CN101527963B - Resource allocation method and system for realizing inter-cell interference control - Google Patents
Resource allocation method and system for realizing inter-cell interference control Download PDFInfo
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Abstract
The invention provides a resource allocation method for realizing inter-cell interference control, which comprises the following steps: A. establishing a corresponding relation between the position related information of the user terminal and the frequency point; B. and allocating resources for the user terminal according to the frequency point information corresponding to the terminal position related information. The invention also provides a resource allocation system for realizing the inter-cell interference control. The method and the system of the invention are adopted to optimize the resource allocation and updating process by combining the cell position information of the user terminal, thereby effectively controlling the interference among the cells and improving the capacity of the system.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a resource allocation method and system for implementing inter-cell interference control.
Background
In the current mobile communication system, in order to improve the Uplink access capability, FDD (frequency Division Duplex) and TDD (Time Division Duplex) introduce Uplink Enhanced (Enhanced Uplink) techniques successively in 3GPP (3rd Generation Partnership Project) Release6 and Release7, and introduce HSPA + (High Speed packet access) technique in Release7 to further optimize HSDPA/HSUPA (High Speed Downlink/Uplink packet access);
the HSUPA introduces the characteristic of N frequency points, that is, each cell is configured with a plurality of carrier frequencies. In a multi-frequency cell, if a cell overlapping manner is adopted, each cell (i.e., frequency point) has a set of independent resource allocation, and a whole set of common channels is allocated on each frequency point. This causes problems, for example: high cell code reuse rate, difficult cell search, complex terminal measurement, difficult handover, low system efficiency and the like. The N frequency point technology better solves the problem. One cell can configure multiple carrier frequencies, determine one of the carrier frequencies as a main carrier frequency, determine other carrier frequencies as auxiliary carrier frequencies, and only send common channels such as DwPTS (downlink pilot time slot) and broadcast information (TS0 time slot) on the main carrier frequency.
First, the following briefly describes each channel of LCR (Low Chip Rate) TDD HSUPA:
transmission channel: E-DCH and E-UCCH;
wherein, E-dch (enhanced differentiated Transport channel) is an enhanced transmission channel for carrying uplink service data; and the original information carried by the E-UCCH (E-DCH Uplink Control Channel) Uplink enhanced Uplink Control Channel is as follows:
an E-TFCI (E-DCH Transport Format Combination Indicator, E-DCH Transport Format set indication) comprises a data block length, can implicitly indicate a transmitted data modulation mode, and occupies 6 bits; HARQ ID (Hybrid Automatic Repeat Request identification, Hybrid Automatic Repeat Request process identification), indicating HARQ process number, occupying 2 bits; RSN (Retransmission Number, Retransmission sequence Number), which indicates the Number of transmissions, indicates the RV parameter implicitly, and occupies 2 bits;
and the information is transmitted on the E-UCCH after being coded by Reed Muller (32, 10).
Physical channel: E-RUCCH, E-AGCH, E-HICH and E-PUCH;
wherein, the E-RUCCH (E-DCH Random Access Uplink Control Channel ) includes SI (Scheduling Information) message and HSUPA ID number E-RNTI (E-DCH Radio Network Temporary Identity) of the UE, and is used for sending an Access request of the UE; an E-AGCH (E-DCH Absolute Grant Channel ), a downlink control Channel, and messages such as physical resources and power distributed to UE by a Node B (base station); an E-HICH (E-DCH HARQ Acknowledgement Indicator Channel ) carries an ACK/NAK (Acknowledgement/Negative Acknowledgement) message fed back by the Node B; an Enhanced Uplink Physical Channel (E-pucch) to which both the E-DCH and the E-UCCH are multiplexed.
In the current HSUPA system with N frequency points, for a UE, an RNC (radio network controller) allocates E-PUCH physical channel resources on a carrier and one or more E-AGCH and E-HICH control channels on the corresponding carrier to be monitored; in the current protocol, when the UE accesses the network, the capability information is reported to the network in the RRC Connection Setup Request and rrcconnectionsetup Complete signaling, and the network determines whether the UE supports HSUPA, informing Node B in Radio Link Setup request (RLR) or Radio Link Reconfiguration Prepare (RLR) signaling of NBAP to allocate E-PUCH shared resource pool and common E-AGCH/E-HICH control channel group information for the UE, informing Node B of E-AGCH/E-HICH control channel group allocated to UE monitor in Radio Link Setup Response (RLR) or Radio Link Reconfiguration Ready (RLR) to RNC, and informing UE of E-AGCH/E-HICH control channel group monitored in RRCConnection Setup or Radio Bearer Setup.
Specifically, the HSUPA receives the uplink data in the following receiving and transmitting process:
the Node B schedules the UE according to the SI reported by the UE, allocates corresponding Power resources (PRRI), time slot resources (TRRI), Code channel resources (CRRI), the Number of used E-UCCHs (ENI, E-UCCH Number Indicator), and feeds back the E-HICH channel Number (EI, E-HICH Indicator) where the ACK/NACK is located for the UE, and the Information is notified to the UE on the E-AGCH. The UE selects an E-TFC (E-DCH Transport Format Combination) according to the scheduling grant information of the Node B, and then transmits data, wherein the Size of a used TBS (Transport Block Size), HARQ information are transmitted on an E-TFCI (E-DCH Transport Format Combination Indicator), HARQ Process ID, and RSN are multiplexed with the E-DCH on the E-UCCH, and the number of transmitted E-UCCHs is a value indicated by the Node B through the ENI. After receiving the E-PUCH, the Node B combines a plurality of E-UCCHs and then decodes the E-UCCHs, performs HARQ soft combination on the service data according to the solved E-TFCI, HARQ Process ID and RSN, and then decodes the service data, and feeds back ACK/NACK to the UE on the E-HICH according to a CRC (Cyclic redundancy check) check result.
The HSUPA system has a very large span of variation in the size of the transport block, and may generate more or less interference to the neighboring cells according to the difference in the location of the UE in the cell, thereby affecting the capacity of the HSUPA system.
In summary, in the current HSUPA system with N frequency points, the HSUPA resources when the UE establishes the link are allocated by the RNC, and there is no mechanism for the UE to report the location of the cell where the UE is located in the current protocol, so that the RNC does not consider the difference between the locations of the cells where the UE is located when allocating the initial resources and subsequently allocating the resources, and thus the user of the edge cell after allocating the resources is likely to cause relatively large interference to the UE with the same frequency point in the neighboring cell. Even if the resource reconfiguration is then based on quality measurements or load situations, this requires a long period of statistics, which prevents the system from working optimally for the period of time during which the HSUPA service is initially ongoing.
Disclosure of Invention
In view of this, the present invention provides a resource allocation method and system for controlling inter-cell interference, which can optimize the resource allocation process, thereby more effectively controlling inter-cell interference and increasing system capacity.
In order to solve the above problems, the technical scheme provided by the invention is as follows:
a resource allocation method for realizing inter-cell interference control comprises the following steps:
A. establishing a corresponding relation between the position related information of the user terminal and the frequency point;
B. and allocating resources for the user terminal according to the frequency point information corresponding to the terminal position related information.
Correspondingly, the step a specifically includes:
a1, the base station receives the information related to the terminal position reported by the user terminal, then establishes the corresponding relation between the information related to the terminal position and different frequency points according to the number of frequency points supported by the cell, and sends the suggested frequency point information corresponding to the user terminal to the radio network controller RNC.
Correspondingly, the step a specifically includes:
a2, the base station calculates the position related information of the user terminal according to the received parameter information reported by the user terminal, then establishes the corresponding relation between the position related information and the frequency point according to the number of the frequency points supported by the cell, and sends the suggested frequency point information corresponding to the user terminal to the RNC.
Correspondingly, the method also comprises the step C:
and B, the base station measures the interference among the frequency points, adjusts the corresponding relation according to the measurement result in the preset time, sends the suggested frequency point information corresponding to the user terminal in the new corresponding relation to the RNC, and then executes the step B.
Correspondingly, the step a specifically includes:
aa. And the base station receives the information related to the terminal position reported by the user terminal and forwards the information to the RNC, and the RNC establishes a corresponding relation between the information related to the terminal position and different frequency points according to the number of the frequency points supported by the cell.
Correspondingly, the step a specifically includes:
ab. The base station calculates the position related information of the user terminal according to the received parameter information reported by the user terminal and sends the calculated position related information to the RNC; or the base station sends the received parameter information to the RNC, and the RNC calculates the position related information of the user terminal according to the parameter information; and then the RNC establishes the corresponding relation between the position related information and the frequency points according to the number of the frequency points supported by the cell.
Correspondingly, the method also comprises the step C:
and the RNC measures the interference among the frequency points, adjusts the corresponding relation according to the measurement result in the preset time, and allocates resources for the user terminal according to the frequency point information corresponding to the user terminal in the adjusted corresponding relation.
Correspondingly, the information related to the terminal position includes:
and when the user terminal initially accesses again, the path loss ratio relation SNPL between the cell and the adjacent cell is sent on the enhanced random access uplink control channel E-RUCCH, or the path loss information of the cell is sent on the uplink channel.
Correspondingly, the parameter information includes:
and the timing advance TA is sent by the user terminal on an uplink channel during initial access.
Correspondingly, the step B specifically includes:
and the RNC initiates a physical channel reconfiguration process to the terminal when the terminal is in a CELL _ DCH state when the terminal is accessed according to the frequency point information corresponding to the position related information of the terminal, initiates a radio bearer establishment process to the terminal when the terminal is in a non-CELL _ DCH state when the terminal is accessed, and allocates new high-speed uplink packet access resources to the terminal.
A resource allocation system implementing inter-cell interference control, comprising: a terminal and a network side device; wherein,
the terminal is used for reporting the position related information of the terminal or reporting the parameter information used for calculating the position related information to the network side equipment;
the network side equipment is used for establishing the corresponding relation between the position related information of the user terminal and the frequency point according to the received position related information or the parameter information used for calculating the position related information, and then distributing resources for the user terminal according to the frequency point information corresponding to the terminal position related information.
Correspondingly, the network side device further includes: a base station and an RNC; wherein
The base station is used for receiving information related to the terminal position reported by the user terminal, establishing a corresponding relation between the information related to the terminal position and different frequency points according to the number of the frequency points supported by a cell, and sending the frequency point information corresponding to the user terminal to the radio network controller RNC; or
The base station is used for calculating to obtain the position related information of the user terminal according to the received parameter information reported by the user terminal, establishing the corresponding relation between the position related information and the frequency point according to the number of the frequency points supported by the cell, and sending the frequency point information corresponding to the user terminal to the RNC;
and the RNC is used for distributing resources for the user terminal according to the received frequency point information corresponding to the terminal position related information.
Correspondingly, the base station can also be used for measuring the interference among the frequency points, adjusting the corresponding relation according to the measuring result in the preset time, and then sending the frequency point information corresponding to the user terminal in the new corresponding relation to the RNC.
Correspondingly, the base station is further configured to receive information related to the terminal location reported by the user terminal and forward the information to the RNC; the RNC is further used for establishing the corresponding relation between the terminal position related information and different frequency points according to the number of the frequency points supported by the cell; or,
the base station is further used for calculating the position related information of the user terminal according to the parameter information reported by the user terminal and sending the position related information to the RNC; the RNC is further used for establishing the corresponding relation between the position related information and the frequency points according to the number of the frequency points supported by the cell; or,
the base station is further used for sending the received parameter information to the RNC; the RNC is further used for calculating to obtain the position related information of the user terminal according to the given parameter information and then establishing the corresponding relation between the position related information and the frequency points according to the number of the frequency points supported by the cell;
correspondingly, the RNC is further configured to measure interference between the frequency points, adjust the correspondence according to the measurement result in the preset time, and allocate resources to the user terminal according to the frequency point information corresponding to the user terminal in the adjusted correspondence.
It can be seen that, by adopting the method and system of the present invention, the corresponding relationship between the position information and the frequency point of the user terminal is established, then the resource is allocated to the user terminal according to the frequency point corresponding to the position relationship of the user terminal, that is, the resource allocation process is optimized by combining the position information of the cell where the user terminal is located, and then the corresponding relationship is adjusted according to the measured interference so as to reallocate the resource to the terminal, thereby effectively controlling the inter-cell interference and improving the capacity of the system.
Drawings
FIG. 1A is a schematic flow chart of a method in an embodiment of the invention;
FIG. 1B is a schematic flow chart of yet another method in an embodiment of the present invention;
fig. 2 is a flow chart illustrating a method for establishing a corresponding relationship between base stations according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a strip-like correspondence between location relationships and frequency points in an embodiment of the present invention;
FIG. 4 is a diagram illustrating a sector-like correspondence between location relationships and frequency points in an embodiment of the present invention;
fig. 5 is a schematic flow chart of another method for establishing a corresponding relationship between base stations according to an embodiment of the present invention;
FIG. 6 is a flow chart of a method for establishing a corresponding relationship by an RNC in an embodiment of the present invention;
FIG. 7 is a flowchart illustrating another method for establishing a corresponding relationship by the RNC in the embodiment of the present invention;
fig. 8 is a schematic block diagram of a system in an embodiment of the invention.
Detailed Description
The basic idea of the present invention is to allocate resources to the user terminal according to the location information of the user terminal, that is, to optimize the resource allocation process by combining the location information of the cell where the user terminal is located, so as to effectively control the inter-cell interference and improve the capacity of the system.
To this end, the present invention provides a resource allocation method for implementing inter-cell interference control, as shown in fig. 1A, the method includes:
step 101: establishing a corresponding relation between the position related information of the user terminal and the frequency point;
step 102: and allocating resources for the user terminal according to the frequency point information corresponding to the terminal position related information.
Further, as shown in fig. 1B, the method further includes the following steps:
step 103: and B, measuring the interference among the frequency points, adjusting the corresponding relation according to the measurement result, and executing the step B according to the adjusted corresponding relation.
In order that those skilled in the art will better understand the present invention, the method of the present invention will be described in detail below with reference to the accompanying drawings and specific examples.
It should be noted that, in the embodiment of the present invention, the establishment of the correspondence between the location related information of the user terminal and the frequency point may be respectively completed by the base station or the RNC, and the allocation of resources is always operated by the RNC; the step of measuring the interference between the frequency points and adjusting the corresponding relationship according to the measurement result is a more optimized scheme (but not necessary) after the resources are allocated to the user, that is, the resources allocated to the user terminal can be updated by measuring the interference and adjusting the corresponding relationship, so that the interference is better controlled and the system capacity is improved; wherein, the interference of each frequency point measured corresponding to the establishment of the corresponding relation can also be respectively completed by the base station or the RNC, which is not described again; the following is detailed in terms of two aspects (base station or RNC), respectively;
taking a base station as an example, the method can be divided into two types according to information reported by a terminal received by the base station:
(1) if the information reported by the terminal is information related to the terminal location information, as shown in fig. 2, the method specifically includes:
step 201: a base station receives information related to a terminal position reported by a user terminal, establishes a corresponding relation between the information related to the terminal position and different frequency points according to the number of the frequency points supported by a cell, and sends the frequency point information corresponding to the user terminal to a Radio Network Controller (RNC);
step 202: allocating resources for the user terminal according to the frequency point information corresponding to the terminal position related information;
step 203: the base station measures the interference among the frequency points, adjusts the corresponding relation according to the measuring result in the preset time, and then sends the frequency point information corresponding to the user terminal in the new corresponding relation to the RNC;
the following examples illustrate:
example 1:
A. a Node B receives SNPL (the ratio relation between the path loss of a cell and the path loss of an adjacent cell) reported by E-RUCCH when UE is initially accessed, and establishes a corresponding relation between the SNPL index value and different frequency points according to the HSUPA frequency point number supported by the cell (because the SNPL contains or contains the position information of the UE, the corresponding relation can also be understood as the corresponding relation between the position information of the UE and the frequency points);
for example, one cell has three frequency points a, b and c, and simultaneously supports HSUPA; the range of the index value reported by the SNPL is 0-31; the UE with the SNPL index values of 0-10 is pre-allocated on the frequency point c, the UE with the SNPL index values of 11-21 is pre-allocated on the frequency point b, and the UE with the SNPL index values of 22-31 is pre-allocated on the frequency point a. Wherein a is the main frequency point, that is, different frequency points are covered by HSUPA band according to different radiuses, as shown in fig. 3, and the frequency point coverage of adjacent cells from inside to outside is b, c, a and c, a, b. Therefore, the UE at the same frequency point of the local area and the adjacent area is far away from each other, so that the interference to the adjacent area can be reduced; of course, the corresponding relationship may also be a sector corresponding relationship, as shown in fig. 4;
then Node B adds the suggested value of HSUPA frequency point (namely the frequency point information corresponding to SNPL index value in the corresponding relation) in the wireless link parameter updating signaling (RADIO LINK PARAMETER UPDATE INDICATION) according to the SNPL value information reported by UE, and reports to RNC;
B. then RNC initiates radio link reconfiguration Prepare procedure (RLReconfiguration Prepare) to Node B; when the UE is in a CELL _ DCH state when accessing HSUPA, the RNC initiates a Physical Channel Reconfiguration (Physical Channel Reconfiguration) process to the UE, and if the UE is in a non-CELL _ DCH state when accessing HSUPA, the RNC initiates a RB Setup (Radio Bearer Setup) process to the UE, thereby configuring new HSUPA resources to the UE.
C. Node B measures the interference or load of each frequency point, and adjusts the corresponding relation between SNPL index value and frequency point according to the measuring result in a Period of time T _ Period; then, a new corresponding relation is applied to the newly accessed UE to suggest frequency points; for example, as shown in the above a, after a period of time, if the interference of the carrier c is large or the load is heavy, the Node B adjusts the corresponding relationship: the SNPL index value is 0-8 corresponding to the frequency point c, the SNPL index value is 9-20 corresponding to the frequency point b, and the SNPL index value is 21-31 corresponding to the frequency point a; the time T _ Period value is a preset value, and may be changed according to user requirements or system performance requirements, which is not described herein again.
Example 2:
A. node B receives the path loss information of the local area reported on the uplink channel when UE initially accesses, and establishes a band-shaped corresponding relation (or a sector corresponding relation) between different path loss intervals and different frequency points according to HSUPA frequency point numbers supported by the cell; then Node B adds the suggested value of HSUPA frequency point (i.e. frequency point information corresponding to the path loss of the local area) in the wireless link parameter updating signaling according to the path loss information reported by UE, and reports to RNC;
B. then RNC initiates RL Reconfiguration Prepare process to Node B; when the UE is in a CELL _ DCH state when accessing HSUPA, the RNC initiates a Physical channel reconfiguration process to the UE, and if the UE is in a non-CELL _ DCH state when accessing HSUPA, the RNC initiates an RB Setup process to the UE, thereby configuring new HSUPA resources to the UE;
C. node B measures the interference or load of each frequency point, and adjusts the corresponding relation between the path loss interval and the frequency point according to the measuring result in a Period of time T _ Period; and then, the new corresponding relation is applied to the newly accessed UE to suggest frequency points, so that the RNC can allocate resources for the UE again.
(2) If the information reported by the terminal is parameter information used for calculating the position-related information, as shown in fig. 5, the method specifically includes:
step 501: the base station calculates according to the received parameter information reported by the user terminal to obtain the position related information of the user terminal, establishes the corresponding relation between the position related information and the frequency point according to the number of the frequency points supported by the cell, and sends the frequency point information corresponding to the user terminal to the RNC;
step 502: allocating resources for the user terminal according to the frequency point information corresponding to the terminal position related information;
step 503: the base station measures the interference among the frequency points, adjusts the corresponding relation according to the measuring result in the preset time, and then sends the frequency point information corresponding to the user terminal in the new corresponding relation to the RNC;
the following examples illustrate:
example 3:
A. a Node B receives TA (timing advance) information reported on an uplink channel when UE is initially accessed, and obtains the position information of the UE by adopting a related positioning algorithm according to the TA and DOA (direction of incoming waves) and AOA (Angle of Arrival) measurement parameters of an antenna array (the algorithm can adopt the algorithm in the prior art and is not repeated), and establishes corresponding relations between the position information and different frequency points according to HSUPA frequency point numbers supported by a cell; the corresponding relation can be a strip-shaped corresponding relation or a corresponding relation of different sectors of the frequency point; then Node B adds the suggested value of HSUPA frequency point (namely the frequency point information corresponding to the position information of UE) in RADIO LINK PARAMETER UPDATE INDICATION according to the obtained position information of UE, and reports to RNC;
B. then RNC initiates RL Reconfiguration Prepare process to Node B; when the UE is in a CELL _ DCH state when accessing HSUPA, the RNC initiates a Physical channel reconfiguration process to the UE, and if the UE is in a non-CELL _ DCH state when accessing HSUPA, the RNC initiates an RB Setup process to the UE, thereby configuring new HSUPA resources to the UE;
C. node B measures the interference or load of each frequency point, and adjusts the corresponding relation between the position information and the frequency point according to the measuring result in a Period of time T _ Period; and then applying a new corresponding relation to the newly accessed UE to suggest frequency points.
Taking RNC as an example, the information reported by the terminal received by the base station can be divided into two types:
(1) if the information reported by the terminal is information related to the terminal location information, as shown in fig. 6, the method specifically includes:
step 601: the base station receives the information related to the terminal position reported by the user terminal and forwards the information to the RNC, and the RNC establishes a corresponding relation between the information related to the terminal position and different frequency points according to the number of the frequency points supported by the cell;
step 602: allocating resources for the user terminal according to the frequency point information corresponding to the terminal position related information;
step 603: and the RNC measures the interference among the frequency points, adjusts the corresponding relation according to the measurement result in the preset time, and allocates resources for the user terminal according to the frequency point information corresponding to the user terminal in the adjusted corresponding relation.
Specifically, the following examples are given:
example 4:
A. node B receives SNPL reported on E-RUCCH when UE initially accesses, and submits SNPL to RNC in RADIO LINK PARAMETER UPDATE INDICATION; the RNC establishes a corresponding relation between the SNPL index value and different frequency points according to the HSUPA frequency point number supported by the cell;
B. then RNC initiates RLReconfiguration Prepare process to Node B according to SNPL value reported by UE; when the UE is in a CELL _ DCH state when accessing HSUPA, the RNC initiates a Physical Channel Reconfiguration process to the UE, and if the UE is in a non-CELL _ DCH state when accessing HSUPA, the RNC initiates an RB Setup process to the UE, thereby configuring new HSUPA resources to the UE;
C. RNC measures the interference or load of each frequency point, and adjusts the corresponding relation between SNPL index value and frequency point according to the measuring result in a Period of time T _ Period; the new correspondence is then applied to the newly accessed UE to allocate resources.
Example 5:
A. node B receives the path loss information of the local area reported on the uplink channel when UE initially accesses, and submits the path loss information to RNC in RADIO LINK PARAMETER UPDATE INDICATION; the RNC establishes a corresponding relation between the path loss information and different frequency points according to the HSUPA frequency point number supported by the cell;
B. then RNC initiates RLReconfiguration Prepare process to Node B according to path loss information reported by UE; when the UE is in a CELL _ DCH state when accessing HSUPA, the RNC initiates a Physical Channel Reconfiguration process to the UE, and if the UE is in a non-CELL _ DCH state when accessing HSUPA, the RNC initiates an RB Setup process to the UE, thereby configuring new HSUPA resources to the UE;
C. RNC measures the interference or load of each frequency point, and adjusts the corresponding relation between the path loss interval and the frequency point according to the measuring result in a Period of time T _ Period; the new correspondence is then applied to the newly accessed UE to allocate resources.
(2) If the information reported by the terminal is parameter information used for calculating the position-related information, as shown in fig. 7, the method specifically includes:
step 701: the base station calculates the position related information of the user terminal according to the received parameter information reported by the user terminal and sends the calculated position related information to the RNC; or the base station sends the received parameter information to the RNC, and the RNC calculates the position related information of the user terminal according to the parameter information; then the RNC establishes a corresponding relation between the position related information and the frequency points according to the number of the frequency points supported by the cell;
step 702: allocating resources for the user terminal according to the frequency point information corresponding to the terminal position related information;
step 703: and the RNC measures the interference among the frequency points, adjusts the corresponding relation according to the measurement result in the preset time, and allocates resources for the user terminal according to the frequency point information corresponding to the user terminal in the adjusted corresponding relation.
Specifically, the following examples are given:
example 6:
A. node B receives TA reported on the uplink channel when UE initially accesses, and obtains the position information of UE by adopting a relevant positioning algorithm according to the TA and DOA and AOA measurement parameters of the antenna array, and then submits the position information of UE to RNC in RADIO LINK PARAMETER UPDATE INDICATION; or Node B does not calculate the position information, only submits TA, DOA and AOA parameters to RNC in RADIO LINK PARAMETER UPDATE INDICATION, and RNC obtains the position information of UE according to the related positioning algorithm; wherein, the related algorithm can adopt the algorithm in the prior art, and is not described again;
then, the RNC establishes a corresponding relation between the position information and different frequency points according to the HSUPA frequency point number supported by the cell, and of course, the corresponding relation can be a strip-shaped corresponding relation or a sector corresponding relation;
B. RNC calculates the position information according to the position information of UE reported by Node B, or TA, DOA and AOA reported by Node B, then initiates RLReconfiguration Prepare process to Node B; when the UE is accessed to the HSUPA and is in a CELL _ DCH state, the RNC initiates a Physical Channel Reconfiguration process to the UE, and if the UE is accessed to the HSUPA and is in a non-CELL _ DCH state, the RNC initiates an RB Setup process to the UE, so that new HSUPA resources are configured to the UE.
C. RNC measures the interference or load of each frequency point, and adjusts the corresponding relation between the position information and the frequency point according to the measuring result in a Period of time T _ Period; the new correspondence is then applied to the newly accessed UE to allocate resources.
It can be seen that, by adopting the method of the present invention, the relevant HSUPA resources are allocated to the UE according to the position information of the UE, thereby effectively reducing the inter-cell interference in the initial resource allocation, optimizing the system transmission and improving the system capacity.
It will be understood by those skilled in the art that all or part of the steps in the method for implementing the above embodiments may be implemented by hardware associated with program instructions, and the program is stored in a specific storage medium.
Based on the above idea, embodiment 7 of the present invention further provides a resource allocation system for implementing inter-cell interference control, as shown in fig. 8, the system includes: a terminal 801 and a network side device 802; the terminal 801 is configured to report location-related information of the terminal or report parameter information used to calculate the location-related information to the network side device 802;
the network side device 802 is configured to establish a corresponding relationship between the location related information of the user terminal 801 and the frequency point according to the received location related information or the parameter information used for calculating the location related information, and then allocate resources to the user terminal 801 according to the frequency point information corresponding to the location related information of the terminal 801.
It should be noted that the network side device further includes: a base station and an RNC; wherein
The base station is used for receiving information related to the terminal position reported by the user terminal, establishing a corresponding relation between the information related to the terminal position and different frequency points according to the number of the frequency points supported by a cell, and sending the frequency point information corresponding to the user terminal to the radio network controller RNC; or
The base station is used for calculating to obtain the position related information of the user terminal according to the received parameter information reported by the user terminal, establishing the corresponding relation between the position related information and the frequency point according to the number of the frequency points supported by the cell, and sending the frequency point information corresponding to the user terminal to the RNC;
and the RNC is used for distributing resources for the user terminal according to the received frequency point information corresponding to the terminal position related information.
In addition, the base station can be used for measuring the interference among the frequency points, adjusting the corresponding relation according to the measuring result in the preset time, and then sending the frequency point information corresponding to the user terminal in the new corresponding relation to the RNC.
In addition, the base station is further configured to receive information related to the terminal location reported by the user terminal and forward the information to the RNC; the RNC is further used for establishing the corresponding relation between the terminal position related information and different frequency points according to the number of the frequency points supported by the cell; or,
the base station is further used for calculating the position related information of the user terminal according to the parameter information reported by the user terminal and sending the position related information to the RNC; the RNC is further used for establishing the corresponding relation between the position related information and the frequency points according to the number of the frequency points supported by the cell; or,
the base station is further used for sending the received parameter information to the RNC; the RNC is further used for calculating to obtain the position related information of the user terminal according to the given parameter information and then establishing the corresponding relation between the position related information and the frequency points according to the number of the frequency points supported by the cell;
in addition, the RNC is further configured to measure interference between the frequency points, adjust the correspondence according to a measurement result within a preset time, and allocate resources to the user terminal according to the frequency point information corresponding to the user terminal in the adjusted correspondence.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (15)
1. A resource allocation method for realizing inter-cell interference control is characterized by comprising the following steps:
A. establishing a corresponding relation between the position related information of the user terminal and the frequency point;
B. and allocating resources for the user terminal according to the frequency point information corresponding to the terminal position related information.
2. The method according to claim 1, wherein the step a specifically comprises:
a1, the base station receives the information related to the terminal position reported by the user terminal, then establishes the corresponding relation between the information related to the terminal position and different frequency points according to the number of the frequency points supported by the cell, and sends the frequency point information corresponding to the user terminal to the radio network controller RNC.
3. The method according to claim 1, wherein the step a specifically comprises:
a2, the base station calculates the position related information of the user terminal according to the received parameter information reported by the user terminal, then establishes the corresponding relation between the position related information and the frequency point according to the number of the frequency points supported by the cell, and sends the frequency point information corresponding to the user terminal to the RNC.
4. A method according to any one of claims 2 to 3, characterized in that the method further comprises step C:
and B, the base station measures the interference among the frequency points, adjusts the corresponding relation according to the measurement result in the preset time, sends the frequency point information corresponding to the user terminal in the new corresponding relation to the RNC, and then executes the step B.
5. The method according to claim 1, wherein the step a specifically comprises:
aa. And the base station receives the information related to the terminal position reported by the user terminal and forwards the information to the RNC, and the RNC establishes a corresponding relation between the information related to the terminal position and different frequency points according to the number of the frequency points supported by the cell.
6. The method according to claim 1, wherein the step a specifically comprises:
ab. The base station calculates the position related information of the user terminal according to the received parameter information reported by the user terminal and sends the calculated position related information to the RNC; or the base station sends the received parameter information to the RNC, and the RNC calculates the position related information of the user terminal according to the parameter information; and then the RNC establishes the corresponding relation between the position related information and the frequency points according to the number of the frequency points supported by the cell.
7. The method according to any one of claims 5 to 6, characterized in that the method further comprises a step C:
and the RNC measures the interference among the frequency points, adjusts the corresponding relation according to the measurement result in the preset time, and allocates resources for the user terminal according to the frequency point information corresponding to the user terminal in the adjusted corresponding relation.
8. The method according to any one of claims 3 or 5, wherein the information related to the terminal position comprises:
and the user terminal sends the path loss ratio relation SNPL between the cell and the adjacent cell on an enhanced random access uplink control channel E-RUCCH during initial access, or sends the path loss information of the cell on an uplink channel.
9. The method of claim 6, wherein the parameter information comprises:
and the timing advance TA is sent by the user terminal on an uplink channel during initial access.
10. The method according to claim 1, wherein step B specifically comprises:
and the RNC initiates a physical channel reconfiguration process to the terminal when the terminal is in a CELL _ DCH state when the terminal is accessed according to the frequency point information corresponding to the position related information of the terminal, initiates a radio bearer establishment process to the terminal when the terminal is in a non-CELL _ DCH state when the terminal is accessed, and allocates new high-speed uplink packet access resources to the terminal.
11. A resource allocation system for implementing inter-cell interference control, comprising: a terminal and a network side device; wherein,
the terminal is used for reporting the position related information of the terminal or reporting the parameter information used for calculating the position related information to the network side equipment;
the network side equipment is used for establishing the corresponding relation between the position related information of the user terminal and the frequency point according to the received position related information or the parameter information used for calculating the position related information, and then distributing resources for the user terminal according to the frequency point information corresponding to the terminal position related information.
12. The system of claim 11, wherein the network-side device further comprises: a base station and an RNC; wherein
The base station is used for receiving information related to the terminal position reported by the user terminal, establishing a corresponding relation between the information related to the terminal position and different frequency points according to the number of the frequency points supported by a cell, and sending the frequency point information corresponding to the user terminal to the radio network controller RNC; or
The base station is used for calculating to obtain the position related information of the user terminal according to the received parameter information reported by the user terminal, establishing the corresponding relation between the position related information and the frequency point according to the number of the frequency points supported by the cell, and sending the frequency point information corresponding to the user terminal to the RNC;
and the RNC is used for distributing resources for the user terminal according to the received frequency point information corresponding to the terminal position related information.
13. The system of claim 12, wherein:
the base station can also be used for measuring the interference among the frequency points, adjusting the corresponding relation according to the measuring result in the preset time, and then sending the frequency point information corresponding to the user terminal in the new corresponding relation to the RNC.
14. The system of claim 12, wherein:
the base station is further used for receiving the information which is reported by the user terminal and is related to the terminal position and forwarding the information to the RNC; the RNC is further used for establishing the corresponding relation between the terminal position related information and different frequency points according to the number of the frequency points supported by the cell; or,
the base station is further used for calculating the position related information of the user terminal according to the parameter information reported by the user terminal and sending the position related information to the RNC; the RNC is further used for establishing the corresponding relation between the position related information and the frequency points according to the number of the frequency points supported by the cell; or,
the base station is further used for sending the received parameter information to the RNC; and the RNC is further used for calculating to obtain the position related information of the user terminal according to the parameter information and establishing the corresponding relation between the position related information and the frequency points according to the number of the frequency points supported by the cell.
15. The system of claim 14, wherein:
and the RNC is further used for measuring the interference among the frequency points, adjusting the corresponding relation according to the measurement result in the preset time, and distributing resources for the user terminal according to the frequency point information corresponding to the user terminal in the adjusted corresponding relation.
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| CN102098773A (en) * | 2009-12-11 | 2011-06-15 | 中兴通讯股份有限公司 | TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) system and method for coordinating intercell interferences |
| CN102164379B (en) * | 2010-02-23 | 2015-06-10 | 中兴通讯股份有限公司 | Method and device for adjusting frequency |
| CN102202404B (en) * | 2010-03-23 | 2015-01-21 | 华为技术有限公司 | Method and equipment for scheduling radio resource |
| CN102469568A (en) * | 2010-11-03 | 2012-05-23 | 大唐移动通信设备有限公司 | Information notification and timing advance acquisition method, system and equipment |
| CN102448069B (en) * | 2011-12-31 | 2014-05-21 | 京信通信系统（中国）有限公司 | Soft frequency multiplexing method, device and base station based on cognitive technology |
| WO2014146254A1 (en) * | 2013-03-19 | 2014-09-25 | Qualcomm Incorporated | Method and apparatus for optimizing snpl reporting |
| CN103648121A (en) * | 2013-12-26 | 2014-03-19 | 中国电子科技集团公司第四十一研究所 | Method for signal detection of mobile terminal and monitoring of terminal equipment and device |
| CN104170309B (en) * | 2014-02-27 | 2017-03-15 | 华为技术有限公司 | A kind of method for managing resource and device |
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| CN1750513A (en) * | 2005-10-21 | 2006-03-22 | 中兴通讯股份有限公司 | Method for realizing high speed downward block service in multiple frequency spot TD-SCDMA system |
| EP1819118A2 (en) * | 2006-02-11 | 2007-08-15 | Samsung Electronics Co., Ltd. | Method and apparatus for allocating transmission resources and signaling the allocated transmission resources for frequency diversity |
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