CN112533254A - Cell load balancing method, device and network equipment - Google Patents
Cell load balancing method, device and network equipment Download PDFInfo
- Publication number
- CN112533254A CN112533254A CN201910875261.0A CN201910875261A CN112533254A CN 112533254 A CN112533254 A CN 112533254A CN 201910875261 A CN201910875261 A CN 201910875261A CN 112533254 A CN112533254 A CN 112533254A
- Authority
- CN
- China
- Prior art keywords
- information
- network device
- request
- resource
- terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 74
- 230000004044 response Effects 0.000 claims description 17
- 230000001174 ascending effect Effects 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 230000003993 interaction Effects 0.000 description 5
- 230000000737 periodic effect Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- 101150071746 Pbsn gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0268—Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
-
- 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
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
-
- 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
- H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a load balancing method, a load balancing device and network equipment. The cell load balancing method of the first network equipment side comprises the following steps: sending resource request information to the second network equipment; and receiving the available resource information sent by the second network equipment. The scheme of the invention helps the first network equipment to switch the terminal to the target cell of the proper second network equipment by interacting the potential available resource information between the first network equipment and the second network equipment, thereby not only effectively realizing load balancing, but also ensuring the service performance of the terminal.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a load balancing method, an apparatus, and a network device.
Background
In the prior art, when the number of users in a serving cell is too large, the load of the cell is too high, and both the cell capacity and the quality of service (QoS) are affected. In order to ensure user experience and effective utilization of wireless resources, the load of a high-load cell needs to be shared to a neighboring cell with a low load in time.
To realize efficient and high-quality load balancing, an effective load information interaction process between cells is indispensable, and the main flow is shown in fig. 1:
step 1, when a source cell (base station 1) evaluates that the load of the cell is too high, triggering load balancing, and the base station 1 initiating a RESOURCE state REQUEST (RESOURCE STATUS REQUEST) to an adjacent cell (base station 2);
step 2, the neighboring cell transmits the self load information to the source cell through an X2/Xn port feedback RESOURCE state RESPONSE (RESOURCE STATUS RESPONSE) in the cell or between the base stations;
step 3, the neighboring cell periodically sends a RESOURCE state UPDATE (RESOURCE STATUS UPDATE) signaling to the source cell;
the information may include physical resource block PRB utilization rate (PRB Periodic), transmission bandwidth Load (TNL Load Ind Periodic), hardware resource Load (HW Load Ind Periodic), cell remaining Capacity period (Composite Available Capacity Periodic), and the like.
Step 4, the source cell selects a proper adjacent cell as a target cell according to the collected information;
step 5, selecting a proper user in the source cell, for example, selecting the user based on the service type of the quality of service (QCI), the size of PRB occupied by the user, the position of the user and other information; and the user is switched and transferred to the corresponding target cell.
In LTE, the utilization rate of PRBs is used to evaluate the load of a cell, and due to the introduction of large-scale antennas (massive MIMO), multiple users can multiplex cell resources, and if the cell load of LTE is not enough to measure the capacity of a cell to receive new UEs. The resource utilization information at the cell level cannot really measure the capacity of the cell and cannot effectively perform load balancing.
Disclosure of Invention
The invention provides a load balancing method, a load balancing device and network equipment. The problem that load balancing cannot be effectively carried out under the condition that multiple terminals can multiplex cell resources in the prior art is solved.
To solve the above technical problem, an embodiment of the present invention provides the following solutions:
a cell load balancing method is applied to a first network device, and comprises the following steps:
sending resource request information to the second network equipment;
and receiving the available resource information sent by the second network equipment.
Optionally, the resource request information is carried in a report characteristic field of an interface establishment request, an interface update request, a cell switching request, a resource status request, or a resource status request of the first network device and the second network device.
Optionally, the resource request information carries at least one of the following: an indication of a type of beam information that the first network device wishes to acquire; type information of beam quality measured by the terminal.
Optionally, the available resource information includes at least one of: location range information of the terminal; type information of the beam; identification information of the beam; a quality requirement threshold of the beam; specific bearer capability information in each location or beam direction.
Optionally, the available resource information further includes a resource type indication, where the resource type includes: reusable resources or directly switchable resources.
Optionally, the available resource information is carried in an interface establishment request acknowledge message, an interface update request acknowledge message, a cell handover request acknowledge message, or a resource status response message of the first network device and the second network device.
Optionally, after receiving the available resource information for load balancing sent by the second network device, the method further includes: selecting a terminal meeting a switching condition according to a measurement report reported by the terminal and the available resource information;
and sending a switching request command to the second network equipment, and switching the selected terminal meeting the switching condition to a cell of the second network equipment.
Optionally, the handover request command carries at least one of the following: the beam mark measured by the terminal for switching; the quality of the beam measured by the terminal performing the handover; arranging the beam identifications according to the ascending order or the descending order of the quality; specific location information of the terminal performing the handover; a quality of service type indication of the traffic of the terminal performing the handover.
The embodiment of the invention provides a cell load balancing method which is applied to second network equipment, and the method comprises the following steps:
receiving resource request information sent by first network equipment;
and sending the available resource information to the first network equipment.
Optionally, the resource request information is carried in a report characteristic field of an interface establishment request, an interface update request, a cell switching request, a resource status request, or a resource status request of the first network device and the second network device.
Optionally, the resource request information carries at least one of the following: an indication of a type of beam information that the first network device wishes to acquire; type information of beam quality measured by the terminal.
Optionally, the available resource information includes at least one of: location range information of the terminal; type information of the beam; identification information of the beam; a quality requirement threshold of the beam; specific bearer capability information in each location or beam direction.
Optionally, the available resource information includes a resource type indication, and the resource type includes: reusable resources or directly switchable resources.
Optionally, the available resource information is carried in an interface establishment request acknowledge message, an interface update request acknowledge message, a cell handover request acknowledge message, or a resource status response message of the first network device and the second network device.
Optionally, after sending the available resource information for load balancing to the first network device, the method further includes: and receiving a switching request command sent by the first network equipment, wherein the switching request command is used for switching the terminal meeting the switching condition selected by the first network equipment to a cell of the second network equipment.
Optionally, the handover request command carries at least one of the following:
the beam mark measured by the terminal for switching;
the quality of the beam measured by the terminal performing the handover;
arranging the beam identifications according to the ascending order or the descending order of the quality;
specific location information of the terminal performing the handover;
a quality of service type indication of the traffic of the terminal performing the handover.
An embodiment of the present invention further provides a cell load balancing apparatus, applied to a first network device, including: the receiving and sending module is used for sending the resource request information to the second network equipment; and receiving the available resource information sent by the second network equipment.
Optionally, the resource request information is carried in a report characteristic field of an interface establishment request, an interface update request, a cell switching request, a resource status request, or a resource status request of the first network device and the second network device.
Optionally, the resource request information carries at least one of the following: an indication of a type of beam information that the first network device wishes to acquire; type information of beam quality measured by the terminal.
Optionally, the available resource information includes at least one of: location range information of the terminal; type information of the beam; identification information of the beam; a quality requirement threshold of the beam; specific bearer capability information in each location or beam direction.
Optionally, the available resource information further includes a resource type indication, where the resource type includes: reusable resources or directly switchable resources.
Optionally, the available resource information is carried in an interface establishment request acknowledge message, an interface update request acknowledge message, a cell handover request acknowledge message, or a resource status response message of the first network device and the second network device.
Optionally, the cell load balancing apparatus further includes:
the processing module is used for selecting the terminal meeting the switching condition according to the measurement report reported by the terminal and the available resource information;
and the transceiver module sends a switching request command to the second network equipment, and switches the selected terminal meeting the switching condition to a cell of the second network equipment.
Optionally, the handover request command carries at least one of the following: the beam mark measured by the terminal for switching; the quality of the beam measured by the terminal performing the handover; arranging the beam identifications according to the ascending order or the descending order of the quality; specific location information of the terminal performing the handover; a quality of service type indication of the traffic of the terminal performing the handover.
An embodiment of the present invention further provides a network device, including:
a transceiver for transmitting resource request information to a second network device; and receiving the available resource information sent by the second network equipment.
Optionally, the resource request information is carried in a report characteristic field of an interface establishment request, an interface update request, a cell switching request, a resource status request, or a resource status request of the first network device and the second network device.
Optionally, the resource request information carries at least one of the following: an indication of a type of beam information that the first network device wishes to acquire; type information of beam quality measured by the terminal.
Optionally, the available resource information includes at least one of: location range information of the terminal; type information of the beam, identification information of the beam; a quality requirement threshold of the beam; specific bearer capability information in each location or beam direction.
Optionally, the available resource information further includes a resource type indication, where the resource type includes: reusable resources or directly switchable resources.
Optionally, the available resource information is carried in an interface establishment request acknowledge message, an interface update request acknowledge message, a cell handover request acknowledge message, or a resource status response message of the first network device and the second network device.
Optionally, the network device further includes: the processor is used for selecting the terminal meeting the switching condition according to the measurement report reported by the terminal and the available resource information;
and the transceiver sends a switching request command to the second network equipment, and switches the selected terminal meeting the switching condition to a cell of the second network equipment.
Optionally, the handover request command carries at least one of the following: the beam mark measured by the terminal for switching; the quality of the beam measured by the terminal performing the handover; arranging the beam identifications according to the ascending order or the descending order of the quality; specific location information of the terminal performing the handover; a quality of service type indication of the traffic of the terminal performing the handover.
The embodiment of the present invention further provides a cell load balancing apparatus, applied to a second network device, including: the receiving and sending module is used for receiving resource request information sent by first network equipment; and sending the available resource information to the first network equipment.
Optionally, the resource request information is carried in a report characteristic field of an interface establishment request, an interface update request, a cell switching request, a resource status request, or a resource status request of the first network device and the second network device.
Optionally, the resource request information carries at least one of the following: an indication of a type of beam information that the first network device wishes to acquire; type information of beam quality measured by the terminal.
Optionally, the available resource information includes at least one of: location range information of the terminal; type information of the beam; identification information of the beam; a quality requirement threshold of the beam; specific bearer capability information in each location or beam direction.
Optionally, the available resource information includes a resource type indication, and the resource type includes: reusable resources or directly switchable resources.
Optionally, the available resource information is carried in an interface establishment request acknowledge message, an interface update request acknowledge message, a cell handover request acknowledge message, or a resource status response message of the first network device and the second network device.
Optionally, the transceiver module is further configured to receive a handover request command sent by the first network device, where the handover request command is used to handover a terminal that meets a handover condition and is selected by the first network device to a cell of the second network device.
Optionally, the handover request command carries at least one of the following: the beam mark measured by the terminal for switching; the quality of the beam measured by the terminal performing the handover; arranging the beam identifications according to the ascending order or the descending order of the quality; specific location information of the terminal performing the handover; a quality of service type indication of the traffic of the terminal performing the handover.
An embodiment of the present invention further provides a network device, including:
the transceiver is used for receiving resource request information sent by the first network equipment; and sending the available resource information to the first network equipment.
Optionally, the resource request information is carried in a report characteristic field of an interface establishment request, an interface update request, a cell switching request, a resource status request, or a resource status request of the first network device and the second network device.
Optionally, the resource request information carries at least one of the following: an indication of a type of beam information that the first network device wishes to acquire; type information of beam quality measured by the terminal.
Optionally, the available resource information includes at least one of: location range information of the terminal; type information of the beam; identification information of the beam; a quality requirement threshold of the beam; specific bearer capability information in each location or beam direction.
Optionally, the available resource information includes a resource type indication, and the resource type includes: reusable resources or directly switchable resources.
Optionally, the available resource information is carried in an interface establishment request acknowledge message, an interface update request acknowledge message, a cell handover request acknowledge message, or a resource status response message of the first network device and the second network device.
Optionally, the transceiver is further configured to receive a handover request command sent by the first network device, where the handover request command is used to handover a terminal that meets a handover condition and is selected by the first network device to a cell of the second network device.
Optionally, the handover request command carries at least one of the following: the beam mark measured by the terminal for switching; the quality of the beam measured by the terminal performing the handover; arranging the beam identifications according to the ascending order or the descending order of the quality; specific location information of the terminal performing the handover; a quality of service type indication of the traffic of the terminal performing the handover.
An embodiment of the present invention further provides a communication device, including: a processor, a memory storing a computer program which, when executed by the processor, performs the method as described above.
Embodiments of the present invention also provide a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the method as described above.
The scheme of the invention at least comprises the following beneficial effects:
according to the scheme of the invention, the resource request information for load balancing is sent to the second network equipment; and receiving available resource information for load balancing sent by the second network equipment, and interacting potential available resource information between the first network equipment and the second network equipment to help the first network equipment to switch the terminal to a proper target cell of the second network equipment, thereby not only effectively realizing load balancing, but also ensuring the service performance of the terminal.
Drawings
Fig. 1 is a schematic diagram illustrating an existing process for performing effective load information interaction between cells;
fig. 2 is a schematic flow chart of a cell load balancing method at a first network device side according to the present invention;
fig. 3 is a schematic flowchart of a cell load balancing method at a second network device side according to the present invention;
fig. 4 is a schematic diagram of a network device according to the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As shown in fig. 2, an embodiment of the present invention provides a cell load balancing method, which is applied to a first network device, and the method includes:
step 22, receiving the available resource information sent by the second network device.
This embodiment of the invention is achieved by sending resource request information for load balancing to a second network device; and receiving available resource information for load balancing sent by the second network equipment, and interacting potential available resource information between the first network equipment and the second network equipment to help the first network equipment to switch the terminal to a proper target cell of the second network equipment, thereby not only effectively realizing load balancing, but also ensuring the service performance of the terminal.
In an optional embodiment of the present invention, the resource request information is carried in a report characteristic field of an interface establishment request, an interface update request, a cell handover request, a resource status request, or a resource status request of the first network device and the second network device. That is, the resource request message may be embedded into another flow, for example, embedded into an interface establishment flow between the first network device and the second network device, and carried in the interface establishment request; or can be embedded into an interface updating flow between the first network equipment and the second network equipment and carried in the interface updating request; or can be embedded into the cell switching process and carried in the cell switching request; of course, the RESOURCE REQUEST information for load balancing may be implemented independently in the load balancing process, such as being carried in the RESOURCE STATUS REQUEST (RESOURCE STATUS REQUEST) or in the Report Characteristics (Report Characteristics) field of the RESOURCE STATUS REQUEST (RESOURCE STATUS REQUEST), for example, 11 bits are added to indicate that RESOURCEs are needed or load balancing is needed.
In an optional embodiment of the present invention, the resource request information carries at least one of the following:
an indication of a type of beam information (e.g., Synchronization Signal Block (SSB), channel state information reference signal (CSI-RS), or SSB and CSI-RS) that the first network device desires to acquire;
the type information of the beam quality measured by the terminal, for example, Reference Signal Received Power (RSRP) or Reference Signal Received Quality (RSRQ) or signal to interference plus noise ratio (SINR), i.e., the quality type of the beam measured by the terminal, or the first network device configures the beam measured by the terminal.
In an optional embodiment of the present invention, the available resource information includes at least one of:
location range information of the terminal;
type information of the beam; such as SSB and/or CSI-RS;
identification information of beams, that is, terminals capable of measuring the beams can be or are preferentially switched over;
a quality requirement threshold of the beam, which may be combined with the foregoing beam types, such as an RSRP or RSRQ or SINR threshold of an SSB, an RSRP or RSRQ or SINR threshold of a CSI-RS, and a terminal that can measure a beam transmitted by the second network device and has a quality exceeding the threshold may or may preferentially be switched over;
specific bearer capability information in each location or beam direction.
The second network device determines available resource information based on information such as distribution of terminals in the current cell and utilization of resources, and sends the available resource information to the first network device, for example, the available resource information may be location range information of the terminal, type information of a beam, beam ID (identification) information, and indicates that the first network device is expected to switch the location range preferentially or only or a terminal capable of measuring a beam with the beam ID comes, so that the multiplexing opportunity of the terminal in the target cell of the second network device can be increased. Here, the beam ID may be an SSB ID or a CSI-RS ID.
The available resource information sent by the second network device to the first network device may further include a quality requirement threshold of the beam, such as an RSRP threshold, an RSRQ threshold, or an SINR threshold, indicating that the terminal may handover to the target cell of the second network device only when the quality of the beam of the ID measured by the terminal exceeds the corresponding threshold.
The information about available resources sent by the second network device to the first network device may further include: specific bearer capability information in each location or beam direction, as may be carried or accommodated: the number of terminals, or the number of terminals of a certain QCI, e.g. QCI 5, or the number of UEs of a certain 5QI, etc.
In an optional embodiment of the present invention, the available resource information further includes a resource type indication, where the resource type includes: reusable resources or directly switchable resources. For example, the second network device informs the first network device of which terminal location ranges, which beam IDs of the second network device can be multiplexed or directly switched over through the available resource information. Therefore, after the first network device knows the resource type indication, the first network device can decide to switch the selected terminal meeting the switching condition to the target cell of the second network device according to the resource type indication, and reuse the relevant resources with the terminal of the target cell, or directly switch the terminal meeting the switching condition and needing to be switched to the target cell of the second network device. Therefore, the switching efficiency of the terminal can be improved, and the system load can be reduced.
In an optional embodiment of the present invention, corresponding to the above-mentioned resource request information embedding process, the available resource information is carried in an interface establishment request acknowledge message, an interface update request acknowledge message, a cell handover request acknowledge message, or a resource status response message of the first network device and the second network device. For example, if the resource request information is carried in the interface establishment request between the first network device and the second network device, the available resource information may be carried in the interface establishment request acknowledgement message between the first network device and the second network device; similarly, if the resource request information is carried in the interface update request of the first network device and the second network device, the available resource information may be carried in the interface update request acknowledgement message of the first network device and the second network device; if the resource request information is carried in the cell switching request of the first network device and the second network device, the available resource information can be carried in the cell switching request confirmation message of the first network device and the second network device; if the resource request information is carried in the resource status requests of the first network device and the second network device, the available resource information may be carried in the resource status response messages of the first network device and the second network device.
In an optional embodiment of the present invention, on the basis of the step 21 and the step 22, after the step 22, the method may further include:
step 23, selecting a terminal meeting the switching condition according to the measurement report reported by the terminal and the available resource information;
and step 24, sending a switching request command to the second network device, and switching the selected terminal meeting the switching condition to the cell of the second network device.
Here, the first network device receives a measurement report reported by the terminal, and may obtain a state of the terminal from the measurement report, for example, a beam measured by the terminal, a beam quality measured by the terminal, location information of the terminal, and a qos type indicator QCI of the terminal; and determining the terminals meeting the switching conditions according to the information and the available resource information fed back by the second network equipment, selecting the terminals needing to be switched from the terminals meeting the switching conditions, and switching to the target cell of the second network equipment.
Optionally, the handover request command carries at least one of the following:
the beam identifier measured by the terminal performing the handover, such as an SSB ID or a CSI-RS ID;
the quality of the beam measured by the terminal performing the handover, such as RSRP or RSRQ or SINR of the SSB or CSI-RS;
arranging the beam identifications according to the ascending order or the descending order of the quality;
specific location information of the terminal performing the handover;
the service quality type of the service of the terminal performing handover indicates QCI or 5QI information.
Further, the first network device sends a handover command to the terminal after obtaining a handover confirmation of the second network device, and the terminal may handover to the target cell of the second network device according to the handover command.
The above embodiments of the present invention use the above information, such as the location range information of the terminal and the beam related information, through interaction (including periodic interaction or interaction on demand) between network devices (such as base stations), where the beam related information may include the type information of the beam; such as SSB and/or CSI-RS; identification information of beams, that is, terminals capable of measuring the beams can be or are preferentially switched over; a quality requirement threshold of the beam, which may be combined with the foregoing beam types, such as an RSRP or RSRQ or SINR threshold of an SSB, an RSRP or RSRQ or SINR threshold of a CSI-RS, and a terminal that can measure a beam transmitted by the second network device and has a quality exceeding the threshold may or may preferentially be switched over; specific bearer capability information in each location or beam direction, etc. The method and the device can help the target base station (such as the second network equipment) and the source base station (such as the first network equipment) to screen a proper switching terminal, can effectively perform load balancing under the condition that multiple terminals can multiplex cell resources, and can improve the capacity of the target cell and the service experience of a user by increasing the opportunity of resource multiplexing.
As shown in fig. 3, an embodiment of the present invention provides a cell load balancing method, which is applied to a second network device, and the method includes:
Optionally, the resource request information is carried in a report characteristic field of an interface establishment request, an interface update request, a cell switching request, a resource status request, or a resource status request of the first network device and the second network device.
Optionally, the resource request information carries at least one of the following: an indication of a type of beam information that the first network device wishes to acquire; type information of beam quality measured by the terminal.
Optionally, the available resource information includes at least one of: location range information of the terminal; type information of the beam; identification information of the beam; a quality requirement threshold of the beam; specific bearer capability information in each location or beam direction.
Optionally, the available resource information includes a resource type indication, and the resource type includes: reusable resources or directly switchable resources.
Optionally, the available resource information is carried in an interface establishment request acknowledge message, an interface update request acknowledge message, a cell handover request acknowledge message, or a resource status response message of the first network device and the second network device.
Optionally, after sending the available resource information for load balancing to the first network device, the method further includes: and receiving a switching request command sent by the first network equipment, wherein the switching request command is used for switching the terminal meeting the switching condition selected by the first network equipment to a cell of the second network equipment.
Optionally, the handover request command carries at least one of the following:
the beam mark measured by the terminal for switching;
the quality of the beam measured by the terminal performing the handover;
arranging the beam identifications according to the ascending order or the descending order of the quality;
specific location information of the terminal performing the handover;
a quality of service type indication of the traffic of the terminal performing the handover.
The embodiment is a method on the second network device side corresponding to the method shown in fig. 2, and all implementation manners in the embodiment are applicable to the embodiment, and the same technical effect can be achieved.
An embodiment of the present invention further provides a cell load balancing apparatus, applied to a first network device, including: the receiving and sending module is used for sending the resource request information to the second network equipment; and receiving the available resource information sent by the second network equipment.
Optionally, the resource request information is carried in a report characteristic field of an interface establishment request, an interface update request, a cell switching request, a resource status request, or a resource status request of the first network device and the second network device.
Optionally, the resource request information carries at least one of the following: an indication of a type of beam information that the first network device wishes to acquire; type information of beam quality measured by the terminal.
Optionally, the available resource information includes at least one of: location range information of the terminal; type information of the beam; identification information of the beam; a quality requirement threshold of the beam; specific bearer capability information in each location or beam direction.
Optionally, the available resource information further includes a resource type indication, where the resource type includes: reusable resources or directly switchable resources.
Optionally, the available resource information is carried in an interface establishment request acknowledge message, an interface update request acknowledge message, a cell handover request acknowledge message, or a resource status response message of the first network device and the second network device.
Optionally, the cell load balancing apparatus further includes:
the processing module is used for selecting the terminal meeting the switching condition according to the measurement report reported by the terminal and the available resource information;
and the transceiver module sends a switching request command to the second network equipment, and switches the selected terminal meeting the switching condition to a cell of the second network equipment.
Optionally, the handover request command carries at least one of the following: the beam mark measured by the terminal for switching; the quality of the beam measured by the terminal performing the handover; arranging the beam identifications according to the ascending order or the descending order of the quality; specific location information of the terminal performing the handover; a quality of service type indication of the traffic of the terminal performing the handover.
It should be noted that the apparatus is an apparatus corresponding to the method shown in fig. 2, and all the implementations in the above method embodiment are applicable to the embodiment of the apparatus, and the same technical effects can be achieved.
As shown in fig. 4, an embodiment of the present invention further provides a network device 40, which may be the first network device described above, including:
a transceiver 41 for transmitting resource request information to the second network device; and receiving the available resource information sent by the second network equipment.
Optionally, the resource request information is carried in a report characteristic field of an interface establishment request, an interface update request, a cell switching request, a resource status request, or a resource status request of the first network device and the second network device.
Optionally, the resource request information carries at least one of the following: an indication of a type of beam information that the first network device wishes to acquire; type information of beam quality measured by the terminal.
Optionally, the available resource information includes at least one of: location range information of the terminal; type information of the beam; identification information of the beam; a quality requirement threshold of the beam; specific bearer capability information in each location or beam direction.
Optionally, the available resource information further includes a resource type indication, where the resource type includes: reusable resources or directly switchable resources.
Optionally, the available resource information is carried in an interface establishment request acknowledge message, an interface update request acknowledge message, a cell handover request acknowledge message, or a resource status response message of the first network device and the second network device.
Optionally, the network device further includes: a processor 42, configured to select a terminal that meets a handover condition according to a measurement report reported by the terminal and the available resource information;
the transceiver 41 sends a handover request command to the second network device, and switches the selected terminal meeting the handover condition to the cell of the second network device.
Optionally, the handover request command carries at least one of the following: the beam mark measured by the terminal for switching; the quality of the beam measured by the terminal performing the handover; arranging the beam identifications according to the ascending order or the descending order of the quality; specific location information of the terminal performing the handover; a quality of service type indication of the traffic of the terminal performing the handover.
It should be noted that the network device is a network device corresponding to the method shown in fig. 2, and all implementation manners in the method embodiment are applicable to the embodiment of the apparatus, and the same technical effect can be achieved. The network device may further include: a memory 43; the transceiver 41 and the processor 42, and the transceiver 41 and the memory 43 may be connected through a bus interface, and the functions of the transceiver 41 may be implemented by the processor 42, and the functions of the processor 42 may also be implemented by the transceiver 41.
The embodiment of the present invention further provides a cell load balancing apparatus, applied to a second network device, including: the receiving and sending module is used for receiving resource request information sent by first network equipment; and sending the available resource information to the first network equipment.
Optionally, the resource request information is carried in a report characteristic field of an interface establishment request, an interface update request, a cell switching request, a resource status request, or a resource status request of the first network device and the second network device.
Optionally, the resource request information carries at least one of the following: an indication of a type of beam information that the first network device wishes to acquire; type information of beam quality measured by the terminal.
Optionally, the available resource information includes at least one of: location range information of the terminal; type information of the beam; identification information of the beam; a quality requirement threshold of the beam; specific bearer capability information in each location or beam direction.
Optionally, the available resource information includes a resource type indication, and the resource type includes: reusable resources or directly switchable resources.
Optionally, the available resource information is carried in an interface establishment request acknowledge message, an interface update request acknowledge message, a cell handover request acknowledge message, or a resource status response message of the first network device and the second network device.
Optionally, the transceiver module is further configured to receive a handover request command sent by the first network device, where the handover request command is used to handover a terminal that meets a handover condition and is selected by the first network device to a cell of the second network device.
Optionally, the handover request command carries at least one of the following: the beam mark measured by the terminal for switching; the quality of the beam measured by the terminal performing the handover; arranging the beam identifications according to the ascending order or the descending order of the quality; specific location information of the terminal performing the handover; a quality of service type indication of the traffic of the terminal performing the handover.
It should be noted that the apparatus is an apparatus corresponding to the method shown in fig. 3, and all the implementations in the above method embodiment are applicable to the embodiment of the apparatus, and the same technical effects can be achieved.
An embodiment of the present invention further provides a network device, where the network device may be the second network device, and an architecture of the second network device may be the same as or similar to an architecture of the first network device, and the network device includes:
the transceiver is used for receiving resource request information sent by the first network equipment; and sending the available resource information to the first network equipment.
Optionally, the resource request information is carried in a report characteristic field of an interface establishment request, an interface update request, a cell switching request, a resource status request, or a resource status request of the first network device and the second network device.
Optionally, the resource request information carries at least one of the following: an indication of a type of beam information that the first network device wishes to acquire; type information of beam quality measured by the terminal.
Optionally, the available resource information includes at least one of: location range information of the terminal; type information of the beam; identification information of the beam; a quality requirement threshold of the beam; specific bearer capability information in each location or beam direction.
Optionally, the available resource information includes a resource type indication, and the resource type includes: reusable resources or directly switchable resources.
Optionally, the available resource information is carried in an interface establishment request acknowledge message, an interface update request acknowledge message, a cell handover request acknowledge message, or a resource status response message of the first network device and the second network device.
Optionally, the transceiver is further configured to receive a handover request command sent by the first network device, where the handover request command is used to handover a terminal that meets a handover condition and is selected by the first network device to a cell of the second network device.
Optionally, the handover request command carries at least one of the following: the beam mark measured by the terminal for switching; the quality of the beam measured by the terminal performing the handover; arranging the beam identifications according to the ascending order or the descending order of the quality; specific location information of the terminal performing the handover; a quality of service type indication of the traffic of the terminal performing the handover.
It should be noted that the network device is a network device corresponding to the method shown in fig. 3, and all implementation manners in the method embodiment are applicable to the embodiment of the apparatus, and the same technical effect can be achieved. The terminal may further include: a memory; the transceiver and the processor, and the transceiver and the memory can be connected through a bus interface, the functions of the transceiver can be realized by the processor, and the functions of the processor can also be realized by the transceiver.
An embodiment of the present invention further provides a communication device, including: a processor, a memory storing a computer program which, when executed by the processor, performs the method as described above.
Embodiments of the present invention also provide a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the method as described above.
According to the embodiment of the invention, the information of potential reusable resources is interacted between the cells or the base stations, the source base station is helped to switch the terminal to the appropriate target cell, so that the load balance can be effectively realized, the capacity of the target cell can be improved by increasing the opportunity of resource reuse, the service performance of the terminal can be ensured, and the service experience of a user can be improved.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
Furthermore, it is to be noted that in the device and method of the invention, it is obvious that the individual components or steps can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of performing the series of processes described above may naturally be performed chronologically in the order described, but need not necessarily be performed chronologically, and some steps may be performed in parallel or independently of each other. It will be understood by those skilled in the art that all or any of the steps or elements of the method and apparatus of the present invention may be implemented in any computing device (including processors, storage media, etc.) or network of computing devices, in hardware, firmware, software, or any combination thereof, which can be implemented by those skilled in the art using their basic programming skills after reading the description of the present invention.
Thus, the objects of the invention may also be achieved by running a program or a set of programs on any computing device. The computing device may be a general purpose device as is well known. The object of the invention is thus also achieved solely by providing a program product comprising program code for implementing the method or the 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 to be understood that the storage medium may be any known storage medium or any storage medium developed in the future. It is further noted that in the apparatus and method of the present invention, it is apparent that each component or step can be decomposed and/or recombined. These decompositions and/or recombinations are to be regarded as equivalents of the present invention. Also, the steps of executing the series of processes described above may naturally be executed chronologically in the order described, but need not necessarily be executed chronologically. Some steps may be performed in parallel or independently of each other.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (22)
1. A cell load balancing method applied to a first network device, the method comprising:
sending resource request information to the second network equipment;
and receiving the available resource information sent by the second network equipment.
2. The cell load balancing method according to claim 1, wherein the resource request information is carried in a report characteristic field of an interface establishment request, an interface update request, a cell handover request, a resource status request, or a resource status request of the first network device and the second network device.
3. The cell load balancing method according to claim 1, wherein the resource request information carries at least one of:
an indication of a type of beam information that the first network device wishes to acquire;
type information of beam quality measured by the terminal.
4. The cell load balancing method according to claim 1, wherein the available resource information comprises at least one of:
location range information of the terminal;
type information of the beam;
identification information of the beam;
a quality requirement threshold of the beam;
specific bearer capability information in each location or beam direction.
5. The cell load balancing method according to claim 1 or 4, wherein the available resource information further includes a resource type indication, and the resource type includes: reusable resources or directly switchable resources.
6. The cell load balancing method according to claim 1, wherein the available resource information is carried in an interface establishment request acknowledgement message, an interface update request acknowledgement message, a cell handover request acknowledgement message, or a resource status response message of the first network device and the second network device.
7. The cell load balancing method according to claim 1, wherein after receiving the available resource information for load balancing sent by the second network device, the method further comprises:
selecting a terminal meeting a switching condition according to a measurement report reported by the terminal and the available resource information;
and sending a switching request command to the second network equipment, and switching the selected terminal meeting the switching condition to a cell of the second network equipment.
8. The cell load balancing method according to claim 7, wherein the handover request command carries at least one of the following:
the beam mark measured by the terminal for switching;
the quality of the beam measured by the terminal performing the handover;
arranging the beam identifications according to the ascending order or the descending order of the quality;
specific location information of the terminal performing the handover;
a quality of service type indication of the traffic of the terminal performing the handover.
9. A cell load balancing method applied to a second network device, the method comprising:
receiving resource request information sent by first network equipment;
and sending the available resource information to the first network equipment.
10. The cell load balancing method according to claim 9, wherein the resource request information is carried in a report characteristic field of an interface establishment request, an interface update request, a cell handover request, a resource status request, or a resource status request of the first network device and the second network device.
11. The cell load balancing method according to claim 9, wherein the resource request information carries at least one of:
an indication of a type of beam information that the first network device wishes to acquire;
type information of beam quality measured by the terminal.
12. The cell load balancing method according to claim 9, wherein the available resource information includes at least one of:
location range information of the terminal;
type information of the beam;
identification information of the beam;
a quality requirement threshold of the beam;
specific bearer capability information in each location or beam direction.
13. The cell load balancing method according to claim 9 or 12, wherein the available resource information includes a resource type indication, and the resource type includes: reusable resources or directly switchable resources.
14. The cell load balancing method according to claim 9, wherein the available resource information is carried in an interface establishment request acknowledgement message, an interface update request acknowledgement message, a cell handover request acknowledgement message, or a resource status response message of the first network device and the second network device.
15. The cell load balancing method according to claim 9, wherein after sending the available resource information for load balancing to the first network device, the method further comprises:
and receiving a switching request command sent by the first network equipment, wherein the switching request command is used for switching the terminal meeting the switching condition selected by the first network equipment to a cell of the second network equipment.
16. The cell load balancing method according to claim 15, wherein the handover request command carries at least one of the following:
the beam mark measured by the terminal for switching;
the quality of the beam measured by the terminal performing the handover;
arranging the beam identifications according to the ascending order or the descending order of the quality;
specific location information of the terminal performing the handover;
a quality of service type indication of the traffic of the terminal performing the handover.
17. A cell load balancing device applied to a first network device includes:
the receiving and sending module is used for sending the resource request information to the second network equipment; and receiving the available resource information sent by the second network equipment.
18. A network device, comprising:
a transceiver for transmitting resource request information to a second network device; and receiving the available resource information sent by the second network equipment.
19. A cell load balancing apparatus, applied to a second network device, includes:
the receiving and sending module is used for receiving resource request information sent by first network equipment;
and sending the available resource information to the first network equipment.
20. A network device, comprising:
the transceiver is used for receiving resource request information sent by the first network equipment; and sending the available resource information to the first network equipment.
21. A communication device, comprising: a processor, a memory storing a computer program which, when executed by the processor, performs the method of any of claims 1 to 8, or the method of any of claims 9 to 16.
22. A computer-readable storage medium comprising instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1 to 8, or the method of any one of claims 9 to 16.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910875261.0A CN112533254B (en) | 2019-09-17 | 2019-09-17 | Cell load balancing method, device and network equipment |
| PCT/CN2020/115897 WO2021052418A1 (en) | 2019-09-17 | 2020-09-17 | Cell load balancing method and device, and network device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910875261.0A CN112533254B (en) | 2019-09-17 | 2019-09-17 | Cell load balancing method, device and network equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112533254A true CN112533254A (en) | 2021-03-19 |
| CN112533254B CN112533254B (en) | 2022-08-30 |
Family
ID=74883363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910875261.0A Active CN112533254B (en) | 2019-09-17 | 2019-09-17 | Cell load balancing method, device and network equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112533254B (en) |
| WO (1) | WO2021052418A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113873584A (en) * | 2020-06-30 | 2021-12-31 | 大唐移动通信设备有限公司 | Cell switching method and communication device |
| WO2023273966A1 (en) * | 2021-06-30 | 2023-01-05 | 中兴通讯股份有限公司 | Cell handover method, and base station and computer-readable storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104507120A (en) * | 2014-12-10 | 2015-04-08 | 京信通信系统（中国）有限公司 | Inter-cell load balancing method and device |
| CN107493591A (en) * | 2017-07-14 | 2017-12-19 | 武汉正维电子技术有限公司 | Reduce LTE load balance optimization methods and the base station of signaling consumption |
| US20170367030A1 (en) * | 2014-12-09 | 2017-12-21 | Zte Corporation | Method and device for processing network access, and network access method and device |
| CN109640358A (en) * | 2017-10-09 | 2019-04-16 | 中国移动通信有限公司研究院 | Select method, base station and the readable storage medium storing program for executing of load balancing Target cell |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8175603B1 (en) * | 2009-02-24 | 2012-05-08 | Eden Rock Communications, Llc | Neighboring cell directed handover in a wireless network |
| CN102625389B (en) * | 2011-01-31 | 2015-09-30 | 华为技术有限公司 | A kind of cut-in method of mobile communications network, device and system |
| CN103916908A (en) * | 2013-01-04 | 2014-07-09 | 阿尔卡特朗讯 | Method and device for balancing load of serving cell |
| CN106535259A (en) * | 2015-09-11 | 2017-03-22 | 中国移动通信集团上海有限公司 | Cell load balancing method and cell load balancing device |
-
2019
- 2019-09-17 CN CN201910875261.0A patent/CN112533254B/en active Active
-
2020
- 2020-09-17 WO PCT/CN2020/115897 patent/WO2021052418A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170367030A1 (en) * | 2014-12-09 | 2017-12-21 | Zte Corporation | Method and device for processing network access, and network access method and device |
| CN104507120A (en) * | 2014-12-10 | 2015-04-08 | 京信通信系统（中国）有限公司 | Inter-cell load balancing method and device |
| CN107493591A (en) * | 2017-07-14 | 2017-12-19 | 武汉正维电子技术有限公司 | Reduce LTE load balance optimization methods and the base station of signaling consumption |
| CN109640358A (en) * | 2017-10-09 | 2019-04-16 | 中国移动通信有限公司研究院 | Select method, base station and the readable storage medium storing program for executing of load balancing Target cell |
Non-Patent Citations (3)
| Title |
|---|
| ERICSSON: "R2-1906869 Load balancing in NR", 《3GPP TSG-RAN WG2 #106 R2-1906869》 * |
| ERICSSON: "R3-190824 Load sharing and load balancing optimization", 《3GPP TSG-RAN WG3 #103 R3-190824》 * |
| ERICSSON: "R3-190825 Enhancements to load sharing and load balance", 《3GPP TSG-RAN WG3 #103 R3-190825》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113873584A (en) * | 2020-06-30 | 2021-12-31 | 大唐移动通信设备有限公司 | Cell switching method and communication device |
| WO2023273966A1 (en) * | 2021-06-30 | 2023-01-05 | 中兴通讯股份有限公司 | Cell handover method, and base station and computer-readable storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021052418A1 (en) | 2021-03-25 |
| CN112533254B (en) | 2022-08-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101275359B1 (en) | Signalling of resource status information between base stations for load balancing | |
| CN103298117B (en) | A kind of instruction of running time-frequency resource and confirmation method and device | |
| US10237750B2 (en) | Method and apparatus for transmitting pattern information | |
| US8284717B2 (en) | Method and a device for transferring a flow of data by a first telecommunication device to a second telecommunication device | |
| EP3379881A1 (en) | Configuration method and apparatus for scheduling resources, user equipment and enodeb | |
| CN101138220B (en) | Method for communicating feedback information between mobile station and base station | |
| KR20200016225A (en) | System and method for exchanging configuration information between two nodes of a wireless network | |
| CN102612101B (en) | CoMP realizes the method and system that switching cell collection is chosen | |
| CN104221421A (en) | System and method for measurement report triggering configuration for multiple point communication measurement set management | |
| CN103298118B (en) | A kind of instruction of running time-frequency resource and confirmation method and device | |
| CN104540159A (en) | Reporting method, reporting system, and resource configuration method and system | |
| CN105101244A (en) | Base station, device to device user equipment, method thereof | |
| CN103298119B (en) | A kind of instruction of running time-frequency resource and confirmation method and device | |
| CN103444235A (en) | Mobile communication method and wireless terminal | |
| CN103391575A (en) | Method for configuration and reporting of transmission node information, network-side device and terminal device | |
| CN112533254B (en) | Cell load balancing method, device and network equipment | |
| CN109041150B (en) | Cell switching method, terminal and network equipment | |
| CN101656979A (en) | Method, device and system for managing resources in multi-carrier system | |
| CN101998453A (en) | Method for transmitting and receiving channel quality measurement indication signaling | |
| EP2848026A2 (en) | Method of assisting user equipment in receiving broadcast information of pico enb | |
| CN102027796B (en) | Method for allocating transmission resources in telecommunication system | |
| CN101998631B (en) | Method, system and device of resource allocation | |
| CN111432379B (en) | Transmission method and terminal of direct link | |
| CN108419218B (en) | Resource multiplexing method for machine-to-machine communication | |
| CN103686887A (en) | Spectrum handoff method, device and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |