink time slot of the jth carrier of the cell. The value of the path loss weighting coefficient representing the i-th interfering neighbor cell, in dB.

PCCPOT — Pm^r represents the transmit power of _pccpCH . Specifically, for each interfering neighboring cell, since the TCP value is the transmit power of the NodeB side, a path loss weighting coefficient may be considered. In the implementation, a switch control may be set to determine whether the weighting is needed in the current situation. The weighting method cannot be - enumeration, formula 2, formula 3 is the calculation method of two kinds of weights. Equation 2 considers that the maximum downlink transmit power of all cells is the same. Equation 3 considers that the maximum downlink transmit power of all cells may be different.

The function of road loss weighting is to correct the potential interference severity of the same frequency neighboring area. Because TCP is only the transmitting power of the base station, there is no path loss, so it needs to be corrected to avoid the farther cell. A situation in which TCP is closer to the nearest cell, but may cause different interference to the UE. Therefore, in the embodiment, Equation 2 and Equation 3 are taken as an example for implementation; however, in theory, other methods are also possible, as long as the potential interference intensity of the same frequency neighboring region can be corrected, Equation 2 Equation 3 is only used to teach the person skilled in the art how to implement the present invention, but it does not mean that only Equation 2 and Equation 3 can be used. In the implementation process, the corresponding path loss weighting processing manner can be determined in combination with practical needs.

Then, if the switch is turned on, the neighbor TCP value can be processed as: P' = TCP χΐ θ ¹⁰

"' ^h "'^h; if closed, use the current TCP value directly

TCP' = TCP

"", ^h . The meaning of its value is still a percentage.

 In an implementation, after obtaining the TCP measurement value of each downlink time slot of each interfering neighboring cell, whether the target cell is included in the interference effect may be considered. Therefore, the method further includes:

 Obtaining TCP of each downlink time slot of the current cell, and determining a time slot priority according to the TCP of the current cell and each interfering neighboring cell.

 In a specific implementation, when the target cell is included in the interference impact, a switch may be simply set to control whether the target cell is taken into consideration. If the switch is turned on, the TCP of the cell is included in the final priority consideration. Otherwise, only the neighboring area calculation except the target cell is used.

 After determining the TCP for determining the priority of the time slot according to the above manner, in step 202, the following can be implemented:

TV MaxTransPower _t +a _t

/\ 1 10

 i=\

or, MaxTransPow er _t MaxTransPow er _t +a _t

 10

 P =

j,h

 i=\

 (Formula 5)

 Where j and h respectively represent the hth downlink time slot of the jth carrier of the cell, and N is the number of interference neighboring cells.

 p

 The i subscript represents the current interfering neighbor cell, and t represents the target cell, which is the priority of the h th downlink slot of the jth carrier.

 T P

For ^J , ^h , mode 1, because TCP values are used directly, it is not necessary to replace TCP'.

"" ^h , that is, if the switch is turned on, the neighboring TCP value is treated as follows:

TCP' _h = TCP _l x lO ^w . If off, directly use the current TCP value ⁷ ^ ^{= 7} °^. The meaning of its value is still a percentage.

MaxTransPower is the maximum transmit power of the cell i. MaxTransPower _t is the maximum transmit power of the target cell. It is an important parameter of the RNC. Generally, the parameter can be seen through the operation and maintenance interface, that is, the parameter can be learned by the RNC.

 In a specific implementation, when calculating the time slot priority, according to the obtained measurement value and the control of the two switches, the total interference value may be counted for the hth downlink time slot of the jth carrier of the target cell, where N is the interference neighbor. The number of cells; thus, using the TCP measurement value, after the control of two switches, and the consideration of the weight loss of the path, the time slot priority is finally obtained. Since there are many specific calculation methods, as long as the total interference value of one time slot can be counted Can be used, here can not - enumerate, in the above two ways, Equation 4 describes a priority calculation method that does not consider the target cell TCP; Equation 5 describes a priority considering the target cell TCP Calculation.

Way two When the carrier and the downlink time slot TCP period of each cell in the current RNC are updated for the interference coordination reference, since the TCP is a common measurement value of the NodeB, the downlink time slot may have multiple UEs with different positions. The orientation relationship between these UEs and the current handover UE is different, and the interference caused is also different. Therefore, further, it can also be implemented as follows in order to achieve a more accurate downlink interference assessment.

 1. Obtain the Angle of Arrival (AOA) and TCP-specific measurement information of each carrier in each cell in the current RNC, and in the specific implementation, the parameters may also be configured as a NodeB periodic report or event report. Come to

 2. The PCCPCH-RSCP information of all the UEs connected to the current RNC is obtained. In the specific implementation, the parameters may be reported as a UE periodic report or an event report. The reporting manner may include:

 1) Configure all UEs to report pilot measurements.

 2) Introduce a new event definition, and trigger the UE to report the measurement report when the entry condition is met or the departure condition is met. The measurement report for general switching only reports the measurement report when the entry condition is met. In order to support the measurement report required for interference coordination, the UE is also triggered to report the measurement report when the departure condition is satisfied. Whether to report the measurement report when the departure condition is satisfied can be controlled by a parameter ReportOnLeave. For details, refer to the A3 event implementation in TS36.331.

 In the implementation, the interference of each time slot may be corrected according to the Grid Of Beam (GOB) pattern according to the AOA of each carrier and each time slot UE.

 The significance of the correction is to look up the AOA direction of the UE on the GOB pattern, and obtain the actual shaping gain in the direction for the subsequent weighting of the transmission power to reflect the role of the smart antenna shaping.

 The following is an explanation of the implementation of the downlink interference based on the AOA reported by each UE to calculate the downlink interference more accurately.

 For a single user per time slot, TCP is directly stored in the maximum direction corresponding table unit.

 For the case of multiple users per time slot, it is necessary to calculate separately and then integrate one maximum direction unit storage. The calculation method is as follows:

The RNC side saves the GOB pattern of the matching antenna type of different cells, according to the AOA estimate, In the pattern, the AOA direction is the maximum value, and the position in the table below is confirmed by the angle with the maximum value of the shaping direction within a threshold (for example, 3 dB). For multiple users, it is necessary to superimpose the patterns of multiple users and consider the angles with the maximum value of the shaping direction within a threshold range.

 For the above method, only the angular interference in the maximum direction is saved, and the influence of the side lobes is not carefully considered. It is considered that the completed user direction superposition is more carefully considered, and the superimposition is performed in the next step to obtain a better effect. Due to the inaccuracy of the pattern estimation, this may be more effective for larger angular differences.

 The RNC side can periodically maintain an interference reference that takes into account the direction. Here, a switch can be used to consider interference evaluation with different accuracy. When the switch is turned off, consider a rough evaluation, that is, the following table is selected for each cell selection, and any distance can be selected for the angle range. Only one of the following is illustrated:

 For a certain carrier, taking a sector as an example, a value is reserved every 10 degrees, and TCP indicates the direction-weighted slot transmit power.

When the switch is turned on, the path loss per UE can be obtained according to the PCCPCH-RSCP reported in the previous UE period:

PathLoss = PCCPCH Power - PCCPCH RSCP (Equation ₆ ), after obtaining the path loss of each UE, it can approximate the interference of each downlink time slot of a certain carrier of the current cell to other cells. For many methods, only two are listed here. Kind:

For the K UEs of the hth downlink time slot of the jth carrier, consider the shadow of the occupied resources and the path loss. ring:

 K

TCP ^ _h =∑ ^ik / ^h _{BRU mM} - PathLoss _k ) (Equation ₇₎ k=\ / — k

BRU_NUM _k refers to the number of Basic Resource Units (BRUs) occupied by the kth UE, and the i subscript represents the current cell for interference coordination.

 For the K UEs of the h th downlink slot of the jth carrier, consider the occupied resources and path loss and the impact of the AOA:

^TCP 'i,j,h,AOA ^{X Directiond} ― Coeff(AOA _ est _ik ) - PathLoss _ik )

 (Formula 8)

Where: i subscript represents the current cell for interference coordination, Directional _Coeff(AOA_est _lk ) is the shaping gain of the kth UE relative to cell A's AOA on the GOB pattern; BRU_NUM _k refers to the kth The number of BRUs occupied by the UE.

 The RNC side period maintains an interference reference quantity considering the direction. The selection of each cell is maintained as follows:

 TCP, indicating the direction-weighted slot transmit power

For a UE that currently needs to use a new resource in a target cell, the RNC can use the interference reference information obtained in the first two steps to perform interference avoidance.

TCP, which is the corrected TCP value, is still reported as a percentage of the maximum transmit power. Through certain processing methods, TCP's in the neighboring area between the boards (RSPA boards) can be obtained in the storage area of the neighboring area information of the board. For the N co-frequency neighbors of all current time slots, the h-th downlink time slot of the j-th carrier of the target cell is calculated for its priority. Since there are many statistical methods, here are only two examples: When the switch is turned on,

 N

Pj,h ∑ TCP _{ijh A0A}

= ¹ (formula 9)

 When the accurate evaluation switch is turned off,

 N

= ¹ (Equation 10)

 TCP'

It can be seen from the above implementation. In the first method, the ten calculation method is: cp _h = Tcp _] , _h χΐο or TCP^ = TCP^ .

In the second way, the ten calculation method is: T ' — PathJ λ

 Or,

^TCP 'i,j,h,AOA =∑, ^J ^ ^rj ' ^k, / ^h BRU NUM ^{X Directiond} ― Coeff(AOA _ est _ik ) - PathLoss _ik )

 k=l / — k

^ ^ Calculated as: Pj,h = TCP, _u , _h

.

 Among them, the first method is a simplified evaluation method; the second method is a more accurate evaluation method; both methods use the TCP statistic, and the first method uses a parameter alpha to represent the weighting coefficient of the path loss change; In addition to TCP, mode 2 also selects directional gain for each UE.

 ( directional coeff ), and the exact path loss value ( athloss ), so it is more accurate than alpha.

 Third, the sorting method of time slot priority.

 FIG. 3 is a schematic flowchart of a method for performing access according to slot priority ordering. As shown in the figure, the following steps may be included:

 Step 301: Blocking, in a current Slow Dynamic Channel Allocation (SDCA) time slot priority queue, a downlink (Down Link, DL) time slot with a TCP interference value greater than a threshold;

 Step 302: Access the UE according to the masked SDCA time slot priority list.

 Step 303: Perform a deceleration on the UE that fails to access, and access the UE after the deceleration according to the masked priority list of the SDCA slot.

 Step 304: If the access fails after the speed reduction, all the Uplink (UL) time slots and the DL time slots are reordered to obtain the time slot priority list, and then the UE is performed according to the obtained time slot priority list. Access.

All UL time slots and DL time slots refer to all time slots including deleted DL time slots with TCP interference values greater than the threshold. In the implementation, when performing carrier/slot sorting and receiving on the target cell, the SDCA carrier frequency sorting method of the target cell uses the NodeB common measurement by default, the DL time slot queuing method uses the NodeB common measurement by default, and the UL time slot queuing method is used here. If you do not ask for the requirements, you still use the method that the cell originally configured. DL p

When using TCP measurement, you can refer to the implementation obtained in the above formula. In the implementation, the SDCA is a Radio Resource Management (RRM) algorithm. The adjustment method can be based on different services of fixed queuing, basic resource unit (BRU) resource selection, etc. There are several queuing modes, and it is also possible to control uplink and downlink time slots of priority access of each carrier frequency (N frequency point) of each cell. In this embodiment, it is based on SDCA of public measurement.

 In order to prevent a carrier from having both the largest DL time slot of TCP and the smallest DL time slot of TCP, the carrier is still integrated in the previous situation. Here are 2 rounds of resources to try:

 In the first round, the total interference TCP of the DL time slot is greater than or equal to the threshold (configurable under the cell), and the SDCA carrier/slot queuing method is used to perform sorting to obtain a carrier/time slot priority list. , access. When the carrier is sorted, the total number of DL slots needs to be subtracted from the deleted time slot. If the access fails, you need to try to slow down, and follow the shielded SDCA time slot priority list to access the decelerated UE. If it still fails after the speed reduction, it will enter the next round.

 In the second round, all UL and DL time slots are involved in sorting, and a carrier/slot priority list is obtained for access.

 The method of sorting all UL time slots and DL time slots can use the SDCA time slot queuing method. Further, all UL time slots and DL time slots may be sorted according to the number of resources occupied by the service. That is, in the prior art, when the SDCA algorithm is used, the carrier is usually selected first, and then the time slot is selected according to the time slot priority, and the carrier priority is a coefficient obtained by combining multiple uplink time slots, and multiple downlink times. The coefficients obtained by the gap synthesis are weighted again. In the embodiment of the present invention, when the SDCA algorithm is used, the step of the first carrier after the time slot is broken, and the resource may be selected according to the mixed priority of the time slot and the carrier in the priority queue. Specifically:

After obtaining the priority weights of all uplink and downlink time slots, the carrier priority is no longer used for all time slots. The average weights are sorted, and the uplink/downlink time slot combinations satisfying the resource requirements are selected from each carrier, and the priority weights of the combinations are obtained by the uplink and downlink weights. For example, if the uplink and downlink requirements of the service to be switched are both single time slots, the following table is calculated according to the time slot priority factor:

 Finally, the priorities of all the calculated candidate resource combinations are sorted, and the best time slot combination is preferentially selected for resource allocation attempts to determine the slot priority of all UL time slots and DL time slots. a radio network controller of a cell, a radio network controller for determining a slot priority, and a radio network controller for determining a slot priority ordering manner, due to the principle of solving problems of these devices and performing interference coordination The method for determining the cell, the method for determining the priority of the time slot, and the method for determining the priority according to the priority of the time slot are similar. Therefore, the implementation of these devices can be referred to the implementation of the method, and the repeated description is not repeated.

 FIG. 4 is a schematic structural diagram of a radio network controller for determining a cell for performing interference coordination. As shown in the figure, the radio network controller may include:

 a measurement module 401, configured to obtain a measurement report on the UE;

The measurement result module 402 is configured to obtain a source cell, a target cell, and other neighbors according to the measurement report. Pilot measurement results of the area;

 The interference cell determining module 403 is configured to determine a cell for interference coordination according to the pilot measurement result.

 In an implementation, the measurement result module may be further configured to: when acquiring the measurement report reported by the UE, obtain the measurement report by using one or a combination of the following manners:

 The measurement report is obtained by the same-frequency event reported by the UE during the handover process, the measurement report is obtained by the inter-frequency event reported by the UE during the handover process, and the measurement report is obtained by the internal measurement event reported by the UE during the handover process.

 In an implementation, the interfering cell determining module may be further configured to determine, in the cell that performs interference coordination according to the pilot measurement result, the neighboring cell i that satisfies the following formula as the cell that performs interference coordination:

PCCPCH _ RSCP _{T axg etCell} - PCCPCH _ RSCP _0therCell _ ₁ < S where: PCCPCH _ RSCP _{Tw etCell} is the pilot measurement result value of the target cell, and PCCPCH _ RSCPo^c^ is the pilot measurement result value of the neighboring cell ^ The pilot cell and the neighboring cell pilot difference.

 In an implementation, the interfering cell determining module may be further configured to: when the cell that performs interference coordination according to the pilot measurement result does not include the source cell, add the source cell to the cell that performs interference coordination.

In the implementation, the interfering cell determining module may further be configured to process the pilot of the source cell according to the PCCPCH _RSCP _{T argeiCe} „ - switching relative threshold.

 FIG. 5 is a schematic structural diagram of a radio network controller for determining a time slot priority. As shown in the figure, a cell priority of a target cell is determined according to the determined cell for performing interference coordination, and the radio network controller may Includes:

 The TCP obtaining module 501 is configured to acquire each downlink time slot of each cell that performs interference coordination.

TCP; The priority determining module 502 is configured to determine a slot priority of the target cell according to the TCP.

 In an implementation, the TCP obtaining module may be further configured to obtain the TCP from a storage area of the neighboring area information of the local RSPA.

 In implementation, the TCP acquisition module may further be used to process TCP in the following manner:

TCP' _h = TCP _iih xW° ₊ TCP' _h = TCP _iih a , , ^ ww , or, ' ^h w , for pass

The path loss weighted value calculated by the PCCPCH information;

 When the PCCPCH transmit power of each cell is the same:

a _i = {PCCPCH _ RSCP _l - PCCPCH _ RSCP _t ) Or, when the PCCPCH transmit power of each cell is different:

a _t = (PCCPCH _ RSC - PCCPCH _ Power, ) - {PCCPCH _ RSCP _t - PCCPCH _ Power _t ) , where:

The i subscript represents the current cell for interference coordination, the t subscript represents the target cell, and j and h represent the h th downlink time slot of the jth carrier of the cell respectively, representing the path loss of the i th channel for interference coordination. The weighting coefficient value, PCCPCH _RSCP is the pilot measurement result value, and PCCPOT_Pm^r represents the transmission power of _pccpCH .

In an implementation, the priority determining module may be further configured to determine, according to the determining the time slot priority according to the TCP, the following formula:

 p _ = i=l

j, N MaxTransPow er _i

 L0 ^ ^ ^ , where:

 i=\

j, h respectively represent the hth downlink time slot of the jth carrier of the cell, N is the number of cells performing interference coordination, the i subscript represents the current cell for interference coordination, and MaxTransPowei. is the maximum transmit power of the cell i. The priority of the hth downlink time slot of the jth carrier. In an implementation, the TCP obtaining module may be further configured to obtain each downlink time slot of the local cell.

TCP;

 The priority determining module may be further configured to determine a slot priority based on the TCP of the own cell and each of the cells performing interference coordination.

 In the implementation, the priority determining module may further be used to: when determining the priority of the time slot according to the TCP, the following processing:

 , among them:

 j, h respectively represent the hth downlink time slot of the jth carrier of the cell, N is the number of cells performing interference coordination, the i subscript represents the current cell for interference coordination, and t represents the target cell.

MaxTransPower is the maximum transmit power of the cell, and ^A is the priority of the hth downlink time slot of the jth carrier.

 In an implementation, the TCP acquisition module may be further configured to obtain PCCPCH-RSCP information of all UEs connected under the current RNC; and obtain a path loss of each UE according to the following formula:

 PathLoss = PCCPCH Power - PCCPCH RSCP, where

PathLoss is the path loss of the UE, PCCPCH Power is the _PCCPCH transmit power, and PPCCPCH _RSCP is the pilot measurement result of ^. In the implementation, the TCP acquisition module may further be configured to process the TCP of the K UEs of the hth downlink time slot of the jth carrier in the following manner:

^TCP ^ =∑ k=\ ^{TCPj // _B RU— NUM k _k - ^PathL ° ^{SSi k )} , where:

BRU _t refers to the number of basic resource unit BRUs occupied by the kth UE, and the i subscript represents The former cell that performs interference coordination.

 In the implementation, the priority determining module may further be used to: when determining the priority of the time slot according to the TCP, the following processing:

N

 /=1 ; where,

 p

 N is the number of cells performing interference coordination, and ^ is the priority of the hth downlink time slot of the jth carrier.

 Considering the AOA factor, the wireless network controller can further include:

 The AOA obtaining module 503 is configured to acquire an AOA of each carrier and each time slot UE in all cells in the current RNC.

 In the implementation, the TCP acquisition module may be further configured to correct the interference of each time slot according to the GOB pattern according to the AOA of each carrier and each time slot UE.

 In the implementation, the TCP obtaining module may be further configured to process the TCP of the K UEs of the hth downlink time slot of the jth carrier in the following manner:

^TCP 'i,j,h,AOA ^{X Directiond} ― Coeff(AOA _ est _ik ) - PathLoss _ik )

, where: i subscript represents the current cell for interference coordination,

The shaping gain of the kth UE relative to the AOA of the cell i found on the GOB pattern; BRU_NUM _k refers to the number of BRUs occupied by the kth UE.

 In the implementation, the priority determining module may further be used to: when determining the priority of the time slot according to the TCP, the following processing:

^P ji

Beans

 =1

 p

N is the number of cells performing interference coordination, and ^ is the priority of the hth downlink time slot of the jth carrier. As shown in the figure, after determining the time slot priority, the radio network controller may include: a masking module 601, configured to mask, in the current SDCA time slot priority queue, a DL time slot with a TCP interference value greater than a threshold;

 The first access module 602 is configured to access the UE according to the masked SDCA time slot priority list.

 The speed reduction module 603 is configured to perform a speed reduction on the UE that fails to access, and access the UE after the deceleration according to the masked priority list of the SDCA slot;

 The second access module 604 is configured to re-sequence all UL time slots and DL time slots to obtain a time slot priority list after the speed reduction is performed, and access the UE according to the obtained time slot priority list. .

 In implementation, the second access module can be used to:

 All UL time slots and DL time slots are reordered according to the SDCA time slot queuing method; or all UL time slots and DL time slots are reordered according to different service occupied resources.

 For convenience of description, the various parts of the above described devices are divided into various modules or units by function. Of course, the functions of the various modules or units may be implemented in one or more software or hardware in the practice of the invention.

 The technical solution provided by the embodiment of the present invention is as follows:

 The co-channel interference reference of the target cell is obtained by using the common measurement amount on the UTRAN side. The interference coordination neighbor information of the current UE is obtained by using the dedicated measurement of the UE.

 The neighboring area is controlled to participate in the interference coordination algorithm by using the pilot difference threshold of the neighboring area.

 The potential interference strength of the neighboring area is corrected by any path loss weighting method.

 Further consideration is given to the special handling of the source cell weighting values.

 Use two rounds of carrier, time slot selection, and so on.

The technical solution provided by the embodiment of the present invention can enable the UE to be accessed in the target cell to select a resource with less downlink interference to use, thereby avoiding strong interference or strong interference, and improving user service quality. Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can be embodied in the form of one or more computer program products embodied on a computer-usable storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.

 The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowcharts and/or block diagrams, and combinations of flow and/or blocks in the flowcharts and/or block diagrams can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

 The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

 These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the art that, Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and The spirit and scope of the invention. Thus, if such modifications and variations of the present invention are claimed in the present invention The invention is also intended to cover such modifications and variations within the scope of the invention.

Claims

Rights request

A method for determining a cell for performing interference coordination, comprising the steps of: acquiring a measurement report reported by a user equipment UE;

 The pilot measurement results of the source cell, the target cell, and other neighboring cells are obtained according to the measurement, and the cell for interference coordination is determined according to the pilot measurement result.

 2. The method according to claim 1, wherein when the measurement report reported by the UE is obtained, the measurement report is obtained by one or a combination of the following manners:

 Obtaining a measurement report by the same-frequency event reported by the UE during the handover process;

 Obtaining a measurement report by using an inter-frequency event reported by the UE during the handover process;

 The measurement report is obtained by the internal measurement event reported by the UE during the handover process.

 3. The method according to claim 1, wherein when determining a cell for interference coordination based on the pilot measurement result, the neighboring cell i that satisfies the following formula is determined as the cell for interference coordination:

PCCPCH _ RSCP _{T a etCell} - PCCPCH _ RSCP _0therCell _ ₁ < S where:

PCCPCH _ RSCP _{Tw etCell} is the pilot measurement result value of the target cell, and PCCPCH _ RSCPo^c^ is the pilot measurement result value of the neighboring cell ^, which is the pilot difference between the target cell and the neighboring cell.

 The method according to any one of claims 1 to 3, further comprising: adding a source cell to perform interference coordination when determining that the cell performing interference coordination according to the pilot measurement result does not include the source cell In the community.

5. The method of claim 4, wherein the pilot of the source cell is

- Switch relative thresholds.

A method for determining a time slot priority, characterized in that a cell for performing interference coordination determined according to the method according to any one of claims 1 to 5 determines a time slot priority of a target cell, and includes the following steps. : Obtaining a carrier transmit power TCP of each downlink time slot of each cell performing interference coordination;

 The slot priority of the target cell is determined according to TCP.

 7. The method according to claim 6, wherein the TCP is acquired from a storage area of the neighboring area information of the local wireless network signaling processing board RSPA.

 The method according to claim 6, wherein after obtaining the TCP of each downlink time slot of each cell performing interference coordination, and before determining the time slot priority according to the TCP, the method further includes: Way to handle:

TCP' _h = TCP _iih x W° TCP; _ih = TCPi _ih ^ When the PCCPCH transmit power of each cell is the same:

α _ι = {PCCPCH _ RSCP _l - PCCPCH _ RSCP _t ) Or, when the PCCPCH transmit power of each cell is different:

a _t = (PCCPCH _ RSCPi - PCCPCH _ Power, ) - {PCCPCH _ RSCP _t - PCCPCH _ Power _t ) , where:

The i subscript represents the current cell for interference coordination, the t subscript represents the target cell, and j and h represent the h th downlink time slot of the jth carrier of the cell respectively, representing the path loss of the i th channel for interference coordination. The weighting coefficient value, PCCPCH _RSCP is the pilot measurement result value, and PCCPOT_Pm^r represents the transmission power of _pccpCH .

 9. The method according to claim 8, wherein when the time slot priority is determined according to TCP, the following determination is made:

among them:

 i=\

N is the number of cells performing interference coordination, MaxTransPowe is the maximum transmit power of cell i The rate, ^ ^ is the priority of the h th downlink slot of the jth carrier.

 10. The method according to claim 8, wherein when determining the priority of the time slot, the method comprises:

 The TCP of each downlink time slot of the target cell is obtained, and the time slot priority is determined according to the target cell and the TCP of each cell performing interference coordination.

 11. The method according to claim 10, wherein, when the time slot priority is determined according to TCP, the following determination is made:

 , among them:

 N is the number of cells performing interference coordination, t represents the target cell, and MaxTransPower is the maximum transmit power of the cell, which is the priority of the hth downlink time slot of the jth carrier.

 The method according to claim 6, wherein after obtaining the TCP of each downlink time slot of each interference neighboring cell that performs interference coordination, and before determining the time slot priority according to the TCP, the method further includes:

 Obtaining PCCPCH-RSCP information of all user equipment UEs connected under the current radio network controller RNC;

 The path loss of each UE is obtained as follows:

PathLoss = PCCPCH Power - PCCPCH RSCP, where PathLoss is the path loss of the UE, PCCPCH Power is the _PCCPCH transmit power, and PPCCPCH _RSCP is the pilot measurement result of ^.

13. The method according to claim 12, wherein the TCP of the K UEs of the hth downlink slot of the jth carrier is processed in the following manner: ^TCP ^ ^ k=\ ^{TCPi k} // ^h _B RU— NUM k _k - ^PathL ° ^{SSi k )} , where:

BRU—The number of basic resource units BRU occupied by NUM k UEs, and the i subscript represents the current cell for interference coordination.

 14. The method according to claim 13, wherein when the time slot priority is determined according to TCP, the following determination is made:

N

N is the number of cells performing interference coordination, and ^ is the priority of the hth downlink time slot of the jth carrier.

 15. The method of claim 12, further comprising:

 Obtain the arrival angle AOA of each carrier and UE in each slot in the current RNC.

 The method of claim 15, further comprising:

 According to the AOA of each carrier and each time slot UE, the interference of each time slot is corrected according to the beam scanning method GOB pattern.

 17. The method according to claim 16, wherein the TCP of the K UEs of the hth downlink slot of the jth carrier is processed in the following manner:

^TCP 'i,j,h,AOA ^{X Directiond} ― Coeff(AOA _ est _ik ) - PathLoss _ik )

, where: i subscript represents the current cell for interference coordination,

The shaping gain of the kth UE relative to the AOA of the cell i found on the GOB pattern; BRU_NUM _k refers to the number of BRUs occupied by the kth UE.

18. The method according to claim 17, wherein when determining the priority of the time slot according to the TCP, the following determination is made: N

^P j,h

 p

 N is the number of cells performing interference coordination, and ^ is the priority of the hth downlink time slot of the jth carrier.

 A method for accessing by slot priority ordering, characterized in that the time slot priority is determined by the method according to any one of claims 6 to 18, comprising the following steps:

 Blocking a downlink DL slot with a TCP interference value greater than a threshold in the current slow dynamic channel allocation SDCA slot priority queue;

 Accessing the UE according to the masked SDCA slot priority list;

 Decelerating the UE that fails the access, and accessing the UE after the deceleration according to the masked priority list of the SDCA slot;

 If the access fails after the speed reduction, all uplink UL time slots and DL time slots are reordered to obtain the time slot priority list, and the UE is accessed according to the obtained time slot priority list.

 20. The method according to claim 19, wherein the reordering all UL time slots and DL time slots comprises:

 All UL time slots and DL time slots are reordered according to the SDCA time slot queuing method; or all UL time slots and DL time slots are reordered according to different service occupied resources.

 A radio network controller, comprising:

 a measurement report module, configured to obtain a measurement report reported by the UE;

 a measurement result module, configured to obtain pilot measurement results of the source cell, the target cell, and other neighboring cells according to the measurement report;

 The interference cell determining module is configured to determine, according to the pilot measurement result, a cell that performs interference coordination.

The radio network controller according to claim 21, wherein the measurement result module is further configured to: when acquiring the measurement report reported by the UE, obtain the measurement report by one or a combination of the following manners: The measurement report is obtained by the same-frequency event reported by the UE during the handover, the measurement report is obtained by the inter-frequency event reported by the UE during the handover, and the measurement report is obtained by the internal measurement event reported by the UE during the handover.

 The radio network controller according to claim 21, wherein the interfering cell determining module is further configured to determine, in the cell that performs interference coordination according to the pilot measurement result, the neighboring cell i that satisfies the following formula is determined to be performed. Interference coordination cell:

PCCPCH _ RSCP _{T axg etCell} - PCCPCH _ RSCP _0therCell _ ₁ < S where:

PCCPCH _ RSCP _{Tw etCell} is the pilot measurement result value of the target cell, and PCCPCH _ RSCPo^c^ is the pilot measurement result value of the neighboring cell ^, which is the pilot difference between the target cell and the neighboring cell.

 The radio network controller according to any one of claims 21 to 23, wherein the interfering cell determining module is further configured to: when the cell that performs interference coordination according to the pilot measurement result does not include the source cell, The cell is added to the cell for interference coordination.

25, the radio network controller as claimed in claim 24, wherein the interference module is further configured to determine the cell guide pilot source cell CC by dead dead _{_} ^ O ^ geiCe _"- relative threshold switching processing.

 A radio network controller, characterized in that the cell for determining interference according to the method of any one of claims 1 to 5 determines the slot priority of the target cell, including:

a TCP acquisition module, configured to acquire each downlink time slot of each cell performing interference coordination

TCP;

 a priority determining module, configured to determine a time slot priority of the target cell according to the TCP.

 The radio network controller according to claim 26, wherein the TCP acquisition module is further configured to acquire the TCP from a storage area of the neighboring area information of the local RSPA.

28. The radio network controller of claim 26, wherein the TCP acquisition module is further configured to process the TCP in the following manner: TCP' _h = TCP _iih x W° TCP; _ih = TCPi _ih ^ When the PCCPCH transmit power of each cell is the same:

α _ι = {PCCPCH _ RSCP _l - PCCPCH _ RSCP _t ) Or, when the PCCPCH transmit power of each cell is different:

a _t = (PCCPCH _ RSCPi - PCCPCH _ Power, ) - {PCCPCH _ RSCP _t - PCCPCH _ Power _t ) , where:

The i subscript represents the current cell for interference coordination, the t subscript represents the target cell, and j and h represent the h th downlink time slot of the jth carrier of the cell respectively, representing the path loss of the i th channel for interference coordination. The weighting coefficient value, PCCPCH _RSCP is the pilot measurement result value, and PCCPOT_Pm^r represents the transmission power of _pccpCH .

 The radio network controller according to claim 28, wherein the priority determining module is further configured to: when determining the slot priority according to TCP, determine according to the following formula:

among them:

 i=\

N is the number of cells performing interference coordination, MaxTransPowe is the maximum transmit power of cell i, and ^ ^ is the priority of the hth downlink time slot of the jth carrier.

 30. The radio network controller of claim 28, wherein:

 The TCP acquisition module is further configured to acquire TCP of each downlink time slot of the target cell;

 The priority determining module is further configured to use the target cell and each cell that performs interference coordination

TCP determines the slot priority.

The radio network controller according to claim 30, wherein the priority determining module is further configured to: when determining the time slot priority according to the TCP, determine according to the following formula: MaxTransPow er _t MaxTransPow er _t +a _t

 10

 P =

j,h

 i=\

 , among them:

 N is the number of cells performing interference coordination, t represents the target cell, and MaxTransPower is the maximum transmit power of the cell, which is the priority of the hth downlink time slot of the jth carrier.

 The radio network controller according to claim 26, wherein the TCP acquisition module is further configured to acquire PCCPCH-RSCP information of all UEs connected under the current RNC; and obtain a path loss of each UE according to the following formula:

 PathLoss = PCCPCH Power - PCCPCH RSCP, where

PathLoss is the path loss of the UE, PCCPCH Power is the _PCCPCH transmit power, and PPCCPCH _RSCP is the pilot measurement result of ^.

 The radio network controller according to claim 32, wherein the TCP acquisition module is further configured to process the TCP of the K UEs of the hth downlink slot of the jth carrier in the following manner:

^TCP ^ =∑ k=\ ^{TCPj // _B RU— NUM k _k - ^PathL ° ^{SSi k )} , where:

The number of basic resource unit BRUs occupied by k UEs, and the i subscript represents the current cell for interference coordination.

 34. The radio network controller of claim 33, wherein the priority determining module is further configured to determine when a slot priority is determined according to TCP, as follows:

 N

/=1 ; where, p

 N is the number of cells performing interference coordination, and ^ is the priority of the hth downlink time slot of the jth carrier.

 The radio network controller according to claim 32, further comprising: an AOA acquiring module, configured to acquire an AOA of each carrier in each cell and a UE in each slot in the current RNC.

The radio network controller according to claim 35, wherein the TCP acquisition module is further configured to correct the interference of each time slot according to the GOB pattern according to each carrier, the AOA of the UE of each time slot.

 The radio network controller according to claim 36, wherein the TCP acquisition module is further configured to process TCP of the K UEs of the hth downlink slot of the jth carrier in the following manner:

^TCP 'i,j,h,AOA ^{X Directiond} ― Coeff(AOA _ est _ik ) - PathLoss _ik )

, where: i subscript represents the current cell for interference coordination,

The shaping gain of the kth UE relative to the AOA of the cell i found on the GOB pattern; BRU_NUM _k refers to the number of BRUs occupied by the kth UE.

 38. The radio network controller of claim 37, wherein the priority determining module is further configured to determine when a slot priority is determined according to TCP, as follows:

^P ji

Beans

 '八' p

 N is the number of cells performing interference coordination, and ^ is the priority of the hth downlink time slot of the jth carrier.

 A radio network controller, characterized in that the time slot priority is determined by the method according to any one of claims 6 to 18, comprising:

The masking module is configured to: in the current SDCA time slot priority queue, the masked TCP interference value is greater than Threshold DL time slot;

 a first access module, configured to access the UE according to the masked SDCA time slot priority list;

 The speed reduction module is configured to perform a speed reduction on the UE that fails the access, and access the UE after the deceleration according to the masked SDCA time slot priority list;

 The second access module is configured to re-order all UL time slots and DL time slots to obtain a time slot priority list if the access fails after the speed reduction, and then access the UE according to the obtained time slot priority list.

 40. The radio network controller of claim 39, wherein the second access module is configured to:

 All UL time slots and DL time slots are reordered according to the SDCA time slot queuing method; or all UL time slots and DL time slots are reordered according to different service occupied resources.