WO2012079344A1

WO2012079344A1 - Method and base station for scheduling and allocating resources in orthogonal frequency division multiplexing system

Info

Publication number: WO2012079344A1
Application number: PCT/CN2011/075340
Authority: WO
Inventors: 罗薇; 鲁照华; 刘锟; 李卫敏
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-12-13
Filing date: 2011-06-03
Publication date: 2012-06-21
Also published as: CN102045857B; CN102045857A

Abstract

A method and a base station for scheduling and allocating resources in an orthogonal frequency division multiplexing system are disclosed in the present invention. The method includes the following steps: three uncrossed sets F1, F2 and F3, which are provided for utilizing by each sector of three adjacent sectors, are selected from the total number of minimum time-frequency resources supplying for scheduling and using by a terminal, and a weak interference domain and a strong interference domain of the three adjacent sectors are separately set by utilizing the sets F1, F2 and F3 (S102); then the types of terminal users are judged by the base station, according to the types of terminal users, the time-frequency resources of the weak interference domain or the strong interference domain corresponding to the types of terminal users are allocated, wherein, the types of terminal users contain central users and edge users (S104). With the application of the present invention, interferences among adjacent sectors are suppressed, and system processing capability and performance are improved.

Description

TECHNICAL FIELD The present invention relates to the field of communications, and in particular, to a method for scheduling and allocating resources in an Orthogonal Frequency Division Multiplexing (OFDM) system. And base station. BACKGROUND OF THE INVENTION In a data transmission system in which a base station performs scheduling control, scheduling allocation of all resources of a system is usually performed by a base station, for example, a resource allocation situation when a base station performs downlink transmission, and a resource situation that can be used when the terminal performs uplink transmission. These are all scheduled and allocated by the base station. In an OFDM system, when downlink data transmission is performed between a base station and a different terminal in the same sector, since these downlinks are orthogonal to each other, it is possible to avoid a sector within a sector. However, the downlink between different sectors may not be orthogonal, and therefore, each terminal may be subject to downlink interference from base stations of other adjacent sectors, i.e., inter-sector interference. If the interference between the sectors is severe, the system capacity will be reduced, especially the transmission capacity of the sector edge users, which will affect the coverage capability of the system and the performance of the terminal. In order to overcome inter-sector interference and ensure a certain bandwidth utilization, the interference coordination technique in the time-frequency domain can be used to allocate different sub-band resources to the edge terminals (ie, edge users), to reduce the number of sectors between the four sectors. strength. At present, the time-frequency domain coordination technology can be divided into static, semi-static and dynamic time-frequency domain resource coordination, wherein resource coordination can be falsified according to changes in load and service characteristics between sectors. For static mode, the period of resource allocation is generally calculated in months and days. For semi-static mode, the period of resource allocation is generally performed in minutes. For dynamic coordination mode, the period of resource allocation is generally in seconds. get on. Since the dynamic mode requires a large amount of measurement and information reporting, and requires frequent real-time communication between multiple sectors, it is generally not used in practical systems. It can be seen that in the related art, the static mode cannot be adjusted according to the load change between sectors in time, and the time-frequency domain resources used by some sectors for edge users are not scheduled to be used, and other sectors are used for edge users. The time-frequency domain resources are seriously insufficient, and the real-time measurement of the dynamic mode causes a great deal of overhead. SUMMARY OF THE INVENTION A main object of the present invention is to provide a scheduling and allocation scheme for resources in an OFDM system, so as to at least solve the problem that the time-frequency domain resource allocation in the sector is uneven or the dynamic mode overhead is caused by the static method in the related art. Big problem. In order to achieve the above object, in one aspect of the present invention, a method for scheduling allocation of resources in an orthogonal frequency division multiplexing system is provided. The method for scheduling allocation of resources in an orthogonal frequency division multiplexing system according to the present invention includes the following steps: taking three non-interleaving sets F1, F2, and F3 from the total number of minimum time-frequency resources available for terminal scheduling for three Each sector in the adjacent sector is used, and the low-interference time-frequency region and the high-interference time-frequency region of three adjacent sectors are respectively set using the sets F1, F2, and F3; and the base station determines the type of the terminal user, And the time-frequency resources in the corresponding time-frequency zone or the high-frequency 4th time-frequency zone are allocated according to the type of the terminal user, wherein the types of the terminal users include the central user and the edge user. Preferably, setting the low-interference time-frequency region and the high-interference time-frequency region of three adjacent sectors by using the sets F1, F2, and F3 respectively includes: setting low-interference of three adjacent sectors T1, T2, and T3 The time-frequency regions are respectively set F1, F2 and F3, and the high-thirty-fourth time-frequency region of the sector T1 is the set F2 and F3, and the high-thirth-fourth time-frequency region of the sector T2 is the set F3 and F1, the sector T3 The high-thousand-fourth time-frequency zone is the set F1 and F2. Preferably, the time-frequency resources in the corresponding time-frequency zone or the high-frequency 4th time-frequency zone are allocated according to the type of the terminal user, including: in the case that the terminal user is the edge user of the sector in which the terminal user is located The base station preferentially allocates time-frequency resources in the sector of the sector in which the terminal user is located; in the case that the terminal user is the central user of the sector in which the terminal user is located, the base station allocates the sector of the sector to the terminal user. Time-frequency resources in the high-frequency interference time-frequency region. Preferably, the edge user is divided into a first edge user, a second edge user, and a third edge user, wherein the sectors T2 and T3 are the first adjacent sector and the second adjacent sector of the sector T1, respectively. The regions T3 and T1 are the first adjacent sector and the second adjacent sector of the sector T2, respectively, and the sectors T1 and T2 are the first adjacent sector and the second adjacent sector of the sector T3, respectively; Within one sector, an edge user close to its first adjacent sector is a first edge user; an edge user close to its second adjacent sector is a second edge user; with its first adjacent sector and second phase The edge users whose neighboring sectors are close to each other are the third edge users. Preferably, the determining, by the base station, the type of the terminal user includes: the base station's feedback information of the terminal user and the threshold value thereof determine the central user or the edge user of the sector in which the terminal user is located, wherein, the feedback The information includes at least one of the following: Received signal strength indication RSSI information, signal to interference noise ratio SINR, signal and interference ratio SIR; in case the end user is an edge user of the sector in which the terminal is located, the base station is based on the end user The geographic location determines that the end user is at least one of the following: a first edge user, a second edge user, and a third edge user. Preferably, before the base station determines the type of the terminal user, the method further includes: the terminal user calculating a path loss pl of the first adjacent sector of the sector in which the sector is located to the end user, and a path loss of the second adjacent sector to the end user P2 and the path loss of the end user service sector to the end user; if the pl/p is less than or equal to the predetermined threshold and the p2/p is greater than the predetermined threshold, the terminal user sends the identifier information indicating the first edge user to the base station; When p2/p is less than or equal to a predetermined threshold and pl/p is greater than a predetermined threshold, the terminal user sends identification information for indicating the second edge user to the base station; if both pl/p and p2/p are less than or equal to a predetermined threshold, the terminal The user sends the identification information for indicating the third edge user to the base station; if both p 1/p and p2/p are greater than the predetermined threshold, the terminal user sends the identification information for indicating the central user to the base station. Preferably, the time-frequency resources allocated in the corresponding time-frequency zone or the high-frequency 4th time-frequency zone according to the type of the terminal user include: the user of the first edge of the sector in which the terminal user is located In this case, the base station preferentially allocates the time-frequency resources in the sector of the sector in the sector of the time-frequency region of the sector, and allocates the packets in the reverse order from the termination position of the sector; In the case of the second edge user of the sector in which it is located, the base station preferentially allocates time-frequency resources in the low-interference time-frequency region of the sector in which the terminal user is located, and starts from the start position of the low-interference time-frequency region. In the case where the end user is the third edge user of the sector in which the terminal user is located, the base station allocates only the time-frequency resources in the low-interference time-frequency region of the sector in which the terminal user is located; In the case of a central user of the sector in which the sector is located, the base station allocates time-frequency resources in the high-frequency 4th time-frequency region of the sector in which it is located. Preferably, in the case that the end user is the first edge user of the sector in which the terminal user is located, the base station starts from the termination position of the 时4 00 time-frequency region, and the reverse-order allocation includes: the base station from the terahertz octave frequency region The termination position starts with the first preset position as the end, and the allocation is performed in reverse order; in the case that the end user is the second edge user of the sector in which the terminal user is located, the base station starts from the start position of the low-interference time-frequency region, The sequential allocation includes: the base station starts from the starting position of the low-interference time-frequency region, and ends with the second preset position as an end. Preferably, in the case that the end user is the central user of the sector in which the terminal user is located, the base station allocates time-frequency resources in the high-frequency 4th time-frequency region of the sector in which the terminal user belongs: the base station from the sector of the terminal user The center position of the high-frequency 4 octave frequency region begins, and the time-frequency resources are allocated to the end users in both forward and reverse directions. In order to achieve the above object, according to another aspect of the present invention, a base station is also provided. The base station according to the present invention includes: an obtaining module, configured to take three non-interleaving sets F1, F2, and F3 from a total number of minimum time-frequency resources available for scheduling by the terminal for each of three adjacent sectors The configuration module is configured to set a low-interference time-frequency zone and a high-interference time-frequency zone of three adjacent sectors by using the sets F1, F2, and F3, respectively; the determining module is set to determine the type of the terminal user, where The type of the end user includes a central user and an edge user; and an allocation module is configured to allocate the time frequency in the corresponding 4th time zone or the high frequency 4th time frequency zone according to the type of the terminal user determined by the determination module Resources. According to the present invention, the time-frequency resources are allocated according to the type of the terminal user, and the time-frequency resources are utilized to the maximum extent in a static or semi-static manner, thereby avoiding the use of edge users of adjacent sectors. The case of the same time-frequency resource solves the problem that the static frequency method causes the time-frequency domain resource allocation of the edge users in the sector to be uneven or the dynamic mode overhead is large, and the interference between adjacent sectors is suppressed and improved. The processing power and performance of the system. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 1 is a flowchart of a method for scheduling allocation of resources in an orthogonal frequency division multiplexing system according to an embodiment of the present invention; FIG. 2 is a structural block diagram of a base station according to an embodiment of the present invention; FIG. 4 is a schematic diagram of time-frequency sets F1, F2, and F3 according to a preferred embodiment of the present invention; FIG. 5 is a time-frequency according to a preferred embodiment of the present invention. FIG. Schematic diagram of collective positive sequence and reverse order; FIG. 6 is a schematic diagram of a low-interference region start position index, a stop position index, and a high-interference region center position index of three sectors according to a preferred embodiment of the present invention; FIG. Schematic diagram of the priority order of the resource blocks selected by the first edge user and the second edge user of the preferred embodiment of the present invention; 8 is a flowchart of a method for scheduling allocation of resources in an OFDM system according to Example 1 of the present invention; FIG. 9 is a schematic diagram showing a priority order of resource blocks selected by a first edge user and a second edge user according to Example 4 of the present invention; And FIG. 10 is a schematic diagram of time-frequency sets F1, F2, F3, and F4 according to Example 5 of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. According to an embodiment of the present invention, a scheduling allocation method for resources in an orthogonal frequency division multiplexing system is provided. 1 is a flowchart of a method for scheduling allocation of resources in an orthogonal frequency division multiplexing system according to an embodiment of the present invention. As shown in FIG. 1, the method includes the following steps: Step S102: Minimum time frequency available for scheduling by a terminal Among the total resources, three non-interleaved sets F1, F2, and F3 are used for each of the three adjacent sectors, and the low-interference time of three adjacent sectors is set using the sets F1, F2, and F3, respectively. a frequency zone and a high-interference time-frequency zone; and in step S104, the base station determines the type of the terminal user, and allocates the corresponding time-frequency zone or the high-frequency 4th time-frequency zone according to the type of the terminal user. Time-frequency resources, wherein the types of end users include central users and edge users. Through the above steps, the time-frequency resources are allocated according to the type of the terminal user, and the time-frequency resources are utilized to the maximum extent in a static or semi-static manner, thereby avoiding the use of edge users of adjacent sectors. The case of the same time-frequency resource solves the problem that the static frequency method causes the time-frequency domain resource allocation of the edge users in the sector to be uneven or the dynamic mode overhead is large, and the interference between adjacent sectors is suppressed and improved. The processing power and performance of the system. Preferably, in step S102, setting the low-interference time-frequency region and the high-interference time-frequency region of three adjacent sectors by using the sets F1, F2, and F3 respectively includes: setting three adjacent sectors T1, Τ2 The low-th 4th time-frequency region of Τ3 is the set F1, F2, and F3, respectively, and the high-thirty-fourth time-frequency region of the sector T1 is the set F2 and F3, and the high-interference time-frequency region of the sector T2 is the set F3. And F1, the high-interference time-frequency region of the sector T3 is the set F1 and F2. The method allocates different 氐4 4 OFDM regions to three adjacent sectors, that is, the low-interference time-frequency resources used by each of the three sectors do not cross each other, but for one sector In addition to the low-interference time-frequency region, the sets Fl, F2, and F3 are high-interference time-frequency regions, which can reduce inter-sector interference. Preferably, in step S104, the time-frequency resources in the low-interference time-frequency zone or the high-interference time-frequency zone corresponding to the end user are allocated according to the type of the terminal user, including: at the edge user of the sector in which the terminal user is located In case, the base station preferentially allocates time-frequency resources in the low-interference time-frequency zone of the sector in which the terminal user is located; in the case that the terminal user is the central user of the sector in which the terminal user is located, the base station allocates the sector in which the terminal user belongs. Time-frequency resources in the high-frequency interference time-frequency region. This will help improve the order and relevance of the system. Preferably, the edge user may be divided into a first edge user, a second edge user, and a third edge user, where the sectors T2 and T3 are the first adjacent sector and the second adjacent sector of the sector T1, respectively. The sectors T3 and T1 are the first adjacent sector and the second adjacent sector of the sector T2, respectively, and the sectors T1 and T2 are the first adjacent sector and the second adjacent sector of the sector T3, respectively. Within one sector, an edge user close to its first adjacent sector is a first edge user; an edge user close to its second adjacent sector is a second edge user; with its first adjacent sector and The edge users whose two adjacent sectors are close to each other are the third edge users. The method divides the edge users into three categories, which is beneficial to different time-frequency resources allocated for different users when allocating time-frequency resources, thereby improving the flexibility of the system. Preferably, in step S104, the determining, by the base station, the type of the terminal user includes: the base station can determine the central user or the edge user of the sector in which the terminal user is located according to the feedback information of the terminal user and the threshold value thereof, wherein the feedback is The information includes at least one of the following: Received Signal Strength Indication (RSSI) information, Signal to Interference plus Noise Ratio (SINR), and Signal to Interference Ratio (Sign) To Interference Ratio (SIR); in the case that the end user is the edge user of the sector in which the terminal user is located, the base station can determine that the terminal user is at least one of the following according to the geographical location of the terminal user: First edge user, Two edge users, third edge users. The method is simple to implement and has high operability. Preferably, before step S104, the terminal user calculates the path loss p 1 of the first adjacent sector of the sector to which the terminal is located, the path loss p2 of the second adjacent sector to the end user, and the end user service fan. If the pl/p is less than or equal to the predetermined threshold and p2/p is greater than the predetermined threshold, the terminal user sends identification information indicating the first edge user to the base station; if p2/p is less than or equal to When the threshold is preset and pl/p is greater than the predetermined threshold, the terminal user sends the identifier information for indicating the second edge user to the base station; if both pl/p and p2/p are less than or equal to the predetermined threshold, the terminal user sends the base station to the base station for sending The identification information of the third edge user is indicated; if both pl/p and p2/p are greater than a predetermined threshold, the terminal user sends identification information for indicating the central user to the base station. The method can enable the base station to determine the type of the terminal user according to the identification information of the user fed back by the terminal user, and improve the recognition capability of the system, thereby performing 40 pairs of resource allocation to the terminal user. Preferably, in step S104, the time-frequency resources in the low-interference time-frequency zone or the high-frequency 4th time-frequency zone corresponding to the type of the terminal user are allocated according to the type of the terminal user, including: In the case of an edge user, the base station preferentially allocates time-frequency resources in the low-interference time-frequency region of the sector in which the terminal user is located, and performs allocation in reverse order from the termination position of the 10,000-hour time-frequency region; In the case that the user is the second edge user of the sector in which the user is located, the base station preferentially allocates time-frequency resources in the low-interference time-frequency region of the sector in which the user is located, and starts from the low-interference time-frequency region of the sector. The location starts, and the allocation is performed sequentially; in the case that the terminal user is the third edge user of the sector in which the terminal user is located, the base station allocates only the time-frequency resources in the sector of the sector in which the terminal user is located; In the case where the user is the central user of the sector in which it is located, the base station allocates time-frequency resources in the high-interference time-frequency region of the sector in which the user is located.

For the first edge user and the second edge user, the time-frequency resources can be allocated from the two ends of the sector of the end user's sector, so as to avoid the use of the same edge users of the adjacent sectors as much as possible. The time-frequency resources have reduced the interference. Preferably, in the case that the end user is the first edge user of the sector in which the terminal user is located, the base station starts from the termination position of the 时4 00 time-frequency region, and the reverse-order allocation includes: the base station from the terahertz octave frequency region The termination position starts with the first preset position as the end, and the allocation is performed in reverse order; in the case that the end user is the second edge user of the sector in which the terminal user is located, the base station starts from the start position of the low-interference time-frequency region, The sequential allocation includes: the base station starts from the starting position of the low-interference time-frequency region, and ends with the second preset position as an end. When the time-frequency resource is allocated to the first edge user and the second edge user, the method not only sets the starting point of the time-frequency resource allocation, but also sets the end point of the time-frequency resource allocation, so that the allocation process is controllable. The interference of adjacent sectors is further reduced. Preferably, in the case that the end user is the central user of the sector in which the terminal user is located, the base station allocates time-frequency resources in the high-frequency 4th time-frequency region of the sector in which the terminal user belongs: the base station from the sector of the terminal user The center position of the high-frequency 4 octave frequency region begins, and the time-frequency resources are allocated to the end users in both forward and reverse directions. The method makes the time-frequency resources in the high-interference time-frequency zone allocated to the central user as different as the time-frequency resources in the low-interference time-frequency zone allocated to the edge user as much as possible, thereby reducing the interference and improving The throughput of the system. Corresponding to the above method, a base station is also provided in this embodiment. 2 is a structural block diagram of a base station according to an embodiment of the present invention. As shown in FIG. 2, the base station 20 includes: an obtaining module 22, a configuration module 24, a determining module 26, and an allocating module 28. The structure is detailed below. Description. The obtaining module 22 is configured to use three uncrossed sets F1, F2, and F3 from the total number of minimum time-frequency resources available for scheduling by the terminal for use by each of the three adjacent sectors; configuration module 24, coupling The obtaining module 22 is configured to set a low-interference time-frequency region and a high-interference time-frequency region of three adjacent sectors respectively by using the sets F1, F2, and F3; the determining module 26 is configured to determine the type of the terminal user, wherein The type of the end user includes a central user and an edge user; and an allocation module 28 coupled to the configuration module 24 and the determining module 26, configured to allocate the type of the end user determined by the determining module to the corresponding time zone of the 4th time zone or Time-frequency resources in the high-frequency 4th time-frequency region. Through the above-mentioned base station 20, the allocation module 28 allocates the time-frequency resources corresponding thereto according to the type of the terminal user, and in the static or semi-static mode, the time-frequency resources are utilized to the maximum extent, and adjacent sectors are avoided. The case where the edge user uses the same time-frequency resource solves the problem that the static frequency method causes the time-frequency domain resource allocation in the sector to be uneven or the dynamic mode overhead is large in the related art, and the problem between adjacent sectors is suppressed. The interference has improved the processing power and performance of the system. It should be noted that the foregoing base station 20 may be used to implement the foregoing embodiments, and the specific implementation process has been described in detail in the method embodiments, and is not described herein. In addition, in the implementation process, the obtaining module 22 and the configuration module 24 may also be configured by the upper layer network element of the base station 20, and then notify the base station 20 of the configured information. The upper layer network element herein may be a relay device, a base station controller, an access service network, a connection service network, a core network gateway, or the like. The present invention further provides a preferred embodiment, which combines the technical solutions of the foregoing plurality of preferred embodiments, and is a scheduling mechanism for suppressing inter-sector interferences with reasonable use of frequency resources and low overhead, and guarantees certain bandwidth utilization. Under the premise of the rate, the interference between the sectors is further reduced, thereby improving the performance of users located at the edge of the sector. This will be described in detail below with reference to FIGS. 3 and 4. 3 is a schematic diagram of a system three sector number in a preferred embodiment of the present invention. As shown in FIG. 3, first, the base station sector index CELLID numbers the sectors, and is preferably, but not limited to, the following method: sector number = Mod(CELLID, 3)+l, the number range is { 1,2,3}. 4 is a schematic diagram of time-frequency sets F1, F2, and F3 according to a preferred embodiment of the present invention. As shown in FIG. 4, secondly, time-frequency resources available for terminal scheduling can be sorted according to certain rules. It is assumed that all time-frequency resources can be divided into N3 parts according to the minimum schedulable time-frequency resource particles, which are numbered as 1, 2, Nl, N1+1, N2, N2+1, N3-1, N3. In the implementation process, for the sector numbered 1, the set F1 of the time-frequency resource particles 1, 2, and N1 is regarded as its low-interference area, and the starting position index of the area is 1, and the ending position index is

N1, the remaining area is the high thousand 4 area, and the center position index of the high thousand 4 area is N2: The sector numbered 2, the set F2 of the time-frequency resource particles Nl+1, N1+2, and N2 is regarded as its low-interference area, the starting position index of the area is N1+1, and the ending position index is N2. The remaining area is the high-thousand-four area, and the center position index of the high-thousand-four area is N3; for the sector numbered 3, the time-frequency resource particles N2+ 1 , N2+2 , and N3 are set F3 It is regarded as its low-interference area. The starting position index of this area is N2+1, the ending position index is N3, the remaining area is high-interference area, and the center position index of the high-thousand-four area is Nl. FIG. 5 is a schematic diagram of a time-frequency set positive sequence and a reverse sequence according to a preferred embodiment of the present invention. As shown in FIG. 5, when a base station allocates scheduling resources to a user, scheduling resource allocation according to the above resource number ordering, It is treated as a positive sequence (including the order after the cyclic shift), for example, 1 , 2, , ,

The order of Nl , Nl+1 , , N2, N2+1 , , N3-1 , N3 , 1 , 2, , Nl , N1+1 , is positive. In the same order as the positive sequence, it is the reverse order scheduling. Preferably, for the foregoing division of time-frequency resources, all time domain resources may be included by default, and only frequency domain resources are distinguished. In this way, after the user accesses the base station, the base station can determine the user type according to the feedback information of the user: including the central user and the edge user, wherein the edge users can be further divided into three categories: Specifically: A sector numbered 1, whose edge user adjacent to the sector numbered 2 is regarded as the first edge user, and the edge user adjacent to the sector numbered 3 is regarded as the second edge user, and; Correspondingly, the sector numbered 2 is regarded as the first adjacent sector, the sector numbered 3 is regarded as the second adjacent sector; and the sector numbered 2 is the sector numbered 3 The adjacent edge user is regarded as the first edge user, and the edge user adjacent to the sector numbered 1 is regarded as the second edge user. Corresponding to; ^, the sector numbered 3 is regarded as the first phase. The adjacent sector, the sector numbered 1 is regarded as the second adjacent sector; for the sector numbered 3, the edge user adjacent to the sector numbered 1 is regarded as the first edge user, and the number is Edge users adjacent to the sector of 2 are considered as second edge users, with ^ Corresponding numbered as the first sector of the neighboring sectors 1, 2 number of sectors is regarded as a second neighboring sectors. The method for determining the type of the user by the base station may be any one of the following two methods: In the first method, the base station first distinguishes the center user and the edge user according to the feedback information of the user, and the feedback information may be at least one of the following: RSSI information, SINR, SIR. That is, when the feedback information is less than a certain threshold, it is determined as an edge user, otherwise it is regarded as a central user. Then, the base station scans the location of the edge user, and then divides the edge user according to its geographic location, and then divides the edge user into three categories: Specifically: the edge user close to the first adjacent sector is regarded as the first edge user; An edge user that is close to the second adjacent sector is considered a second edge user; an edge user that is close to both adjacent sectors is considered a third edge user. In the second method, the base station directly determines the user type according to the user feedback information, that is, first, the user (ie, the terminal user) monitors the path loss of the adjacent sector to the path loss of the service sector to itself, and secondly, The ratio is compared with the configured threshold, and then the comparison result is reported to the base station. The implementation may be: if only the ratio of the first adjacent sector is less than or equal to the threshold (ie, the ratio of the second adjacent sector is greater than the threshold), then 4艮01 may be used as the identifier; if only the second adjacent fan If the ratio of the region is less than or equal to the threshold (ie, the ratio of the first adjacent sector is greater than the threshold), then 10 may be reported as the identifier; if two adjacent sectors (ie, the first adjacent sector and the second neighbor) If the ratio of the sectors is less than or equal to the threshold, then 4艮11 can be used as the identifier; if the ratio of the two adjacent sectors is greater than the threshold, 4艮00 can be used as the identifier. It should be noted that this embodiment suggests but is not limited to the use of such identification methods. In this way, the base station can determine the user type according to the received identifier, as shown in the following table:

6 is a schematic diagram of a low-interference region start position index, a stop position index, and a high-interference region center position index of three sectors according to a preferred embodiment of the present invention, and FIG. 7 is a first edge according to a preferred embodiment of the present invention. A schematic diagram of the priority order of the resource blocks selected by the user and the second edge user, as shown in FIG. 6-7, when the user needs to schedule resources, the base station may allocate corresponding time-frequency resources according to the user type, which may be: The first edge user (which may be the first outer ring user), the base station preferentially allocates time-frequency resources of the low-interference area, and if the resources are insufficient, the time-frequency resources of the non-low-interference area may also be allocated, and The end position index number of the 4th area starts, and the allocation is performed in reverse order. For the second edge user (which may be the second outer ring user), the base station preferentially allocates time-frequency resources of the low-interference area, and if the resources are insufficient, Allocating time-frequency resources of the non-low-interference area, starting from the starting position index number of the low-interference area, and performing the ordering; For the third edge user, the base station can only allocate time-frequency resources of the low-interference area; for the central user, allocate the time-frequency resources of the high-interference area. In the implementation process, for the central user, a similar approach to the edge user may be taken, and the first central user and the second central user may be divided into resource blocks of non-low-interference regions according to different scheduling sequences; The power control method is used for scheduling; or no refinement is performed, and the allocation is uniformly performed in the following order: starting from the index number of the center position of the high-throw area, respectively, the resources are allocated to the forward and reverse directions in turn, taking the sector 1 as an example. The order in which the central user allocates resources is: N2, N2+1, N2-1, N2+2, N2-2, until the resource allocation is completed. Preferably, one or more of the foregoing configuration information (including N1, N2, N3, etc.) and a specific division method of the time-frequency resource block may be configured by default according to the protocol, or may be notified after being configured by the upper-layer network element. Base station. The upper layer network element here may be a relay device, a base station controller, an access service network, a connection network, a core network gateway, and the like. It should be noted that the scheduling mechanism in this embodiment is applicable to the uplink (the transmitting end is the terminal user, the receiving end is the base station) communication system, and the downlink (the transmitting end is the base station, and the receiving end is the terminal user) the resource scheduling of the communication system. It can be seen that, in the case that the three-sector edge load is unbalanced, the overhead is used, and the scheduling policy is used to avoid the use of the same edge users of adjacent sectors as much as possible without wasting the spectrum resources. Time-frequency resources, thereby reducing interference and improving system throughput. The implementation process of the embodiment of the present invention will be described in detail below with reference to examples. Example 1 FIG. 8 is a flowchart of a method for scheduling allocation of resources in an OFDM system according to Embodiment 1 of the present invention. As shown in FIG. 8, the flow of the method may include the following steps: Step S802, first, the base station will be available for the terminal. The time-frequency resources used for scheduling are sorted according to certain rules. It is assumed that all time-frequency resources can be divided into N3 according to the minimum schedulable time-frequency resource particles, which are numbered as 1, 2, ... Nl, Nl+1, respectively. ...N2, N2+1, ...N3-1, N3 (shown in Figure 4); Secondly, the sector determines the starting position, ending position index and high position of the low-interference area according to its own number. The index of the central location of the area. As shown in FIG. 6, the specific may be: For the sector numbered 1, the set F1 of the time-frequency resource particles 1, 2...N1 is regarded as its low-interference area, the start position index of the area is 1, and the end position index is N1, and the remaining area Then, the center position index of the high-thousand-four area is N2; for the sector numbered 2, the set F2 of the time-frequency resource particles Nl+1, N1+2...N2 is regarded as The low-interference area, the starting position index of the area is N1+1, the ending position index is N2, the remaining area is the high-interference area, and the center position index of the high-interference area is N3; for the number 3 The sector F10, which is composed of time-frequency resource particles N2+1, N2+2...N3, is regarded as its low-interference region. The starting position index of the region is N2+1, and the ending position index is N3. The area is a high-interference area, and the center position of the high-interference area is indexed as Nl. Step S804, the base station determines the user type according to the feedback information of the user: including the central user and the edge user, wherein the edge users can be further divided into three categories, specifically: for the sector numbered 1 The edge user adjacent to the sector numbered 2 is regarded as the first edge user, and the edge user adjacent to the sector numbered 3 is regarded as the second edge user; corresponding to ;^, the number is The sector of 2 is regarded as the first adjacent sector, and the sector numbered 3 is regarded as the second adjacent sector. For a sector numbered 2, the edge user adjacent to the sector numbered 3 is regarded as the first edge user, and the edge user adjacent to the sector numbered 1 is regarded as the second edge user; ^ Correspondingly, the sector numbered 3 is regarded as the first adjacent sector, and the sector numbered 1 is regarded as the second adjacent sector. For a sector numbered 3, the edge user adjacent to the sector numbered 1 is regarded as the first edge user, and the edge user adjacent to the sector numbered 2 is regarded as the second edge user; ^ Correspondingly, the sector numbered 1 is regarded as the first adjacent sector, and the sector numbered 2 is regarded as the second adjacent sector. The method for determining the type of the user by the base station may be any one of the following two methods: Method 1, the base station distinguishes the center user from the edge user according to the feedback information of the user, and the feedback information may be at least one of the following: RSSI, SINR, SIR . For example, when the feedback information is less than a certain threshold, it is determined as an edge user, otherwise it is regarded as a central user. 2 The base station scans the location of the edge user, and according to its geographic location, the base station further subdivides the edge users into three categories: Specifically: the edge user close to the first adjacent sector is regarded as the first edge user; An edge user whose two adjacent sectors are close to is regarded as a second edge user; an edge user that is close to both adjacent sectors is regarded as a third edge user. In the second method, the base station directly determines the user type according to the user feedback information. 1 The user monitors the path loss of the adjacent sector to the path loss of the serving sector and the service sector to the path loss, compares the ratio with the configured threshold, and reports the comparison result to the base station. For example, if only the ratio of the first adjacent sector is less than or equal to the threshold, 4艮01 may be used as the identifier, and if only the ratio of the second adjacent sector is less than or equal to the threshold, 4艮10 may be used as the identifier. If the ratio of the two adjacent sectors is less than or equal to the threshold, 4艮11 may be used as the identifier. If the ratio of the two adjacent sectors is greater than the threshold, 00 may be reported as the identifier.

2 The base station can judge the user type according to the received identifier, as shown in the following table:

Step S806: When the base station allocates the scheduling resource to the user, the base station allocates the corresponding time-frequency resource according to the user type, as shown in Figure 6-7, as follows: For the first edge user, the base station preferentially allocates the low-interference area. The time-frequency resource, and if the resource is insufficient, the time-frequency resource of the non-low-interference area may also be allocated, and the allocation is performed in reverse order starting from the end position index number of the low-interference area. For the second edge user, the base station preferentially allocates time-frequency resources of the low-interference area, and if the resources are insufficient, the time-frequency resources of the non-low-interference area may also be allocated, and the starting position of the low-interference area is indexed. The number starts, and the order is assigned. For the third edge user, the base station can only allocate time-frequency resources of the low-interference area. For the central user, the time-frequency resources of the high-interference area are allocated. Similar to the edge user, the first center user and the second center user may be divided into resource blocks of non-low-interference areas according to different scheduling sequences; or may be scheduled according to a certain power control method; or Then, the refinement is performed in the following order: Starting from the high-interference area center position index number, resources are allocated to the forward and reverse directions respectively. Taking sector 1 as an example, the order of the central users to allocate resources is: N2 , N2+ 1, N2-1, N2+2, N2-2... until the resource allocation is completed. Preferably, for the foregoing division of time-frequency resources, all time domain resources may be included by default, and only frequency domain resources are distinguished. In this embodiment, a time-frequency domain interference coordination method is provided. By using different scheduling policies, edge users of adjacent sectors are prevented from using the same time-frequency resource to the greatest extent, thereby suppressing inter-cell thousand Disturb. Example 2 This example 2 provides a scheduling allocation method for resources in a wireless communication system. The base station can determine the user type according to the feedback information of the user (ie, the terminal user) and the geographical location thereof, thereby performing the user type according to the user type. For the allocation of time-frequency resources, the implementation process may include the following steps: Step 1: The base station sorts the time-frequency resources available for scheduling by the terminal according to the configured parameters N1, N2, and N3 according to a certain rule, which are sequentially numbered 1, 2 , ...N1, Ν1+1,...Ν2, N2+1,...N3-1,N3, see Figure 4. The sector determines the start position of the low-interference area, the end position index of the low-interference area, and the center position index of the high-interference area according to its own number. See Figure 6. Step 2: The base station determines the user type according to the feedback information of the user. The type of the user may include two types: a central user and an edge user, and the feedback information may be at least one of the following: RSSI, SINR, and SIR. That is, when the feedback information is less than a certain threshold, it is determined as an edge user, otherwise it is regarded as a central user. Step 3: The base station scans the location of the edge user, and according to its geographic location, the base station further subdivides the edge users into three categories: Specifically: the edge user close to the first adjacent sector is regarded as the first edge. User; an edge user approaching the second adjacent sector is considered a second edge user; an edge user approaching both adjacent sectors is considered a third edge user. Step 4: When the base station allocates the scheduling resource to the user, the base station allocates the corresponding time-frequency resource according to the user type, as shown in Figure 5-7, as follows: For the first edge user, the base station preferentially allocates the low-interference area. The time-frequency resource, and if the resource is insufficient, the time-frequency resource of the non-low-interference area may also be allocated, and the allocation is performed in reverse order starting from the end position index number of the low-interference area. For the second edge user, the base station preferentially allocates time-frequency resources of the low-interference area, and if the resources are insufficient, the time-frequency resources of the non-low-interference area may also be allocated, and the starting position of the low-interference area is indexed. The number starts, and the order is assigned. For the third edge user, the base station can only allocate time-frequency resources of the low-interference area. For the central user, the time-frequency resources of the high-interference area are allocated. Similar to the edge user, the first center user and the second center user may be divided into resource blocks of non-low-interference areas according to different scheduling sequences; or may be scheduled according to a certain power control method; or Then, the refinement is performed in the following order: Starting from the high-interference area center position index number, resources are allocated to the forward and reverse directions respectively. Taking sector 1 as an example, the order of the central users to allocate resources is: N2 , N2+ 1, N2-1, N2+2, N2-2... until the resource allocation is completed. Example 3 This example 3 provides a scheduling allocation method for resources in a wireless communication system. The base station can directly determine the user type according to the feedback information of the user (ie, the terminal user), and allocate the time-frequency resource according to the determined user type. The implementation process may include the following steps: Step 1: The base station sorts the time-frequency resources available for scheduling by the terminal according to the configured parameters N1, N2, and N3 according to a certain rule, which are sequentially numbered 1, 2, .. .N1 , Ν1+1,...Ν2, N2+1,...N3-1, N3. The sector determines the start position of the low-interference area, the low-interference area i or the end position index, and the center position index of the high or high area i or according to its own number. Step 2: The base station directly determines the user type according to the user feedback information, as follows: The user monitors the path loss ratio of the adjacent sector to its own path loss and the service sector to itself, and compares the ratio with the configured threshold. The comparison result is reported to the base station. Specifically, if only the ratio of the first adjacent sector is less than the threshold, the identifier may be used as the identifier, and if only the ratio of the second adjacent sector is less than the threshold, 4艮10 may be used as the identifier, if two If the ratio of the adjacent sectors is less than the threshold, then 4艮11 can be used as the identifier. If the ratio of the two adjacent sectors is not less than the threshold, 00 can be reported as the identifier. It is recommended but not limited to the use of this method of identification. The base station can determine the user type according to the received identifier, as shown in the following table:

Step 3: When the base station allocates scheduling resources to the user, the base station allocates corresponding time-frequency resources according to the user type, as follows: For the first edge user, the base station preferentially allocates time-frequency resources of the low-interference area, and if the resources are insufficient, the time-frequency resources of the non-low-interference area may also be allocated, and the number of the end position of the low-interference area is indexed. Start, assign in reverse order. For the second edge user, the base station preferentially allocates time-frequency resources of the low-interference area, and if the resources are insufficient, the time-frequency resources of the non-low-interference area may also be allocated, and the starting position of the low-interference area is indexed. The number starts, and the order is assigned. For the third edge user, the base station can only allocate time-frequency resources of the low-interference area. For the central user, the time-frequency resources of the high-interference area are allocated. Similar to the edge user, the first center user and the second center user may be divided into resource blocks of non-low-interference areas according to different scheduling sequences; or may be scheduled according to a certain power control method; or Then, the refinement is performed in the following order: Starting from the high-interference area center position index number, resources are allocated to the forward and reverse directions respectively. Taking sector 1 as an example, the order of the central users to allocate resources is: N2 , N2+ 1, N2-1, N2+2, N2-2... until the resource allocation is completed. Example 4 In the above example, for the first type of edge users and the second type of edge users, only the schedulable time-frequency resource scheduling start position and scheduling priority order are specified, and the termination of the schedulable resources is not limited. Location, this example 4 increases this limit. 9 is a schematic diagram showing a priority order of resource blocks selected by a first edge user and a second edge user according to Example 4 of the present invention. As shown in FIG. 9, the method includes the following steps: Step S902, the base station according to the configured parameter N1 , N2, N3, N will use the time-frequency resources available for terminal scheduling according to certain rules, in order, numbered 1, 2, ... Nl, N1+1, ... N2, N2+1, ...N3-1, N3. The sector determines the start position of the low-interference area, the first end position index of the low-interference area, the second end position index of the low-interference area, and the center position index of the high-interference area according to its own number. Step S904, the base station directly determines the user type according to the user feedback information. The user can monitor the path loss ratio of the sector to the path and the path loss ratio of the serving sector to the user. The ratio is compared with the configured threshold, and the comparison result is reported to the base station. For example, if only the ratio of the first adjacent sector is less than or equal to the threshold, then ί艮01 may be used as the identifier, and if only the ratio of the second adjacent sector is less than or equal to the threshold, 4艮10 may be used as the identifier. , If the ratio of two adjacent sectors is less than or equal to the threshold, 4艮11 may be used as the identifier. If the ratio of the two adjacent sectors is greater than the threshold, 4艮00 may be used as the identifier. It is recommended but not limited to the use of this method of identification. The base station can determine the user type according to the received identifier, as shown in the following table:

Step S906: When the base station allocates the scheduling resource to the user, the base station allocates the corresponding time-frequency resource according to the user type, as follows: For the first edge user, the base station preferentially allocates the time-frequency resource of the low-interference area, and if the resource If it is insufficient, the time-frequency resource of the non-low-interference area may be allocated, and the end position index number of the low-interference area is started, and the second end position index of the area of the thousand-four area is ended, and the allocation is performed in reverse order. Preferably, when N=0, that is, the center position index of the high-interference area is used as the second end position index of its low-interference area. For the second edge user, the base station preferentially allocates time-frequency resources of the low-interference area, and if the resources are insufficient, the time-frequency resources of the non-low-interference area may also be allocated, and the starting position of the low-interference area is indexed. The numbering starts with the end of the second end position index of the low-interference area, and the allocation is performed in order. Preferably, when N=0, that is, the center position index of the high-interference area is used as the second end position index of its low-interference area. For the third edge user, the base station can only allocate time-frequency resources of the low-interference area. For the central user, the time-frequency resources of the high-interference area are allocated. Similar to the edge user, the first center user and the second center user may be divided into resource blocks of non-low-interference areas according to different scheduling sequences; or may be scheduled according to a certain power control method; or Then, the refinement is performed in the following order: Starting from the high-interference area center position index number, resources are allocated to the forward and reverse directions respectively. Taking sector 1 as an example, the order of the central users to allocate resources is: N2 , N2+ 1, N2-1, N2+2, N2-2... until the resource allocation is completed. Example 5 The above examples all divide the entire available resource block into three area sets F1, F2, F3, which are respectively used by outer ring users (ie, edge users) of different sectors, and in this example 5, the whole is available. of The resource block is divided into four regional sets Fl, F2, F3 and F4. The scheduling criteria for Fl, F2, F3 and outer ring users are not changed, but the time-frequency resource set F4 is reserved separately to give the inner ring with the highest priority. User (ie, central user) is used. 10 is a schematic diagram of a time-frequency set F1, F2, F3, and F4 according to the fifth embodiment of the present invention. As shown in FIG. 10, the flow in the wireless communication system of the present example includes: Step S1002, the base station according to the configuration The parameters N1, N2, and N3 sort the time-frequency resources available for terminal scheduling according to certain rules, and are sequentially numbered 1, 2, ... Nl, N1+1, ... N2, N2+1,. ..N3-1, N3, N3+1, ... N4; The sector is determined according to its own number, the starting position of the 或 thousand 4 zone i or the end position index of the low interference zone and the high thousand The center position index of the disturbance area. Step S1004, the base station directly determines the user type by using the user feedback information, as follows: The user monitors the path loss of the adjacent sector to its own path loss and the service sector to its path loss ratio, and compares the ratio with the configured threshold. The result of the comparison is reported to the base station. Specifically, if only the ratio of the first adjacent sector is less than the threshold, 4艮01 may be used as the identifier, and if only the ratio of the second adjacent sector is less than the threshold, then 10艮 may be used as the identifier, if two If the ratio of the adjacent sectors is less than the threshold, then 4艮11 can be used as the identifier. If the ratio of the two adjacent sectors is not less than the threshold, 00 can be reported as the identifier. It is recommended but not limited to the use of this method of identification. The base station can determine the user type according to the received identifier, as shown in the following table:

Step S1006: When the base station allocates the scheduling resource to the user, the base station allocates the time-frequency resource according to the user type, and specifically: the first edge user, the base station preferentially allocates the time-frequency resource of the low-interference area. If the resources are insufficient, the time-frequency resources of the non-low-interference area may also be allocated, and the allocation is performed in reverse order starting from the end position index number of the low-interference area. For the second edge user, the base station preferentially allocates time-frequency resources of the low-interference area, and if the resources are insufficient, the time-frequency resources of the non-low-interference area may also be allocated, and the starting position of the low-interference area is indexed. The number starts, and the order is assigned. For the third edge user, the base station can only allocate time-frequency resources of the low-interference area. For the central user, if the user has higher requirements for the information transmission environment, the time-frequency resources in the F4 set are preferentially allocated. Otherwise, starting from the index of the center position of the high-rank 4 area, the resources are allocated to the forward and reverse directions in turn. Taking the sector 1 as an example, the order of the resources allocated by the central user is: N2, N2+ 1, N2-1, N2 +2, N2-2... until the resource allocation is completed. It should be noted that, as an alternative, one or more of the configuration information (including N1, N2, N3, N4, etc.) and the specific division method of the time-frequency resource block in the foregoing example may be specified by the protocol. The default configuration is configured, or the base station is notified after being configured by the upper-layer network element. The upper layer network element herein may be a relay device, a base station controller, an access service network, a connection service network, a core network gateway, or the like. In addition, the above multiple examples are applicable to the uplink (the transmitting end is the end user, the receiving end is the base station), and the downlink (the transmitting end is the base station, and the receiving end is the terminal user) resource scheduling of the communication system. In summary, the interference coordination technology and the resource scheduling allocation method in an OFDM system provided by the embodiments of the present invention use a small overhead and a scheduling policy when the three-sector edge load is unbalanced. Under the premise of not wasting the spectrum resources, the edge users of adjacent sectors are prevented from using the same time-frequency resources as much as possible, thereby reducing the interference and improving the system throughput. Moreover, the technical solution of the embodiment of the present invention has not been tampered with the existing network architecture and the current process, and is easy to implement and popularize, and has strong industrial applicability. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

Claims

The method for scheduling allocation of resources in an orthogonal frequency division multiplexing system includes the following steps:

From the total number of minimum time-frequency resources available for terminal scheduling, three non-interleaved sets F1, F2, and F3 are used for each of the three adjacent sectors, and are set using the sets F1, F2, and F3, respectively. The three adjacent sectors of the mega-four octave frequency region and the high-thirty-four octave frequency region; and the base station determines the type of the terminal user, and the type assignment of the terminal user corresponds to the corresponding 氐4 4 A time-frequency resource in a zone or a high-frequency zone, wherein the type of the terminal user includes a central user and an edge user. The method according to claim 1, wherein the setting of the F1, F2, and F3, respectively, of the three adjacent sectors is performed by:

The low-interference time-frequency regions of the three adjacent sectors T1, Τ2, and Τ3 are set as the sets F1, F2, and F3, respectively, and the high-thirty-fourth time-frequency regions of the sector T1 are the sets F2 and F3, the sector The high-thirty-fourth time-frequency region of T2 is the set F3 and F1, and the high-thirty-fourth time-frequency region of the sector T3 is the set F1 and F2. The method according to claim 2, wherein the time-frequency resources allocated in the corresponding time-frequency region or the high-time frequency region according to the type of the terminal user include:

In the case that the end user is an edge user of a sector in which the terminal user is located, the base station preferentially allocates time-frequency resources in the sector of the sector in which the terminal user is located;

In the case where the end user is the central user of the sector in which it is located, the base station allocates time-frequency resources in the high-frequency region of the sector in which the terminal user is located. The method according to claim 2, wherein the edge user is divided into a first edge user, a second edge user, and a third edge user, wherein

The sectors T2 and T3 are the first adjacent sector and the second adjacent sector of the sector T1, respectively, and the sectors T3 and T1 are the first adjacent sector and the second adjacent sector of the sector T2, respectively. The sectors T1 and T2 are the first adjacent sector and the second adjacent sector of the sector T3, respectively;

Within one sector, an edge user that is close to its first neighboring sector is a first edge user; an edge user that is close to its second neighboring sector is a second edge user; with its first adjacent sector and second The edge users whose adjacent sectors are close are the third edge users. The method according to claim 4, wherein the determining, by the base station, the type of the terminal user comprises:

The feedback information of the base station and the threshold value of the base station determines the central user or the edge user of the sector in which the terminal user is located, where the feedback information includes at least one of the following: the received signal strength indication RSSI information , signal to interference noise ratio SINR, signal and interference ratio SIR; in the case that the end user is an edge user of the sector in which the terminal user is located, the base station determines the location according to the geographic location of the terminal user The end user is at least one of the following: a first edge user, a second edge user, and a third edge user.

The method according to claim 4, wherein before the determining, by the base station, the type of the terminal user, the method further includes:

The terminal user calculates a path loss pl of the first adjacent sector of the sector in which it is located to the end user, a path loss p2 of the second adjacent sector to the end user, and the end user The path loss to the end user of the end user;

If pl/p is less than or equal to a predetermined threshold and p2/p is greater than the predetermined threshold, the terminal user sends identifier information indicating the first edge user to the base station;

If p2/p is less than or equal to the predetermined threshold and pl/p is greater than the predetermined threshold, the terminal user sends identifier information for indicating the second edge user to the base station;

If both pl/p and p2/p are less than or equal to the predetermined threshold, the terminal user sends identification information for indicating the third edge user to the base station;

If both pl/p and p2/p are greater than the predetermined threshold, the terminal user sends identification information indicating the central user to the base station.

The method according to claim 5 or 6, wherein, according to the type of the terminal user, the time-frequency resources allocated in the corresponding time-frequency region or the high-frequency region of the high-frequency region include:

In the case that the terminal user is the first edge user of the sector in which the terminal user is located, the base station preferentially allocates time-frequency resources in the sector of the sector in which the terminal user is located, and from the The termination position of the 10,000th time-frequency region begins, and is assigned in reverse order;

In the case that the terminal user is the second edge user of the sector in which the terminal user is located, the base station preferentially allocates time-frequency resources in the sector of the sector in which the terminal user is located, and from the time-frequency resource Start at the beginning of the 10,000th time-frequency zone, and assign them sequentially; In the case that the terminal user is the third edge user of the sector in which the terminal user is located, the base station allocates only the time-frequency resources in the sector of the sector in which the terminal user is located;

In the case where the end user is the central user of the sector in which it is located, the base station allocates time-frequency resources in the high-frequency region of the sector in which the terminal user is located.

8. The method according to claim 7, wherein

In the case that the terminal user is the first edge user of the sector in which the terminal user is located, the base station starts from the termination position of the mega-time zone, and the reverse-order allocation includes: the base station from the 氐4 The end position of the time-frequency zone starts, ending with the first preset position, and is allocated in reverse order; in the case that the terminal user is the second edge user of the sector in which the terminal user is located, the base station receives the low-frequency interference time from the low frequency The starting position of the area starts, and the ordering is performed: the base station starts from the starting position of the 尤 4 4 00 Hz time zone and ends with the second preset position.

9. The method according to claim 7, wherein, in the case that the end user is a central user of a sector in which the terminal user is located, the base station allocates a high frequency of the sector in which the terminal user is located. Time-frequency resources in the time-frequency zone include:

The base station starts from a central location of the high-frequency region of the sector in which the terminal user is located, and alternately allocates time-frequency resources to the terminal user in both forward and reverse directions.

10. A type of base station, including:

The obtaining module is configured to take three uncrossed sets F1, F2 and F3 from the total number of minimum time-frequency resources available for scheduling by the terminal for use by each of the three adjacent sectors;

The configuration module is set to use the sets Fl, F2, and F3 to respectively set the three adjacent sectors of the 10,000th time zone and the high frequency zone;

a determining module, configured to determine a type of the end user, wherein the type of the end user includes a center user and an edge user;

And an allocation module, configured to allocate time-frequency resources in the corresponding time-frequency region or high-frequency region according to the type of the terminal user determined by the determining module.