WO2013189271A1 - 干扰信息的反馈及干扰控制方法和装置 - Google Patents
干扰信息的反馈及干扰控制方法和装置 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
Definitions
- the present invention relates to the field of wireless communications, and in particular, to a feedback and interference control method and apparatus for interference information. Background technique
- TDD Time Division Duplex
- FDD Frequency Division Duplex
- T in Figure 1 indicates transmission and R indicates reception.
- a radio frame has a length of 10 ms and contains 10 subframes, which are special subframes and regular subframes. Each subframe is Lms.
- the special subframe is divided into three slots: DwPTS (downlink special slot), GP and UpPTS (uplink special slot).
- the regular subframe includes an uplink subframe and a downlink subframe, and is used for transmitting uplink/downlink control signaling and service data.
- two special subframes located in subframe #1 and subframe #6 or a special subframe (located in subframe #1) can be configured.
- Subframe #0 and subframe #5 and the DwPTS in the special subframe are always used as the downlink transmission, and the UpPTS in the subframe #2 and the special subframe is always used for the uplink transmission, and other subframes can be configured to be used as needed. Uplink transmission or downlink transmission.
- the uplink and downlink subframe allocation supports 7 different modes.
- the specific configuration parameters are as shown in Table 2 below.
- D indicates that it is used for downlink transmission
- U indicates that it is used for uplink transmission
- S indicates that the subframe is a special subframe. It contains three parts: DwPTS, GP and UpPTS.
- the special subframe configuration and the uplink and downlink subframe allocation mode are broadcast to all users in the cell through SI (System Information).
- the TD-LTE system supports changing the above two frame configuration parameters by means of System Information Change, but this change requires a process of paging and re-reading system information, and exists. If there are thousands of ambiguities before and after the change, such as the HARQ (Hybrid Automatic Repeat reQuest) operation and scheduling, if the frame configuration changes frequently, the system performance will be seriously degraded. Moreover, the minimum frame configuration change period supported in the TD-LTE system is 640 ms, which cannot fully adapt to the dynamic change of the service.
- HARQ Hybrid Automatic Repeat reQuest
- four seed frame types are set, including fixed subframes for downlink transmission, fixed subframes for uplink transmission, and subframes that are flexibly allocated for uplink or downlink transmission.
- the time period is a radio frame, where subframe #0 and subframe #5 are fixed downlink subframes, subframe #2 and frame #7 are fixed uplink subframes, and subframe #1 and subframe #6 are special subframes.
- Frames (which can also be classified as fixed downlink subframes), other subframes (subframe #3, subframe #4, subframe #8, subframe #9) are flexible A subframe allocated for uplink or downlink transmission.
- the base station can be dynamically configured according to real-time service requirements and channel conditions to adapt to dynamic changes in service requirements.
- a method of dynamically configuring a TDD subframe is given in the existing disclosed scheme.
- the cross-slots of neighboring cells may be disturbed.
- the L-UE in FIG. 3 is attributed to low.
- the neighboring cells herein may be geographically adjacent cells using the same TDD carrier as shown in FIG. 3, or geographically overlapping or adjacent using adjacent TDD carriers as shown in FIG. 4. Community.
- the cell here may be a cell deployed in the same layer (for example, a macro cell), or may be a layered cell (for example, a macro cell, a cell, a cell under the home base station, etc.). Therefore, although the scheme of dynamically configuring the TDD subframe is given in the prior art, the cross-slot interference problem caused by the problem is not solved, thereby causing a decline in system performance. Summary of the invention
- Embodiments of the present invention provide a feedback and interference control method and apparatus for interference information, which are used to reduce cross interference of a system.
- a method for feeding back interference information comprising:
- the transmission node device acquires the interference measurement configuration information, performs cross-interference measurement according to the acquired interference measurement configuration information, and obtains cross-interference information;
- the transmission node device transmits the cross-interference information to other transmission node devices or central node devices.
- a disturbance control method comprising:
- the transmission node device receives cross-interference information sent by other transmission node devices;
- the transmission node device performs power control or adjusts the uplink and downlink configuration according to the cross-interference information to reduce the cross-interference strength of the transmission node device to other transmission node devices.
- a disturbance control method comprising:
- the central node device receives cross-interference information sent by the transmission node device;
- the central node device instructs one or more transmission node devices to perform power control or adjust an uplink and downlink configuration according to the cross-interference information to reduce cross-interference strength between the transmission node devices.
- a transmission node device comprising:
- An obtaining unit configured to obtain interference measurement configuration information
- a measuring unit configured to perform cross-interference measurement according to the obtained interference measurement configuration information, to obtain cross-chat interference information
- a sending unit configured to send the cross-interference information to another transmission node device or a central node device.
- a transmission node device comprising: a receiving unit, configured to receive cross-interference information sent by another transmission node device;
- the interference control unit is configured to perform power control or adjust an uplink and downlink configuration according to the cross-interference information to reduce cross-interference strength of the transmission node device to other transmission node devices.
- a central node device comprising:
- a receiving unit configured to receive cross-interference information sent by the transmission node device
- a interference control unit configured to instruct one or more transmission node devices to perform power control or adjust an uplink and downlink configuration according to the cross-interference information to reduce cross-interference strength between the transmission node devices.
- the transmission node device acquires the interference measurement configuration information, performs cross-interference measurement according to the acquired interference measurement configuration information, obtains cross-interference information, and transmits the cross-interference information to other transmissions.
- the node device or the central node device can be seen that the solution enables the transmission node device to transmit the cross-interference information to other transmission node devices or central node devices that perform cross-interference control, thereby enabling other transmission node devices or central node devices to be used.
- Cross-interference information is used for cross-interference control to reduce cross-interference.
- the transmitting node device receives the cross-interference information sent by the other transmitting node device, performs power control according to the received cross-interference information, or adjusts the uplink and downlink configuration to reduce the pair of the transmitting node device.
- Cross-interference strength of other transmission node devices It can be seen that the scheme realizes that the transmission node device performs cross-interference control according to the cross-interference information sent by other transmission node devices, thereby achieving the purpose of reducing cross-interference.
- the central node device receives the cross-interference information sent by the transmission node device, performs power control according to the received cross-interference information, or adjusts the uplink and downlink configuration to reduce the crossover between the transmission node devices. Disturbance intensity. It can be seen that the solution realizes the cross-interference control of the central node device according to the cross-interference information sent by the transmission node device, thereby achieving the purpose of reducing cross-interference.
- FIG. 1 is a schematic diagram of a time-frequency relationship of a basic duplex mode in the background art
- FIG. 2 is a schematic diagram of a frame structure of a TD-LTE system in the background art
- FIG. 3 is a schematic diagram of a TDD cross-slot interference in the background art
- FIG. 4 is a schematic diagram of an uplink and downlink configuration in which TDD adjacent carriers are set differently in the background art
- FIG. 5 is a schematic flowchart of a method according to an embodiment of the present disclosure.
- FIG. 6 is a schematic flowchart of another method according to an embodiment of the present disclosure.
- FIG. 7 is a schematic flowchart of still another method according to an embodiment of the present disclosure.
- FIG. 8a is a schematic flowchart of Embodiment 1 of the present invention.
- 8b is a schematic flowchart of Embodiment 2 of the present invention
- 8c is a schematic flowchart of Embodiment 3 of the present invention
- Embodiment 5 of the present invention is a schematic flowchart of Embodiment 5 of the present invention.
- FIG. 9 is a schematic structural diagram of a device according to an embodiment of the present invention.
- FIG. 10 is a schematic structural diagram of another device according to an embodiment of the present disclosure.
- FIG. 11 is a schematic structural diagram of a transmission node device according to an embodiment of the present disclosure.
- FIG. 12 is a schematic structural diagram of another transmission node apparatus according to an embodiment of the present disclosure.
- FIG. 13 is a schematic structural diagram of a central node device according to an embodiment of the present invention. detailed description
- the embodiment of the present invention provides a interference. Information feedback method.
- the method for feeding back the interference information provided by the embodiment of the present invention includes the following steps:
- Step 50 The transmission node device obtains the interference measurement configuration information, performs crossover interference measurement according to the acquired interference measurement configuration information, and obtains cross interference information.
- the cross-interference information may include information of signal interference from other transmission nodes that the transmission node apparatus receives in the uplink transmission direction, that is, interference information of the uplink signals of other transmission node apparatuses to the uplink signals of the transmission node apparatus.
- the information of the signal interference from the other transmission nodes received by the transmission node device in the downlink transmission direction that is, the interference information of the uplink signals of the other transmission node devices to the downlink signals of the present transmission node device may also be used.
- the transmitting node may include a base station, a relay node, and a base station including a macro base station, a micro base station, a pico base station, or a femto base station (Femto), and the like. It is possible to use a TDD mode wireless access point (AP).
- AP TDD mode wireless access point
- the transmission node device transmits the cross-church information to the other transmission node device or the central node device.
- the central node may be a transport node configured to manage a plurality of transport node TDD time slot allocation functions, preferably a macro base station (Macro), and in some cases, may be configured to have multiple transport node TDDs.
- the time slot assigns other entities in the functional network, such as the Mobility Management Entity (MME), the OAM (Operation and Maintenance) function, or an independently configured TDD time slot allocation for managing multiple transport nodes. entity.
- MME Mobility Management Entity
- OAM Operaation and Maintenance
- the interference measurement configuration information acquired by the transmission node device includes at least measurement pilot configuration information.
- Pass The transmission node device obtains the interference measurement configuration information, and specifically adopts one of the following four methods:
- Method 1 The transmitting node device obtains the cell identifier from the neighbor cell list, and determines the measurement pilot configuration information corresponding to the acquired cell identifier according to the binding relationship between the preset cell identifier and the measurement pilot configuration information, and the determined measurement is performed. Pilot configuration information as interference measurement configuration information;
- Method 2 The transmitting node device receives the measurement pilot configuration information sent by the central node device, and uses the received measurement pilot configuration information as the interference measurement configuration information.
- the measurement pilot configuration information sent by the central node device may include each in the system.
- Method 3 The transmitting node device receives the measurement pilot configuration information sent by the central node device and the information of the transmission node device corresponding to the measurement pilot configuration information, and the received measurement pilot configuration information and the measurement pilot configuration information corresponding to the transmission node device Information as the interference measurement configuration information;
- Method 4 The transmission node device obtains measurement pilot configuration information corresponding to other transmission node devices by interacting with other transmission node devices, and uses the obtained measurement pilot configuration information as the interference measurement configuration information.
- the measurement pilot configuration information corresponding to one transmission node device refers to the configuration information of the pilot sequence transmitted by the transmission node device.
- the transmitting node device performs cross-interference measurement according to the acquired interference measurement configuration information, and obtains cross-interference information. Specifically, the transmission node device indicates, according to the measurement pilot configuration information in the measurement interference measurement configuration information. On the resource, the signal strength of the pilot sequence transmitted through the resource is measured, and cross interference information is obtained according to the measurement result.
- Cross-interference information can be:
- Carry 01 (load indication) information with cross-interference intensity information which can directly use existing IE
- Information Element information element
- RSRP Reference Signal Received Power
- Coupling loss information is a measurement value based on RSRP conversion, avoiding the increase of new measurement quantity, thereby avoiding the complexity of the device, and directly characterizing the potential interference between the transmission node devices. The impact of transmission power). This measurement is particularly suitable for scenarios where the transmission node device has large interaction delays or infrequent interactions.
- the method for obtaining the 01 information carrying the cross-interference intensity information according to the measurement result is: The signal strength value of the pilot sequence is compared with a preset threshold value, and the strength of the cross-interference intensity is determined according to the comparison result, and the determination result is carried as the cross-interference intensity information in the existing 01 information.
- the cross-interference strength is determined to be weak; for example, if the measured pilot sequence is If the signal strength value is greater than the preset first threshold, the crossover interference strength is determined to be strong, and if the measured pilot sequence signal strength value is less than the preset first threshold value, and greater than the preset second threshold
- the threshold value is determined to be medium. If the measured signal strength of the pilot sequence is less than the preset second threshold, the crossover interference strength is determined to be weak, and the first threshold is greater than Second threshold.
- the preset threshold value may be determined by the transmission node device itself, or may be configured by the central node device. At the same time, when the transmission node device determines the threshold value by itself, the transmission node device can transmit the threshold value to other transmission node devices or to the central node device.
- the information bits reserved in the existing 01 information may be used to carry the cross-interference intensity information, or may be existing. New information bits are added to the 01 information, and the new information bits are used to carry the cross-interference strength information.
- the specific method can be found in Table 3 below.
- the specific method can be found in the following table. 4 and Table 5.
- Upstream interference load refers to (required) interference, corresponding to PRB 0, shows) low the second to PRB 1, interference, etc.
- Table 3 multiplexes the existing enumeration format and expands on the existing IE format to avoid new signaling overhead.
- BS-BS interference can be indicated, which is beneficial to the control of crossover interference.
- Each position of the bit map represents a PRB.1 representation of strong interference, and 0 represents weak interference.
- An optional IE, BS-BS interference overhead indication, is added to Table 4 and Table 5 to carry crossover interference strength information.
- the method is based on the existing IE scalable features and has good compatibility.
- the two types of IEs in Tables 4 and 5 each have advantages.
- the enumeration (ENUMERATED) type in Table 4 makes the feedback accurate and facilitates the support of more complex interference control schemes.
- the bit (BIT) signaling in Table 5 The overhead is small, and it is applicable to scenarios where the interaction is frequent or the signaling resources are limited.
- the method for obtaining the information indicating the cross-interference intensity according to the measurement result is: comparing the measured signal strength value of the pilot sequence with a preset threshold value, determining the strength of the cross-interference intensity according to the comparison result, and determining the result As information indicating the crosstalk intensity.
- the cross-interference strength is determined to be weak; for example, if the measured pilot sequence is If the signal strength value is greater than the preset first threshold, the crossover interference strength is determined to be strong, and if the measured pilot sequence signal strength value is less than the preset first threshold value, and greater than the preset second threshold
- the threshold value is determined to be medium. If the measured signal strength of the pilot sequence is less than the preset second threshold, the crossover interference strength is determined to be weak, and the first threshold is greater than Second threshold.
- the preset threshold value may be determined by the transmission node device itself, or may be configured by the central node device. At the same time, when the transmission node device determines the threshold itself, the transmission node device can transmit the threshold value to other transmission node devices or to the central node device.
- the information indicating the crosstalk intensity can be as shown in Table 6 or Table 7 below.
- the method for obtaining the RSRP according to the measurement result is as follows: The signal strength value of the measured pilot sequence is directly used as the RSRP.
- the RSRP information is similar to the definition in the prior art except that the measured pilot sequence is no longer limited to the downlink common pilot.
- the pilot sequence may be a certain type of pilot configured (such as a CSI-RS (channel state information reference signal), or a modified CRS (Cell-specific reference signals). ).
- the modified CRS may be a downlink common pilot transmitted only in a limited subframe (for example, a fixed downlink subframe);
- the pilot sequence may be bound to the cell identity or may be configured by the transport node device or the central node device.
- RSRP is not necessarily based on downlink common pilot measurements, but can also be derived based on configured measurement pilots. This solution expands the RSRP measurement pilot and is suitable for more scenarios.
- Coupling loss EPRE of the measured pilot sequence (power on each resource element) -RSRP.
- step 51 when the transmission node device transmits the cross-interference information to the other transmission node device, the cross-interference information needs to be sent to the transmission node device corresponding to the measurement pilot configuration information used to obtain the cross-interference information, so that The transmission node device that receives the cross-interference information can perform the interference control more specifically.
- the specific description is as follows: When the transmission node device uses the method 1 to obtain the interference measurement configuration information, the transmission node device transmits the cross-interference information to other transmission node devices, and the specific implementation may be as follows:
- the transmitting node device transmits the cross-chat information to the transport node device to which the cell corresponding to the acquired cell identifier belongs.
- the transmission node device uses the method 2 to obtain the interference measurement configuration information, the transmission node device transmits the cross-interference information to the other transmission node devices, and the specific implementation may be as follows:
- the transmission node device determines the transmission node device corresponding to the received measurement pilot configuration information according to the correspondence between the preset measurement pilot configuration information and the transmission node device, and transmits the cross-interference information to the determined transmission node device.
- the transmission node device When the transmission node device obtains the interference measurement configuration information by using the third method, the transmission node device transmits the cross-interference information to the other transmission node devices, and the specific implementation may be as follows:
- the transmitting node device transmits the cross-chat information to the transmitting node device corresponding to the received measurement pilot configuration information.
- the transmission node device uses the method 4 to obtain the interference measurement configuration information, the transmission node device transmits the cross-interference information to other transmission node devices, and the specific implementation may be as follows:
- the transmitting node device transmits the cross-chat information to the other transmitting node devices corresponding to the obtained measurement pilot configuration information.
- step 51 when the transmission node device transmits the cross-interference information to the central node device, the central node device needs to be able to obtain the measurement pilot configuration information or the transmission node device corresponding to the received cross-interference information.
- the central node device enables more targeted interference control. details as follows:
- the transmission node device uses the method 1 to obtain the interference measurement configuration information, the transmission node device sends the cross-interference information to the central node device, and the specific implementation may be as follows:
- the transmitting node device sends the identifier of the cross-chat information and its corresponding measurement pilot configuration information to the central node device; the measurement pilot configuration information corresponding to the cross-interference information refers to the measurement pilot used to obtain the cross-chat information.
- Configuration information or,
- the transmission node device transmits the cross-interference information and the information of the transmission node device to which the cell corresponding to the acquired cell identifier belongs to the central node device.
- the transmission node device uses the method 2 to obtain the interference measurement configuration information, the transmission node device sends the cross-interference information to the central node device, and the specific implementation may be as follows:
- the transmitting node device sequentially transmits the cross-chat information measured according to each measurement pilot configuration information to the central node device according to the receiving order of each measurement pilot configuration information;
- the transmitting node device transmits the cross-interference information and the identifier of the received measurement pilot configuration information to the central node device;
- the transmission node device determines, according to the correspondence between the preset measurement pilot configuration information and the transmission node device, the transmission node device corresponding to the received measurement pilot configuration information, and transmits the cross interference information and the information of the determined transmission node device to Central node device.
- the transmission node device When the transmission node device obtains the interference measurement configuration information by using the third method, the transmission node device sends the cross interference information to the central node device, and the specific implementation may be as follows:
- the transmitting node device sequentially transmits the cross-chat information measured according to each measurement pilot configuration information to the central node device according to the receiving order of each measurement pilot configuration information;
- the transmitting node device transmits the cross-interference information and the identifier of the received measurement pilot configuration information to the central node device;
- the transmission node device transmits the information of the transmission node device corresponding to the cross interference information and the received measurement pilot configuration information to the central node device.
- the transmission node device uses the method 4 to obtain the interference measurement configuration information, the transmission node device transmits the cross-interference information to the central node device, and the specific implementation may be as follows:
- the transmission node device transmits the cross-interference information and the obtained identifier of the measurement pilot configuration information to the central node device;
- the transmission node device transmits the cross interference information and the information of the other transmission node devices transmitting the obtained measurement pilot configuration information to the central node device.
- step 51 when the transmission node device transmits the cross-interference information to the other transmission node device, the cross-interference information of the upper node needs to correspond to the transmission node device, that is, the cross-interference information is sent to obtain the cross-interference information.
- the transmission node device corresponding to the measurement pilot configuration information used is as shown in Fig. 8a.
- the conditions used in this manner are: The transmitting node device needs to know the correspondence between the measured pilot configuration information and the transmitting node device. Such a correspondence may be implicitly obtained, for example, by binding measurement configuration information (such as a pilot sequence and an identification of a transmission node device) in advance. also may The correspondence node is notified to the transmission node device by the central node device, or the transmission node device interacts to obtain the measurement pilot configuration information of the other party.
- step 51 the transmission node device sends the cross-interference information and the identifier of the measurement pilot configuration information to the central node device.
- the transmission node device crosses the interference information and the transmission node. The device information is sent to the central node device.
- the transmission node device only needs to establish a correspondence between the measurement pilot configuration information and the cross-chat information.
- the list of measurement pilot configuration information may be notified to each of the transmission node devices by the central node device.
- the transport node device needs to establish a correspondence between the transport node device and the cross-crambling information.
- This correspondence can be obtained by measuring the correspondence between the pilot configuration information and the transmission node device.
- the correspondence between the measurement pilot configuration information and the transmission node device can be directly configured by the central node device or can be obtained by interaction between the transmission node devices.
- the interface may be one of the following two interfaces, but is not limited to the following two interfaces: an X2 interface and an air interface.
- the triggering report may be one of the following three types, but is not limited to the following three types: initial access reporting; periodic reporting; event triggering reporting.
- the description of the implicit acquisition of the measurement pilot configuration information by the transmission node device is as follows: When the cross-interference measurement is based on the downlink common pilot, since the downlink common pilot is bound to the cell identifier (cell_ID), the transmission node device can directly The measurement result corresponds to the transmission node device.
- the measurement pilot configuration information includes: sequence information, configuration information, period information, and start subframe information; wherein, the sequence information indicates the measured pilot sequence; and the configuration information indicates that the measurement is in a PRB (physical resource block) RE (Resource Unit) position; Period information indicates the measured time period; The start subframe information indicates the subframe in which the measurement starts.
- PRB physical resource block
- RE Resource Unit
- the measurement pilot configuration information may further include: one or any one of antenna port information, transmission power information, frequency point, and bandwidth information; wherein, the antenna port information indicates an antenna port where the pilot sequence is located; Indicates the transmit power of the pilot sequence; the frequency and bandwidth at which the frequency and bandwidth information is measured.
- Sequence information usually the construction of the sequence is determined by the protocol, so the sequence information usually refers to the initialization information of the sequence.
- the sequence information usually refers to the initialization information of the sequence.
- CSI-RS channel-state-information reference signal
- the configuration information refers to the position of the pilot sequence to be measured within the subframe, which is also known as the pilot pattern.
- the CSI-RS has up to 32 pilot patterns to choose from (TDD system), which need to be explicitly notified to the transmitting node which specific pilot pattern to use for crosstalk measurement.
- the CRS pilot pattern is determined, only different cells
- the Period and Start Subframe information indicates in which subframes the pilot sequence to be measured is transmitted.
- the CSI-RS has a combination of 155 different periods and starting subframes, which need to be explicitly notified to the transmitting node device in which subframes can be cross-interference measurements.
- CRS is sent every subframe, or only in a specific subframe. This rule has been agreed in the protocol, so the transmitting node device only needs to refer to the protocol agreement to know in which subframe the measurement pilot is transmitted, without signaling.
- Antenna Port Different antenna ports in the same set of pilot configurations may be sent by one transmitting node or by different transmitting nodes. For scenarios where different antenna ports are sent by one transit node, the scenario can use CSI-RS or CRS. This scenario does not need to notify specific antenna port information. For scenarios where different antenna ports are sent by different transport nodes, this scenario generally uses CSI-RS. In this scenario, different antenna ports need to be distinguished, and even the correspondence between different antenna ports and transmission nodes should be clarified.
- Transmit Power generally refers to the transmit power of the measurement pilot on each resource element. This information is usually notified in scenarios where pathloss, or coupling loss is required. This information is notified in an explicit manner.
- the interface for explicit notification can be an X2 interface or an air interface or something else.
- Explicit notifications can be either initial access notifications or periodic notifications or event-triggered notifications.
- the embodiment of the present invention provides a interference control method.
- a method for controlling a disturbance includes the following steps:
- Step 60 The transmission node device receives cross-interference information sent by other transmission node devices.
- Step 61 The transmission node device performs power control or adjusts the uplink and downlink configuration according to the cross-interference information to reduce the cross-interference strength of the transmission node device to other transmission node devices. Specifically, if the transmission node device that receives the cross-interference information determines that the interference to the transmission node device that transmits the cross-interference information is large according to the cross-interference information, the subframe/time when the interference is large is reduced. The signal transmission power of the slot, or adjust its own uplink and downlink configuration, so that the transmission node device receiving the cross-interference information is in the signal transmission direction of the subframe/slot with large interference, and the cross-interference is transmitted.
- the transmission node device of the information has the same signal transmission direction in the subframe/slot; for example, the transmission node device A uses the uplink and downlink subframe configuration 1 in Table 2, and the transmission node device B uses the uplink and downlink sub-tables in Table 2.
- Frame configuration 3 after receiving the cross-interference information from the transmission node device B, the transmission node device A determines that the downlink transmission of the subframe 4 in the uplink transmission of the transmission node device B in the subframe 4 is based on the cross-interference information.
- the transmission node device A can adjust its uplink and downlink configuration to the uplink and downlink subframe configuration 3, so that its own subframe 4 and the subframe 4 of the transmission node device B are in the same direction subframe, avoiding the crossover Disturb.
- the transmission node device transmits its corresponding measurement pilot configuration information to the other transmission node device.
- another embodiment of the present invention provides a method for controlling the interference.
- a method for controlling a disturbance includes the following steps:
- Step 70 The central node device receives cross-interference information sent by the transmission node device.
- Step 71 The central node device instructs one or more transmission node devices to perform power control or adjust uplink and downlink configurations according to cross-interference information to reduce cross-interference strength between the transmission node devices. Specifically, the central node device determines, according to the received cross-interference information, a transmission node device that generates a large interference to other transmission node devices, and then instructs the determined transmission node device to reduce the signal in the subframe/time slot with greater interference.
- the transmission node device A uses the uplink and downlink subframe configuration 1 in Table 2
- the transmission node device B uses the uplink and downlink subframe configuration 3 in Table 2
- the central node device receives the After the cross-interference information of the node device B is transmitted, it is judged that the downlink transmission of the transmission node device A in the subframe 4 causes a large interference to the uplink transmission of the transmission node device B in the subframe 4 according to the cross-interference information
- the central node device Instructing the transmitting node device A to adjust the uplink and downlink configuration to the uplink and downlink subframe configuration 3 such that the subframe 4 of the transmitting node device A and the transmitting node B sub-frame
- the central node device may determine, according to the measurement pilot configuration information or the transmission node device corresponding to the cross interference information, which received cross-talk information is the interference information of the transmission node device transmitting the cross-interference information. For example, the central node device receives cross-interference information sent by the transmission node device 1, and the cross-interference information corresponds to the measurement pilot configuration 1, and the measurement pilot configuration 1 corresponds to the transmission node device 2, and the cross-interference information is transmitted.
- the interference information sent by the node device 2 to the transmission node device 1 for example, the central node device receives the cross-interference information sent by the transmission node device 1, and the cross-interference information corresponds to the transmission node device 2, and the cross-interference information It is the interference information of the transmission node device 2 to the transmission node device 1.
- the central node device receives the cross-interference information sent by the transmission node device, the central node device The interference measurement configuration information is sent to the transmission node device.
- the interference measurement configuration information includes measurement pilot configuration information of the transmission node device; or, the interference measurement configuration information includes information of the measurement pilot configuration information and the transmission node device corresponding to the measurement pilot configuration information.
- the central node device notifies each of the transmission nodes of the identification of the measurement pilot configuration information. As shown in Fig. 8e, the central node device notifies each of the transmission node devices of the identification of the measurement pilot configuration information and the identification of the corresponding transmission node device, respectively.
- the transmission node devices exchange respective measurement pilot configuration information, and the transmission node device can establish the corresponding relationship between the transmission node device and the measurement pilot configuration information.
- an embodiment of the present invention provides a transmission node device, where the device includes:
- the obtaining unit 90 is configured to obtain the interference measurement configuration information.
- the measuring unit 91 is configured to perform cross-interference measurement according to the acquired interference measurement configuration information to obtain cross-interference information;
- the sending unit 92 is configured to send the cross-chat information to the other transmitting node device or the central node device.
- the obtaining unit 90 is configured to: obtain the interference measurement configuration information according to one of the following methods: Method 1: Obtain a cell identifier from the neighbor cell list, according to a binding relationship between the preset cell identifier and the measurement pilot configuration information. Determining measurement pilot configuration information corresponding to the acquired cell identifier, and using the determined measurement pilot configuration information as the interference measurement configuration information;
- Method 2 Receive measurement pilot configuration information sent by the central node device, and use the received measurement pilot configuration information as the interference measurement configuration information;
- Method 3 receiving measurement pilot configuration information sent by the central node device and information of the transmission node device corresponding to the measurement pilot configuration information, and using the received measurement pilot configuration information and the information of the transmission node device corresponding to the measurement pilot configuration information as Causing measurement configuration information;
- Method 4 Obtain measurement pilot configuration information corresponding to other transmission node devices by interacting with other transmission node devices, and use the obtained measurement pilot configuration information as the interference measurement configuration information.
- the sending unit 92 is configured to: send the cross-chat information to the other transmitting node device as follows:
- the cross-interference information is sent to the transmission node device to which the cell corresponding to the acquired cell identifier belongs;
- the transmission node device corresponding to the received measurement pilot configuration information is determined according to the corresponding relationship between the preset measurement pilot configuration information and the transmission node device, and the crossover interference is determined. Information is sent to the determined transport node device; or, When the method 3 is used to obtain the interference measurement configuration information, the cross-interference information is sent to the transmission node device corresponding to the received measurement pilot configuration information; or
- the cross-interference information is transmitted to the other transmission node devices corresponding to the obtained measurement pilot configuration information.
- the sending unit 92 is configured to: when the method 1 is used to obtain the interference measurement configuration information, send the cross-chat information to the central node device according to the following method:
- the sending unit 92 is configured to: when using the method 2 to obtain the interference measurement configuration information, send the cross-interference information to the central node device according to the following method:
- the transmission node device transmits the cross-interference information and the information of the determined transmission node device to the central node device.
- the sending unit 92 is configured to: when the method 3 is used to obtain the interference measurement configuration information, send the cross-interference information to the central node device according to the following method:
- the sending unit 92 is configured to: when the method 4 is used to obtain the interference measurement configuration information, send the cross-interference information to the central node device according to the following method:
- the cross-interference information and the obtained identification of the measurement pilot configuration information are transmitted to the central node device; or the cross-interference information and the information of the other transmission node device transmitting the obtained measurement pilot configuration information are transmitted to the central node device.
- cross-interference information is:
- Load indication 01 information carrying cross-interference intensity information, or Information indicating the intensity of the crossover, or
- the measurement pilot configuration information includes: sequence information, configuration information, period information, and start subframe information; the sequence information indicates the measured pilot sequence; and the configuration information indicates the resource unit RE in one physical resource block PRB during measurement. Position; the period information indicates the time period of the measurement; the start subframe information indicates the subframe in which the measurement starts.
- the measurement pilot configuration information further includes: one or more of antenna port information, transmission power information, frequency point, and bandwidth information;
- the antenna port information indicates the antenna port where the pilot sequence is located; the transmit power information indicates the transmit power of the pilot sequence; the frequency and bandwidth at which the frequency and bandwidth information are measured.
- an embodiment of the present invention provides a transmission node apparatus, where the apparatus includes:
- the receiving unit 101 is configured to receive cross-interference information sent by other transmission node devices;
- the interference control unit 102 is configured to perform power control or adjust an uplink and downlink configuration according to the cross-interference information to reduce the cross-interference strength of the transmission node device to other transmission node devices.
- the device further includes:
- the sending unit 103 is configured to send the corresponding measurement pilot configuration information to the other transmission node device before receiving the cross-interference information sent by the other transmission node device.
- an embodiment of the present invention provides a central node device, where the device includes:
- the receiving unit 101 is configured to receive cross-interference information sent by the transmission node device.
- the interference control unit 102 is configured to instruct one or more transmission node devices to perform power control or adjust an uplink and downlink configuration according to the cross-interference information to reduce cross-interference strength between the transmission node devices.
- the device further includes:
- the sending unit 103 is configured to send the interference measurement configuration information to the transmission node device before receiving the cross-interference information sent by the transmission node device.
- the interference measurement configuration information includes measuring pilot configuration information
- the interference measurement configuration information includes information of the measurement pilot configuration information and the transmission node device corresponding to the measurement pilot configuration information.
- a transmission node apparatus includes: a first processor 111 and a first transmitter 112.
- the first processor 111 is configured to acquire the interference measurement configuration information, perform cross-interference measurement according to the acquired interference measurement configuration information, and obtain cross-interference information;
- the first transmitter 112 is configured to send cross-interference information to other transmission node devices or central node devices.
- the first processor 111 is configured to: obtain the interference measurement configuration information according to one of the following methods: Method 1: Obtain a cell identifier from the neighbor cell list, according to the preset cell identifier and the measurement pilot configuration information. Binding relationship, determining measurement pilot configuration information corresponding to the acquired cell identifier, and using the determined measurement pilot configuration information as the interference measurement configuration information;
- Method 2 Receive measurement pilot configuration information sent by the central node device, and use the received measurement pilot configuration information as the interference measurement configuration information;
- Method 3 receiving measurement pilot configuration information sent by the central node device and information of the transmission node device corresponding to the measurement pilot configuration information, and using the received measurement pilot configuration information and the information of the transmission node device corresponding to the measurement pilot configuration information as Causing measurement configuration information;
- Method 4 Obtain measurement pilot configuration information corresponding to other transmission node devices by interacting with other transmission node devices, and use the obtained measurement pilot configuration information as the interference measurement configuration information.
- the first transmitter 112 is configured to: send the cross-crambling information to the other transmission node device as follows:
- the cross-interference information is sent to the transmission node device to which the cell corresponding to the acquired cell identifier belongs;
- the transmission node device corresponding to the received measurement pilot configuration information is determined according to the corresponding relationship between the preset measurement pilot configuration information and the transmission node device, and the crossover interference is determined.
- Information is sent to the determined transport node device; or,
- the cross-interference information is sent to the transmission node device corresponding to the received measurement pilot configuration information;
- the cross-interference information is transmitted to the other transmission node devices corresponding to the obtained measurement pilot configuration information.
- the first transmitter 112 is configured to:
- the cross-interference information is sent to the central node device as follows:
- the cross-interference information is sent to the central node device as follows: And transmitting, according to the receiving sequence of each measurement pilot configuration information, cross-interference information measured according to each measurement pilot configuration information to the central node device; or, the identifier of the cross-chat interference information and the received measurement pilot configuration information Sending to the central node device; or, according to the correspondence between the preset measurement pilot configuration information and the transmission node device, determining the transmission node device corresponding to the received measurement pilot configuration information, and the cross-interference information and the determined transmission node The information of the device is sent to the central node device;
- the cross-interference information is sent to the central node device as follows:
- the cross-interference information and the obtained identification of the measurement pilot configuration information are transmitted to the central node device; or the cross-interference information and the information of the other transmission node devices transmitting the obtained measurement pilot configuration information are transmitted to the central node device.
- the cross-interference information is:
- the measurement pilot configuration information includes: sequence information, configuration information, period information, and start subframe information; the sequence information indicates the measured pilot sequence; and the configuration information indicates the resource unit in one physical resource block PRB during measurement. RE position; The period information indicates the measured time period; the start subframe information indicates the subframe in which the measurement starts.
- the measurement pilot configuration information further includes: one or more of antenna port information, transmission power information, frequency point and bandwidth information;
- the antenna port information indicates the antenna port where the pilot sequence is located; the transmit power information indicates the transmit power of the pilot sequence; the frequency and bandwidth at which the frequency and bandwidth information are measured.
- another transmission node apparatus provided by an embodiment of the present invention includes: a first receiver 121 and a second processor 122.
- the second processor 122 is configured to perform power control or adjust an uplink and downlink configuration according to cross-interference information to reduce cross-interference strength of the transmission node device to other transmission node devices.
- the apparatus further comprises: a second transmitter 123.
- the second transmitter 123 is configured to send the corresponding measurement pilot configuration information to the other transmission node device before receiving the cross-interference information sent by the other transmission node device.
- the central node apparatus provided by the embodiment of the present invention includes: a second receiver 131 and a third processor 132.
- a second receiver 131 configured to receive cross-interference information sent by the transmission node device
- the third processor 132 is configured to instruct one or more transmission node devices to perform power control or adjust an uplink and downlink configuration according to the cross-interference information to reduce cross-interference strength between the transmission node devices.
- the apparatus further comprises: a third transmitter 133.
- the third transmitter 133 is configured to send the interference measurement configuration information to the transmission node device before receiving the cross-interference information sent by the transmission node device.
- the interference measurement configuration information includes measurement pilot configuration information; or
- the interference measurement configuration information includes information of the measurement pilot configuration information and the transmission node device corresponding to the measurement pilot configuration information.
- the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
- the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
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Abstract
本申请实施例公开了一种干扰信息的反馈及干扰控制方法和装置,涉及无线通信技术领域,用于降低系统的交叉干扰。本申请中,传输节点装置获取干扰测量配置信息,根据获取的干扰测量配置信息进行交叉干扰测量,得到交叉干扰信息,将交叉干扰信息发送给其他传输节点装置或中心节点装置,其他传输节点装置或中心节点装置根据交叉干扰信息进行干扰控制,以达到降低交叉干扰的目的。
Description
千扰信息的反馈及千扰控制方法和装置
本申请要求在 2012年 6月 20日提交中国专利局、 申请号为 201210211736.4、 发明名 称为"千扰信息的反馈及千扰控制方法和装置"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
本发明涉及无线通信领域, 尤其涉及一种千扰信息的反馈及千扰控制方法和装置。 背景技术
对于蜂窝系统釆用的基本的双工方式来说: TDD ( Time division duplex, 时分双工) 模式是指上下行链路使用同一个工作频带, 在不同的时间间隔上进行上下行信号的传输, 上下行之间有 GP (Guard Period, 保护间隔); FDD ( Frequency Division Duplex, 频分双 工)模式则指上下行链路使用不同的工作频带, 可以在同一个时刻在不同的频率载波上进 行上下行信号的传输, 上下行之间有保护带宽(Guard Band), 如图 1所示, 图 1中 T表示 发送, R表示接收。
LTE ( Long Term Evolution, 长期演进) TDD系统的帧结构稍复杂一些, 如图 2所示, 一个无线帧长度为 10ms, 包含特殊子帧和常规子帧两类共 10个子帧, 每个子帧为 lms。 特殊子帧分为 3个时隙: DwPTS (下行特殊时隙)、 GP和 UpPTS (上行特殊时隙)。 常规 子帧包括上行子帧和下行子帧, 用于传输上行 /下行控制信令和业务数据等。 其中, 在一个 无线帧中, 可以配置两个特殊子帧 (分别位于子帧 #1和子帧 #6), 也可以配置一个特殊子帧 (位于子帧 #1)。 子帧 #0和子帧 #5以及特殊子帧中的 DwPTS总是用作下行传输, 子帧 #2以 及特殊子帧中的 UpPTS总是用于上行传输,其他子帧可以依据需要配置为用作上行传输或 者下行传输。
在 TD-LTE (时分长期演进) 系统中, 特殊子帧中的 DwPTS、 GP和 UpPTS三个时隙 的总和为 lms, 三个时隙长度划分支持不同的配置情况, 如表 1所示, 表中时间长度单位 为 Ts, =1/(15000x2048)秒。 配置 短 CP 扩展 CP
序号 DwPTS GP UpPTS DwPTS GP UpPTS
0 6592-7; 21936-7; 2192-7; 7680-7; 20480-7; 2560-7;
1 19760-7; 8768-7; 20480-7; 7680-7;
2 21952-7; 6576-7; 23040-7; 5120-7;
3 24144-7; 4384-7; 25600-7; 2560-7;
4 26336-7; 2192-7; 7680-7; 17920-7; 5120-7;
5 6592-7; 19744-7; 4384-7; 20480-7; 5120-7;
6 19760-7; 6576-7; 23040-7; 2560-7;
7 21952-7; 4384-7; - - -
8 24144-7; 2192-7; - - - 表 1
TD-LTE系统中上下行子帧分配支持 7种不同的方式,具体配置参数如下表 2所示, D 表示用作下行传输, U表示用作上行传输, S表示该子帧是特殊子帧, 包含 DwPTS、 GP 和 UpPTS三部分。
表 2
上述特殊子帧配置和上下行子帧分配方式通过 SI (System Information, 系统信息)广播 给小区内的所有用户。
由如上述描述可知, TD-LTE系统中支持通过系统信息变更 (System Information Change) 的方式改变如上两个帧配置参数 , 但这一变更需要通过寻呼和重新读取系统信息等过程 , 且存在变更前后的若千模糊问题, 例如对 HARQ (Hybrid Automatic Repeat reQuest, 混合 自动重传请求)操作和调度等造成不利影响, 如果帧配置变更频繁, 会造成系统性能严重 下降。 并且, TD-LTE 系统中支持的最小帧配置变更周期为 640ms, 还不能完全适应业务 的动态变化需要。
基于此, 提出了一种动态的上下行子帧分配方案, 具体如下:
在一定时间周期内, 设定四种子帧类型, 包括固定用于下行传输的子帧, 固定用于上 行传输的子帧, 以及灵活分配为上行或下行传输的子帧。 该时间周期为一个无线帧, 其中 子帧 #0、 子帧 #5为固定下行子帧, 子帧 #2、 帧 #7为固定上行子帧, 子帧 #1、 子帧 #6为特 殊子帧 (也可以归为固定下行子帧中), 其他子帧 (子帧 #3、 子帧 #4、 子帧 #8、 子帧 #9)为灵活
分配为上行或下行传输的子帧。 对于最后一类子帧, 基站可根据实时的业务需求和信道状 况进行动态配置, 以适应业务需求的动态变化。
综上, 现有公开的方案中给出了动态配置 TDD子帧的方法。 在实际系统中, 不同的 小区如果独立设置了不同的上下行子帧配置, 则会造成相邻小区的交叉时隙千扰, 如图 3 所示, 图 3中的 L-UE为归属于低功率节点的终端。 需要指出的是, 这里的相邻小区可以 是如图 3所示的地理上相邻的使用同样 TDD载波的小区, 或者是如图 4所示的地理上重 叠或相邻的使用相邻 TDD载波的小区。 同时, 这里的小区可以是同层部署的小区 (例如宏 小区), 也可以是分层部署的小区 (例如宏小区、 小区、 家庭基站下的小区等)。 因此, 现 有技术中虽然给出了动态配置 TDD子帧的方案, 但未解决由此带来的交叉时隙千扰问题, 从而造成系统性能的下降。 发明内容
本发明实施例提供一种千扰信息的反馈及千扰控制方法和装置, 用于降低系统的交叉 千扰。
一种千扰信息的反馈方法, 该方法包括:
传输节点装置获取千扰测量配置信息, 根据获取的千扰测量配置信息进行交叉千扰测 量, 得到交叉千扰信息;
传输节点装置将所述交叉千扰信息发送给其他传输节点装置或中心节点装置。
一种千扰控制方法, 该方法包括:
传输节点装置接收其他传输节点装置发送的交叉千扰信息;
传输节点装置根据所述交叉千扰信息进行功率控制或调整上下行配置, 以降低该传输 节点装置对其他传输节点装置的交叉千扰强度。
一种千扰控制方法, 该方法包括:
中心节点装置接收传输节点装置发送的交叉千扰信息;
中心节点装置根据所述交叉千扰信息指示一个或多个传输节点装置进行功率控制或 调整上下行配置, 以降低传输节点装置间的交叉千扰强度。
一种传输节点装置, 该装置包括:
获取单元, 用于获取千扰测量配置信息;
测量单元,用于根据获取的千扰测量配置信息进行交叉千扰测量,得到交叉千扰信息; 发送单元, 用于将所述交叉千扰信息发送给其他传输节点装置或中心节点装置。
一种传输节点装置, 该装置包括:
接收单元, 用于接收其他传输节点装置发送的交叉千扰信息;
千扰控制单元, 用于根据所述交叉千扰信息进行功率控制或调整上下行配置, 以降低 该传输节点装置对其他传输节点装置的交叉千扰强度。
一种中心节点装置, 该装置包括:
接收单元, 用于接收传输节点装置发送的交叉千扰信息;
千扰控制单元, 用于根据所述交叉千扰信息指示一个或多个传输节点装置进行功率控 制或调整上下行配置, 以降低传输节点装置间的交叉千扰强度。
本发明实施例提供的一种方案中, 传输节点装置获取千扰测量配置信息, 根据获取的 千扰测量配置信息进行交叉千扰测量, 得到交叉千扰信息, 将交叉千扰信息发送给其他传 输节点装置或中心节点装置, 可见, 本方案实现了传输节点装置将交叉千扰信息传递给进 行交叉千扰控制的其他传输节点装置或中心节点装置, 从而使其他传输节点装置或中心节 点装置能够使用交叉千扰信息进行交叉千扰控制, 以达到降低交叉千扰的目的。
本发明实施例提供的另一种方案中, 传输节点装置接收其他传输节点装置发送的交叉 千扰信息, 根据接收的交叉千扰信息进行功率控制或调整上下行配置, 以降低该传输节点 装置对其他传输节点装置的交叉千扰强度。 可见, 本方案实现了传输节点装置根据其他传 输节点装置发送的交叉千扰信息进行交叉千扰控制, 进而达到了降低交叉千扰的目的。
本发明实施例提供的又一种方案中, 中心节点装置接收传输节点装置发送的交叉千扰 信息, 根据接收的交叉千扰信息进行功率控制或调整上下行配置, 以降低传输节点装置间 的交叉千扰强度。 可见, 本方案实现了中心节点装置根据传输节点装置发送的交叉千扰信 息进行交叉千扰控制, 进而达到了降低交叉千扰的目的。 附图说明
图 1为背景技术中基本双工方式的时频关系示意图;
图 2为背景技术中 TD-LTE系统帧结构示意图;
图 3为背景技术中 TDD交叉时隙千扰示意图;
图 4为背景技术中 TDD相邻载波设置不同的上下行配置的示意图;
图 5为本发明实施例提供的方法流程示意图;
图 6为本发明实施例提供的另一方法流程示意图;
图 7为本发明实施例提供的又一方法流程示意图;
图 8a为本发明实施例一的流程示意图;
图 8b为本发明实施例二的流程示意图;
图 8c为本发明实施例三的流程示意图;
图 8d为本发明实施例四的流程示意图;
图 8e为本发明实施例五的流程示意图;
图 8f为本发明实施例六的流程示意图;
图 9为本发明实施例提供的装置结构示意图;
图 10为本发明实施例提供的另一装置结构示意图;
图 11为本发明实施例提供的一种传输节点装置结构示意图;
图 12为本发明实施例提供的另一种传输节点装置结构示意图;
图 13为本发明实施例提供的中心节点装置结构示意图。 具体实施方式
为了解决如何将交叉千扰信息传递给进行交叉千扰控制的装置, 从而使该装置能够使 用交叉千扰信息进行交叉千扰控制以降低交叉千扰的问题, 本发明实施例提供一种千扰信 息的反馈方法。
参见图 5 , 本发明实施例提供的千扰信息的反馈方法, 包括以下步骤:
步骤 50: 传输节点装置获取千扰测量配置信息, 根据获取的千扰测量配置信息进行交 叉千扰测量, 得到交叉千扰信息。
这里, 交叉千扰信息可以包括该传输节点装置在上行传输方向受到的来自其他传输节 点的信号千扰的信息, 即其他传输节点装置的下行信号对本传输节点装置的上行信号的千 扰信息。 当然, 也可以该传输节点装置在下行传输方向受到的来自其他传输节点的信号千 扰的信息, 即其他传输节点装置的上行信号对本传输节点装置的下行信号的千扰信息。
传输节点可以包括基站、 中继节点 (Relay ), 其中的基站包括宏基站( Macro )、 微基 站( Micro )、 微微基站(Pico )、 家庭基站或称为毫微微基站(Femto )等, 以及其它可能 的釆用 TDD模式的无线接入点 ( AP )。
步骤 51 : 传输节点装置将交叉千扰信息发送给其他传输节点装置或中心节点装置。 中心节点可以是被配置为具有管理多个传输节点 TDD 时隙分配功能的传输节点, 优 选地可以是宏基站(Macro ), 某些情况下, 也可以是被配置为具有管理多个传输节点 TDD 时隙分配功能网络中的其它实体, 如移动性管理实体(MME )、 起 OAM ( Operations and Maintenance, 操作和维护) 作用的实体, 或者是一个独立设置的管理多个传输节点 TDD 时隙分配的实体。
步骤 50 中, 传输节点装置获取的千扰测量配置信息至少包括测量导频配置信息。 传
输节点装置获取千扰测量配置信息, 具体可以釆用如下四种方法之一:
方法一: 传输节点装置从邻小区列表中获取小区标识, 根据预先设定的小区标识与测 量导频配置信息的绑定关系, 确定获取的小区标识对应的测量导频配置信息, 将确定的测 量导频配置信息作为千扰测量配置信息;
方法二: 传输节点装置接收中心节点装置发送的测量导频配置信息, 将接收的测量导 频配置信息作为千扰测量配置信息; 这里, 中心节点装置发送的测量导频配置信息可以包 括系统中各传输节点装置对应的测量导频配置信息。
方法三: 传输节点装置接收中心节点装置发送的测量导频配置信息及测量导频配置信 息对应的传输节点装置的信息, 将接收的测量导频配置信息及测量导频配置信息对应的传 输节点装置的信息作为千扰测量配置信息;
方法四: 传输节点装置通过与其他传输节点装置交互, 获得其他传输节点装置对应的 测量导频配置信息, 将获得的测量导频配置信息作为千扰测量配置信息。
一个传输节点装置对应的测量导频配置信息是指该传输节点装置发送的导频序列的 相关配置信息。
步骤 50 中, 传输节点装置根据获取的千扰测量配置信息进行交叉千扰测量, 得到交 叉千扰信息, 具体可以是, 传输节点装置在测量千扰测量配置信息中的测量导频配置信息 所指示的资源上, 测量通过该资源传输的导频序列的信号强度, 并根据测量结果得到交叉 千扰信息。
交叉千扰信息可以是:
携带有交叉千扰强度信息的 01 (负载指示)信息, 釆用该方式可以直接釆用现有的 IE
( Information Element, 信息单元), 减少了信令开销并具有良好的兼容性, 避免了标准化 和设备实现的复杂度; 或,
指示交叉千扰强度的信息, 该方式筒单直接; 或
RSRP ( Reference signal received power, 参考信号接收强度)信息, 该方式复用现有 技术中的测量量, 既可以获得交叉千扰信息, 又避免增加新的测量量, 有利于控制设备实 现的复杂度; 或
耦合损耗( Coupling loss )信息, 是基于 RSRP换算得到的测量值, 避免新测量量的增 加, 进而避免增加设备的复杂度, 并且可以直接地表征传输节点装置之间的潜在千扰情况 (不受传输功率的影响)。 该测量量特别适用于传输节点装置交互延迟大或交互不频繁的 场景。
其中, 根据测量结果得到携带有交叉千扰强度信息的 01信息的方法为: 将测量得到
的导频序列的信号强度值与预设门限值进行比较, 根据比较结果确定交叉千扰强度的强 弱, 将确定结果作为交叉千扰强度信息携带在现有的 01信息中。 比如, 若测量得到的导 频序列的信号强度值大于预设门限值, 则确定交叉千扰强度为强, 否则, 确定交叉千扰强 度为弱; 又比如, 若测量得到的导频序列的信号强度值大于预设的第一门限值, 则确定交 叉千扰强度为强, 若测量得到的导频序列的信号强度值小于预设的第一门限值、 且大于预 设的第二门限值, 则确定交叉千扰强度为中等, 若测量得到的导频序列的信号强度值小于 预设的第二门限值, 则确定交叉千扰强度为弱, 其中第一门限值大于第二门限值。 其中预 设的门限值可以是传输节点装置自行确定的, 也可以是中心节点装置配置的。 同时在传输 节点装置自行确定该门限值时, 传输节点装置可将该门限值传递给其他传输节点装置或者 上 4艮给中心节点装置。
将交叉千扰强度信息( BS-BS interference )携带在现有的 01信息中时, 可以是使用现 有的 01信息中预留的信息比特来携带交叉千扰强度信息, 也可以是在现有的 01信息中增 加新的信息比特, 并使用新增的信息比特来携带交叉千扰强度信息。 使用现有的 01信息 中预留的信息比特来携带交叉千扰强度信息时, 具体方法可以参见下表 3 , 使用新增的信 息比特来携带交叉千扰强度信息时, 具体方法可以参见下表 4和表 5。
IE type and
IE/Group Name Presence Range reference Semantics description
(信息元素) (存在) (范围) ( IE类型及 (描述) 参数)
UL Interference 1 to
Overload Indication <maxnoofPRB
List s>
(上行千扰负载指示 ( 1-最大 PRB
列表) 数)
ENUMERAT Each PRB is
ED (high identified by its
>UL Interference interference, position in the list: the
Overload Indication M medium first element in the list
(上行千扰负载指 (必选) interference, corresponds to PRB 0, 示) low the second to PRB 1, interference, etc.
high BS-BS (每个 PRB根据
interference) 在表中的位置确定:
(枚举 列表中的第一个元素 (强千扰,中 对应 PRB0 ,第二个对 千扰, 弱千 应 PRB1 , 以 α¾类推) 扰,强交叉千
扰))
表 3
表 3复用现有枚举格式, 在现有 IE格式上扩展, 避免了新增的信令开销。 同时可以指 示 BS-BS千扰, 有利于交叉千扰的控制。
"0" indicates ' low interference sensitivity' . The maximum number of Physical Resource Blocks is 110
(比特映射的每个位 置代表一个 PRB.1代 表强千扰, 0代表弱 千扰。
PRB 最大数为 110. ) 表 4
表 4和表 5中增加一个可选的 IE, 即 BS-BS interference overhead indication来携带交 叉千扰强度信息, 该方法基于现有 IE可扩展的特性, 具有很好的兼容性。表 4和表 5中的 两种 IE类型各有优势, 表 4中的枚举( ENUMERATED )类型使得反馈精确, 便于支持更 复杂的千扰控制方案, 表 5 中的比特( BIT )信令的开销小, 适用于交互频繁或信令资源 有限的场景。
根据测量结果得到指示交叉千扰强度的信息的方法为: 将测量得到的导频序列的信号 强度值与预设门限值进行比较, 根据比较结果确定交叉千扰强度的强弱, 将确定结果作为 指示交叉千扰强度的信息。 比如, 若测量得到的导频序列的信号强度值大于预设门限值, 则确定交叉千扰强度为强, 否则, 确定交叉千扰强度为弱; 又比如, 若测量得到的导频序 列的信号强度值大于预设的第一门限值, 则确定交叉千扰强度为强, 若测量得到的导频序 列的信号强度值小于预设的第一门限值、 且大于预设的第二门限值, 则确定交叉千扰强度 为中等, 若测量得到的导频序列的信号强度值小于预设的第二门限值, 则确定交叉千扰强 度为弱, 其中第一门限值大于第二门限值。 其中预设的门限值可以是传输节点装置自行确 定的, 也可以是中心节点装置配置的。 同时在传输节点装置自行确定该门限值时, 传输节 点装置可将该门限值传递给其他传输节点装置或者上 ·ί艮给中心节点装置。
指示交叉千扰强度的信息可以釆用如下表 6或表 7所示的结构。
BIT
(High
>BS-BS Interference
0 1 interference,
Overload Indication
Low
interference)
表 6
RSRP信息与现有技术中的定义类似,只是不再限定测量的导频序列为下行公共导频。 该导频序列可以是配置的某类导频 (如 CSI-RS ( channel state information reference signal, 信道状态信息测量参考信号), 或修正的 CRS ( Cell-specific reference signals, 小 区专属导频信号)等)。
修正的 CRS可以是只在有限的子帧 (例如固定的下行子帧) 内发送的下行公共导频;
其导频序列可以与小区标识绑定, 也可以是由传输节点装置或中心节点装置配置。
这里, RSRP 不一定基于下行公共导频测量得到, 也可以基于配置的测量导频得到。 该方案拓展了 RSRP的测量导频, 适用于更多的场景。
根据测量结果得到耦合损耗的方法为: 耦合损耗=测量得到的导频序列的 EPRE (每个 资源元素上的功率) -RSRP。
步骤 51 中, 传输节点装置将交叉千扰信息发送给其他传输节点装置时, 需要将交叉 千扰信息发送给得到该交叉千扰信息所使用的测量导频配置信息对应的传输节点装置, 以 使接收到交叉千扰信息的传输节点装置能够更有针对性的进行千扰控制。 具体说明如下: 在传输节点装置釆用方法一获取千扰测量配置信息时, 传输节点装置将交叉千扰信 息发送给其他传输节点装置, 具体实现可以如下:
传输节点装置将交叉千扰信息发送给获取的小区标识对应的小区所属的传输节点装 置。
在传输节点装置釆用方法二获取千扰测量配置信息时, 传输节点装置将交叉千扰信 息发送给其他传输节点装置, 具体实现可以如下:
传输节点装置根据预先设定的测量导频配置信息与传输节点装置的对应关系, 确定接 收的测量导频配置信息对应的传输节点装置, 并将交叉千扰信息发送给确定的传输节点装 置。
在传输节点装置釆用方法三获取千扰测量配置信息时, 传输节点装置将交叉千扰信 息发送给其他传输节点装置, 具体实现可以如下:
传输节点装置将交叉千扰信息发送给接收的测量导频配置信息对应的传输节点装置。 在传输节点装置釆用方法四获取千扰测量配置信息时, 传输节点装置将交叉千扰信息 发送给其他传输节点装置, 具体实现可以如下:
传输节点装置将交叉千扰信息发送给获得的测量导频配置信息对应的其他传输节点 装置。
同样的, 步骤 51 中, 传输节点装置将交叉千扰信息发送给中心节点装置时, 需要使 中心节点装置能够获知收到的交叉千扰信息所对应的测量导频配置信息或传输节点装置, 以使中心节点装置能够更有针对性的进行千扰控制。 具体如下:
在传输节点装置釆用方法一获取千扰测量配置信息时, 传输节点装置将交叉千扰信息 发送给中心节点装置, 具体实现可以如下:
传输节点装置将交叉千扰信息及其对应的测量导频配置信息的标识发送给中心节点 装置; 交叉千扰信息对应的测量导频配置信息是指得到该交叉千扰信息所使用的测量导频
配置信息; 或者,
传输节点装置将交叉千扰信息及获取的小区标识对应的小区所属的传输节点装置的 信息发送给中心节点装置。
在传输节点装置釆用方法二获取千扰测量配置信息时, 传输节点装置将交叉千扰信息 发送给中心节点装置, 具体实现可以如下:
传输节点装置按照各测量导频配置信息的接收顺序, 将根据各测量导频配置信息测量 得到的交叉千扰信息依次发送给中心节点装置; 或者,
传输节点装置将交叉千扰信息以及接收的测量导频配置信息的标识发送给中心节点 装置; 或者,
传输节点装置根据预先设定的测量导频配置信息与传输节点装置的对应关系, 确定接 收的测量导频配置信息对应的传输节点装置, 将交叉千扰信息以及确定的传输节点装置的 信息发送给中心节点装置。
在传输节点装置釆用方法三获取千扰测量配置信息时, 传输节点装置将交叉千扰信息 发送给中心节点装置, 具体实现可以如下:
传输节点装置按照各测量导频配置信息的接收顺序, 将根据各测量导频配置信息测量 得到的交叉千扰信息依次发送给中心节点装置; 或者,
传输节点装置将交叉千扰信息以及接收的测量导频配置信息的标识发送给中心节点 装置; 或者,
传输节点装置将交叉千扰信息以及接收的测量导频配置信息对应的传输节点装置的 信息发送给中心节点装置。
在传输节点装置釆用方法四获取千扰测量配置信息时, 传输节点装置将交叉千扰信息 发送给中心节点装置, 具体实现可以如下:
传输节点装置将交叉千扰信息以及获得的测量导频配置信息的标识发送给中心节点 装置; 或者,
传输节点装置将交叉千扰信息以及发送获得的测量导频配置信息的其他传输节点装 置的信息发送给中心节点装置。
步骤 51 中, 在传输节点装置将交叉千扰信息发送给其他传输节点装置时, 上 4艮的交 叉千扰信息需要与传输节点装置相对应, 即将交叉千扰信息发送给得到该交叉千扰信息所 使用的测量导频配置信息对应的传输节点装置, 如图 8a所示。 这种方式使用的条件是: 传 输节点装置需要知道测量导频配置信息与传输节点装置的对应关系。 这种对应关系可以隐 性获得, 例如预先将测量导频配置信息 (如导频序列与传输节点装置的标识)绑定。 也可
以由中心节点装置将该对应关系通知给传输节点装置, 或传输节点装置之间交互得到对方 的测量导频配置信息。
步骤 51中, 如图 8b所示, 传输节点装置将交叉千扰信息和测量导频配置信息的标识 一同发送给中心节点装置,如图 8c所示,传输节点装置将交叉千扰信息和传输节点装置的 信息一同发送给中心节点装置。
如图 8b所示, 传输节点装置只需建立测量导频配置信息与交叉千扰信息的对应关系。 其中测量导频配置信息的列表可由中心节点装置通知给各个传输节点装置。
如图 8c所示,传输节点装置需要建立传输节点装置与交叉千扰信息的对应关系。这种 对应关系可以由测量导频配置信息与传输节点装置的对应关系得到。 测量导频配置信息与 传输节点装置的对应关系可以由中心节点装置直接配置, 也可以通过传输节点装置间交互 获得。
对于上述如图 8b和如图 8c所示的两种上报方式,其接口可以是以下两种中一种接口, 但不限于下面两种接口: X2接口、 空中接口。
对于上述两种上报方式, 其触发上报的情况可以是以下三种中一种, 但不限于下面三 种: 接入初始上报; 周期上报; 事件触发上报。
传输节点装置隐性获得测量导频配置信息的说明如下: 当交叉千扰的测量基于下行公 共导频时, 由于下行公共导频与小区标识(cell_ID )绑定, 因此, 传输节点装置可以直接 将测量结果与传输节点装置对应。
本方法中, 测量导频配置信息包括: 序列信息、 配置信息、周期信息和起始子帧信息; 其中, 序列信息指示测量的导频序列; 配置信息指示测量时在一个 PRB (物理资源块) 内 的 RE (资源单元)位置; 周期信息指示测量的时间周期; 起始子帧信息指示测量开始的 子帧。
进一步的, 测量导频配置信息还可以包括: 天线端口信息、 发送功率信息、 频点及带 宽信息中的一个或任意多个; 其中, 天线端口信息指示导频序列所在的天线端口; 发送功 率信息指示导频序列的发送功率; 频点及带宽信息测量所在的频点及带宽。
具体说明如下:
序列信息, 通常序列的构造是协议确定的, 所以序列信息通常指序列的初始化信息。 例如 CSI-RS ( channel- state-information reference signal, 下行测量导频), 其伪随机序列的 初始化方式为: ^ = 2l° ' (7 ' ("s + l) + / + lH2J + l) + U + NCP , 其中 X需要显性地通知 给传输节 点 装置 。 例 如 CRS , 其伪 随机序 列 的 初 始 化 方 式 为 :
nit = 21° '(7' ("s +l)+/ + l)' (2 ' A¾u +l)+ 2 ' A¾u + WCP , 其中 ns为无线帧内的时隙号, 1为 0FDM 符号序列, 为小区标识, cp与 CP配置有关。 在邻小区列表中可以得到。
配置信息 (图样): 配置信息指需测量的导频序列在子帧内的位置, 也是通常所说的 导频图样。 例如 CSI-RS最多有 32种导频图样可选(TDD系统), 需要显性地通知给传输 节点具体釆用哪一种导频图样用于交叉千扰测量。例如 CRS导频图样确定, 只是不同小区
¾ rcell ¾ rcell
在频域上有不同的偏移。 因此只要知道 vm , 也就知道导频图样。 其中, Vm在邻小区列 表中可以得到。
周期和起始子帧信息: 周期和起始子帧信息指示需测量的导频序列在哪些子帧发送。 例如 CSI-RS有 155种不同周期和起始子帧的组合, 需要显性地通知给传输节点装置具体 在哪些子帧可以进行交叉千扰测量。例如 CRS是每一个子帧都发送,或者只在特定地子帧 发送。 这个规则在协议中已经约定, 因此传输节点装置只需参考协议约定即可以知道测量 导频在哪些子帧发送, 无需信令通知。
天线端口: 同一组导频配置中的不同天线端口可以是由一个传输节点发送的, 也可以 是由不同的传输节点发送的。 对于不同天线端口由一个传输节点发送的场景, 该场景可以 釆用 CSI-RS 或者 CRS, 该场景无需通知具体的天线端口信息。 对于不同天线端口由不同 的传输节点发送的场景, 该场景一般釆用 CSI-RS。 该场景下需要区别不同的天线端口, 甚 至要明确不同天线端口与传输节点的对应关系。
发送功率: 发送功率通常指测量导频在每个资源元素上的发送功率。 通常在需要获得 pathloss,或 coupling loss的场景需要通知这个信息。这个信息釆用显性方式通知。显性通知 的接口可以是 X2接口或空中接口或者其他。 显性通知的方式可以是初始接入时通知或周 期性通知或事件触发性的通知。
为了解决可以进行交叉千扰控制的一种装置即传输节点装置如何进行交叉千扰控制 以降低交叉千扰的问题, 本发明实施例提供一种千扰控制方法。
参见图 6, 本发明实施例提供的一种千扰控制方法, 包括以下步骤:
步骤 60: 传输节点装置接收其他传输节点装置发送的交叉千扰信息;
步骤 61 : 传输节点装置根据交叉千扰信息进行功率控制或调整上下行配置, 以降低该 传输节点装置对其他传输节点装置的交叉千扰强度。 具体的, 接收到交叉千扰信息的传输 节点装置若根据交叉千扰信息判断自身对发送交叉千扰信息的传输节点装置的千扰较大, 则降低自身在千扰较大的子帧 /时隙的信号发射功率, 或调整自身的上下行配置, 以使接收 到交叉千扰信息的传输节点装置在千扰较大的子帧 /时隙的信号传输方向,与发送交叉千扰
信息的传输节点装置在该子帧 /时隙的信号传输方向相同; 比如, 传输节点装置 A釆用表 2 中的上下行子帧配置 1 , 传输节点装置 B釆用表 2中的上下行子帧配置 3 , 传输节点装置 A接收到来自传输节点装置 B的交叉千扰信息后,根据交叉千扰信息判断自身在子帧 4的 下行传输对传输节点装置 B在子帧 4的上行传输带来较大千扰,则传输节点装置 A可以将 自身的上下行配置调整为上下行子帧配置 3 , 使得自身的子帧 4与传输节点装置 B的子帧 4为同向子帧, 避免了交叉千扰。
较佳的, 在传输节点装置接收其他传输节点装置发送的交叉千扰信息之前, 传输节点 装置将自身对应的测量导频配置信息发送给其他传输节点装置。
为了解决可以进行交叉千扰控制的另一种装置即中心节点装置如何进行交叉千扰控 制以降低交叉千扰的问题, 本发明实施例提供一种千扰控制方法。
参见图 7, 本发明实施例提供的一种千扰控制方法, 包括以下步骤:
步骤 70: 中心节点装置接收传输节点装置发送的交叉千扰信息;
步骤 71: 中心节点装置根据交叉千扰信息指示一个或多个传输节点装置进行功率控制 或调整上下行配置, 以降低传输节点装置间的交叉千扰强度。 具体的, 中心节点装置根据 接收到的交叉千扰信息确定对其他传输节点装置产生较大千扰的传输节点装置, 然后指示 确定的传输节点装置降低在千扰较大的子帧 /时隙的信号发射功率,或指示确定的传输节点 装置调整上下行配置, 以使该传输节点装置在千扰较大的子帧 /时隙的信号传输方向, 与受 到千扰的传输节点装置在该子帧 /时隙的信号传输方向相同; 比如, 传输节点装置 A釆用 表 2中的上下行子帧配置 1 , 传输节点装置 B釆用表 2中的上下行子帧配置 3 , 中心节点 装置接收到来自传输节点装置 B的交叉千扰信息后,根据交叉千扰信息判断传输节点装置 A在子帧 4的下行传输对传输节点装置 B在子帧 4的上行传输带来较大千扰, 则中心节点 装置指示传输节点装置 A将上下行配置调整为上下行子帧配置 3 ,使得传输节点装置 A的 子帧 4与传输节点装置 B的子帧 4为同向子帧, 避免了交叉千扰。
中心节点装置可以根据交叉千扰信息对应的测量导频配置信息或传输节点装置, 确定 收到的交叉千扰信息是哪个传输节点装置对发送该交叉千扰信息的传输节点装置的千扰 信息。 例如, 中心节点装置接收到传输节点装置 1发来的交叉千扰信息, 该交叉千扰信息 对应测量导频配置 1 , 测量导频配置 1对应传输节点装置 2, 则该交叉千扰信息是传输节 点装置 2对传输节点装置 1的千扰信息; 又例如, 中心节点装置接收到传输节点装置 1发 来的交叉千扰信息, 该交叉千扰信息对应传输节点装置 2, 则该交叉千扰信息是传输节点 装置 2对传输节点装置 1的千扰信息。
较佳的, 在中心节点装置接收传输节点装置发送的交叉千扰信息之前, 中心节点装置
将千扰测量配置信息发送给传输节点装置。
具体的, 千扰测量配置信息包括传输节点装置的测量导频配置信息; 或者, 千扰测量 配置信息包括测量导频配置信息及测量导频配置信息对应的传输节点装置的信息。
如图 8d所示, 中心节点装置将测量导频配置信息的标识分别通知给每个传输节点。 如图 8e所示,中心节点装置将测量导频配置信息的标识和对应的传输节点装置的标识 分别通知给每个传输节点装置。
如图 8f所示,传输节点装置之间交互各自的测量导频配置信息, 则传输节点装置可以 自行建立传输节点装置与测量导频配置信息的对应关系。
参见图 9 , 本发明实施例提供一种传输节点装置, 该装置包括:
获取单元 90 , 用于获取千扰测量配置信息;
测量单元 91 , 用于根据获取的千扰测量配置信息进行交叉千扰测量, 得到交叉千扰信 息;
发送单元 92 , 用于将交叉千扰信息发送给其他传输节点装置或中心节点装置。
进一步的, 获取单元 90用于: 按照如下方法之一获取千扰测量配置信息: 方法一: 从邻小区列表中获取小区标识, 根据预先设定的小区标识与测量导频配置信 息的绑定关系, 确定获取的小区标识对应的测量导频配置信息, 将确定的测量导频配置信 息作为千扰测量配置信息;
方法二: 接收中心节点装置发送的测量导频配置信息, 将接收的测量导频配置信息作 为千扰测量配置信息;
方法三: 接收中心节点装置发送的测量导频配置信息及测量导频配置信息对应的传输 节点装置的信息, 将接收的测量导频配置信息及测量导频配置信息对应的传输节点装置的 信息作为千扰测量配置信息;
方法四: 通过与其他传输节点装置交互, 获得其他传输节点装置对应的测量导频配置 信息, 将获得的测量导频配置信息作为千扰测量配置信息。
进一步的, 发送单元 92 用于: 按照如下方法将交叉千扰信息发送给其他传输节点装 置:
在釆用方法一获取千扰测量配置信息时, 将交叉千扰信息发送给获取的小区标识对应 的小区所属的传输节点装置; 或者,
在釆用方法二获取千扰测量配置信息时, 根据预先设定的测量导频配置信息与传输节 点装置的对应关系, 确定接收的测量导频配置信息对应的传输节点装置, 并将交叉千扰信 息发送给确定的传输节点装置; 或者,
在釆用方法三获取千扰测量配置信息时, 将交叉千扰信息发送给接收的测量导频配置 信息对应的传输节点装置; 或者,
在釆用方法四获取千扰测量配置信息时, 将交叉千扰信息发送给获得的测量导频配置 信息对应的其他传输节点装置。
进一步的, 发送单元 92 用于: 在釆用方法一获取千扰测量配置信息时, 按照如下方 法将交叉千扰信息发送给中心节点装置:
将交叉千扰信息及对应的测量导频配置信息的标识发送给中心节点装置; 或者, 将交叉千扰信息及获取的小区标识对应的小区所属的传输节点装置的信息发送给中 心节点装置。
进一步的, 发送单元 92 用于: 在釆用方法二获取千扰测量配置信息时, 按照如下方 法将交叉千扰信息发送给中心节点装置:
按照各测量导频配置信息的接收顺序, 将根据各测量导频配置信息测量得到的交叉千 扰信息依次发送给中心节点装置; 或者,
将交叉千扰信息以及接收的测量导频配置信息的标识发送给中心节点装置; 或者, 根据预先设定的测量导频配置信息与传输节点装置的对应关系, 确定接收的测量导频 配置信息对应的传输节点装置, 将交叉千扰信息以及确定的传输节点装置的信息发送给中 心节点装置。
进一步的, 发送单元 92 用于: 在釆用方法三获取千扰测量配置信息时, 按照如下方 法将交叉千扰信息发送给中心节点装置:
按照各测量导频配置信息的接收顺序, 将根据各测量导频配置信息测量得到的交叉千 扰信息依次发送给中心节点装置; 或者,
将交叉千扰信息以及接收的测量导频配置信息的标识发送给中心节点装置; 或者, 将交叉千扰信 , 以及接收的测量导频配置信, 对应的传输节点装置的信息发送给中 心节点装置。
进一步的, 发送单元 92 用于: 在釆用方法四获取千扰测量配置信息时, 按照如下方 法将交叉千扰信息发送给中心节点装置:
将交叉千扰信息以及获得的测量导频配置信息的标识发送给中心节点装置; 或者, 将交叉千扰信息以及发送获得的测量导频配置信息的其他传输节点装置的信息发送 给中心节点装置。
进一步的, 交叉千扰信息为:
携带有交叉千扰强度信息的负载指示 01信息, 或
指示交叉千扰强度的信息, 或
参考信号接收强度 RSRP信息, 或
耦合损耗信息。
进一步的, 测量导频配置信息包括: 序列信息、 配置信息、周期信息和起始子帧信息; 序列信息指示测量的导频序列;配置信息指示测量时在一个物理资源块 PRB内的资源 单元 RE位置; 周期信息指示测量的时间周期; 起始子帧信息指示测量开始的子帧。
进一步的, 测量导频配置信息还包括: 天线端口信息、 发送功率信息、 频点及带宽信 息中的一个或任意多个;
天线端口信息指示导频序列所在的天线端口; 发送功率信息指示导频序列的发送功 率; 频点及带宽信息测量所在的频点及带宽。
参见图 10, 本发明实施例提供一种传输节点装置, 该装置包括:
接收单元 101 , 用于接收其他传输节点装置发送的交叉千扰信息;
千扰控制单元 102, 用于根据交叉千扰信息进行功率控制或调整上下行配置, 以降低 该传输节点装置对其他传输节点装置的交叉千扰强度。
进一步的, 该装置还包括:
发送单元 103 , 用于在接收其他传输节点装置发送的交叉千扰信息之前, 将自身对应 的测量导频配置信息发送给其他传输节点装置。
仍参见图 10, 本发明实施例提供一种中心节点装置, 该装置包括:
接收单元 101 , 用于接收传输节点装置发送的交叉千扰信息;
千扰控制单元 102, 用于根据交叉千扰信息指示一个或多个传输节点装置进行功率控 制或调整上下行配置, 以降低传输节点装置间的交叉千扰强度。
进一步的, 该装置还包括:
发送单元 103 , 用于在接收传输节点装置发送的交叉千扰信息之前, 将千扰测量配置 信息发送给传输节点装置。
进一步的, 千扰测量配置信息包括测量导频配置信息; 或者,
千扰测量配置信息包括测量导频配置信息及测量导频配置信息对应的传输节点装置 的信息。
如图 11所示,本发明实施例提供的一种传输节点装置包括: 第一处理器 111和第一发 射器 112。
第一处理器 111 , 用于获取千扰测量配置信息, 根据获取的千扰测量配置信息进行交 叉千扰测量, 得到交叉千扰信息;
第一发射器 112, 用于将交叉千扰信息发送给其他传输节点装置或中心节点装置。 较佳地, 第一处理器 111用于: 按照如下方法之一获取千扰测量配置信息: 方法一: 从邻小区列表中获取小区标识, 根据预先设定的小区标识与测量导频配置信 息的绑定关系, 确定获取的小区标识对应的测量导频配置信息, 将确定的测量导频配置信 息作为千扰测量配置信息;
方法二: 接收中心节点装置发送的测量导频配置信息, 将接收的测量导频配置信息作 为千扰测量配置信息;
方法三: 接收中心节点装置发送的测量导频配置信息及测量导频配置信息对应的传输 节点装置的信息, 将接收的测量导频配置信息及测量导频配置信息对应的传输节点装置的 信息作为千扰测量配置信息;
方法四: 通过与其他传输节点装置交互, 获得其他传输节点装置对应的测量导频配置 信息, 将获得的测量导频配置信息作为千扰测量配置信息。
较佳地, 第一发射器 112用于: 按照如下方法将交叉千扰信息发送给其他传输节点装 置:
在釆用方法一获取千扰测量配置信息时, 将交叉千扰信息发送给获取的小区标识对应 的小区所属的传输节点装置; 或者,
在釆用方法二获取千扰测量配置信息时, 根据预先设定的测量导频配置信息与传输节 点装置的对应关系, 确定接收的测量导频配置信息对应的传输节点装置, 并将交叉千扰信 息发送给确定的传输节点装置; 或者,
在釆用方法三获取千扰测量配置信息时, 将交叉千扰信息发送给接收的测量导频配置 信息对应的传输节点装置; 或者,
在釆用方法四获取千扰测量配置信息时, 将交叉千扰信息发送给获得的测量导频配置 信息对应的其他传输节点装置。
较佳地, 第一发射器 112用于:
在釆用方法一获取千扰测量配置信息时, 按照如下方法将交叉千扰信息发送给中心节 点装置:
将交叉千扰信息及对应的测量导频配置信息的标识发送给中心节点装置; 或者, 将交 叉千扰信息及获取的小区标识对应的小区所属的传输节点装置的信息发送给中心节点装 置;
在釆用方法二获取千扰测量配置信息时, 按照如下方法将交叉千扰信息发送给中心节 点装置:
按照各测量导频配置信息的接收顺序, 将根据各测量导频配置信息测量得到的交叉千 扰信息依次发送给中心节点装置; 或者, 将交叉千扰信息以及接收的测量导频配置信息的 标识发送给中心节点装置; 或者, 根据预先设定的测量导频配置信息与传输节点装置的对 应关系, 确定接收的测量导频配置信息对应的传输节点装置, 将交叉千扰信息以及确定的 传输节点装置的信息发送给中心节点装置;
在釆用方法三获取千扰测量配置信息时, 按照如下方法将交叉千扰信息发送给中心节 点装置:
按照各测量导频配置信息的接收顺序, 将根据各测量导频配置信息测量得到的交叉千 扰信息依次发送给中心节点装置; 或者, 将交叉千扰信息以及接收的测量导频配置信息的 标识发送给中心节点装置; 或者, 将交叉千扰信息以及接收的测量导频配置信息对应的传 输节点装置的信息发送给中心节点装置;
在釆用方法四获取千扰测量配置信息时, 按照如下方法将交叉千扰信息发送给中心节 点装置:
将交叉千扰信息以及获得的测量导频配置信息的标识发送给中心节点装置; 或者, 将 交叉千扰信息以及发送获得的测量导频配置信息的其他传输节点装置的信息发送给中心 节点装置。
较佳地, 交叉千扰信息为:
携带有交叉千扰强度信息的负载指示 01信息, 或
指示交叉千扰强度的信息, 或
参考信号接收强度 RSRP信息, 或
耦合损耗信息。
较佳地, 测量导频配置信息包括: 序列信息、 配置信息、 周期信息和起始子帧信息; 序列信息指示测量的导频序列;配置信息指示测量时在一个物理资源块 PRB内的资源 单元 RE位置; 周期信息指示测量的时间周期; 起始子帧信息指示测量开始的子帧。
较佳地, 测量导频配置信息还包括: 天线端口信息、 发送功率信息、 频点及带宽信息 中的一个或任意多个;
天线端口信息指示导频序列所在的天线端口; 发送功率信息指示导频序列的发送功 率; 频点及带宽信息测量所在的频点及带宽。
如图 12所示, 本发明实施例提供的另一种传输节点装置包括: 第一接收器 121和第 二处理器 122。
第一接收器 121 , 用于接收其他传输节点装置发送的交叉千扰信息;
第二处理器 122, 用于根据交叉千扰信息进行功率控制或调整上下行配置, 以降低该 传输节点装置对其他传输节点装置的交叉千扰强度。
较佳地, 该装置还包括: 第二发射器 123。
第二发射器 123 , 用于在接收其他传输节点装置发送的交叉千扰信息之前, 将自身对 应的测量导频配置信息发送给其他传输节点装置。
如图 13所示, 本发明实施例提供的中心节点装置包括: 第二接收器 131和第三处理 器 132。
第二接收器 131 , 用于接收传输节点装置发送的交叉千扰信息;
第三处理器 132, 用于根据交叉千扰信息指示一个或多个传输节点装置进行功率控制 或调整上下行配置, 以降低传输节点装置间的交叉千扰强度。
较佳地, 该装置还包括: 第三发射器 133。
第三发射器 133 , 用于在接收传输节点装置发送的交叉千扰信息之前, 将千扰测量配 置信息发送给传输节点装置。
较佳地, 千扰测量配置信息包括测量导频配置信息; 或者,
千扰测量配置信息包括测量导频配置信息及测量导频配置信息对应的传输节点装置 的信息。
本发明是参照根据本发明实施例的方法、 设备(系统)、 和计算机程序产品的流程图 和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图和 /或方框图中的每一流 程和 /或方框、 以及流程图和 /或方框图中的流程和 /或方框的结合。 可提供这些计算机 程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器 以产生一个机器, 使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用 于实现在流程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的 装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方 式工作的计算机可读存储器中, 使得存储在该计算机可读存储器中的指令产生包括指令装 置的制造品, 该指令装置实现在流程图一个流程或多个流程和 /或方框图一个方框或多个 方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计算机 或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理, 从而在计算机或其他 可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和 /或方框图一个 方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例, 但本领域内的技术人员一旦得知了基本创造性概 念, 则可对这些实施例作出另外的变更和修改。 所以, 所附权利要求意欲解释为包括优选 实施例以及落入本发明范围的所有变更和修改。
显然, 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和 范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。
Claims
1、 一种千扰信息的反馈方法, 其特征在于, 该方法包括:
传输节点装置获取千扰测量配置信息, 根据获取的千扰测量配置信息进行交叉千扰测 量, 得到交叉千扰信息;
所述传输节点装置将所述交叉千扰信息发送给其他传输节点装置或中心节点装置。
2、 如权利要求 1 所述的方法, 其特征在于, 所述传输节点装置釆用下列方法中的一 种获取千扰测量配置信息:
方法一: 传输节点装置从邻小区列表中获取小区标识, 根据预先设定的小区标识与测 量导频配置信息的绑定关系, 确定获取的小区标识对应的测量导频配置信息, 将确定的测 量导频配置信息作为千扰测量配置信息;
方法二: 传输节点装置接收中心节点装置发送的测量导频配置信息, 将接收的测量导 频配置信息作为千扰测量配置信息;
方法三: 传输节点装置接收中心节点装置发送的测量导频配置信息及测量导频配置信 息对应的传输节点装置的信息, 将接收的测量导频配置信息及测量导频配置信息对应的传 输节点装置的信息作为千扰测量配置信息;
方法四: 传输节点装置通过与其他传输节点装置交互, 获得其他传输节点装置对应的 测量导频配置信息, 将获得的测量导频配置信息作为千扰测量配置信息。
3、 如权利要求 2 所述的方法, 其特征在于, 所述传输节点装置将所述交叉千扰信息 发送给其他传输节点装置, 具体包括:
在传输节点装置釆用所述方法一获取千扰测量配置信息时, 所述传输节点装置将所述 交叉千扰信息发送给获取的小区标识对应的小区所属的传输节点装置; 或者,
在传输节点装置釆用所述方法二获取千扰测量配置信息时, 所述传输节点装置根据预 先设定的测量导频配置信息与传输节点装置的对应关系, 确定接收的测量导频配置信息对 应的传输节点装置, 并将所述交叉千扰信息发送给确定的传输节点装置; 或者,
在传输节点装置釆用所述方法三获取千扰测量配置信息时, 所述传输节点装置将所述 交叉千扰信息发送给接收的测量导频配置信息对应的传输节点装置; 或者,
在传输节点装置釆用所述方法四获取千扰测量配置信息时, 所述传输节点装置将所述 交叉千扰信息发送给获得的测量导频配置信息对应的其他传输节点装置。
4、 如权利要求 2 所述的方法, 其特征在于, 在传输节点装置釆用所述方法一获取千 扰测量配置信息时, 所述传输节点装置将所述交叉千扰信息发送给中心节点装置, 具体包 括:
所述传输节点装置将所述交叉千扰信息及对应的测量导频配置信息的标识发送给中 心节点装置; 或者, 所述传输节点装置将所述交叉千扰信息及获取的小区标识对应的小区 所属的传输节点装置的信息发送给中心节点装置;
在传输节点装置釆用所述方法二获取千扰测量配置信息时, 所述传输节点装置将所述 交叉千扰信息发送给中心节点装置, 具体包括:
所述传输节点装置按照各测量导频配置信息的接收顺序, 将根据各测量导频配置信息 测量得到的交叉千扰信息依次发送给中心节点装置; 或者, 所述传输节点装置将所述交叉 千扰信息以及接收的测量导频配置信息的标识发送给中心节点装置; 或者, 所述传输节点 装置根据预先设定的测量导频配置信息与传输节点装置的对应关系, 确定接收的测量导频 配置信息对应的传输节点装置, 将所述交叉千扰信息以及确定的传输节点装置的信息发送 给中心节点装置;
在传输节点装置釆用所述方法三获取千扰测量配置信息时, 传输节点装置将所述交叉 千扰信息发送给中心节点装置, 具体包括:
所述传输节点装置按照各测量导频配置信息的接收顺序, 将根据各测量导频配置信息 测量得到的交叉千扰信息依次发送给中心节点装置; 或者, 所述传输节点装置将所述交叉 千扰信息以及接收的测量导频配置信息的标识发送给中心节点装置; 或者, 所述传输节点 装置将所述交叉千扰信息以及接收的测量导频配置信息对应的传输节点装置的信息发送 给中心节点装置;
在传输节点装置釆用所述方法四获取千扰测量配置信息时, 传输节点装置将所述交叉 千扰信息发送给中心节点装置, 具体包括:
所述传输节点装置将所述交叉千扰信息以及获得的测量导频配置信息的标识发送给 中心节点装置; 或者, 所述传输节点装置将所述交叉千扰信息以及发送获得的测量导频配 置信息的其他传输节点装置的信息发送给中心节点装置。
5、 如权利要求 1-4中任一所述的方法, 其特征在于, 所述交叉千扰信息为: 携带有交叉千扰强度信息的负载指示 01信息, 或
指示交叉千扰强度的信息, 或
参考信号接收强度 RSRP信息, 或
耦合损耗信息。
6、 如权利要求 2-4中任一所述的方法, 其特征在于, 所述测量导频配置信息包括: 序 列信息、 配置信息、 周期信息和起始子帧信息;
所述序列信息指示测量的导频序列; 所述配置信息指示测量时在一个物理资源块 PRB
内的资源单元 RE位置; 所述周期信息指示测量的时间周期; 所述起始子帧信息指示测量 开始的子帧。
7、 如权利要求 6 所述的方法, 其特征在于, 所述测量导频配置信息还包括: 天线端 口信息、 发送功率信息、 频点及带宽信息中的一个或任意多个;
所述天线端口信息指示导频序列所在的天线端口; 所述发送功率信息指示导频序列的 发送功率; 所述频点及带宽信息测量所在的频点及带宽。
8、 一种千扰控制方法, 其特征在于, 该方法包括:
传输节点装置接收其他传输节点装置发送的交叉千扰信息;
所述传输节点装置根据所述交叉千扰信息进行功率控制或调整上下行配置, 以降低该 传输节点装置对其他传输节点装置的交叉千扰强度。
9、 如权利要求 8 所述的方法, 其特征在于, 所述传输节点装置接收其他传输节点装 置发送的交叉千扰信息之前, 进一步包括:
所述传输节点装置将自身对应的测量导频配置信息发送给其他传输节点装置。
10、 一种千扰控制方法, 其特征在于, 该方法包括:
中心节点装置接收传输节点装置发送的交叉千扰信息;
所述中心节点装置根据所述交叉千扰信息指示一个或多个传输节点装置进行功率控 制或调整上下行配置, 以降低传输节点装置间的交叉千扰强度。
11、如权利要求 10所述的方法,其特征在于, 中心节点装置接收传输节点装置发送的 交叉千扰信息之前, 进一步包括:
所述中心节点装置将千扰测量配置信息发送给传输节点装置。
12、如权利要求 11所述的方法,其特征在于, 所述千扰测量配置信息包括测量导频配 置信息; 或者,
所述千扰测量配置信息包括测量导频配置信息及测量导频配置信息对应的传输节点 装置的信息。
13、 一种传输节点装置, 其特征在于, 该装置包括:
获取单元, 用于获取千扰测量配置信息;
测量单元,用于根据获取的千扰测量配置信息进行交叉千扰测量,得到交叉千扰信息; 发送单元, 用于将所述交叉千扰信息发送给其他传输节点装置或中心节点装置。
14、 如权利要求 13 所述的装置, 其特征在于, 所述获取单元用于: 按照如下方法之 一获取千扰测量配置信息:
方法一: 从邻小区列表中获取小区标识, 根据预先设定的小区标识与测量导频配置信
息的绑定关系, 确定获取的小区标识对应的测量导频配置信息, 将确定的测量导频配置信 息作为千扰测量配置信息;
方法二: 接收中心节点装置发送的测量导频配置信息, 将接收的测量导频配置信息作 为千扰测量配置信息;
方法三: 接收中心节点装置发送的测量导频配置信息及测量导频配置信息对应的传输 节点装置的信息, 将接收的测量导频配置信息及测量导频配置信息对应的传输节点装置的 信息作为千扰测量配置信息;
方法四: 通过与其他传输节点装置交互, 获得其他传输节点装置对应的测量导频配置 信息, 将获得的测量导频配置信息作为千扰测量配置信息。
15、 如权利要求 14 所述的装置, 其特征在于, 所述发送单元用于: 按照如下方法将 所述交叉千扰信息发送给其他传输节点装置:
在釆用所述方法一获取千扰测量配置信息时, 将所述交叉千扰信息发送给获取的小区 标识对应的小区所属的传输节点装置; 或者,
在釆用所述方法二获取千扰测量配置信息时, 根据预先设定的测量导频配置信息与传 输节点装置的对应关系, 确定接收的测量导频配置信息对应的传输节点装置, 并将所述交 叉千扰信息发送给确定的传输节点装置; 或者,
在釆用所述方法三获取千扰测量配置信息时, 将所述交叉千扰信息发送给接收的测量 导频配置信息对应的传输节点装置; 或者,
在釆用所述方法四获取千扰测量配置信息时, 将所述交叉千扰信息发送给获得的测量 导频配置信息对应的其他传输节点装置。
16、 如权利要求 14所述的装置, 其特征在于, 所述发送单元用于:
在釆用所述方法一获取千扰测量配置信息时, 按照如下方法将所述交叉千扰信息发送 给中心节点装置:
将所述交叉千扰信息及对应的测量导频配置信息的标识发送给中心节点装置; 或者, 将所述交叉千扰信息及获取的小区标识对应的小区所属的传输节点装置的信息发送给中 心节点装置;
在釆用所述方法二获取千扰测量配置信息时, 按照如下方法将所述交叉千扰信息发送 给中心节点装置:
按照各测量导频配置信息的接收顺序, 将根据各测量导频配置信息测量得到的交叉千 扰信息依次发送给中心节点装置; 或者, 将所述交叉千扰信息以及接收的测量导频配置信 息的标识发送给中心节点装置; 或者, 根据预先设定的测量导频配置信息与传输节点装置
的对应关系, 确定接收的测量导频配置信息对应的传输节点装置, 将所述交叉千扰信息以 及确定的传输节点装置的信息发送给中心节点装置;
在釆用所述方法三获取千扰测量配置信息时, 按照如下方法将所述交叉千扰信息发送 给中心节点装置:
按照各测量导频配置信息的接收顺序, 将根据各测量导频配置信息测量得到的交叉千 扰信息依次发送给中心节点装置; 或者, 将所述交叉千扰信息以及接收的测量导频配置信 息的标识发送给中心节点装置; 或者, 将所述交叉千扰信息以及接收的测量导频配置信息 对应的传输节点装置的信息发送给中心节点装置;
在釆用所述方法四获取千扰测量配置信息时, 按照如下方法将所述交叉千扰信息发送 给中心节点装置:
将所述交叉千扰信息以及获得的测量导频配置信息的标识发送给中心节点装置; 或 者, 将所述交叉千扰信息以及发送获得的测量导频配置信息的其他传输节点装置的信息发 送给中心节点装置。
17、 如权利要求 13-16中任一所述的装置, 其特征在于, 所述交叉千扰信息为: 携带有交叉千扰强度信息的负载指示 01信息, 或
指示交叉千扰强度的信息, 或
参考信号接收强度 RSRP信息, 或
耦合损耗信息。
18、如权利要求 14-16中任一所述的装置, 其特征在于, 所述测量导频配置信息包括: 序列信息、 配置信息、 周期信息和起始子帧信息;
所述序列信息指示测量的导频序列; 所述配置信息指示测量时在一个物理资源块 PRB 内的资源单元 RE位置; 所述周期信息指示测量的时间周期; 所述起始子帧信息指示测量 开始的子帧。
19、 如权利要求 18 所述的装置, 其特征在于, 所述测量导频配置信息还包括: 天线 端口信息、 发送功率信息、 频点及带宽信息中的一个或任意多个;
所述天线端口信息指示导频序列所在的天线端口; 所述发送功率信息指示导频序列的 发送功率; 所述频点及带宽信息测量所在的频点及带宽。
20、 一种传输节点装置, 其特征在于, 该装置包括:
接收单元, 用于接收其他传输节点装置发送的交叉千扰信息;
千扰控制单元, 用于根据所述交叉千扰信息进行功率控制或调整上下行配置, 以降低 该传输节点装置对其他传输节点装置的交叉千扰强度。
21、 如权利要求 20所述的装置, 其特征在于, 该装置还包括:
发送单元, 用于在接收其他传输节点装置发送的交叉千扰信息之前, 将自身对应的测 量导频配置信息发送给其他传输节点装置。
22、 一种中心节点装置, 其特征在于, 该装置包括:
接收单元, 用于接收传输节点装置发送的交叉千扰信息;
千扰控制单元, 用于根据所述交叉千扰信息指示一个或多个传输节点装置进行功率控 制或调整上下行配置, 以降低传输节点装置间的交叉千扰强度。
23、 如权利要求 22所述的装置, 其特征在于, 该装置还包括:
发送单元, 用于在接收传输节点装置发送的交叉千扰信息之前, 将千扰测量配置信息 发送给传输节点装置。
24、 如权利要 23 所述的装置, 其特征在于, 所述千扰测量配置信息包括测量导频配 置信息; 或者,
所述千扰测量配置信息包括测量导频配置信息及测量导频配置信息对应的传输节点 装置的信息。
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