WO2010015206A1 - 确定小区的资源使用方式的方法和装置 - Google Patents
确定小区的资源使用方式的方法和装置 Download PDFInfo
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- WO2010015206A1 WO2010015206A1 PCT/CN2009/073123 CN2009073123W WO2010015206A1 WO 2010015206 A1 WO2010015206 A1 WO 2010015206A1 CN 2009073123 W CN2009073123 W CN 2009073123W WO 2010015206 A1 WO2010015206 A1 WO 2010015206A1
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- Prior art keywords
- subframe
- uplink
- cell
- downlink configuration
- neighboring
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- 238000000034 method Methods 0.000 title claims abstract description 48
- 238000012545 processing Methods 0.000 claims description 20
- 238000010586 diagram Methods 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/10—Dynamic resource partitioning
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
- H04W68/02—Arrangements for increasing efficiency of notification or paging channel
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
- H04W72/563—Allocation or scheduling criteria for wireless resources based on priority criteria of the wireless resources
Definitions
- the present invention relates to the field of mobile communication technologies, and in particular, to a method and apparatus for determining a resource usage mode of a cell.
- Background of the Invention In the LTE-TDD system, since the mechanism of time division duplexing is adopted, the proportion of uplink and downlink subframes can be flexibly configured.
- the frame structure of the LTE-TDD system is as shown in Figure 1. There are 10 subframes. The uplink and downlink configurations of each subframe can be flexibly changed. Seven uplink and downlink configuration modes (labeled 0-6) are defined in LTE-TDD. 1 shows:
- D is the downlink
- U is the uplink
- S is the special subframe of the subframe in FIG. 1, such as the Downlink Pilot Time Slot (DwPTS) and the uplink pilot time slot.
- DwPTS Downlink Pilot Time Slot
- UpPTS Uplink Pilot Time Slot
- GP guard interval
- the uplink and downlink configuration mode of a cell may be the same as or different from that of the neighboring cell. If the uplink and downlink configuration modes of a cell are different from those of the neighboring cell, the downlink transmission of the cell may cause strong interference to the uplink reception of the neighboring cell.
- the present invention provides a method and apparatus for determining a resource usage mode of a cell, to solve the problem of strong inter-cell interference that occurs when uplink and downlink configurations of neighboring cells in the system are different.
- the present invention is implemented as follows:
- a method for determining a resource usage mode of a cell including:
- the embodiment of the present invention further provides another method for determining a resource usage manner of a cell, including:
- the current cell is configured to indicate the information of the uplink and downlink configuration mode of the subframe of the local cell; the information is sent to the neighboring cell, where the neighboring cell configures the uplink and downlink configuration mode of the subframe and the current cell subframe.
- the uplink and downlink configuration modes are compared, and the use priority of the subframe of the neighboring cell is set according to the comparison result.
- the embodiment of the present invention further provides an apparatus for determining a resource usage mode of a cell, including:
- a determining unit configured to determine an uplink and downlink configuration manner of a subframe of each neighboring cell
- a comparing unit configured to perform an uplink and downlink configuration manner of a subframe of the current cell and an uplink and downlink configuration manner of the subframe of the neighboring cell Comparison
- a priority setting unit configured to set a use priority of a subframe of the local cell according to the comparison result.
- the device of the present invention simultaneously discloses another device for determining a resource usage mode of a cell, including:
- a setting unit configured to set information for indicating an uplink and downlink configuration manner of a subframe of the local cell
- the embodiment of the present invention provides a method for mutually notifying an uplink and downlink configuration mode, and setting a use priority of a subframe resource of a cell according to the method, thereby controlling a method for using the subframe. Therefore, the subframe resources can be reasonably applied, effectively reducing interference between cells, and improving system capacity and efficiency.
- FIG. 1 is a schematic diagram of a frame structure of an LTE-TDD system
- FIG. 2 is a flow chart of a method for determining a resource usage mode of a cell according to an embodiment of the present invention
- FIG. 3 is a structural diagram of an existing serving cell information
- FIG. 4 is a structural diagram of a serving cell information defined in an embodiment of the present invention.
- Figure 5 is a schematic diagram of a cell scene
- FIG. 6 is a schematic structural diagram of an apparatus for determining a resource usage manner of a cell according to an embodiment of the present disclosure
- Figure 7 is a schematic diagram of the structure of the priority setting unit 1;
- Figure 8 is a schematic diagram of the structure of the priority setting unit 2;
- Figure 9 is a schematic diagram of the structure of the priority setting unit 3;
- Figure 10 is a schematic diagram of the structure of the priority setting unit 4.
- FIG. 11 is a schematic structural diagram of another apparatus for determining a resource usage manner of a cell according to an embodiment of the present disclosure.
- FIG. 12 is a schematic structural diagram of another apparatus for determining a resource usage manner of a cell according to an embodiment of the present invention.
- the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of them. An embodiment. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
- FIG. 2 it is a flowchart of a method for determining a resource usage mode of a cell according to an embodiment of the present invention.
- Step S201 When the initial establishment of the cell or the configuration of the uplink and downlink changes, notify the neighboring cell of the uplink and downlink configuration mode of the current cell.
- Step S202 Receive a notification of the neighboring cell, and determine an uplink and downlink configuration mode of the neighboring cell.
- Step S203 Compare the uplink and downlink configuration mode of the current cell with the uplink and downlink configuration mode of the neighboring cell.
- Step S204 Set a usage priority of each subframe of the current cell according to the comparison result, so as to determine a usage manner of the subframe frame resource.
- the uplink/downlink configuration mode may be notified to the neighboring cell, and then the notification of the neighboring cell may be received, or the neighboring cell may be notified of the uplink and downlink configuration mode after receiving the notification of the neighboring cell.
- each cell in the network needs to send notification information for indicating the uplink and downlink configuration mode of the current cell, and the receiving neighboring cell is used to indicate the upper and lower of the neighboring cell. Notification information for line configuration mode. From the perspective of the receiver, it is only necessary to perform the above steps S202 - S204; from the sender's point of view, only step S201 described above is performed, and steps S202 - S204 are performed by the information receiver.
- a subframe for an uplink application (or a downlink application) of the current cell corresponds to a subframe for a downlink application (or an uplink application) of a neighboring cell
- the subframe should be used as far as possible for data transmission or data reception, that is, the subframe is set to have a lower usage priority; conversely, if the neighboring cell and the sub-subsidiary The frame is not interfered by the downlink interference of the neighboring cell (or the uplink interference to the neighboring cell;), the subframe should be used to transmit data or receive data, so that the higher priority of the subframe can be given, so that This sub-frame is used as much as possible.
- the present invention compares the uplink and downlink configuration manners of the subframes of the current cell with the uplink and downlink configuration manners of the corresponding subframes in the neighboring cells, and the uplink and downlink configuration manners of the corresponding subframes
- the number of neighboring cells with the opposite configuration or the number of neighboring cells is set, and the priority of the use of the subframe of the cell is set.
- the notification of the uplink and downlink configuration mode of the local cell may be implemented by sending the notification information of the uplink and downlink configuration mode of the local cell, and the notification information may include only information for indicating the uplink and downlink configuration mode, or may be carried.
- Serving Cell Information indicating a field of the uplink and downlink configuration mode of the local cell.
- the existing service cell information structure shown in FIG. 3 includes information such as a physical layer ID (identification), a cell ID tracking area number, a broadcast PLMN (public land mobile network), and a center frequency point.
- This paper defines a new type of serving cell information. Its structure is shown in Figure 4.
- the service cell information defined in this document has more "upstream and downlink configuration mode" fields, indicating the current cell.
- the uplink and downlink configuration modes may be any one of the seven uplink and downlink configuration modes shown in Table 1.
- the "uplink and downlink configuration mode" field may also be a subframe number for uplink or a subframe number for downlink, for example, "2, 3, 7, 8", it may be indicated that the subframes for uplink (or downlink) are subframe 2, subframe 3, subframe 7, and subframe 8.
- the request (X2 Setup request) message carries the serving cell information shown in FIG. 4 above.
- the cell After obtaining the uplink and downlink configuration mode of the neighboring cells, the cell compares with the uplink and downlink configuration mode of the cell. Specifically, the uplink and downlink configuration of the same subframe is compared. For a subframe that is set for the uplink application, by knowing the uplink and downlink configuration of the same subframe in the neighboring cell, determine the number of neighboring cells that are used for the downlink application of the same subframe, and the greater the number, the more If the uplink application of the subframe of the local cell is more likely to be interfered by the downlink interference of the neighboring cell, the lower the usage priority is set, and the smaller the number, the uplink application of the subframe of the local cell.
- the higher the usage priority is set.
- the number of neighboring cells that are used for the uplink application of the same subframe is determined. , indicating that the data transmission of the subframe of the local cell is more likely to cause interference to the uplink application of the neighboring cell, the lower the usage priority is set; the smaller the number, the smaller the number of the cell.
- the uplink and downlink configurations of cell 1 are initially set to the second configuration type, as shown in Table 2:
- subframe 3 is set for downlink application
- subframe 7 is set for uplink application
- local cell subframe 3 can be set according to uplink and downlink configuration of subframes 3 and 7 of 6 neighboring cells.
- the priority of use specifically, may be set according to the number of neighboring cells N1 (or N2) that is set for the uplink application (or downlink application) in subframe 3 (or 7), the more the number, the priority of use The lower the level.
- the application of 3, at this time, the use priority of the subframe 3 can be set to the highest, so that the subframe 3 can be used as much as possible when performing the downlink application.
- the application of the subframe 3 of the other five neighboring cells is not affected, and the priority of the subframe 3 of the current cell may be set to the next highest level; ..., and so on.
- the subframe 3 of the neighboring cell is used for the uplink application, and the downlink application of the subframe 3 of the neighboring cell may affect the uplink application of the subframe 3 of all the neighboring cells, and the priority of the subframe 3 of the local cell may be prioritized. Set to the lowest.
- the use priority of the subframe 7 can be set to the highest, so that the subframe 7 can be used as much as possible when performing the uplink application.
- the priority of the subframe 7 of the current cell can be set to the next highest, and so on.
- the subframe 7 of the neighboring cell is used for the downlink application, and the uplink application of the subframe 7 of the neighboring cell may be affected by the downlink application of the subframe 7 of all the neighboring cells, and the priority of the subframe 7 of the local cell may be prioritized. Set to the lowest.
- the cell 1 selects according to the priority of use of each subframe from high to low, and the priority is higher.
- the sub-frames are used as much as possible for the uplink and downlink applications, and are used selectively for the lower priority sub-frames according to the system load. For example, when the system load is not large, try not to use the sub-frames. , and when the system load is large, the subframe is used appropriately.
- the subframe with lower priority can also be used, which affects the communication quality.
- the number N1 or N2 exceeds a preset threshold, it may be determined that the subframe is unavailable.
- the preset threshold can be adjusted according to the actual operation of the network or the user's needs.
- the typical value can be set to the opposite setting.
- the number of zones is greater than the number of cells in the same setting.
- the same set of cells is: the same subframe is set for the same application (uplink application or downlink application), and conversely, the oppositely set cell is: the same subframe is set for different application cells .
- a usage priority of a subframe is lower than a certain threshold, it is determined that the subframe is unavailable.
- the embodiment of the present invention provides a method for mutually notifying an uplink and downlink configuration mode, and setting a usage priority of each subframe resource of the cell according to the method, so as to control a usage method of each subframe, so that each subframe resource can be used. It is reasonably applied to effectively reduce inter-cell interference and improve system capacity and efficiency.
- the embodiment of the present invention further provides an apparatus for implementing the foregoing method.
- FIG. 6 is a schematic structural diagram of an apparatus for determining a resource usage mode of a cell according to an embodiment of the present invention.
- the apparatus includes: a determining unit 100, a comparing unit 200, and a priority setting unit 300. among them:
- the determining unit 100 is configured to determine an uplink and downlink configuration manner of each neighboring cell.
- the specific manner may be as follows: receiving the notification information that is sent by the neighboring cell when the initial establishment of the cell or the configuration of the uplink and downlink changes, the notification information carries information indicating the uplink and downlink configuration mode of the local cell, and the phase is determined according to the information.
- the notification information may include only the information for indicating the uplink and downlink configuration mode, or may be the service cell information newly defined herein.
- the serving cell information carries a field for indicating the uplink and downlink configuration mode of the local cell, and its structure is shown in FIG. 4 . Shown.
- the comparing unit 200 is configured to compare the uplink and downlink configuration mode of the current cell with the uplink and downlink configuration mode of the neighboring cell, and the specific comparison mode may be performed for the uplink and downlink configuration of each subframe, for example, comparing the subframe of the local cell. Whether the uplink and downlink configuration mode is the same as the uplink and downlink configuration mode of the corresponding subframe in the neighboring cell.
- the priority setting unit 300 is configured to set the use of each subframe of the current cell according to the comparison result. priority.
- the specific way can be as follows:
- the priority setting unit 300 determines the number of neighboring cells or the number of neighboring cells that are opposite to the uplink and downlink configuration mode of the subframe of the current cell according to the uplink and downlink configuration manner of the corresponding subframe determined by the comparison unit 200. Set the priority of the use of the subframe of the cell.
- the determining unit may be composed of a receiving unit and a determining subunit.
- the receiving unit is configured to receive the notification information that is sent by the neighboring cell when the initial establishment or the uplink and downlink configuration changes, and the notification information carries information for indicating an uplink and downlink configuration manner of the neighboring cell.
- the determining subunit is configured to determine an uplink and downlink configuration manner of the neighboring cell according to the information indicating the uplink and downlink configuration manner of the neighboring cell.
- FIG. 7 shows a possible structure of the priority setting unit 300, which may include: a first processing unit 311 and a second processing unit 312.
- the first processing unit 311 is mainly configured to determine, according to the comparison result, the number of neighboring cells to be used for the downlink application, which is to be associated with the subframe set for the uplink application in the current cell.
- the second processing unit 312 is mainly configured to determine, according to the quantity, the priority of the subframe that is set for the uplink application in the current cell, and the more the number, the lower the priority.
- FIG. 8 shows another structure of the priority setting unit 300, including: a third processing unit 313 and a fourth processing unit 314.
- the third processing unit 313 is configured to determine, according to the comparison result, that it is to be used in the current cell.
- the corresponding subframe of the downlink applied subframe sets the number of neighboring cells for the uplink application.
- the fourth processing unit 314 is configured to determine, according to the quantity, a priority of the subframe that is set for the downlink application in the current cell, and the more the number, the lower the priority.
- the cell After setting the use priority of each subframe in the cell, when the selected subframe is used for uplink application or downlink application, the cell selects according to the priority of use of each subframe from high to low, and uses the child with higher priority.
- the frame will be used as much as possible for the uplink and downlink applications, and the subframe with lower priority will be selectively used according to the system load. For example, when the system load is small, try not to use the subframe. This sub-frame can be used appropriately when the system is heavily loaded.
- the subframe with lower priority can also be used, but it will affect the communication quality.
- the number exceeds a preset threshold it may be determined that the subframe is unavailable.
- the preset threshold may be adjusted according to actual network operation conditions or user requirements. The typical value may be that the number of cells set to the opposite is greater than the number of cells set by the same.
- the same set of cells is: the same subframe is set for the same application (uplink application or downlink application), and conversely, the oppositely set cell is: the same subframe is set for different application cells .
- the priority setting unit 300 may respectively set a function unit to indicate that the corresponding subframe is set as an unavailable subframe when the number exceeds the preset threshold.
- the priority setting unit shown in FIG. 9 is based on the structure shown in FIG. 7, and further includes:
- the fifth processing unit 315 is configured to, when the quantity exceeds the preset threshold, instruct the second processing unit 312 to set the uplink subframe of the current cell as a subframe that is unavailable.
- the priority setting unit shown in FIG. 10 further includes: a sixth processing unit 316, configured to: when the quantity exceeds a preset threshold, instruct the fourth processing unit 314 to describe the current cell
- the downlink subframe is set to a subframe that is not available.
- the neighboring relationships are mutual, and each cell in the network needs to send notification information for indicating the uplink and downlink configuration mode of the current cell, and the receiving neighboring cell is used to indicate the uplink and downlink of the neighboring cell. Notification information for configuration mode. That is to say, each cell is an information receiver and also a message sender. The above embodiment is described only from the perspective of the information receiver.
- the apparatus for determining a resource usage mode of the cell may include: a setting unit 400 and a sending unit 500, from the perspective of the information sender.
- the setting unit 400 is configured to set information for indicating an uplink and downlink configuration mode of the local cell
- the sending unit 500 is configured to send information to a neighboring cell
- the neighboring cell may include, for example,
- the apparatus shown in FIG. 6 to FIG. 10 compares the uplink and downlink configuration manner with the uplink and downlink configuration manner of the current cell, and sets the usage priority of the subframe of the neighboring cell according to the comparison result.
- FIG. 12 is a diagram showing another structure of the apparatus for determining a resource usage mode of a cell. Based on the structure shown in FIG. 11, the method further includes:
- the indicating unit 600 is configured to: when the current cell is initially set or the uplink and downlink configuration changes, instruct the sending unit to send the information used to indicate an uplink and downlink configuration mode of the local cell.
- the information used to indicate the uplink and downlink configuration mode of the current cell may be independent information or may be carried in the serving cell information, and the structure of the serving cell information is as shown in FIG. 4 .
- information, messages and signals can be represented using any of a number of different processes and techniques.
- the messages and information mentioned in the above description may be expressed as voltage, current, electromagnetic wave, magnetic field or magnetic particle, light field or any combination of the above.
- the software module can be placed in random access memory (RAM), memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or technical field. Any other form of storage medium known.
- RAM random access memory
- ROM read only memory
- electrically programmable ROM electrically erasable programmable ROM
- registers hard disk, removable disk, CD-ROM, or technical field. Any other form of storage medium known.
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CN2008101180542A CN101646257B (zh) | 2008-08-07 | 2008-08-07 | 确定小区的资源使用方式的方法和装置 |
CN200810118054.2 | 2008-08-07 |
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CN103959689A (zh) * | 2011-09-29 | 2014-07-30 | 诺基亚通信公司 | 用于干扰管理的方法和装置 |
CN103959689B (zh) * | 2011-09-29 | 2018-11-16 | 诺基亚通信公司 | 用于干扰管理的方法和装置 |
US10244510B2 (en) | 2015-09-25 | 2019-03-26 | Qualcomm Incorporated | Techniques for wireless communications using a modified subframe structure |
US10827469B2 (en) | 2015-09-25 | 2020-11-03 | Qualcomm Incorporated | Techniques for wireless communications using a modified subframe structure |
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Publication number | Publication date |
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CN101646257A (zh) | 2010-02-10 |
KR20110074843A (ko) | 2011-07-04 |
CN101646257B (zh) | 2011-12-14 |
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