CN112954746B - Cell residence method, processing method, device and network equipment - Google Patents
Cell residence method, processing method, device and network equipment Download PDFInfo
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- CN112954746B CN112954746B CN201911260539.XA CN201911260539A CN112954746B CN 112954746 B CN112954746 B CN 112954746B CN 201911260539 A CN201911260539 A CN 201911260539A CN 112954746 B CN112954746 B CN 112954746B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
- H04W36/0094—Definition of hand-off measurement parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a cell residence method, a processing method, a device and network equipment, wherein the method comprises the following steps: acquiring the signal quality of a cell; when the signal quality of the cell does not meet the requirement of the power dynamic range of the IAB node, adjusting the cell priority of the corresponding cell; and selecting a resident cell according to the adjusted cell priority. When the signal quality of the cell does not meet the requirement of the power dynamic range of the IAB node, the embodiment of the invention adjusts the priority of the cell, so that the IAB node can select a more proper cell for residence, the near-far effect caused by the power dynamic range of the IAB node can be solved, the DU bottom noise is reduced while the signal quality is ensured to be good, and the transmission performance of the system is improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a cell residence method, a processing method, a device, and a network device.
Background
In the fifth generation (5 th Generation, 5G) Mobile communication System, alternatively called New air interface (NR) System, supports three application scenarios of enhanced Mobile broadband (enhanced Mobile Broadband, eMBB) communication, massive machine type communication (massive Machine Type Communications, mMTC), high reliability Ultra Low latency communication (Ultra-Reliable and Low Latency Communications, URLLC), especially URLLC to support New mission critical service autopilot New function, to reduce backhaul cost, achieve more efficient network density, introduce Integrated Access backhaul (Integrated Access &Backhaul, IAB) technique.
In an IAB node (node), a Mobile Terminal (MT) and a Distributed Unit (DU) use the same radio frequency link and radio frequency design of an antenna, so that the maximum transmission power of the IAB node is determined by the maximum transmission power of the DU, and after the maximum transmission power is defined, the minimum transmission power of the MT is limited by the dynamic range of the IAB node. To avoid interference to neighboring channels of different operators, MT in the IAB node must use uplink power control, which may enable the IAB node with better Backhaul (BH) link quality to use lower transmit power. The dynamic range of the IAB node is far smaller than that of the terminal, for example, 4.9GHz, and the existing dynamic range is insufficient to support the smaller power requirement of the MT of the IAB node in the case of being close to the parent node, that is, limited by the dynamic range of the IAB node, and the MT cannot transmit lower transmission power. Assuming that the IAB node maximum transmit power is 33dBm and a dynamic range of 43dB is supported, the minimum transmit power supported by the MT is-10 dBm and the MT cannot transmit at transmit powers below-10 dBm, as shown in fig. 1. When the distance between the IAB node and the father node is smaller than the inner loop line, MT transmitting power required by uplink power control is lower than-10 dBm, if the IAB node is positioned in the inner loop line, the bottom noise received by the father node DU is greatly improved, the signal quality of all the child nodes (terminals) accessed to the current father node is reduced, and the system performance is seriously affected.
Disclosure of Invention
The invention provides a cell residence method, a processing device and network equipment, which solve the problems of large receiving noise and poor signal quality of a parent node DU caused when uplink power control of an MT in an IAB node exceeds the dynamic range of the IAB node.
The embodiment of the invention provides a cell residence method which is applied to an Integrated Access Backhaul (IAB) node and comprises the following steps:
acquiring the signal quality of a cell;
when the signal quality of the cell does not meet the requirement of the power dynamic range of the IAB node, adjusting the cell priority of the corresponding cell;
and selecting a resident cell according to the adjusted cell priority.
The embodiment of the invention also provides a cell processing method which is applied to the network node and comprises the following steps:
receiving the power dynamic range of the IAB node sent by the integrated access backhaul IAB node in a connection state;
and when the signal quality of the cell of the current resident cell of the IAB node does not meet the requirement of the power dynamic range, adjusting the cell priority of the corresponding cell, or redirecting the IAB node to other cells with frequency points higher than the current resident cell.
The embodiment of the invention also provides a cell residence device which is applied to the integrated access backhaul IAB node and comprises the following components:
The acquisition module is used for acquiring the signal quality of the cell;
the adjusting module is used for adjusting the cell priority of the corresponding cell when the cell signal quality does not meet the requirement of the power dynamic range of the IAB node;
and the selection module is used for selecting the resident cell according to the adjusted cell priority.
The embodiment of the invention also provides a cell processing device which is applied to the network node and comprises:
the receiving module is used for receiving the power dynamic range of the IAB node sent by the integrated access backhaul IAB node in a connection state;
and the processing module is used for adjusting the cell priority of the corresponding cell or redirecting the IAB node to other cells with frequency points higher than the current resident cell when the signal quality of the cell where the IAB node is currently resident does not meet the requirement of the power dynamic range.
The embodiment of the invention also provides a network device, which comprises: a processor; a memory coupled to the processor, and a transceiver coupled to the processor; the processor is configured to invoke and execute the program and the data stored in the memory, to implement the steps of the cell residence method, or to implement the steps of the cell processing method.
The embodiment of the invention also provides a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and the computer program realizes the steps of the cell residence method or the steps of the cell processing method when being executed by a processor.
The technical scheme of the invention has the beneficial effects that: when the signal quality of the cell does not meet the requirement of the power dynamic range of the IAB node, the priority of the cell is adjusted, and after the priority of the cell is adjusted, the IAB node can select a more suitable cell to reside, so that the near-far effect caused by the power dynamic range of the IAB node can be solved, the DU bottom noise is reduced while the signal quality is ensured, and the transmission performance of the system is improved.
Drawings
FIG. 1 is a schematic diagram of a near-far effect scenario of an IAB node with a donor node or parent node;
FIG. 2 is a flow chart of a cell residence method according to an embodiment of the present invention;
fig. 3 is a schematic block diagram of an IAB node according to an embodiment of the present invention;
FIG. 4 is a flow chart of a method for processing a cell according to an embodiment of the invention;
fig. 5 is a schematic block diagram of a network node according to an embodiment of the present invention;
Fig. 6 is a block diagram of a network device according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided merely to facilitate a thorough understanding of embodiments of the invention. It will therefore be apparent to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
In addition, the terms "system" and "network" are often used interchangeably herein.
In the examples provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.
In a network system constructed based on an IAB node, if the minimum transmitting power determined by uplink power control does not meet the requirement (or called limitation) of the power dynamic range of the IAB node, the base noise received by a father node DU is greatly improved, the signal quality of all the child nodes (terminals) accessed to the current father node is reduced, and the system performance is seriously affected. To solve this problem, the MT antenna gain can be reduced by increasing the power dynamic range of the IAB node or by controlling the number of MT transmit antenna elements, thereby reducing the parent node signal receive power. However, in the two schemes, the power dynamic range of the IAB node is improved, and a new radio frequency link needs to be redeveloped, for example, an adjustable attenuator is added, which tends to increase the equipment cost; by controlling the number of MT antenna elements, an additional radio frequency mechanism needs to be added, which also increases the cost.
In order to solve the above problems and not increase the cost, when the signal quality of the cell does not meet the requirement of the power dynamic range of the IAB node, the embodiment of the invention adjusts the cell priority, so that the IAB node selects a more suitable cell for residence, thereby solving the near-far effect caused by the power dynamic range of the IAB node, ensuring good signal quality, reducing DU bottom noise and improving the transmission performance of the system.
As shown in fig. 2, an embodiment of the present invention provides a cell residence method, which is applied to an IAB node, and specifically includes the following steps:
step 21: and acquiring the signal quality of the cell.
Wherein, this step can include: in the process of selecting the cell, the cell signal quality of the current cell is obtained. Or in the process of cell reselection, acquiring the cell signal quality of the target cell. Or in the redirection process, acquiring the cell signal quality of the different system cells. Cell signal quality may include, but is not limited to: reference signal received power (Reference Signal Received Power), reference signal received quality (Reference Signal Received Quality), etc. may be used as parameters characterizing cell channel performance.
Step 22: and when the signal quality of the cell does not meet the requirement of the power dynamic range of the IAB node, adjusting the cell priority of the corresponding cell.
In the embodiment of the invention, the IAB node comprises MT and DU, and the MT and the DU use the same radio frequency link and the radio frequency design of the antenna, so that the maximum transmitting power of the IAB node is determined by the maximum transmitting power of the DU. Further, since the IAB node is a base station device whose power dynamic range is much smaller than that of the terminal, the minimum transmit power of the IAB node is determined by the maximum transmit power of the DU and the power dynamic range. Assuming that the maximum transmit power of DU is 33dBm and the power dynamic range is 43dBm, the minimum transmit power of IAB node is-10 dBm. The fact that the cell signal quality does not meet the requirement of the power dynamic range of the IAB node means that: when the IAB node resides in the cell with the cell signal quality, the transmitting power of the IAB node after being subjected to power control falls between the maximum transmitting power and the minimum transmitting power of the IAB node. For example, when the signal quality of the cell is good, the transmitting power of the IAB node is required to be smaller, and the transmitting power determined by the IAB node power control calculation is required to be larger than the minimum transmitting power. When the signal quality of the cell is poor, the transmitting power of the IAB node is required to be large, and the transmitting power determined by the IAB node power control calculation is required to be smaller than the maximum transmitting power. And if the signal quality of the cell does not meet the requirement of the dynamic power adjustment range of the IAB node, the IAB node can adjust the cell priority of the corresponding cell. The corresponding cells herein include, but are not limited to: the frequency point of the current cell searched in the cell selection process, the target cell in the cell reselection process and the different system cell in the redirection process is lower than that of the current cell, the target cell or the different system cell, and the frequency point of the different system cell is higher than that of the current cell, the target cell or the different system cell.
Optionally, after step 21, before step 22, the method further includes: it is determined whether the cell signal quality meets the requirements of the power dynamic range of the IAB node. Specifically, it may be determined by, but not limited to, the following: determining uplink transmitting power according to the RSRP and/or the RSRQ; if the uplink transmission power is smaller than the minimum transmission power of the IAB node, determining that the signal quality of the cell does not meet the requirement of the power dynamic range, wherein the minimum transmission power is determined according to the power dynamic range of the IAB node, namely, the maximum transmission power and the power dynamic range of the DU.
Step 23: and selecting a resident cell according to the adjusted cell priority.
Thus, the cell priority of the cell is adjusted according to whether the signal quality of the cell meets the requirement of the power dynamic range of the IAB node, and the residence priority of the cell can be changed, so that the IAB node finds a more suitable cell to reside to establish a return link. Therefore, the near-far effect caused by the power dynamic range of the IAB node is solved, the DU bottom noise is reduced while the signal quality is ensured to be good, and the transmission performance of the system is improved.
In some embodiments of the present invention, step 22 comprises: and when the signal quality of the first cell of the first frequency point does not meet the requirement of the power dynamic range, reducing the priority of the cell of which the frequency point is equal to the first frequency point or reducing the priority of the second cell and the cell of which the frequency point is equal to or lower than the first frequency point within the duration. The first cell may be a current cell searched in a cell selection process, or may be a target cell in a cell reselection process, or may be a different system cell in a redirection process. And when the cell signal quality of the first cell does not meet the requirement of the power dynamic range of the IAB node, reducing the cell priority of the first frequency point or the cells (including the first cell) of all frequency points lower than the first frequency point in the duration (a certain time). The cell priority in the embodiment of the invention refers to the absolute priority of the frequency point, and can influence the selection and residence of a proper cell, a target cell and a different system cell.
Optionally, when adjusting the cell priority of the first frequency point or lower frequency point cell, the cell priority of the high frequency point cell is kept unchanged. That is, the method further comprises: and when the signal quality of the cell does not meet the requirement of the power dynamic range, keeping the cell priority of the third cell with the frequency point higher than the first frequency point unchanged.
In some embodiments of the present invention, the cell residence method further includes: after adjusting the cell priority of the corresponding cell, the cell priority of the corresponding cell is restored after exceeding a certain time (duration). That is, after the duration is exceeded, the cell priorities of the first cell and the second cell are restored. For example, a timer is maintained, such as T320, and after exceeding the T320 time timer, the IAB node automatically resumes the original priority of the corresponding cell.
The cell residence method provided by the embodiment of the invention can be used for a cell selection process, a cell reselection process and a cell redirection process. The step 23 may include, but is not limited to: selecting a resident cell in a cell selection process according to the adjusted cell priority and a judgment criterion of a suitable (useable) cell; or selecting a resident cell of the cell reselection process according to the adjusted cell priority and the cell reselection criterion.
In addition, the method of the embodiment of the invention further comprises the following steps: and under the condition that the IAB node is in a connected state, reporting the self power dynamic range to the network node. Wherein the network node includes, but is not limited to, the parent node of the IAB node (i.e., the IAB node of the previous hop) or the donor node.
After this step, the method further comprises: receiving priority adjustment indication information, wherein the priority adjustment indication information is used for indicating: and in the duration, the frequency point is reduced to be equal to or lower than the cell priority of the fourth cell of the current resident cell of the IAB node and the current resident cell. Here, the cell priority may be actively adjusted by the IAB node, or may be adjusted and indicated by the network node.
Accordingly, after receiving the priority adjustment instruction information, the method further includes: and receiving priority restoration instruction information to restore the cell priorities of the cells with the cell priorities adjusted.
Having briefly introduced some implementations of the cell-camping method of embodiments of the present invention, the method is further described below based on different interaction procedures.
Example one,
When the IAB node (MT in the IAB node) selects the cell, if the signal quality of the current cell is judged not to meet the power dynamic range requirement of the MT, the IAB node reduces the frequency point or the absolute priority of the frequency point and all frequency points lower than the frequency point in a certain time, and the inter-frequency cell selection is carried out. In other words, when the MT of the IAB node performs cell selection, in addition to the criterion (current criterion) of the useable cell, it also includes ensuring that the signal quality of the current cell meets the terminal dynamic range capability requirement.
The criterion for judging that the signal quality of the current cell meets the requirement of the dynamic range of MT is that the MT judges possible uplink transmitting power according to the RSRP and RSRQ of the received cell, and calculates the minimum transmitting power capable of being achieved according to the dynamic range of the power, if the minimum transmitting power capable of being achieved by the terminal limited by the dynamic range of the power is greater than the possible uplink transmitting power, this means that the signal quality of the current cell does not meet the requirement of the dynamic range of the MT, at this moment, the MT sends a serious far-near effect, raises the bottom noise of the DU, needs to reduce the absolute priority of the frequency point or the frequency point and all frequency points lower than the frequency point, for example, the power dynamic range of the MT is 43dBm, the maximum transmitting power is 33dBm, which means that the minimum transmitting power is-10 dBm, and if the terminal judges that the possible uplink transmitting power range of the terminal is between-12 dBm and 20dBm according to the RSRP of the cell, since-12 dBm is lower than-10 dBm, which is not achieved by the IAB node (MT), the b node reduces the frequency point and the priority is lower than the frequency point, and the frequency point is lower than the frequency point is selected to be better, and the frequency point is selected to be a small frequency region.
The frequency point is reduced or the absolute priority of the frequency point and all frequency points lower than the frequency point are reduced, so that the priority of all frequency points lower than or equal to the frequency point is ordered according to the frequency, and the priority of all frequency points higher than the frequency point is kept unchanged. That is, if the current frequency point is 2.6GHz, all frequency points lower than and equal to 2.6GHz have higher priority, and the priority of the frequency points higher than 2.6GHz is unchanged.
And in a certain time, reducing the absolute priority of the frequency point or all frequency points lower than the frequency point, and recovering the priority of the original frequency point after exceeding the time limit value.
Example two,
When an IAB node (MT in the IAB node) searches a better cell (better cell) according to the cell reselection criteria, if the signal quality of a target cell (target cell) is judged to exceed the requirement of the dynamic range, the IAB node reduces the frequency point or reduces the absolute priority of the frequency point and all frequency points lower than the frequency point in a certain time, and the inter-frequency cell reselection is carried out.
In the cell residence method of the embodiment of the invention, when the signal quality of the cell does not meet the requirement of the power dynamic range of the IAB node, the priority of the cell is adjusted, so that the IAB node selects a more suitable cell for residence, a return link is established, the near-far effect caused by the power dynamic range of the IAB node can be solved, the good signal quality is ensured, the DU bottom noise is reduced, and the transmission performance of the system is improved.
The foregoing embodiments are described with respect to the cell residence method of the present invention, and the following embodiments will further describe corresponding devices with reference to the accompanying drawings.
Specifically, as shown in fig. 3, the cell residence device 300 of the embodiment of the present invention is applied to an IAB node, including but not limited to the following functional modules:
An acquisition module 310, configured to acquire cell signal quality;
an adjusting module 320, configured to adjust a cell priority of a corresponding cell when the cell signal quality does not meet the requirement of the power dynamic range of the IAB node;
a selecting module 330, configured to select a camping cell according to the adjusted cell priority.
Optionally, the adjustment module 320 includes:
and the adjusting sub-module is used for reducing the cell priority of the second cell and the first cell with the frequency point equal to or lower than the first frequency point in the duration time when the cell signal quality of the first cell with the first frequency point does not meet the requirement of the power dynamic range.
Optionally, the cell residence device further comprises:
and the maintaining module is used for maintaining the cell priority of the third cell with the frequency point higher than the first frequency point unchanged when the cell signal quality does not meet the requirement of the power dynamic range.
Optionally, the cell residence device further comprises:
and the recovery module is used for recovering the cell priorities of the first cell and the second cell after the preset duration time is exceeded.
Optionally, the cell signal quality comprises: the Reference Signal Received Power (RSRP) of the cell and/or the Reference Signal Received Quality (RSRQ) of the cell; the apparatus further comprises:
The first determining module is used for determining uplink transmitting power according to the RSRP and/or the RSRQ;
and the second determining module is used for determining that the signal quality of the cell does not meet the requirement of the power dynamic range if the uplink transmitting power is smaller than the minimum transmitting power of the IAB node, and the minimum transmitting power is determined according to the power dynamic range of the IAB node.
Optionally, the selection module 330 includes one of:
the first selection sub-module is used for selecting resident cells in the cell selection process according to the adjusted cell priority and the judgment criterion of the proper cells;
and the second selection sub-module is used for selecting a resident cell in the cell reselection process according to the adjusted cell priority and the cell reselection criterion.
Optionally, the cell residence device further comprises:
and the reporting module is used for reporting the power dynamic range to the network node under the condition of being in a connection state.
Optionally, the cell residence device further comprises:
the first receiving module is used for receiving priority adjustment indication information, wherein the priority adjustment indication information is used for indicating: and in the duration, the frequency point is reduced to be equal to or lower than the cell priority of the fourth cell of the current resident cell of the IAB node and the current resident cell.
Optionally, the cell selection apparatus further includes:
and the second receiving module is used for receiving the priority restoration instruction information.
The device embodiment of the invention corresponds to the embodiment of the method, and all the implementation means in the embodiment of the method are applicable to the embodiment of the device and can achieve the same technical effect. When the signal quality of the cell does not meet the requirement of the power dynamic range of the IAB node, the priority of the cell is adjusted, so that the IAB node can select a more proper cell for residence, the near-far effect caused by the power dynamic range of the IAB node can be solved, the DU bottom noise is reduced while the signal quality is ensured to be good, and the transmission performance of the system is improved.
The foregoing embodiments describe a cell residence method and a cell residence device according to embodiments of the present invention from an IAB node side, and a cell processing method and a cell processing device on a network node side will be described below with reference to the accompanying drawings.
As shown in fig. 4, the embodiment of the present invention further provides a cell processing method applied to a network node including, but not limited to, a parent node of the IAB node (i.e., the IAB node of the previous hop) or a donor node, where the method includes, but is not limited to:
step 41: and receiving the power dynamic range of the IAB node sent by the integrated access backhaul IAB node in a connection state.
The IAB node comprises MT and DU, and the MT and the DU use the same radio frequency link and the radio frequency design of the antenna, so the maximum transmitting power of the IAB node is determined by the maximum transmitting power of the DU. Further, since the IAB node is a base station device whose power dynamic range is much smaller than that of the terminal, the minimum transmit power of the IAB node is determined by the maximum transmit power of the DU and the power dynamic range. Assuming that the maximum transmit power of DU is 33dBm and the power dynamic range is 43dBm, the minimum transmit power of IAB node is-10 dBm.
Step 42: and when the signal quality of the cell of the current resident cell of the IAB node does not meet the requirement of the power dynamic range, adjusting the cell priority of the corresponding cell, or redirecting the IAB node to other cells with frequency points higher than the current resident cell.
The fact that the cell signal quality does not meet the requirement of the power dynamic range of the IAB node means that: when the IAB node resides in the cell with the cell signal quality, the transmitting power of the IAB node after being subjected to power control falls between the maximum transmitting power and the minimum transmitting power of the IAB node. For example, when the signal quality of the cell is good, the transmitting power of the IAB node is required to be smaller, and the transmitting power determined by the IAB node power control calculation is required to be larger than the minimum transmitting power. When the signal quality of the cell is poor, the transmitting power of the IAB node is required to be large, and the transmitting power determined by the IAB node power control calculation is required to be smaller than the maximum transmitting power.
If the cell signal quality does not meet the requirements of the power dynamic range of the IAB node, the network node can adjust the cell priority of the corresponding cell. The corresponding cells herein include, but are not limited to: the frequency point of the current cell searched in the cell selection process, the target cell in the cell reselection process and the different system cell in the redirection process is lower than that of the current cell, the target cell or the different system cell, and the frequency point of the different system cell is higher than that of the current cell, the target cell or the different system cell.
Or if the signal quality of the cell does not meet the requirement of the power dynamic range of the IAB node, the network node can redirect the IAB node to a cell with a higher frequency point and a different system to reside.
After step 41, before step 42, further includes: according to the power control algorithm, calculating the uplink transmitting power of the IAB node; if the uplink transmitting power is smaller than the minimum transmitting power of the IAB node, determining that the signal quality of the cell does not meet the requirement of the power dynamic range, wherein the minimum transmitting power is determined according to the power dynamic range of the IAB node, and the minimum transmitting power is determined according to the maximum transmitting power and the power dynamic range of the DU.
In some embodiments of the present invention, the step of adjusting the cell priority of the corresponding cell includes: and in the duration, the frequency point is reduced to be equal to or lower than the cell priority of the fourth cell of the current resident cell of the IAB node and the current resident cell. And when the cell signal quality of the current resident cell does not meet the requirement of the power dynamic range of the IAB node, reducing the cell priority of the cells (including the current resident cell) of all frequency points which are equal to or lower than the frequency point of the current resident cell in the duration (a certain time).
The method further comprises the steps of: sending priority adjustment indication information to the IAB node, wherein the priority adjustment indication information is used for indicating: and reducing the frequency point to be equal to or lower than the fourth cell of the current resident cell and the cell priority of the current resident cell in the duration. Correspondingly, the method further comprises the steps of: and sending priority restoration indication information to the IAB node, and informing the IAB node that the previously adjusted cell priority is restored.
The method is further described below based on different interaction procedures:
example III,
And reporting the own dynamic range capability to the network by the connected IAB node (MT in the IAB node), and redirecting the IAB node to a cell with a higher frequency point by the upper-level network node (father node or donor node) if the network node judges that the uplink transmitting power of the MT is smaller than the minimum transmitting power required by the dynamic range capability according to the power control algorithm.
The selection criterion of the higher frequency point cell is to ensure that the corresponding cell frequency point can meet the requirement of the dynamic range capability of the terminal, namely the actual transmitting power of the MT is larger than the minimum transmitting power which can be realized by the dynamic range capability under the corresponding cell frequency point.
Example four,
Reporting its own dynamic range capability to the network by the connected IAB node (MT in the IAB node), if the network node determines that the uplink transmit power of the MT is less than the minimum transmit power required by its dynamic range capability according to the power control algorithm, the network node reduces the frequency point or reduces the absolute priority (such as cell reselection priority) of the frequency point and all frequency points lower than the frequency point in a period of time, and informs the IAB node by a system message, special information such as RRC release message, etc., and after exceeding a time limit, restores the original priority of the frequency point, including but not limited to: after the time limit is exceeded, the system message is updated again to recover the original priority of the frequency point. Alternatively, a dedicated signaling time timer T320 is set, and after exceeding the time timer T320, the IAB node automatically recovers the original priority of the frequency point.
In the cell processing method of the embodiment of the invention, the network node receives the power dynamic range of the IAB node, and when the cell signal of the cell where the IAB node currently resides does not meet the requirement of the power dynamic range, the cell priority is adjusted so as to lead the IAB node to reselect to a more suitable cell for residence, or the IAB node is redirected to a cell with higher frequency point, thus solving the near-far effect caused by the power dynamic range of the IAB node, ensuring good signal quality, reducing DU bottom noise and improving the transmission performance of the system.
The foregoing embodiments are described with respect to the cell processing method of the present invention, and the following embodiments will further describe corresponding devices with reference to the accompanying drawings.
Specifically, as shown in fig. 5, the cell processing apparatus 500 of the embodiment of the present invention is applied to a network node, including but not limited to the following functional modules:
a receiving module 510, configured to receive a power dynamic range of an IAB node sent by an integrated access backhaul IAB node in a connected state;
and a processing module 520, configured to adjust the cell priority of the corresponding cell when the signal quality of the cell where the IAB node currently resides does not meet the requirement of the power dynamic range, or redirect the IAB node to another cell with a frequency point higher than that of the cell where the IAB node currently resides.
Optionally, the processing module 520 includes:
and the processing submodule is used for reducing the cell priority of the fourth cell with the frequency point equal to or lower than the frequency point of the cell where the IAB node currently resides and the cell where the IAB node currently resides in the duration.
Optionally, the cell processing apparatus further includes:
the first sending module is configured to send priority adjustment indication information to an IAB node, where the priority adjustment indication information is used to indicate: and in the duration, reducing the cell priority of the fourth cell with the frequency point equal to or lower than the frequency point of the cell where the IAB node currently resides and the cell where the IAB node currently resides.
Optionally, the cell processing apparatus further includes:
and the second sending module is used for sending the priority restoration instruction information to the IAB node.
Optionally, the cell processing apparatus further includes:
the calculation module is used for calculating the uplink transmitting power of the IAB node according to the power control algorithm;
and the determining module is used for determining that the signal quality of the cell does not meet the requirement of the power dynamic range if the uplink transmitting power is smaller than the minimum transmitting power of the IAB node, and the minimum transmitting power is determined according to the power dynamic range of the IAB node.
The device embodiment of the invention corresponds to the embodiment of the method, and all the implementation means in the embodiment of the method are applicable to the embodiment of the device and can achieve the same technical effect. And when the cell signal of the cell where the IAB node currently resides does not meet the requirement of the power dynamic range, adjusting the cell priority to enable the IAB node to reselect to a more suitable cell for residence, or redirecting the IAB node to a cell with a higher frequency point, so that the near-far effect caused by the power dynamic range of the IAB node can be solved, DU (data unit) background noise is reduced while the signal quality is ensured, and the transmission performance of a system is improved.
In order to better achieve the above object, as shown in fig. 6, an embodiment of the present invention further provides a network device, including: a processor 600; a memory 620 connected to the processor 600 through a bus interface, and a transceiver 610 connected to the processor 600 through a bus interface; the memory 620 is used to store programs and data used by the processor in performing operations; transmitting data information or pilot by the transceiver 610 and also receiving an uplink control channel by the transceiver 610; when the processor 600 calls and executes the programs and data stored in the memory 620, the following functions are achieved:
in the case that the network device is an IAB node, the processor 600 is configured to read the program in the memory 620, and execute the following procedure: acquiring the signal quality of a cell; when the signal quality of the cell does not meet the requirement of the power dynamic range of the IAB node, adjusting the cell priority of the corresponding cell; and selecting a resident cell according to the adjusted cell priority.
A transceiver 610 for receiving and transmitting data under the control of the processor 600.
In the case that the network device is a network node, the network node may be a parent node or a donor node of the IAB node, and the transceiver 610 is configured to receive and transmit data under the control of the processor 600, and specifically is configured to receive the power dynamic range of the IAB node sent by the integrated access backhaul IAB node in a connected state.
The processor 600 is configured to read a program in the memory 620, and execute the following procedure: and when the signal quality of the cell of the current resident cell of the IAB node does not meet the requirement of the power dynamic range, adjusting the cell priority of the corresponding cell, or redirecting the IAB node to other cells with frequency points higher than the current resident cell.
Wherein in fig. 6, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 600 and various circuits of memory represented by memory 620, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 610 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 600 in performing operations.
Those skilled in the art will appreciate that all or part of the steps of implementing the above-described embodiments may be implemented by hardware, or may be implemented by instructing the relevant hardware by a computer program comprising instructions for performing some or all of the steps of the above-described methods; and the computer program may be stored in a readable storage medium, which may be any form of storage medium.
Furthermore, it should be noted that in the apparatus and method of the present invention, it is apparent that the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present invention. Also, the steps of performing the series of processes described above may naturally be performed in chronological order in the order of description, but are not necessarily performed in chronological order, and some steps may be performed in parallel or independently of each other. It will be appreciated by those of ordinary skill in the art that all or any of the steps or components of the methods and apparatus of the present invention may be implemented in hardware, firmware, software, or a combination thereof in any computing device (including processors, storage media, etc.) or network of computing devices, as would be apparent to one of ordinary skill in the art after reading this description of the invention.
The object of the invention can thus also be achieved by running a program or a set of programs on any computing device. The computing device may be a well-known general purpose device. The object of the invention can thus also be achieved by merely providing a program product containing program code for implementing said method or apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is apparent that the storage medium may be any known storage medium or any storage medium developed in the future. It should also be noted that in the apparatus and method of the present invention, it is apparent that the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present invention. The steps of executing the series of processes may naturally be executed in chronological order in the order described, but are not necessarily executed in chronological order. Some steps may be performed in parallel or independently of each other.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (24)
1. A cell residence method applied to an integrated access backhaul, IAB, node, comprising:
acquiring the signal quality of a cell;
when the signal quality of the cell does not meet the requirement of the power dynamic range of the IAB node, adjusting the cell priority of the corresponding cell;
selecting a resident cell according to the adjusted cell priority;
and when the signal quality of the cell does not meet the requirement of the power dynamic range of the IAB node, adjusting the cell priority of the corresponding cell, wherein the method comprises the following steps of:
when the cell signal quality of a first cell of a first frequency point does not meet the requirement of the power dynamic range, reducing the cell priority of a second cell with the frequency point equal to or lower than the first frequency point and the first cell in the duration time;
when the signal quality of the cell does not meet the requirement of the power dynamic range, keeping the cell priority of a third cell with the frequency point higher than the first frequency point unchanged
2. The cell-camping method of claim 1, further comprising:
and restoring the cell priority of the first cell and the second cell after the duration is exceeded.
3. The cell-camping method of any of claims 1 to 2, wherein the cell signal quality comprises: the Reference Signal Received Power (RSRP) of the cell and/or the Reference Signal Received Quality (RSRQ) of the cell; after the step of obtaining the signal quality of the cell, the method further comprises the following steps:
determining uplink transmitting power according to the RSRP and/or the RSRQ;
and if the uplink transmitting power is smaller than the minimum transmitting power of the IAB node, determining that the signal quality of the cell does not meet the requirement of the power dynamic range, wherein the minimum transmitting power is determined according to the power dynamic range of the IAB node.
4. The cell camping method according to any of claims 1 to 2, wherein the step of selecting a camping cell according to the adjusted cell priority comprises one of:
selecting a resident cell in a cell selection process according to the adjusted cell priority and a judgment criterion of a proper cell;
and selecting a resident cell in the cell reselection process according to the adjusted cell priority and the cell reselection criterion.
5. The cell-camping method of claim 1, further comprising:
and reporting the power dynamic range to a network node under the condition of being in a connection state.
6. The method of claim 5, further comprising, after the step of reporting the power dynamic range to a higher level network node:
receiving priority adjustment indication information, wherein the priority adjustment indication information is used for indicating: and in the duration, reducing the frequency point to be equal to or lower than the cell priority of the fourth cell of the current resident cell of the IAB node and the current resident cell.
7. The cell-camping method of claim 6, further comprising, after the step of receiving the priority adjustment indication information:
and receiving priority restoration instruction information.
8. A cell processing method applied to a network node, comprising:
receiving the power dynamic range of the IAB node sent by the integrated access backhaul IAB node in a connection state;
when the signal quality of the cell where the IAB node currently resides does not meet the requirement of the power dynamic range, adjusting the cell priority of the corresponding cell, or redirecting the IAB node to other cells with frequency points higher than the cell where the IAB node currently resides;
Wherein, the step of adjusting the cell priority of the corresponding cell includes:
in the duration time, reducing the frequency point to be equal to or lower than the cell priority of a fourth cell of the current resident cell of the IAB node and the cell priority of the current resident cell;
and when the signal quality of the cell does not meet the requirement of the power dynamic range, keeping the cell priority of a third cell with the frequency point higher than the first frequency point unchanged.
9. The cell processing method according to claim 8, further comprising:
sending priority adjustment indication information to the IAB node, wherein the priority adjustment indication information is used for indicating: and in the duration, reducing the frequency point to be equal to or lower than the cell priority of the fourth cell of the current resident cell of the IAB node and the current resident cell.
10. The cell processing method according to claim 8, wherein after the step of reducing the cell priority of the fourth cell of the current camping cell of the IAB node and the current camping cell, further comprising:
and sending priority restoration instruction information to the IAB node.
11. The cell processing method according to claim 8, further comprising, after the step of receiving the power dynamic range of the IAB node transmitted by the integrated access backhaul IAB node in a connected state:
According to a power control algorithm, calculating the uplink transmitting power of the IAB node;
and if the uplink transmitting power is smaller than the minimum transmitting power of the IAB node, determining that the signal quality of the cell does not meet the requirement of the power dynamic range, wherein the minimum transmitting power is determined according to the power dynamic range of the IAB node.
12. A cell residence apparatus for use in an integrated access backhaul, IAB, node, comprising:
the acquisition module is used for acquiring the signal quality of the cell;
an adjusting module, configured to adjust a cell priority of a corresponding cell when the cell signal quality does not meet the requirement of the power dynamic range of the IAB node;
the selection module is used for selecting a resident cell according to the adjusted cell priority;
the adjustment module includes:
an adjusting sub-module, configured to reduce, in a duration, a cell priority of a second cell and a cell of a first cell, where the frequency point is equal to or lower than the first frequency point, when a cell signal quality of the first cell of the first frequency point does not meet a requirement of the power dynamic range;
and the maintaining module is used for maintaining the cell priority of a third cell with the frequency point higher than the first frequency point unchanged when the cell signal quality does not meet the requirement of the power dynamic range.
13. The cell-camping apparatus of claim 12, further comprising:
and the recovery module is used for recovering the cell priorities of the first cell and the second cell after the preset duration time is exceeded.
14. The cell-camping apparatus of any one of claims 12 to 13, wherein the cell signal quality comprises: the Reference Signal Received Power (RSRP) of the cell and/or the Reference Signal Received Quality (RSRQ) of the cell; the apparatus further comprises:
a first determining module, configured to determine uplink transmit power according to the RSRP and/or the RSRQ;
and the second determining module is used for determining that the signal quality of the cell does not meet the requirement of the power dynamic range if the uplink transmitting power is smaller than the minimum transmitting power of the IAB node, wherein the minimum transmitting power is determined according to the power dynamic range of the IAB node.
15. The cell-camping apparatus of any of claims 12 to 13, wherein the selection module comprises one of:
the first selection sub-module is used for selecting resident cells in the cell selection process according to the adjusted cell priority and the judgment criterion of the proper cells;
And the second selection sub-module is used for selecting a resident cell in the cell reselection process according to the adjusted cell priority and the cell reselection criterion.
16. The cell-camping apparatus of claim 12, further comprising:
and the reporting module is used for reporting the power dynamic range to the network node under the condition of being in a connection state.
17. The cell-camping apparatus of claim 16, further comprising:
the first receiving module is used for receiving priority adjustment indication information, and the priority adjustment indication information is used for indicating: and in the duration, reducing the frequency point to be equal to or lower than the cell priority of the fourth cell of the current resident cell of the IAB node and the current resident cell.
18. The cell-camping apparatus of claim 17, further comprising:
and the second receiving module is used for receiving the priority restoration instruction information.
19. A cell processing apparatus for use in a network node, comprising:
the receiving module is used for receiving the power dynamic range of the IAB node sent by the integrated access backhaul IAB node in a connection state;
the processing module is used for adjusting the cell priority of the corresponding cell or redirecting the IAB node to other cells with frequency points higher than the current residence cell when the cell signal quality of the current residence cell of the IAB node does not meet the requirement of the power dynamic range;
The processing module comprises:
a processing sub-module, configured to reduce, in a duration, a frequency point equal to or lower than a fourth cell of the current camping cell of the IAB node and a cell priority of the current camping cell;
and when the signal quality of the cell does not meet the requirement of the power dynamic range, keeping the cell priority of a third cell with the frequency point higher than the first frequency point unchanged.
20. The cell processing apparatus of claim 19, further comprising:
the first sending module is configured to send priority adjustment indication information to the IAB node, where the priority adjustment indication information is used to indicate: and in the duration, reducing the frequency point to be equal to or lower than the cell priority of the fourth cell of the current resident cell of the IAB node and the current resident cell.
21. The cell processing apparatus of claim 19, further comprising:
and the second sending module is used for sending priority restoration instruction information to the IAB node.
22. The cell processing apparatus of claim 19, further comprising:
the calculation module is used for calculating the uplink transmitting power of the IAB node according to a power control algorithm;
And the determining module is used for determining that the signal quality of the cell does not meet the requirement of the power dynamic range if the uplink transmitting power is smaller than the minimum transmitting power of the IAB node, wherein the minimum transmitting power is determined according to the power dynamic range of the IAB node.
23. A network device, comprising: a processor; a memory coupled to the processor, and a transceiver coupled to the processor; wherein the processor is configured to invoke and execute the programs and data stored in the memory, to implement the steps of the cell residence method according to any one of claims 1 to 7, or to implement the steps of the cell processing method according to any one of claims 8 to 11.
24. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the cell camping method according to any of claims 1 to 7 or the steps of the cell handling method according to any of claims 8 to 11.
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| CN107404741A (en) * | 2017-09-26 | 2017-11-28 | 深圳市金立通信设备有限公司 | A kind of cell selecting method, terminal and computer-readable recording medium |
| CN108738096A (en) * | 2017-04-18 | 2018-11-02 | 维沃移动通信有限公司 | A kind of method, terminal, base station and the core network entity of cell selection and gravity treatment |
| WO2019196670A1 (en) * | 2018-04-10 | 2019-10-17 | 奇酷互联网络科技（深圳）有限公司 | Method and apparatus for random access control, and mobile terminal |
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| WO2014137127A1 (en) * | 2013-03-04 | 2014-09-12 | 엘지전자 주식회사 | Cell reselection method and user equipment therefor |
| WO2015069064A1 (en) * | 2013-11-07 | 2015-05-14 | 엘지전자 주식회사 | Method for re-selecting cell by user equipment and user equipment using same |
| WO2016163545A1 (en) * | 2015-04-10 | 2016-10-13 | 京セラ株式会社 | User terminal and wireless base station |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108738096A (en) * | 2017-04-18 | 2018-11-02 | 维沃移动通信有限公司 | A kind of method, terminal, base station and the core network entity of cell selection and gravity treatment |
| CN107404741A (en) * | 2017-09-26 | 2017-11-28 | 深圳市金立通信设备有限公司 | A kind of cell selecting method, terminal and computer-readable recording medium |
| WO2019196670A1 (en) * | 2018-04-10 | 2019-10-17 | 奇酷互联网络科技（深圳）有限公司 | Method and apparatus for random access control, and mobile terminal |
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