WO2013040951A1 - 小区间资源协调的方法和设备 - Google Patents

小区间资源协调的方法和设备 Download PDF

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Publication number
WO2013040951A1
WO2013040951A1 PCT/CN2012/079259 CN2012079259W WO2013040951A1 WO 2013040951 A1 WO2013040951 A1 WO 2013040951A1 CN 2012079259 W CN2012079259 W CN 2012079259W WO 2013040951 A1 WO2013040951 A1 WO 2013040951A1
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Prior art keywords
resource
information
uplink
cell
network device
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PCT/CN2012/079259
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English (en)
French (fr)
Inventor
徐婧
潘学明
沈祖康
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电信科学技术研究院
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Publication of WO2013040951A1 publication Critical patent/WO2013040951A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10Dynamic resource partitioning

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method and device for resource coordination between cells. Background technique
  • inter-cell interference coordination The basic idea of inter-cell interference coordination is to limit the use of edge user resources by inter-cell coordination, including limiting which time-frequency resources are available, or limiting the transmit power on certain time-frequency resources, as shown in Figure 1. It is a schematic diagram of the frequency soft multiplexing technology in the prior art, and the solution is to avoid and reduce interference and ensure the edge coverage rate. Inter-cell interference coordination can be either static or semi-static.
  • the basic idea of static interference coordination is to pre-plan the frequency available to users at each cell edge or on which PRBs (Physical Resource Blocks) to transmit power.
  • PRBs Physical Resource Blocks
  • the resources available to users at different cell edges are different to achieve interference coordination.
  • the semi-static interference coordination uses the load information between the base stations to understand the resource usage and interference of the neighboring cells.
  • Power transmission at the same time, inform the neighboring area of its own resource utilization, try to avoid resource collision in the adjacent interval, to achieve the purpose of interference coordination.
  • the standard defines a UL interference overload indication (UL), and a high-interference indication (UL), which is used to notify the neighboring cell of the cell's interference load. It is convenient for neighboring cells to do interference coordination.
  • the uplink and downlink signal subcarrier mapping diagram is as shown in FIG. 2A and FIG. 2B.
  • the downlink subcarriers are distributed to both sides with the DC level as the center, but the subcarriers are not mapped at the DC level, as shown in FIG. 2A;
  • the carrier is uniformly distributed over the entire system bandwidth, but the center carrier frequency deviates from the DC level by 7.5 kHz, as shown in Figure 2B. Therefore, the uplink and downlink signals cannot be orthogonal even if they are configured on different resource blocks.
  • FIG. 3 it is a schematic diagram of interference between uplink and downlink subcarriers in the prior art.
  • the LTE system control information and the data transmission use different channels.
  • the PUCCH Physical Uplink Control Channel
  • the PUSCH Physical Uplink Shared Channel 7
  • the downlink uses the PDCCH.
  • the bearer control information and the PDSCH (Physical Downlink Shared Channel) carries data.
  • the PDCCH can not meet the transmission requirements of the downlink control information.
  • an enhanced PDCCH evolved PDCCH, ePDCCH
  • the resources allocated to the control channel have certain characteristics.
  • the PUCCH is usually distributed on both sides of the system bandwidth, and the PDCCH is distributed on the first 1-3 symbols of the subframe.
  • the ePDCCH is similar to the PDSCH allocated on several resource blocks, but the frequency is The domain location is relatively fixed.
  • Control information is the basis of data transmission, and the impact of interference control information on system performance is more obvious. Therefore, when performing interference coordination, the priority of the control information should be higher than the data. Since the PDCCH is distributed over the entire bandwidth, there is no room for coordination. Therefore, the coordination of the downlink control information only considers the ePDCCH.
  • the interference coordination technology currently used only roughly divides the resources of each cell, and does not distinguish between data and control information, so that the transmission performance of the control information cannot be guaranteed.
  • the currently used interference coordination technology mainly solves the interference in the same direction, and for the interference in different directions, only the scheme of allocating orthogonal resources in the prior art cannot eliminate the influence of interference.
  • the embodiments of the present invention provide a method and a device for coordinating resources between cells, which can solve the problem that the inter-cell interference cannot be effectively eliminated in the prior art solution.
  • an embodiment of the present invention provides a method for coordinating inter-cell resources, including at least the following steps:
  • the network device acquires resource scheduling information and uplink and downlink configuration information of the neighboring cell; the network device performs resource scheduling on the current cell according to the resource scheduling information and the uplink and downlink configuration information of the neighboring cell, in different directions on the same subframe.
  • a service resource block is reserved between the services, where the services in different directions include at least services in different directions of the current cell and the neighboring cell.
  • the embodiment of the present invention further provides a network device, where the method further includes: an obtaining module, configured to acquire resource scheduling information of a neighboring cell, and an uplink and downlink configuration information scheduling module, configured to obtain a perimeter according to the acquiring module
  • the resource scheduling information and the uplink and downlink configuration information of the cell are used to perform resource scheduling on the current cell, and a protection resource block is reserved between the services in different directions in the same subframe, where the services in different directions include at least the current cell and the surrounding area. Business in different directions of the community.
  • resource scheduling and protection resource block reservation are performed according to the obtained resource scheduling information and uplink and downlink configuration information of the neighboring cell, so that the neighboring cell can select an appropriate resource allocation manner.
  • Inter-cell interference especially interference of uplink and downlink signals, is suppressed.
  • FIG. 1 is a schematic diagram of a frequency soft multiplexing technique in the prior art
  • FIG. 2A and FIG. 2B are schematic diagrams of uplink and downlink signal subcarrier mapping in the prior art
  • FIG. 3 is a schematic diagram of interference between uplink and downlink subcarriers in the prior art
  • 4 is a schematic flowchart of a method for resource coordination between cells according to an embodiment of the present invention
  • FIG. 5A and FIG. 5B are schematic flowcharts of a method for coordinating small-area resources in a specific application scenario according to an embodiment of the present invention
  • FIG. 6 is a schematic diagram of a reservation scheme of a protection resource block in a specific application scenario according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a network device according to an embodiment of the present invention
  • FIG. 8 is a schematic structural diagram of an ear device according to an embodiment of the present invention
  • FIG. 9 is another schematic diagram of an embodiment of the present invention. Schematic diagram of the structure of the ear. detailed description
  • the TDD (Time Division Duplexing) mode which is one of the two basic duplex systems, has received more and more attention in the context of increasing bandwidth demand for broadband mobile communications.
  • the uplink and downlink transmissions use the same frequency resource to transmit uplink/downlink signals on different time slots.
  • TD-SCDMA Time Division-Synchronous Code Division Multiple Access
  • 3G 3rd Generation, 3rd Generation Mobile Communication System
  • 4G 4th Generation, fourth
  • the division of uplink and downlink time slots is static or semi-static. The usual practice is based on the network planning process.
  • the approximate service ratio determines the uniform uplink and downlink time slot ratio and remains unchanged. This is a relatively simple approach in the context of large coverage of macro cells, and is also more effective. With the development of technology, more and more low-power base stations such as Pico cells and Home NodeBs are deployed to provide local small coverage. On the one hand, the main service types (for example, data services) of such cells are different from those of macro cells (for example, voice services). Therefore, the matching requirements of uplink and downlink time slots are quite different. On the other hand, the number of users in such a cell is small, and the user service demand changes greatly. Therefore, there is a dynamic change in the proportion of the uplink and downlink services of the cell.
  • main service types for example, data services
  • macro cells for example, voice services
  • the different uplink and downlink time slot ratios of the cell configuration cause attention, especially dynamically.
  • the application obstacle of these schemes is to cause serious cross-slot interference between adjacent cells, including adjacent cell interference of the same frequency, and neighbor cell interference of the adjacent frequency.
  • adjacent channel interference is weakened due to the processing of guard band or baseband filtering.
  • co-channel interference will be much more serious. If this type of interference cannot be solved, not only will the benefits of flexible allocation of the uplink and downlink ratios be obtained, but the entire network will be paralyzed.
  • the uplink and downlink signals are generated in different manners in the LTE system, if the inter-cell interference coordination mode in the current network is directly adopted, only the interference of the signals in the same direction can be suppressed, and the suppression of interference in the opposite direction is limited.
  • the embodiment of the present invention provides a method for resource coordination between cells based on a protection resource block, which can effectively suppress interference of signals in different directions (uplink and downlink signals).
  • FIG. 4 is a schematic flowchart of a method for resource coordination between cells according to an embodiment of the present invention, where the method specifically includes the following steps:
  • Step S401 The network device acquires resource scheduling information and uplink and downlink configuration information of the neighboring cell.
  • This step can be classified into the following two cases according to the type difference of physical entities in the actual application scenario of the network device.
  • Case 1 When the network device is specifically a base station corresponding to the current cell, the base station receives resource scheduling information and uplink and downlink configuration information of the neighboring cell sent by other base stations corresponding to the neighboring cell, or the base station receives the corresponding neighboring cell The resource scheduling information of the neighboring cells sent by the other base stations and the uplink and downlink configuration information of other base stations are measured.
  • Case 2 When the network device is specifically a central node that controls multiple base stations, the central node acquires resource scheduling information and uplink and downlink configuration information of neighboring cells sent by other base stations corresponding to the neighboring cells.
  • the resource scheduling information is specifically one or more of the following information:
  • the resource scheduling information is specifically the resource occupation information of the corresponding cell
  • the resource scheduling information includes all the resource information required by the PUCCH, the PUSCH, and the PRACH.
  • the resource scheduling information specifically includes all the resource information required by the PDSCH and the ePDCCH.
  • the resource occupation information of the control part specifically includes the resource information required by the PUCCH and the PRACH.
  • the resource occupation information of the data part specifically includes the resource information required by the PUSCH.
  • the resource occupation information of the control part specifically includes the resource information required by the ePDCCH, and the resource occupation information of the data part specifically includes the PDSCH required. Resource information.
  • the resource scheduling information is specifically the resource information that is not occupied by the corresponding cell
  • the resource scheduling information includes, for the uplink resource, resource information other than the resource information required by the PUCCH, the PUSCH, and the PRACH, and the downlink resource.
  • the resource scheduling information specifically includes resource information other than all resource information required by the PDSCH and the ePDCCH.
  • the form of the resource scheduling information is specifically a resource block number, and/or a resource block sequence number, and/or a transmit power information on the response resource block.
  • the resource scheduling information of the neighboring cell sent by the other base stations corresponding to the neighboring cell is obtained by the following method:
  • the other base stations are estimated according to the traffic demand requirements of the respective neighboring cells; Or, other base stations are pre-configured according to user capacity in respective neighboring cells; or
  • the other base stations determine according to the resource block occupancy of the current subframe of the respective neighboring cell; or The other base stations obtain statistics according to the resource block occupancy of the respective neighboring cells for a period of time.
  • the above-mentioned uplink and downlink configuration information is specifically one or more of the following information.
  • the uplink and downlink configuration information is specifically the uplink and downlink configuration of the subframe
  • the uplink and downlink configuration information is obtained by using information sent by other base stations, or obtained by using information on the neighboring cell to the central node, or through the cell.
  • the information reported by the terminal device is obtained.
  • the uplink and downlink configuration information is specifically the interference of the subframe
  • the uplink and downlink configuration information is obtained by measurement, where the measurement is specifically performed by the base station, or is performed by the terminal device, and the measurement result is reported to the base station.
  • the specific measurement method can be as follows:
  • the network device determines whether the interference energy of the current subframe is higher than a preset threshold.
  • the preset threshold is a value that is preset in the system to distinguish the interference energy, and the value may be adjusted according to actual needs.
  • the network device determines that the interference source is a base station with a different direction, and the current subframe is a downlink subframe.
  • the network device determines that the interference source is a terminal device of the same-direction cell, and the current subframe is an uplink subframe.
  • Step S402 The network device performs resource scheduling on the current cell according to resource scheduling information and uplink and downlink configuration information of the neighboring cell, and reserves a protection resource block between services in different directions in the same subframe.
  • the services in different directions include at least services in different directions of the current cell and the neighboring cells.
  • the protection resource block is specifically a resource block that is not used to transmit any information between the resource blocks scheduled by the uplink and downlink signals, where the uplink and downlink signals include at least different neighboring cells. Up and down signals in the direction.
  • protection resource block reservation manner may include the following two situations:
  • the services in different directions may include services in different directions of the current cell and the neighboring cells, and may also include services in different directions in the same cell. In this way, not only different cells may be avoided. Interference caused by the direction of the service can also avoid interference caused by services in different directions in the same cell.
  • the network device determines an allocation policy of the protection resource block according to the current system bandwidth. Further, the interference power is obtained by being measured by the interfered base station, or obtained by measurement by the terminal device in the cell.
  • the useful signal power is specifically the transmit power of the base station corresponding to the current cell, or obtained by the terminal device in the cell measuring the signal sent by the base station. Power information.
  • the implementation of the protection resource block specifically includes: when the network device is specifically a base station corresponding to the current cell, or controls a central node of multiple base stations, if the reserved resource block is reserved The information is included in the received resource scheduling information of the neighboring cell, and the network device performs resource scheduling of the current cell according to the resource scheduling information of the neighboring cell, and discards the additional reserved protection resource block; or When the network device is specifically a base station corresponding to the current cell, if the information of the reserved protection resource block is not included in the received resource scheduling information of the neighboring cell, the network device is in accordance with the resource of the neighboring cell. When the scheduling information is used for resource scheduling of the current cell, an additional resource block is reserved.
  • the network device in order to improve resource utilization of the system, continuously allocates resources in the same direction in the same subframe, thereby avoiding continuous allocation between resources in the same direction. As a result, the number of reserved protection resource blocks increases, which wastes system resources.
  • resource scheduling and protection resource block reservation are performed according to the obtained resource scheduling information and uplink and downlink configuration information of the neighboring cell, so that the neighboring cell can select an appropriate resource allocation manner.
  • Inter-cell interference especially interference of uplink and downlink signals, is suppressed.
  • the embodiment of the present invention provides a TDD inter-cell resource coordination method, so that neighboring cells can select an appropriate resource allocation manner by means of negotiation, thereby avoiding the adverse effect of the cross-time slot 4 especially on system performance.
  • the resource scheduler is configured according to resource scheduling information of the neighboring cells, uplink and downlink configuration information, and the like. Perform resource scheduling. For services in different directions (upstream and downstream) on the same subframe, the resource scheduler reserves protection resource blocks between services in different directions.
  • the resource scheduling information may be one or more of the following, but is not limited to the description in the foregoing step S401:
  • Resource occupancy information of the cell that is, resources used by the cell for data and signaling transmission.
  • the foregoing resource scheduling information includes PUCCH and PUSCH and all resources required for PRACH.
  • the foregoing resource scheduling information includes a PDSCH, and if there is an ePDCCH in the system, all the resources required by the ePDCCH are also included.
  • the resource occupation information of the current cell includes a control part and a data part, and distinguishes the notification.
  • the resources required by the PUCCH are used as the control part of the resource occupation information; the resources required by the PUSCH and the PRACH are used as the data part of the resource occupation information.
  • the ePDCCH (if there is ePDCCH in the system) requires the resource as the control part of the resource occupation information; the resource required by the PDSCH is the data part of the resource information.
  • the resource scheduling information of the control information and the data is instructed by indicating that the resource information occupied by the control and the data is indicated by using independent signaling.
  • all resources of resource data and signaling transmission include PUCCH and PUSCH and all resources required for PRACH.
  • all resources transmitted by data and signaling include PDSCH. If there is ePDCCH in the system, all resources required by ePDCCH are also included.
  • the resource scheduling information may be expressed as the number of resource blocks and/or the resource block number, or may also include the transmit power level information on the response resource block, and the change of the specific content does not affect the protection scope of the present invention.
  • the resource scheduling information may be obtained according to the following method, but is not limited to: the current cell is estimated according to the traffic demand, or the value pre-configured by the cell according to the user capacity, or the current subframe of the current cell.
  • the resource block occupancy situation, or the resource block occupancy statistics of the previous period of the community is obtained.
  • the uplink and downlink configuration information refers to one or several types:
  • the uplink and downlink configuration of the subframe may be obtained by the downlink control channel indication, or obtained by the high layer signaling indication, and is distinguished by the execution subject, and may include the following three cases:
  • Case A Obtained by information transmitted by other base stations, that is, information is obtained through interaction between base stations.
  • Case B the information obtained by the central node on the neighboring cell is obtained.
  • the central node controls a plurality of base stations, and the cell corresponding to each base station reports the corresponding information to the central node, thereby corresponding peripherals.
  • the uplink and downlink configuration information of the cell can be directly obtained from the central node.
  • Case C Obtained by the information reported by the terminal device in the cell, that is, the terminal device in the cell performs measurement of the uplink and downlink configuration information of the neighboring cell, and reports the measurement result to the base station.
  • the specific form of the uplink and downlink configuration information may be indicated in units of one or more radio frames, or may be indicated in units of one or more subframes.
  • the interference situation of the sub-frame can be obtained by measurement, where the measurement is specifically performed by the base station, or is performed by the terminal device and the measurement result is reported to the base station.
  • the interference source when the interference average energy is large, the interference source is a different base station, and the current subframe of the base station can be determined to be downlink.
  • the interference source when the average interference energy is small, the interference source is the terminal of the same-direction cell, and the current subframe of the base station may be determined to be uplink.
  • the embodiment of the present invention proposes The technical solution also has the following two situations:
  • the resource scheduler may be the base station side, and the resource scheduling information and the uplink and downlink configuration information need to be exchanged between the base stations.
  • the resource scheduling information is exchanged through the X2 interface, and the uplink and downlink configuration information can be exchanged through the X2 interface, or obtained by measurement.
  • the resource scheduling information is exchanged through the X2 interface, and the uplink and downlink configuration information can be exchanged through the X2 interface, or obtained by measurement.
  • FIG. 5A a schematic diagram of the corresponding implementation scenario is shown in FIG. 5A.
  • the resource scheduler may also be a central node that controls multiple base stations, and the resource scheduling information and the uplink and downlink configuration information need only be reported by the base station to the central node.
  • the base station reports to the central node through the S1 interface.
  • a schematic diagram of the corresponding implementation scenario is shown in FIG. 5B.
  • the protection reserved resource block proposed by the embodiment of the present invention refers to that some resource blocks are reserved between the resource blocks scheduled by the uplink and downlink signals, and no information is transmitted, where the uplink and downlink signals include at least different neighboring cells. Up and down signals in the direction.
  • the method for allocating the protection resource block specifically includes the following:
  • the specific implementation process is not limited to this allocation scheme, and other solutions that can achieve the same effect, or numerical changes of corresponding parameters in the solution can be applied to the embodiment of the present invention, such changes are not It affects the scope of protection of the present invention.
  • the interference power may be obtained by being measured by the interfered base station, or may be measured by the terminal device in the cell, and fed back to the base station for obtaining.
  • the interference/utility signal power ratio is divided into N levels, corresponding to N protection resource block configuration methods.
  • the protection resource block is 1 resource.
  • Source block; 3dB ⁇ interference/ useful signal power ratio ⁇ 15dB, then the protection resource block is 5 resource blocks; if the interference/utility signal power ratio is >15dB, the protection resource block is 10 resource blocks.
  • the specific implementation process is not limited to this allocation scheme, and other solutions that can achieve the same effect, or numerical changes of corresponding parameters in the solution can be applied to the embodiment of the present invention, such changes are not It affects the scope of protection of the present invention.
  • the interference power refers to the interference energy from other cells, which is usually obtained by the base station or obtained according to the measurement feedback of the terminal device.
  • the useful signal power refers to the transmit power of the base station corresponding to the current cell, or is determined by the terminal device in the cell. The power information obtained by the signal transmitted by the base station is measured.
  • the protection resource block is one resource block.
  • the specific implementation process is not limited to this allocation scheme, and other solutions that can achieve the same effect, or numerical changes of corresponding parameters in the solution can be applied to the embodiment of the present invention, such changes are not It affects the scope of protection of the present invention.
  • the reserved protection resource block is a RB in the case of the system bandwidth below lOMhz
  • the reserved resource block is B RB in the case of the system bandwidth above the lOMhz bandwidth.
  • the implementation manner of the reserved protection resource block includes one or more of the following.
  • the reserved protection resource block may be included in the resource scheduling information, that is, the resource block indicated in the resource scheduling information includes not only a resource block for transmitting signaling or data but also a reserved protection resource block. When the base station performs the scheduling of the cell, no additional protection resource block is reserved;
  • the resource scheduling information only includes the resource blocks actually used for transmitting signaling or data.
  • the base station needs to additionally consider the reserved resource blocks, that is, not only avoiding the resources of other cells, but also avoiding Open the protection resource block.
  • the specific implementation process is not limited to this allocation scheme, and other solutions that can achieve the same effect, or numerical changes of corresponding parameters in the solution can be applied to the embodiment of the present invention, such changes are not It affects the scope of protection of the present invention.
  • resources in the same direction may be continuously allocated to avoid adding more protection when resources in other directions are inserted between resources in the same direction.
  • the resource block, and the waste of resources caused by the resource block, as shown in FIG. 6 is a schematic diagram of a reservation scheme of a protection resource block in a specific application scenario proposed by the embodiment of the present invention.
  • the form is just an example, and the resource scheduling scheme is not limited to this.
  • resource scheduling and protection resource block reservation are performed according to the obtained resource scheduling information and uplink and downlink configuration information of the neighboring cell, so that the neighboring cell can select an appropriate resource allocation manner.
  • Inter-cell interference especially interference of uplink and downlink signals, is suppressed.
  • the embodiment of the present invention further provides a network device, and a schematic structural diagram thereof is shown in FIG. 7, which at least includes:
  • the obtaining module 71 is configured to acquire resource scheduling information and uplink and downlink configuration information of the neighboring cell.
  • the scheduling module 72 is configured to perform resource scheduling on the current cell according to the resource scheduling information and the uplink and downlink configuration information of the neighboring cell acquired by the acquiring module 71, and reserve protection resources between services in different directions in the same subframe. Block, where the services in different directions include at least services in different directions of the current cell and the neighboring cells.
  • the acquiring module 71 specifically includes:
  • the first receiving submodule 711 is configured to receive resource scheduling information of the neighboring cells sent by other base stations corresponding to the neighboring cells.
  • the second receiving sub-module 712 is configured to receive uplink and downlink configuration information of the neighboring cells sent by other base stations corresponding to the neighboring cells.
  • the acquiring module 71 specifically includes:
  • the receiving submodule 713 is configured to receive a week sent by another base station corresponding to the neighboring cell Resource scheduling information of the side cell;
  • the measurement sub-module 714 is configured to measure uplink and downlink configuration information of other base stations.
  • the resource scheduling information is specifically:
  • the uplink and downlink configuration information is specifically:
  • Uplink and downlink configuration information of the subframe and / or,
  • scheduling module 72 is specifically configured to:
  • the protection resource block is specifically a resource block that does not transmit any information between the resource blocks scheduled by the uplink and downlink signals, and the uplink and downlink signals include at least uplink and downlink signals in different directions of the peripheral cells.
  • resource scheduling and protection resource block reservation are performed according to the obtained resource scheduling information and uplink and downlink configuration information of the neighboring cell, so that the neighboring cell can select an appropriate resource allocation manner.
  • Inter-cell interference especially interference of uplink and downlink signals, is suppressed.
  • the embodiments of the present invention may be implemented by hardware, or may be implemented by means of software plus a necessary general hardware platform.
  • the technical solution of the embodiment of the present invention can be embodied in the form of a software product, and the software product can be stored in a non-volatile manner.
  • the storage medium (which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network side device, etc.) to perform various implementation scenarios of the embodiments of the present invention. Said method.
  • modules in the apparatus in the implementation scenario may be distributed in the apparatus for implementing the scenario according to the implementation scenario description, or may be correspondingly changed in one or more devices different from the implementation scenario.
  • the modules of the above implementation scenarios may be combined into one module, or may be further split into multiple sub-modules.

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Abstract

本发明实施例公开了一种小区间资源协调的方法和设备,通过应用本发明实施例的技术方案,根据获取到的周边小区的资源调度信息和上下行配置信息进行资源调度和保护资源块的预留,从而,使相邻小区能够选择合适的资源分配方式,抑制了小区间干扰,特别是上下行信号的干扰。

Description

小区间资源协调的方法和设备 本申请要求于 2011 年 9 月 21 日提交中国专利局, 申请号为 201110281775.7, 发明名称为 "小区间资源协调的方法和设备" 的中 国专利申请的优先权, 其全部内容通过引用结合在本申请中。 技术领域
本发明涉及通信技术领域,特别涉及一种小区间资源协调的方法 和设备。 背景技术
小区间干扰协调的基本思想就是以通过小区间协调的方式对边 缘用户资源的使用进行限制, 包括限制哪些时频资源可用, 或者在一 定的时频资源上限制其发射功率, 如图 1所示, 为现有技术中频率软 复用技术示意图, 以此方案来达到避免和降低干扰, 保证边缘覆盖速 率的目的。 小区间干扰协调可以采用静态的方式, 也可以采用半静态 的方式。
静态干扰协调的基本思想是事先规划好每个小区边缘用户可用 的频率或在哪些 PRB ( Physical Resource Block, 物理资源块 )上大功 率发送,不同小区边缘用户可用的资源不同,来达到干扰协调的目的。 半静态干扰协调通过在基站间交互负载信息, 了解邻区的资源使用以 及干扰情况, 在调度本小区的 UE时尽量避开邻区已经利用的或者干 扰比较大的 PRB, 或者在这些 PRB上降功率发送, 同时把自身的资 源利用情况告诉邻区, 尽量避免邻区间的资源碰撞, 来达到干扰协调 的目的。 标准中定义了上行干扰负载指示 ( UL interference overload indication ), 上行高干扰指示 ( UL high interference indication ), 窄带 相对发射功率( Relative Narrowband Tx Power, RNTP )用来通知周 边小区本小区的干扰负载情况, 便于周边小区做干扰协调。
在现有技术中, 上下行信号子载波映射示意图如图 2A和图 2B 所示, 其中, LTE ( Long Term Evolution, 长期演进) 系统中下行子 载波以直流电平为中心向两边均勾分布, 但直流电平上不映射子载 波, 如图 2A所示; LTE系统中上行子载波均勾分布在整个系统带宽 上, 但中心载频偏离直流电平 7.5kHz, 如图 2B所示。 因此, 上下行 信号即使配置在不同的资源块上, 也无法正交, 如图 3所示, 为现有 技术中上下行子载波间干扰示意图。
LTE 系统控制信息和数据传输采用不同的信道, 如上行采用 PUCCH ( Physical Uplink Control Channel, 物理上行控制信道)承载 控制信息, PUSCH ( Physical Uplink Shared Channel, 物理上行共享 信道) 7 载数据, 下行采用 PDCCH ( Physical Downlink Control Channel , 物理下行控制信道) 承载控制信息, PDSCH ( Physical Downlink Shared Channel, 物理下行共享信道)承载数据。 随着技术 的发展, PDCCH已无法满足下行控制信息的传输需求, 目前增强型 的 PDCCH ( evolved PDCCH, ePDCCH )正在研究。 分配给控制信道 的资源具有一定的特征, 如 PUCCH通常分布在系统带宽的两侧, PDCCH分布在子帧的前 1-3个符号上, ePDCCH类似于 PDSCH分配 在几个资源块上,但频域位置相对固定。控制信息是数据传输的基础, 干扰控制信息对系统性能的影响更明显。 因此, 进行干扰协调时, 控 制信息的优先级应该高于数据。 因为 PDCCH是整个带宽分布的, 没 有协调的余地, 因此, 下行控制信息的协调只考虑 ePDCCH。
在实现本发明的过程中,发明人发现现有技术中至少存在以下问 题:
当前采用的干扰协调技术, 如前所述, 只是粗略地划分各个小区 的资源, 没有对数据和控制信息进行区分, 这样无法保证控制信息的 传输性能。
另外, 当前采用的干扰协调技术主要解决同方向的干扰, 而对于 不同方向的干扰, 仅仅通过现有技术中的分配正交的资源的方案, 并 不能消除干扰的影响。 发明内容
本发明实施例提供一种小区间资源协调的方法和设备,解决现有 的技术方案中不能有效的消除小区间干扰的问题。
为达到上述目的,本发明实施例一方面提供了一种小区间资源协 调的方法, 至少包括以下步骤:
网络设备获取周边小区的资源调度信息和上下行配置信息; 所述网络设备根据所述周边小区的资源调度信息和上下行配置 信息, 对当前小区进行资源调度, 在同一个子帧上的不同方向的业务 之间预留保护资源块, 其中, 所述不同方向的业务至少包括当前小区 与周边小区的不同方向的业务。
另一方面, 本发明实施例还提供了一种网络设备, 至少包括: 获取模块, 用于获取周边小区的资源调度信息和上下行配置信 调度模块,用于根据所述获取模块所获取的周边小区的资源调度 信息和上下行配置信息, 对当前小区进行资源调度, 在同一个子帧上 的不同方向的业务之间预留保护资源块, 其中, 所述不同方向的业务 至少包括当前小区与周边小区的不同方向的业务。
与现有技术相比, 本发明实施例所提出的技术方案具有以下优 点:
通过应用本发明实施例的技术方案,根据获取到的周边小区的资 源调度信息和上下行配置信息进行资源调度和保护资源块的预留,从 而, 使相邻小区能够选择合适的资源分配方式, 抑制了小区间干扰, 特别是上下行信号的干扰。 附图说明
图 1为现有技术中频率软复用技术示意图;
图 2A和图 2B为现有技术中上下行信号子载波映射示意图; 图 3为现有技术中上下行子载波间干扰示意图; 图 4 为本发明实施例所提出的一种小区间资源协调的方法的流 程示意图;
图 5A和图 5B为本发明实施例所提出的一种具体应用场景下的 小区间资源协调的方法的流程示意图;
图 6 为本发明实施例所提出的具体的应用场景中的保护资源块 的预留方案的示意图;
图 7为本发明实施例提出的一种网络设备的结构示意图; 图 8为本发明实施例提出的一种获耳 ^莫块的结构示意图; 图 9为本发明实施例提出的另一种获耳 ^莫块的结构示意图。 具体实施方式
如背景技术所述, 作为两大基本双工制式之一的 TDD ( Time Division Duplexing, 时分双工)模式, 在宽带移动通信对带宽需求不 断增长的背景下, 受到了越来越多的关注。 TDD 系统中上行和下行 传输使用相同的频率资源, 在不同的时隙上传输上行 /下行信号。 在 常见的 TDD系统中, 包括 3G ( 3rd Generation,第三代移动通信系统 ) 的 TD-SCDMA ( Time Division-Synchronous Code Division Multiple Access, 时分同步码分多址) 系统和 4G ( 4th Generation, 第四代移 动通信系统) 的 TD-LTE ( TD-SCDMA Long Term Evolution , TD-SCDMA 的长期演进) 系统, 上行和下行时隙的划分是静态或半 静态的,通常的做法是在网络规划过程中根据大致的业务比例确定统 一的上下行时隙比例并保持不变。这在宏小区大覆盖的背景下是较为 筒单的做法, 并且也较为有效。 而随着技术发展, 越来越多的微小区 ( Pico cell ), 家庭基站 (Home NodeB )等低功率基站被部署用于提 供局部的小覆盖。 一方面, 这类小区主要的业务类型(例如, 数据业 务)与宏小区 (例如, 语音业务)不同, 因此, 上下行时隙的配比需 求差异较大。 另一方面, 这类小区的用户数量较少, 且用户业务需求 变化较大, 因此小区的上下行业务比例需求存在动态改变的情况。 基于此, 小区配置不同的上下行时隙比引起了关注, 特别是动态 地改变。但这些方案的应用障碍是会造成相邻小区之间严重的交叉时 隙干扰, 这些干扰包括同频的相邻小区干扰, 也包括邻频的相邻小区 干扰。 通常, 邻频干扰由于有保护频带或基带滤波的处理, 干扰弱化 很多。 相反, 同频干扰就会严重很多。 这类干扰如果不能解决, 不但 不能得到灵活配置上下行比例的好处,反而造成整个网络瘫痪。另夕卜, 由于 LTE 系统中上下行信号的生成方式不同, 因此, 如果直接采用 当前网络中小区间干扰协调的方式, 只能抑制同方向信号的干扰, 对 相反方向干扰的抑制很有限。
为了克服这样的缺陷,本发明实施例提出了一种基于保护资源块 的小区间资源协调的方法,能够有效抑制不同方向信号(上下行信号) 的干扰。
如图 4所示,为本发明实施例所提出的一种小区间资源协调的方 法的流程示意图, 该方法具体包括以下步骤:
步骤 S401、 网络设备获取周边小区的资源调度信息和上下行配 置信息。
根据网络设备在实际应用场景中的物理实体的类型差异,本步骤 可以分为以下两种情况。
情况一、 当所述网络设备具体为对应当前小区的基站时, 所述基 站接收对应周边小区的其他基站所发送的周边小区的资源调度信息 和上下行配置信息,或所述基站接收对应周边小区的其他基站所发送 的周边小区的资源调度信息并测量其他基站的上下行配置信息。
情况二、 当所述网络设备具体为控制多个基站的中心节点时, 所 述中心节点获取对应周边小区的其他基站所发送的周边小区的资源 调度信息和上下行配置信息。
在实际应用中, 所述资源调度信息, 具体为以下信息的一种或多 种:
( 1 )相应小区的资源占用信息。
当所述资源调度信息具体为相应小区的资源占用信息时,对于上 行资源, 所述资源调度信息具体包括 PUCCH、 PUSCH和 PRACH所 需要的所有资源信息, 对于下行资源, 所述资源调度信息具体包括 PDSCH和 ePDCCH所需要的所有资源信息。
( 2 )相应小区的控制部分的资源占用信息和数据部分的资源占 用信息。
当所述资源调度信息具体为相应小区的控制部分的资源占用信 息和数据部分的资源占用信息时, 对于上行资源, 所述控制部分的资 源占用信息具体包括 PUCCH和 PRACH所需要的资源信息, 所述数 据部分的资源占用信息具体包括 PUSCH所需要的资源信息, 对于下 行资源, 所述控制部分的资源占用信息具体包括 ePDCCH所需要的 资源信息, 所述数据部分的资源占用信息具体包括 PDSCH所需要的 资源信息。
( 3 )相应小区中没有被占用的资源信息。
当所述资源调度信息具体为相应小区中没有被占用的资源信息 时, 对于上行资源, 所述资源调度信息具体包括除 PUCCH、 PUSCH 和 PRACH所需要的所有资源信息以外的资源信息, 对于下行资源, 所述资源调度信息具体包括 PDSCH和 ePDCCH所需要的所有资源信 息以外的资源信息。
在具体的实施场景中, 所述资源调度信息的形式, 具体为资源块 数目, 和 /或资源块序号, 和 /或响应资源块上的发射功率信息。
具体的资源调度信息的形式可以根据实际需要进行调整,这样的 变化并不影响本发明的保护范围。
在本发明实施例所提出的技术方案中,上述的对应周边小区的其 他基站所发送的周边小区的资源调度信息, 具体通过以下方法获得: 其他基站根据各自相应周边小区的业务量需求估算获得; 或, 其他基站根据各自相应周边小区中的用户容量进行预先配置; 或,
其他基站根据各自相应周边小区的当前子帧的资源块占用情况 进行确定; 或, 其他基站根据各自相应周边小区之前一段时间的资源块占用情 况统计获得。
在实际的应用场景中, 对于对应周边小区的各基站, 获取各自相 以采用上述的任何一种方式,也可以采用能够达到相同技术效果的其 他方式, 这样的变化并不影响本发明的保护范围。
另一方面, 上述的上下行配置信息, 具体为以下信息的一种或多 种。
( 1 )子帧的上下行配置信息。
当所述上下行配置信息具体为子帧的上下行配置时,所述上下行 配置信息通过其他基站所发送的信息获得,或者通过周边小区上 4艮给 中心节点的信息获得, 或者通过小区中终端设备所上报的信息获得。
( 2 )子帧的干扰情况。
当所述上下行配置信息具体为子帧的干扰情况时,所述上下行配 置信息通过测量获得, 其中, 所述测量具体由基站执行, 或由终端设 备执行并将测量结果上报给基站。
在实际的应用场景中, 具体的测量方式可以如下:
所述网络设备判断当前子帧的干扰能量是否高于预设阈值, 其 中, 预设阈值是系统中预先设置的用于区分干扰能量大小的一个数 值, 数值大小可以根据实际需要进行调整。
如果判断结果为是, 即干扰能量比较大, 所述网络设备确定干扰 源是方向不同的基站, 所述当前子帧为下行子帧。
如果判断结果为否, 即干扰能量比较小, 所述网络设备确定干扰 源是同方向小区的终端设备, 所述当前子帧为上行子帧。
步骤 S402、 所述网络设备根据周边小区的资源调度信息和上下 行配置信息, 对当前小区进行资源调度, 在同一个子帧上的不同方向 的业务之间预留保护资源块。
其中,所述不同方向的业务至少包括当前小区与周边小区的不同 方向的业务。 在具体的实施场景中,所述保护资源块具体为上下行信号调度的 资源块之间所保留的一些不传输任何信息的资源块, 其中, 所述上下 行信号至少包括所述周边小区的不同方向的上下行信号。
需要进一步指出的是,上述的保护资源块的预留方式可以包括以 下两种情况:
( 1 )如果上述的当前小区与周边小区的不同方向的业务所对应 的资源之间存在不传输信息的资源, 那么, 这样的资源可以直接作为 保护资源块, 而不再需要流行额外的预留保护资源块。
( 2 )如果上述的当前小区与周边小区的不同方向的业务所对应 的资源之间不存在不传输信息的资源, 而是直接相邻, 那么, 便需要 调整资源配置,在这样的两部分资源之间额外预留不传输信息的资源 作为保护资源块。
另一方面,上述的不同方向的业务不仅可以包括当前小区与周边 小区的不同方向的业务,同样也可以包括同一个小区中不同方向的业 务, 通过这样的方式, 不仅可以避免不同小区之间不同方向业务之间 所造成的干扰,也可以避免同一小区中不同方向业务之间所造成的干 扰。
在实际应用中, 保护资源块具体的分配方法包括:
所述网络设备根据当前的干扰功率确定相应的保护资源块的分 配策略; 或,
所述网络设备根据当前干扰功率与有用信号功率的比值确定相 应的保护资源块的分配策略; 或,
所述网络设备根据当前协议的内容确定保护资源块的分配策略; 或,
所述网络设备根据当前的系统带宽确定保护资源块的分配策略。 进一步的, 所述干扰功率由被干扰基站测量获得, 或由小区中的 终端设备测量获得。
另一方面,所述有用信号功率具体为当前小区所对应的基站的发 射功率,或由小区中的终端设备对基站所发送信号进行测量所获得的 功率信息。
在实际的应用场景中, 所述保护资源块的实现方式, 具体包括: 当所述网络设备具体为对应当前小区的基站,或控制多个基站的 中心节点时,如果预留的保护资源块的信息包含在所接收到的所述周 边小区的资源调度信息中,则所述网络设备根据所述周边小区的资源 调度信息进行当前小区的资源调度, 放弃额外预留保护资源块; 或, 当所述网络设备具体为对应当前小区的基站时,如果预留的保护 资源块的信息没有包含在所接收到的所述周边小区的资源调度信息 中,所述网络设备在根据所述周边小区的资源调度信息进行当前小区 的资源调度时, 额外预留保护资源块。
在具体的实施场景中, 为了提高系统的资源利用率, 所述网络设 备在同一个子帧中, 将同一个方向的资源进行连续分配, 从而, 避免 在由于同一个方向的资源之间没有连续分配,而导致预留保护资源块 的数量增多, 对系统资源造成浪费。
与现有技术相比, 本发明实施例所提出的技术方案具有以下优 点:
通过应用本发明实施例的技术方案,根据获取到的周边小区的资 源调度信息和上下行配置信息进行资源调度和保护资源块的预留,从 而, 使相邻小区能够选择合适的资源分配方式, 抑制了小区间干扰, 特别是上下行信号的干扰。
下面, 结合具体的应用场景, 对本发明实施例所提出的技术方案 进行说明。
本发明实施例给出了一种 TDD小区间资源协调方法, 使得相邻 小区能够通过协商的方式选择合适的资源分配方式,从而规避交叉时 隙干 4尤对系统性能不利影响。
为便于说明, 这里假设同一网络中的相邻 TDD小区是同频的并 且是时间同步的。
本发明实施例的具体方案法如下:
资源调度器根据周边小区的资源调度信息和上下行配置信息等 进行资源调度。 对于同一子帧上不同方向(上下行)的业务, 资源调 度器为不同方向的业务之间预留保护资源块。
其中, 对应前述的步骤 S401中的说明, 上述的资源调度信息可 以是以下一种或几种, 但不限于此:
( 1 )本小区的资源占用信息, 即本小区用于数据和信令传输的 资源。
对于上行资源, 上述的资源调度信息包括 PUCCH和 PUSCH以 及 PRACH所需要的所有资源。 对于下行资源, 上述的资源调度信息 包括 PDSCH, 如果系统中有 ePDCCH, 也包括 ePDCCH需要的所有 资源。
( 2 )本小区的控制部分的资源占用信息和数据部分的资源占用 信息。
因为控制信息和数据传输的重要性不同,为了优先保证控制信息 的资源分配, 本小区的资源占用信息包括控制部分和数据部分, 并且 区别通知。
对于上行资源, PUCCH需要的资源作为资源占用信息的控制部 分; PUSCH和 PRACH需要的资源作为资源占用信息的数据部分。 同理, 对于下行资源, ePDCCH (如果系统中有 ePDCCH )需要的资 源作为资源占用信息的控制部分; PDSCH需要的资源作为资源信息 的数据部分。
其中, 区分控制信息和数据的资源调度信息, 其指示方式包括将 控制和数据占用的资源信息使用各自独立的信令进行指示
( 3 )本小区不使用的资源, 即本小区用于数据和信令传输的所 有资源以外的资源。
对于上行资源, 资源数据和信令传输的所有资源包括 PUCCH和 PUSCH 以及 PRACH所需要的所有资源。 对于下行资源, 数据和信 令传输的所有资源包括 PDSCH, 如果系统中有 ePDCCH, 也包括 ePDCCH需要的所有资源。
无论是上述的哪种类型, 在具体的实施场景中, 资源调度信息的 内容可以表示为资源块数目和 /或资源块序号, 或者也可以包含响应 资源块上的发射功率等级信息,具体的内容的变化并不会影响本发明 的保护范围。
在实际的应用场景中, 所述资源调度信息可以根据如下方法获 得, 但不限于此: 本小区根据业务量需求估算获得,或本小区根据 用户容量预先配置的值, 或本小区当前子帧的资源块占用情况, 或本 小区之前一段时间的资源块占用情况统计获得。
另一方面, 上下行配置信息指, 包括一种或几种:
( 1 )子帧的上下行配置。
子帧的上下行配置可由下行控制信道指示获得,或由高层信令指 示获得, 以执行主体来区分, 则可以包括以下三种情况:
情况 A、 通过其他基站所发送的信息获得, 即通过基站之间的交 互实现信息的获得。
情况 B、 通过周边小区上4艮给中心节点的信息获得, 在此种情况 中, 中心节点控制多个基站, 各基站所对应的小区会将相应的信息上 报给中心节点, 从而, 相应的周边小区的上下行配置信息可以直接从 中心节点处获取。
情况 C、 通过小区中终端设备所上报的信息获得, 即小区中的终 端设备进行周边小区的上下行配置信息的测量,并将测量结果上报给 基站。
无论采用上述的哪种情况,上下行配置信息的具体形式可以以一 个或多个无线帧为单位指示, 也可以以一个或多个子帧为单位指示。
( 2 )子帧的干扰情况。
本子帧的干扰情况可以通过测量获得, 其中, 所述测量具体由基 站执行, 或由终端设备执行并将测量结果上报给基站。
例如根据干扰能量判定, 通常干扰平均能量较大时, 干扰源是方 向不同的基站,可判定该基站当前子帧为下行。干扰平均能量较小时, 干扰源是同方向小区的终端, 可判定该基站当前子帧为上行。
具体的, 根据具体的物理实体类型的差异, 本发明实施例所提出 的技术方案也存在以下两种情况:
情况一、 所述资源调度器可以是基站侧的, 资源调度信息和上下 行配置信息需要在基站之间交互。
通常地, 资源调度信息通过 X2接口交互, 上下行配置信息可以 通过 X2接口交互, 或测量获得, 具体的, 相应的实施场景的示意图 如图 5 A所示。
情况二、 所述资源调度器也可以是控制服务多个基站的中心节 点,资源调度信息和上下行配置信息只需要由基站汇报给中心节点即 可。
通常地, 基站通过 S1接口回报给中心节点, 具体的, 相应的实 施场景的示意图如图 5B所示。
另一方面,本发明实施例所提出的保护预留资源块指上下行信号 调度的资源块之间保留一些资源块不传输任何信息, 其中, 所述上下 行信号至少包括所述周边小区的不同方向的上下行信号。
进一步的, 保护资源块的分配方法具体包括以下几种:
( 1 )与干扰功率绑定。
例如将干扰功率划分 N个等级,分别对应 N个保护资源块配置; 具体地, 干扰功率<=3(18, 则保护资源块为 1个资源块; 3dB<干扰功 率<=15(18, 则保护资源块为 5个资源块; 干扰功率>15(18, 则保护资 源块为 10个资源块。
在具体的应用场景中, 具体的实现过程并不限于此分配方案, 其 他能够达到相同效果的方案,或者本方案中相应参数的数值变化均可 以应用于本发明实施例中, 这样的变化并不影响本发明的保护范围。
其中, 干扰功率可以由被干扰基站测量获得, 也可以由小区中的 终端设备测量, 并反馈给基站来获得。
( 2 )与干扰 /有用信号功率比值绑定。
例如将干扰 /有用信号功率比值划分 N个等级, 分别对应 N个保 护资源块配置方法。
具体地, 干扰 /有用信号功率比值 <=3dB, 则保护资源块为 1个资 源块; 3dB〈干扰 /有用信号功率比值 <=15dB, 则保护资源块为 5个资 源块; 干扰 /有用信号功率比值 >15dB, 则保护资源块为 10个资源块。
在具体的应用场景中, 具体的实现过程并不限于此分配方案, 其 他能够达到相同效果的方案,或者本方案中相应参数的数值变化均可 以应用于本发明实施例中, 这样的变化并不影响本发明的保护范围。
其中, 干扰功率指来自其他小区的干扰能量, 通常由基站测量获 得, 或根据终端设备的测量反馈来获得; 有用信号功率指当前小区所 对应的基站的发射功率,或由小区中的终端设备对基站所发送信号进 行测量所获得的功率信息。
( 3 )协议约定。
例如保护资源块为 1个资源块。
在具体的应用场景中, 具体的实现过程并不限于此分配方案, 其 他能够达到相同效果的方案,或者本方案中相应参数的数值变化均可 以应用于本发明实施例中, 这样的变化并不影响本发明的保护范围。
( 4 )与系统带宽绑定。
例如 lOMhz以下系统带宽情况下预留保护资源块为 A个 RB, lOMhz带宽以上系统带宽情况下预留保护资源块为 B个 RB。
进一步的, 所述预留保护资源块的实现方式包括以下一种或几 种。
( 1 )预留的保护资源块可以包含在资源调度信息中, 即资源调 度信息中指示的资源块不仅包括用于传输信令或数据的资源块,也包 含预留的保护资源块。基站进行本小区调度时, 不再额外预留保护资 源块;
( 2 ) 资源调度信息仅包含实际用于传输信令或数据的资源块, 基站进行本小区调度时, 需要额外考虑预留保护资源块, 即不仅避开 其他小区有调度的资源, 也要避开保护资源块。
在具体的应用场景中, 具体的实现过程并不限于此分配方案, 其 他能够达到相同效果的方案,或者本方案中相应参数的数值变化均可 以应用于本发明实施例中, 这样的变化并不影响本发明的保护范围。 为了提高系统的资源利用率,本发明实施例可以通过将同一个方 向的资源进行连续分配来避免在出现由于同一个方向的资源之间插 入其他方向的资源的情况下, 需要增加更多的保护资源块, 以及由此 所带来的资源浪费, 如图 6所示, 为本发明实施例所提出的具体的应 用场景中的保护资源块的预留方案的示意图, 当然, 图中所列举的形 式只是示例, 资源调度方案不限于此。
与现有技术相比, 本发明实施例所提出的技术方案具有以下优 点:
通过应用本发明实施例的技术方案,根据获取到的周边小区的资 源调度信息和上下行配置信息进行资源调度和保护资源块的预留,从 而, 使相邻小区能够选择合适的资源分配方式, 抑制了小区间干扰, 特别是上下行信号的干扰。
为了实现本发明实施例的技术方案,本发明实施例还提供了一种 网络设备, 其结构示意图如图 7所示, 至少包括:
获取模块 71 , 用于获取周边小区的资源调度信息和上下行配置 信息;
调度模块 72, 用于根据所述获取模块 71所获取的周边小区的资 源调度信息和上下行配置信息, 对当前小区进行资源调度, 在同一个 子帧上的不同方向的业务之间预留保护资源块, 其中, 所述不同方向 的业务至少包括当前小区与周边小区的不同方向的业务。
其中, 如图 8所示, 如果所述网络设备具体为对应当前小区的基 站或控制多个基站的中心节点, 所述获取模块 71 , 具体包括:
第一接收子模块 711 , 用于接收对应周边小区的其他基站所发送 的周边小区的资源调度信息;
第二接收子模块 712, 用于接收对应周边小区的其他基站所发送 的周边小区的上下行配置信息。
如图 8所示, 如果所述网络设备具体为对应当前小区的基站, 所 述获取模块 71 , 具体包括:
接收子模块 713, 用于接收对应周边小区的其他基站所发送的周 边小区的资源调度信息;
测量子模块 714, 用于测量其他基站的上下行配置信息。
在实际的应用场景中, 所述资源调度信息, 具体为:
相应小区的资源占用信息; 和 /或,
相应小区的控制部分的资源占用信息和数据部分的资源占用信 息; 和 /或,
相应小区中没有被占用的资源信息。
所述上下行配置信息, 具体为:
子帧的上下行配置信息; 和 /或,
子帧的干扰信息。
另一方面, 所述调度模块 72, 具体用于:
根据当前的干扰功率确定相应的保护资源块的分配策略; 或, 根据当前干扰功率与有用信号功率的比值确定相应的保护资源 块的分配策略; 或,
根据当前协议的内容确定保护资源块的分配策略; 或, 根据当前的系统带宽确定保护资源块的分配策略。
其中,所述保护资源块具体为上下行信号调度的资源块之间所保 留的一些不传输任何信息的资源块,所述上下行信号至少包括所述周 边小区的不同方向的上下行信号。
与现有技术相比, 本发明实施例所提出的技术方案具有以下优 点:
通过应用本发明实施例的技术方案,根据获取到的周边小区的资 源调度信息和上下行配置信息进行资源调度和保护资源块的预留,从 而, 使相邻小区能够选择合适的资源分配方式, 抑制了小区间干扰, 特别是上下行信号的干扰。
通过以上的实施方式的描述,本领域的技术人员可以清楚地了解 到本发明实施例可以通过硬件实现,也可以借助软件加必要的通用硬 件平台的方式来实现。基于这样的理解, 本发明实施例的技术方案可 以以软件产品的形式体现出来,该软件产品可以存储在一个非易失性 存储介质 (可以是 CD-ROM, U盘, 移动硬盘等) 中, 包括若干指 令用以使得一台计算机设备(可以是个人计算机, 服务器, 或网络侧 设备等)执行本发明实施例各个实施场景所述的方法。
本领域技术人员可以理解附图只是一个优选实施场景的示意图, 附图中的模块或流程并不一定是实施本发明实施例所必须的。
本领域技术人员可以理解实施场景中的装置中的模块可以按照 实施场景描述进行分布于实施场景的装置中,也可以进行相应变化位 于不同于本实施场景的一个或多个装置中。上述实施场景的模块可以 合并为一个模块, 也可以进一步拆分成多个子模块。
上述本发明实施例序号仅仅为了描述, 不代表实施场景的优劣。 明实施例并非局限于此,任何本领域的技术人员能思之的变化都应落 入本发明实施例的业务限制范围。

Claims

权利要求
1、 一种小区间资源协调的方法, 其特征在于, 至少包括以下步 骤:
网络设备获取周边小区的资源调度信息和上下行配置信息; 所述网络设备根据所述周边小区的资源调度信息和上下行配置 信息, 对当前小区进行资源调度, 在同一个子帧上的不同方向的业务 之间预留保护资源块, 其中, 所述不同方向的业务至少包括当前小区 与周边小区的不同方向的业务。
2、 如权利要求 1所述的方法, 其特征在于, 所述网络设备获取 周边小区的资源调度信息和上下行配置信息, 具体包括:
当所述网络设备具体为对应当前小区的基站时,所述基站接收对 应周边小区的其他基站所发送的周边小区的资源调度信息和上下行 配置信息,或所述基站接收对应周边小区的其他基站所发送的周边小 区的资源调度信息并测量其他基站的上下行配置信息;
当所述网络设备具体为控制多个基站的中心节点时,所述中心节 点获取对应周边小区的其他基站所发送的周边小区的资源调度信息 和上下行配置信息。
3、 如权利要求 1所述的方法, 其特征在于, 所述资源调度信息, 具体为:
相应小区的资源占用信息; 和 /或,
相应小区的控制部分的资源占用信息和数据部分的资源占用信 息; 和 /或, 相应小区中没有被占用的资源信息。
4、 如权利要求 3所述的方法, 其特征在于,
当所述资源调度信息具体为相应小区的资源占用信息时,对于上 行资源, 所述资源调度信息具体包括 PUCCH、 PUSCH和 PRACH所 需要的所有资源信息, 对于下行资源, 所述资源调度信息具体包括 PDSCH和 ePDCCH所需要的所有资源信息; 和 /或,
当所述资源调度信息具体为相应小区的控制部分的资源占用信 息和数据部分的资源占用信息时, 对于上行资源, 所述控制部分的资 源占用信息具体包括 PUCCH和 PRACH所需要的资源信息, 所述数 据部分的资源占用信息具体包括 PUSCH所需要的资源信息, 对于下 行资源, 所述控制部分的资源占用信息具体包括 ePDCCH所需要的 资源信息, 所述数据部分的资源占用信息具体包括 PDSCH所需要的 资源信息; 和 /或,
当所述资源调度信息具体为相应小区中没有被占用的资源信息 时, 对于上行资源, 所述资源调度信息具体包括除 PUCCH、 PUSCH 和 PRACH所需要的所有资源信息以外的资源信息, 对于下行资源, 所述资源调度信息具体包括 PDSCH和 ePDCCH所需要的所有资源信 息以外的资源信息。
5、 如权利要求 3所述的方法, 其特征在于, 所述资源调度信息 的形式, 具体为:
资源块数目; 和 /或,
资源块序号; 和 /或, 响应资源块上的发射功率信息。
6、 如权利要求 2所述的方法, 其特征在于, 所述上下行配置信 息, 具体为:
子帧的上下行配置信息; 和 /或,
子帧的干扰信息。
7、 如权利要求 6所述的方法, 其特征在于,
当所述上下行配置信息具体为子帧的上下行配置时,所述上下行 配置信息通过其他基站所发送的信息获得,或者通过周边小区上 ^艮给 中心节点的信息获得, 或者通过小区中终端设备所上报的信息获得; 当所述上下行配置信息具体为子帧的干扰情况时,所述上下行配 置信息通过测量获得, 其中, 所述测量具体由基站执行, 或由终端设 备执行并将测量结果上报给基站。
8、 如权利要求 7所述的方法, 其特征在于, 当所述上下行配置 信息具体为子帧的干扰情况时, 所述上下行配置信息通过测量获得, 具体包括:
所述网络设备判断当前子帧的干扰能量是否高于预设阈值; 如果判断结果为是, 所述网络设备确定干扰源是方向不同的基 站, 所述干扰源的当前子帧为下行子帧;
如果判断结果为否,所述网络设备确定干 4尤源是同方向小区的终 端设备, 所述干扰源的当前子帧为上行子帧。
9、 如权利要求 1所述的方法, 其特征在于, 所述保护资源块具 体为上下行信号调度的资源块之间所保留的一些不传输任何信息的 资源块, 其中, 所述上下行信号至少包括所述周边小区的不同方向的 上下行信号;
所述保护资源块的分配方法, 具体包括:
所述网络设备根据当前的干扰功率确定相应的保护资源块的分 配策略; 或,
所述网络设备根据当前干扰功率与有用信号功率的比值确定相 应的保护资源块的分配策略; 或,
所述网络设备根据当前协议的内容确定保护资源块的分配策略; 或,
所述网络设备根据当前的系统带宽确定保护资源块的分配策略。
10、 如权利要求 9所述的方法, 其特征在于,
所述干扰功率由被干扰基站测量获得,或由小区中的终端设备测 量获得;
所述有用信号功率具体为当前小区所对应的基站的发射功率,或 由小区中的终端设备对基站所发送信号进行测量所获得的功率信息。
11、 如权利要求 1所述的方法, 其特征在于, 所述保护资源块的 实现方式, 具体包括:
当所述网络设备具体为对应当前小区的基站,或控制多个基站的 中心节点时,如果预留的保护资源块的信息包含在所接收到的所述周 边小区的资源调度信息中,则所述网络设备根据所述周边小区的资源 调度信息进行当前小区的资源调度, 放弃额外预留保护资源块; 或, 当所述网络设备具体为对应当前小区的基站时,如果预留的保护 资源块的信息没有包含在所接收到的所述周边小区的资源调度信息 中,所述网络设备在根据所述周边小区的资源调度信息进行当前小区 的资源调度时, 额外预留保护资源块。
12、 如权利要求 1至 11 中任意一项所述的方法, 其特征在于, 所述网络设备根据所述周边小区的资源调度信息和上下行配置信息, 对当前小区进行资源调度,在同一个子帧上的不同方向的业务之间预 留保护资源块, 还包括:
所述网络设备在同一个子帧中,将同一个方向的资源进行连续分 配。
13、 一种网络设备, 其特征在于, 至少包括:
获取模块, 用于获取周边小区的资源调度信息和上下行配置信 调度模块,用于根据所述获取模块所获取的周边小区的资源调度 信息和上下行配置信息, 对当前小区进行资源调度, 在同一个子帧上 的不同方向的业务之间预留保护资源块, 其中, 所述不同方向的业务 至少包括当前小区与周边小区的不同方向的业务。
14、 如权利要求 13所述的网络设备, 其特征在于, 所述网络设 备具体为对应当前小区的基站或控制多个基站的中心节点 ,所述获取 模块, 具体包括:
第一接收子模块,用于接收对应周边小区的其他基站所发送的周 边小区的资源调度信息; 第二接收子模块,用于接收对应周边小区的其他基站所发送的周 边小区的上下行配置信息。
15、 如权利要求 13所述的网络设备, 其特征在于, 所述网络设 备具体为对应当前小区的基站, 所述获取模块, 具体包括:
接收子模块,用于接收对应周边小区的其他基站所发送的周边小 区的资源调度信息;
测量子模块, 用于测量其他基站的上下行配置信息。
16、 如权利要求 13至 15中任意一项所述的网络设备, 其特征在 于, 所述资源调度信息, 具体为:
相应小区的资源占用信息; 和 /或,
相应小区的控制部分的资源占用信息和数据部分的资源占用信 息; 和 /或,
相应小区中没有被占用的资源信息。
17、 如权利要求 13至 15中任意一项所述的网络设备, 其特征在 于, 所述上下行配置信息, 具体为:
子帧的上下行配置信息; 和 /或,
子帧的干扰信息。
18、 如权利要求 13所述的网络设备, 其特征在于, 所述调度模 块, 具体用于:
根据当前的干扰功率确定相应的保护资源块的分配策略; 或, 根据当前干扰功率与有用信号功率的比值确定相应的保护资源 块的分配策略; 或, 根据当前协议的内容确定保护资源块的分配策略; 或, 根据当前的系统带宽确定保护资源块的分配策略;
其中,所述保护资源块具体为上下行信号调度的资源块之间所保 留的一些不传输任何信息的资源块,所述上下行信号至少包括所述周 边小区的不同方向的上下行信号。
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