WO2020173327A1

WO2020173327A1 - Coverage adjustment method and wireless access network node

Info

Publication number: WO2020173327A1
Application number: PCT/CN2020/075576
Authority: WO
Inventors: 张晨璐
Original assignee: 维沃移动通信有限公司
Priority date: 2019-02-28
Filing date: 2020-02-17
Publication date: 2020-09-03
Also published as: CN111436053A; CN111436053B

Abstract

The present disclosure provides a coverage adjustment method and a radio access network node. Said method comprises: adjusting the coverage of some beams of a radio access network node.

Description

Coverage adjustment method and wireless access network node Cross reference of related applications

This application claims the priority of Chinese Patent Application No. 201910153586.8 filed in China on February 28, 2019, the entire content of which is incorporated herein by reference. Technical field

The present disclosure relates to the field of communication technologies, and in particular, to a coverage adjustment method and a radio access network node. Background technique

The coverage performance of the wireless access network nodes (such as base stations) in the communication system directly affects the user experience. For example, the terminal may not be able to communicate normally in the coverage blind spot, and the terminal may frequently switch in the repeated coverage area. The coverage range of the wireless access network nodes in the current communication system cannot be flexibly adjusted, which makes the network coverage effect relatively poor. Summary of the invention

The embodiments of the present disclosure provide a coverage adjustment method and a radio access network node to solve the problem of poor network coverage.

In the first aspect, the embodiments of the present disclosure provide a coverage adjustment method, which is applied to a radio access network node, and includes:

Adjust the coverage area of the partial beam of the radio access network node.

In the second aspect, the embodiments of the present disclosure provide a radio access network node, including:

The adjustment module is configured to adjust the coverage area of a part of the beam of the radio access network node.

In a third aspect, an embodiment of the present disclosure provides a radio access network node, including: a memory, a processor, and a program stored in the memory and capable of running on the processor, and the program is used by the processor The steps in the coverage adjustment method provided by the embodiments of the present disclosure are implemented during execution.

In a fourth aspect, an embodiment of the present disclosure provides a computer-readable storage medium, where a program is stored on the computer-readable storage medium, and when the program is executed by a processor, the implementation of the present disclosure is realized Examples provide steps in the coverage adjustment method.

In the embodiment of the present disclosure, the coverage of part of the beams of the radio access network node is adjusted, so that the coverage of the radio access network node can be flexibly configured, thereby improving the network coverage effect. Description of the drawings

Figure 1 is a structural diagram of a network system applicable to embodiments of the present disclosure;

Fig. 2 is a flowchart of a coverage adjustment method provided by an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of network coverage of related technologies provided by an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of a coverage adjustment provided by an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of another coverage adjustment provided by an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a scenario provided by an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of another coverage adjustment provided by an embodiment of the present disclosure;

FIG. 8 is a schematic diagram of a beam coverage provided by an embodiment of the present disclosure;

Fig. 9 is a flowchart of another coverage adjustment method provided by an embodiment of the present disclosure; Fig. 10 is a structural diagram of a radio access network node provided by an embodiment of the present disclosure;

Fig. 11 is a structural diagram of another radio access network node provided by an embodiment of the present disclosure; Fig. 12 is a structural diagram of another radio access network node provided by an embodiment of the present disclosure; Fig. 13 is a structural diagram provided by an embodiment of the present disclosure Another structure diagram of a radio access network node; FIG. 14 is a structure diagram of another radio access network node provided by an embodiment of the present disclosure. detailed description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative labor are within the protection scope of the present disclosure.

The term "comprising" and any variations of it in the specification and claims of the present disclosure are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to clear Those steps or units listed below may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment. This In addition, the use of "and/or" in the specification and claims means at least one of the connected objects, such as A and/or B, which means that it includes A alone, B alone, and there are three situations for both A and B.

In the embodiments of the present disclosure, words such as "exemplary" or "for example" are used as examples, illustrations, or illustrations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present disclosure should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, use " Words such as "exemplary" or "for example" are intended to present related concepts in a specific manner.

The following describes embodiments of the present disclosure in conjunction with the drawings. The coverage adjustment method and radio access network node provided by the embodiments of the present disclosure can be applied to a wireless communication system. The wireless communication system may be a 5G system, or an Evolved Long Term Evolution (eLTE) system or a Long Term Evolution (LTE) system, or a subsequent evolved communication system, etc.

Please refer to FIG. 1. FIG. 1 is a structural diagram of a network system applicable to an embodiment of the present disclosure. As shown in FIG. 1, it includes a terminal 11 and a wireless access network node 12, where the terminal 11 may be a user terminal (User Equipment, UE) or other terminal-side devices, such as mobile phones, tablet computers (Tablet Personal Computer), laptop computers (Laptop Computer), personal digital assistants (PDA), mobile Internet devices (Mobile Internet Device, Terminal-side devices such as MID), wearable devices (Wearable Devices), or robots. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present disclosure. The above-mentioned radio access network node 12 may be a 4G base station, or a 5G base station, or a base station of a later version, or a base station in other communication systems, or it may be called Node B, Evolved Node B, or Transmission Reception Point (Transmission Reception Point, TRP), or access point (Access Point, AP), or other vocabulary in the field, as long as the same technical effect is achieved, the wireless access network node is not limited to a specific technical vocabulary. In addition, the aforementioned radio access network node 12 may be a master node (Master Node, MN) or a secondary node (Secondary Node, SN). It should be noted that, in the embodiments of the present disclosure, only a 5G base station is taken as an example, but the specific type of a radio access network node is not limited.

Please refer to Figure 2. Figure 2 is a flowchart of a coverage adjustment method provided by an embodiment of the present disclosure. The method is applied to a radio access network node. As shown in Figure 2, it includes the following steps:

Step 201: Adjust the coverage of part of the beams of the radio access network node.

Wherein, the above-mentioned partial beams may be one or more beams, and can be configured separately for each beam, for example: to enhance the coverage of a certain beam, and to reduce the impact of another beam Coverage. It may also be uniformly adjusted for multiple beams, for example: uniformly enhancing the coverage of two adjacent beams, or uniformly reducing the coverage of the other two adjacent beams. Optionally, the above adjustment may include:

Enhancing the coverage of the partial beam; or

Reduce the coverage of the partial beam; or

Enhance the coverage of a part of the beam, and reduce the coverage of another part of the beam.

In this way, the network coverage can be adjusted flexibly.

In the embodiments of the present disclosure, since the coverage of some beams can be adjusted, the coverage of all beams is not adjusted uniformly. In this way, the coverage of the radio access network nodes may be non-circular, or called irregular shape, This can make the network coverage effect better. For example: For a certain blind area, the coverage of the corresponding beam can be increased to achieve the coverage of the blind area; For another example: For a certain interference area (for example: repeated coverage area of two adjacent radio access network nodes), the coverage of the corresponding beam can be reduced, To reduce interference.

As an optional implementation manner, the aforementioned adjustment includes, but is not limited to, at least one of the following: adjusting the covering distance, adjusting the covering direction, and adjusting the covering shape.

Wherein, the adjustment of the coverage distance refers to the adjustment of the coverage distance of the beam, the adjustment of the coverage direction refers to the adjustment of the coverage direction of the beam, and the adjustment of the coverage shape refers to the adjustment of the coverage shape of the beam. It should be noted that during the adjustment process, different beam adjustments may be the same or different. For example, one beam is used to adjust the coverage distance, another beam is used to adjust the coverage direction, and another beam is used to adjust the coverage shape.

In this way, it is possible to adjust the network coverage more flexibly to further improve the network coverage effect.

As an optional implementation manner, the foregoing adjustment of the coverage of a partial beam of the radio access network node includes:

Adjusting the coverage parameters of the partial beams of the radio access network.

Wherein, the aforementioned coverage parameter may be a parameter that can adjust the coverage effect by adjusting the parameter, for example: at least one of the power parameter of the beam, the downtilt angle of the antenna, and the beamforming precoding matrix; the aforementioned power parameter may be Transmit power, at least one of the maximum transmit power of the beam, the transmit power of the reference signal, the transmit power of the data channel, and the transmit power of the control channel, where, The maximum transmit power can be the sum of the transmit power of all channels allowed by the beam.

Optionally, the coverage parameter includes but is not limited to at least one of the following:

Coverage parameters of the first signal;

Coverage parameters of the associated signal of the first signal;

Coverage parameters of the first channel;

The coverage parameter of the associated channel of the first channel.

Wherein, the foregoing first signal may be a key signal associated with the coverage area, where the key signal affects the coverage area, or may be referred to as a key signal that affects the coverage area. For example: Synchronization Signal Block (Synchronization Signal Block, S SB) or other signals associated with the coverage area, which are not limited. The above-mentioned associated signal may be a signal associated with the above-mentioned first signal. For example, when the above-mentioned first signal is an SSB, the above-mentioned associated signal may be a channel state information reference signal (CSI-RS). ), at least one of demodulation reference signals (Demodulation Reference Signal, DMRS), phase-tracking reference signals (Phase-tracking reference signals, PT-RS), etc.

The foregoing first channel may be a key channel associated with the coverage area, where the key channel affects the coverage area, or may be called a key channel that affects the coverage area. For example: the above-mentioned data channel or control channel, and the above-mentioned associated channel may be a channel associated with the first channel, for example: when the first channel is a data channel, the associated channel is a control channel, and when the first channel is a control channel, the associated channel The channel is a data channel.

In the foregoing implementation manner, it is possible to adjust the coverage parameter of the beam to adjust the coverage range of the beam. For example: reducing the transmission power of the first signal to reduce the coverage of the beam, or for example: increasing the transmission power of the first signal to enhance the coverage of the beam. Here only the transmission power is used as an example. In the embodiment of the present disclosure, the adjustment method of the coverage parameter is not limited. For example, the power offset between the transmission power of the first signal and the transmission power of the associated signal can be adjusted, or The downtilt angle of the antenna and/or the beamforming precoding matrix can be adjusted to reduce or increase the coverage of the beam.

As an optional implementation manner, the adjusting the coverage of a partial beam of the radio access network node includes:

Adjust the coverage of part of the beams of the radio access network node according to the coverage analysis result, Wherein, the coverage analysis result is a result obtained by analyzing network coverage data.

Wherein, the coverage analysis result may be obtained by analyzing the network coverage data by the above-mentioned radio access network node, or may be sent by the receiving core network node, for example: before adjusting the coverage of the partial beams of the radio access network node , The method further includes:

Receiving the coverage analysis result sent by the core network node; or

Acquire the network coverage data, and analyze the network coverage data to obtain the coverage analysis result.

The aforementioned core network node may refer to the node device on the core network side, for example: a dedicated server for the operator's core network, such as an O&M server.

In addition, the above analysis may include at least one of the following:

Determine the partial beam;

Determine the coverage area to be adjusted for each beam in the partial beams.

The foregoing coverage analysis result can be used to indicate the part of the beam that needs to be adjusted, and the coverage of each beam in the part of the beam that needs to be adjusted. For example: the above network coverage data indicates that the coverage area of the beam 1 of the wireless access network node overlaps with that of neighboring nodes, and indicates that the coverage area of the beam 3 of the wireless access network node has a blind spot, then the above analysis result can be Indicates that beam 1 and beam 3 need to be adjusted to reduce the coverage of beam 1 and enhance the coverage of beam 3; for another example: if a certain coverage edge of a radio access network node is in an area with high crowd density and/or frequent movement, then The above analysis result can indicate that the beams that need to be adjusted are the beams at the coverage edge, and that the coverage of these beams is increased. At the same time, the coverage of the beams of the adjacent nodes corresponding to the coverage edge can be reduced, so that the coverage is The edge becomes a non-covered edge, thereby reducing terminal handover ping-pong, network selection ping-pong, and updating of tracking area, and can also avoid terminal paging (paging) receiving gaps and successfully receive paging messages.

In addition, the aforementioned network coverage data collection methods include, but are not limited to, personnel collection and equipment automatic collection. Wherein, manual data collection may refer to manually collected network coverage data, such as at least one of actual drive test data, fixed-point measurement data, and user feedback data. The automatic collection of the above-mentioned equipment may include the coverage data automatically collected by the terminal or the coverage data collected exclusively for testing. For example, the terminal or the dedicated testing equipment performs data measurement collection and reporting according to the provisions of the communication protocol.

In addition, the aforementioned network coverage data may include data fed back by the terminal and/or drive test data. Like this The actual situation of the network can be fed back, so that adjustments can be made based on these data, so that the adjusted coverage is more suitable for the current network conditions.

Optionally, the aforementioned network coverage data may include but is not limited to at least one of the following:

Data used to reflect signal strength, data used to reflect signal quality, data used to reflect communication failures, and location information.

The above-mentioned data used to reflect the signal strength may be reference signal received power (Reference Signal Receiving Power, RSRP) and other data that can reflect the signal strength; the above-mentioned data used to reflect the signal quality may be reference signal received quality (Reference Signal Received Power). Quality, RSRQ), Signal to Interference plus Noise Ratio (SINR) and other data that can reflect signal quality; The above-mentioned data used to reflect communication failures may be the number of radio link failures, call completion rate, The number of handover failures, the number of dropped calls, the probability of handover, etc. can reflect data that can reflect communication failures; the above-mentioned location information may be information used to characterize the geographic location of the terminal. For example, GPS location parameters, location information (such as beam ID) that can be used to characterize the direction of the terminal relative to the wireless access network node, and other data that can reflect the location of the terminal.

Through the above-mentioned network coverage data, the wireless access network node or the core network can analyze the beams that need to be adjusted and the coverage of each beam that needs to be adjusted.

Optionally, in an implementation manner, in the embodiment of the present disclosure, the adjustment may be performed before the radio access network node is deployed, and the network coverage data is collected before the radio access network node is deployed Of; or

The adjustment may be performed after the radio access network node is deployed, and the network coverage data is collected after the radio access network node is deployed.

In this way, it is possible to flexibly adjust the network coverage before and after the deployment of the radio access network node, and after adjusting the coverage of part of the beam before the deployment of the radio access network node, the method provided in the embodiments of the present disclosure can also be used to adjust After the deployment of the radio access network node, part of the beam is adjusted. In addition, when the adjustment is made after the wireless access network node is deployed, the coverage data collected before the wireless access network node is deployed may also be used.

In the foregoing implementation manners, flexible deployment or adjustment of the coverage of the radio access network can be achieved, and the coverage effect can be improved compared with related technologies. For example, as shown in FIG. 3, in the related technology, the coverage theory of the radio access network nodes The above is assumed to be circular, adjusted by adding wireless access network nodes Network coverage, and this will cause interference. In the foregoing embodiment, the network coverage as shown in FIG. 4 can be achieved, and different radio access network nodes can be adjusted to different shapes of coverage, and the coverage can be adjusted actively to achieve coverage adaptation technology, that is, wireless access The coverage of the network node is adaptive to factors such as the current environment and location.

Optionally, in another implementation manner, in an embodiment of the present disclosure, the foregoing adjustment of the coverage of a partial beam of the wireless access network node includes at least one of the following:

By adjusting the coverage area of a part of the beam of the radio access network node to reduce or eliminate the overlapping coverage area between the radio access network node and neighboring nodes;

By adjusting the coverage of part of the beams of the radio access network node, the blind area or the low signal area is covered, where the low signal area is an area where the signal strength is lower than a preset threshold.

Wherein, adjusting the coverage of part of the beams of the radio access network node to reduce or eliminate the overlapping coverage between the radio access network node and neighboring nodes may be to reduce the coverage of part of the beams , In order to reduce or eliminate the overlapping coverage between the wireless access network node and the adjacent node. For example: as shown in Fig. 5, the coverage of a beam with interference on the left in Fig. 5 is reduced to reduce or eliminate the overlapping coverage with adjacent nodes to achieve the effect of reducing or eliminating interference.

The above adjustment of the coverage of part of the beam of the radio access network node to cover the blind area or low signal area may be to enhance the coverage of the part of the beam to cover the blind area or low signal area. For example: as shown in Figure 5, the coverage of the two beams corresponding to the blind spot in the right coverage direction in Figure 5 is enhanced to achieve coverage of the blind spot or low signal area.

In this implementation manner, it is possible to reduce or eliminate the repeated coverage area between the radio access network node and the neighboring node, so as to reduce or eliminate interference, and it is also possible to achieve coverage blind areas or low signal areas. Optionally, in this implementation manner, the adjustment may be made based on data fed back by the terminal and/or drive test data.

Optionally, in another implementation manner, in an embodiment of the present disclosure, the aforementioned adjustment is coordinated adjustment with the coverage of adjacent nodes.

Wherein, the aforementioned coordinated adjustment of the coverage may be coordinated adjustment of the aforementioned radio access network node and the aforementioned adjacent node. For example, the above-mentioned radio access network node enhances the coverage of the coverage edge adjacent to the coverage edge of the neighboring node or the overlapped partial beams. The coverage area of the beam corresponding to the point is reduced; for another example: the above-mentioned wireless access network node reduces the coverage edge of the coverage edge adjacent to the coverage edge of the adjacent node or reduces the coverage area of the overlapping partial beams, and reduces the coverage area of the adjacent node The coverage of the beam is enhanced. Taking Figure 6 as an example, before the adjustment, the edge area of the network coverage between the two nodes may have dense crowds and frequent terminal movement areas, so that the probability of terminal switching, terminal network selection, and terminal tracking area update increases. The increase in the operation probability of the user data plane and the signaling plane may affect the user experience (for example, there is a ping-pong phenomenon such as handover, network selection, and tracking area update). In this way, in this embodiment, the coordinated adjustment between the radio access network node and the aforementioned neighboring nodes is shown in FIG. 7, where one node enhances the network coverage edge area, and the other node reduces the network coverage edge area. In order to make the original crowded and frequent terminal movement areas change non-edge areas, to reduce the probability of terminal handover, terminal network selection, and terminal tracking area update, and improve user experience.

In addition, the coordinated adjustment of the coverage may be that the radio access network node and the neighboring node negotiate to determine their adjusted coverage, or the core network device may determine the adjusted coverage of the radio access network node and the neighboring node. The range, or may be the above-mentioned radio access network node or neighboring nodes negotiate to determine the adjusted coverage range of the above-mentioned radio access network node and the neighboring node.

In this implementation manner, since the coverage range of adjacent nodes can be adjusted in coordination, the mobile performance of the network can be optimized. For example: It can be implemented as follows:

The number of terminals covered by the network coverage edge area of the radio access network node after the adjustment is less than the number of terminals covered by the network coverage edge area of the radio access network node before the adjustment; and/ Or,

The mobile frequency of the terminal in the network coverage edge area of the radio access network node after the adjustment is lower than the mobile frequency of the terminal in the network coverage edge area of the radio access network node before the adjustment; and/or

The number of terminals covered by the network coverage edge area of the adjacent node after the adjustment is less than the number of terminals covered by the adjacent network coverage edge area before the adjustment; and/or,

The frequency of terminal movement in the network coverage edge area of the adjacent node after the adjustment is lower than the movement frequency of the terminal in the network coverage edge area of the radio access network node before the adjustment.

Optionally, in this implementation manner, the adjustment may be made based on data and/or drive test data fed back by the terminal. As an optional implementation manner, before the adjusting the coverage of the partial beams of the radio access network node, the method further includes:

Get coverage parameters of adjacent nodes.

Among them, the coverage parameters of the above-mentioned neighboring nodes may refer to the coverage parameters described in the above embodiments, which will not be repeated here, for example: obtaining the transmission power of the neighboring nodes.

Optionally, the coverage parameter of the aforementioned neighboring cell may be obtained through an interface between access network nodes, or the coverage parameter of the neighboring cell may be reported by the terminal after measuring the neighboring cell or receiving the neighboring cell broadcast message, Wherein, the neighboring cell corresponds to the neighboring node.

For example, before the wireless access network node adjusts the coverage, it can obtain the parameters related to the neighboring cell and coverage through the interface between the access network nodes (such as the Xn interface) or the report method after the terminal of the cell measures the neighboring cell. (For example, the transmit power of the neighboring cell, etc.) to provide a data reference for the coverage adjustment of this cell.

Optionally, the adjusting the coverage of the partial beam of the radio access network node includes: adjusting the coverage of the partial beam of the radio access network node with reference to the coverage parameter of the neighboring node.

Wherein, adjusting the coverage of the partial beams of the radio access network node with reference to the coverage parameters of the neighboring nodes may be, according to the coverage parameters of the neighboring nodes, determining the partial beams that need to be adjusted, and the coverage of these beams Range, for example: The coverage parameters of the neighboring nodes determine that a beam of the above-mentioned radio access network node has a relatively large overlap area with the neighboring node, and the coverage of the corresponding beam of the radio access network node can be reduced, for example: The coverage parameters of the adjacent nodes determine that the coverage area of a certain area of the adjacent area is relatively small, and the coverage of the beams in the area where the coverage direction of the wireless access network node is located can be enhanced to achieve coverage of blind areas or low signal areas. Wait. In addition, the foregoing adjustment of the coverage range of the partial beams of the radio access network node with reference to the coverage parameters of the adjacent nodes can be achieved by adjusting the coverage range of the partial beams of the radio access network node in combination with the foregoing coverage analysis result. That is, referring to the coverage parameter of the neighboring node, and adjusting the coverage range of the partial beam of the radio access network node according to the coverage analysis result.

Since the coverage parameters of the neighboring nodes are referred to, the coverage of the partial beams of the radio access network node is adjusted, so that the adjusted coverage effect is better.

As an optional implementation manner, the adjustment of the partial beam of the radio access network node Before the coverage, the method further includes:

Sending the adjustment decision of the adjustment and/or the adjustment suggestion information of the coverage adjustment of the adjacent node to the adjacent node;

Or

After adjusting the coverage of the partial beams of the radio access network node, the method further includes:

Sending the adjustment result of the adjustment and/or the adjustment suggestion information of the coverage adjustment of the neighboring node to the neighboring node.

Wherein, the adjustment decision may be determined before the adjustment, and the adjustment is adjusted according to the adjustment decision; and/or

The adjustment suggestion information may be used to suggest that the neighboring nodes perform coverage adjustments that cooperate with the adjustments. Specifically, the aforementioned adjustment suggestion information may include a beam that is suggested to be adjusted by an adjacent node, and may include a coverage area that the beam needs to be adjusted.

In this implementation manner, after completing the analysis and deciding to adjust (not yet adjusted), the radio access network node can adjust the coverage of the cell through the interface between the radio access network nodes (such as the Xn interface) (for example: What parameters are to be used to adjust the coverage) and recommendations for neighboring cell adjustments (for example: how to recommend neighboring cells to adjust); or after the adjustment is completed, the coverage results (for example: adjusted parameters) and/or relative Advice on the adjustment of neighboring cells (for example: suggesting how to adjust neighboring cells) Inform neighboring nodes. It is convenient for neighboring nodes to make corresponding adjustments to their coverage before or after the coverage adjustment, so as to improve the overall network coverage effect.

In the embodiment of the present disclosure, the coverage of part of the beams of the radio access network node is adjusted, so that the coverage of the radio access network node can be flexibly configured, thereby improving the network coverage effect.

The following uses the coverage adjustment method provided by the embodiments of the present disclosure to be applied in a 5G NR scenario for illustration:

In the 5G NR scenario, the cell coverage is composed of multiple beams (Beam). As shown in Figure 8, 5G coverage is completed by multiple beams. According to the current agreement, the beam can reach up to 64 beams. When the number of beams is large, each beam is narrower.

In this solution, the coverage size of individual beams can be changed as needed based on the operator's drive test data or the big data collected at the wireless air interface, so that the coverage shape of the entire base station can be changed. The specific process can be seen in Figure 9:

1. Collect network coverage data.

Network coverage data collection methods can be derived from:

Manual data collection: Manual data collection refers to network coverage data collected manually. For example, actual drive test data, fixed-point measurement data, and user feedback data.

Automatic data collection: Automatic data collection includes coverage data automatically collected by user equipment. For example, user equipment or special testing equipment performs data measurement collection and reporting according to the provisions of the communication protocol.

Coverage data parameters include but are not limited to the following parameters, including at least one or a combination of the following parameters:

Data reflecting signal strength or quality: such as RSRP, RSRQ, SINR, etc.;

Data to reflect the failure: the number of wireless link failures, the call connection rate, the number of handover failures, the number of dropped calls, the probability of switching soldiers, etc.

Location information: Information that characterizes the geographic location of the user. The GPS location parameter, the user may be used to characterize the relative position information of the base station direction, such as beam ID (Beam ID) _o

2. Coverage analysis. The network-side node receives and centrally analyzes the collected network coverage data. The network node receives the collected network coverage data for data analysis, and determines the beam that needs coverage adjustment and the coverage area that needs to be adjusted.

The "network side node" to which it belongs may be an operator's base station, or/and a dedicated server of the operator's core network, such as an O&M server.

3. Coverage adjustment. According to the coverage analysis results, adjust the base station setting parameters to enhance or reduce the coverage of the beam in a certain direction.

The adjustment parameters include one or more of the following combinations:

The maximum transmit power of Beam;

Beam reference signal transmission power;

Beam data channel transmit power;

Beam control channel transmit power;

The above solution can implement the following specific embodiments:

Embodiment 1: Flexible network deployment As shown in FIG. 3, in the related art, the coverage of the radio access network nodes is theoretically assumed to be circular, and the network coverage is adjusted by adding the radio access network nodes, and this will cause interference.

The coverage adaptive technology given in this embodiment can actively adjust the coverage range, which can be specifically shown in FIG. 4.

Embodiment 2: Network coverage performance optimization

As shown in Figure 5, when strong interference occurs in a certain direction, the radio access network node can adjust the coverage of the beam caused by the interference source base station to avoid interference. When a coverage blind area occurs in a certain direction, the beam coverage of the serving cell in that direction can be adjusted to achieve coverage of the blind area or low signal area.

Among them, the second embodiment may be that the existing network has problems due to changes in the environment, and then actively adjusts the coverage. The first embodiment may be to plan coverage when deploying a new network. For example, in the first embodiment, planning may be carried out according to drive test and simulation means, and the feature that the coverage shape of the radio access network node may not be circular may be used to achieve better coverage. The second embodiment may optimize coverage based on external data (for example, complaints, terminal measurement big data).

The third embodiment: mobile performance optimization

As shown in Figure 7, the radio access network node can adjust the location of the cell edge area based on terminal feedback and drive test information. As shown in the scenario shown in Fig. 6, if the edge area of the cell is in a crowded and frequently moving area, the probability of handover, network selection, and tracking area update increases. The resulting increase in the operation probability of the user data plane and signaling plane may affect the user experience (for example, there is a ping-pong phenomenon such as handover, network selection, and tracking area update). Therefore, optimize the network coverage and avoid the network edge as much as possible. Areas with dense human flow and frequent movement can reduce the user's data plane and signaling plane operations, and reduce the probability of experience degradation.

In order to achieve this optimization goal, the radio access network node can optimize the cell edge area by adjusting the coverage of beam in certain directions according to terminal feedback or drive test information, as shown in Figure 7.

Refer to FIG. 10. FIG. 10 is a structural diagram of a radio access network node provided by an embodiment of the present disclosure. As shown in FIG. 10, the radio access network node 1000 includes:

The adjustment module 1001 is configured to adjust the coverage area of a partial beam of the radio access network node. Optionally, the adjustment of the partial beams of the radio access network node performed by the adjustment module 1001 The coverage area includes:

Optionally, the coverage parameter includes at least one of the following:

Coverage parameters of the first signal;

Coverage parameters of the associated signal of the first signal;

Coverage parameters of the first channel;

The coverage parameter of the associated channel of the first channel.

Optionally, the adjustment of the coverage of a partial beam of the radio access network node performed by the adjustment module 1001 includes:

Adjust the coverage area of the partial beams of the radio access network node according to the coverage analysis result, where the coverage analysis result is a result obtained by analyzing network coverage data.

Optionally, as shown in FIG. 11, the radio access network node 1000 further includes:

The receiving module 1002 is configured to receive the coverage analysis result sent by the core network node; or the analysis module 1003 is configured to obtain the network coverage data, and analyze the network coverage data to obtain the coverage analysis result.

Optionally, the collection mode of the network coverage data includes personnel collection and automatic equipment collection. Optionally, the network coverage data includes at least one of the following:

Optionally, the analysis includes at least one of the following:

Determine the partial beam;

Determine the coverage area to be adjusted for each beam in the partial beams.

Optionally, the adjustment is performed before the radio access network node is deployed, and the network coverage data is collected before the radio access network node is deployed; or

The adjustment is performed after the radio access network node is deployed, and the network coverage data is collected after the radio access network node is deployed.

Optionally, the network coverage data includes data and/or drive test data fed back by the terminal.

Optionally, the adjustment of the coverage of a partial beam of the radio access network node performed by the adjustment module 1001 includes at least one of the following: By adjusting the coverage area of part of the beams of the radio access network node, to reduce or eliminate the overlapping coverage area between the radio access network node and neighboring nodes;

Optionally, the adjustment is coordinated adjustment with the coverage of neighboring nodes.

Optionally, the number of terminals covered by the network coverage edge area of the radio access network node after the adjustment is less than the number of terminals covered by the network coverage edge area of the radio access network node before the adjustment Quantity; and/or,

Optionally, the adjustment includes at least one of the following:

Adjust the coverage distance, adjust the coverage direction and adjust the coverage shape.

Optionally, as shown in FIG. 12, the radio access network node 1000 further includes:

The obtaining module 1004 is used to obtain coverage parameters of adjacent nodes.

Adjust the coverage range of the partial beam of the radio access network node with reference to the coverage parameter of the neighboring node.

Optionally, the coverage parameter of the neighboring cell is obtained through an interface between access network nodes, or the coverage parameter of the neighboring cell is reported by the terminal after measuring the neighboring cell or receiving the neighboring cell broadcast message, where , The neighboring cell corresponds to the neighboring node.

Optionally, as shown in FIG. 13, the radio access network node 1000 further includes:

The first sending module 1005 is configured to send the adjustment decision of the adjustment and/or the adjustment suggestion information of the coverage adjustment of the adjacent node to the adjacent node; or,

The second sending module 1006 is configured to send the adjustment result of the adjustment and/or the adjustment suggestion information of the coverage adjustment of the adjacent node to the adjacent node.

Optionally, the adjustment decision is determined before the adjustment, and the adjustment is adjusted according to the adjustment decision; and/or

The adjustment suggestion information is used to suggest that the neighboring node perform coverage adjustment in coordination with the adjustment.

Optionally, the adjustment includes:

Enhancing the coverage of the partial beam; or

Reduce the coverage of the partial beam; or

The network device provided by the embodiment of the present disclosure can implement each process implemented by the radio access network node in the method embodiment of FIG. 2. To avoid repetition, details are not described herein again, and the network coverage effect can be improved.

Referring to FIG. 14, FIG. 14 is a structural diagram of another wireless access network node provided by an embodiment of the present disclosure. As shown in FIG. 14, the wireless access network node 1400 includes: a processor 1401, a transceiver 1402, and a memory 1403 And bus interface, where:

The processor 1401 or the transceiver 1402 is configured to adjust the coverage area of a part of the beam of the radio access network node.

Optionally, the adjusting the coverage of the partial beam of the radio access network node includes: adjusting the coverage parameter of the partial beam of the radio access network.

Optionally, the coverage parameter includes at least one of the following:

Coverage parameters of the first signal;

Coverage parameters of the associated signal of the first signal;

Coverage parameters of the first channel;

The coverage parameter of the associated channel of the first channel.

Optionally, the adjusting the coverage area of the partial beam of the radio access network node includes: adjusting the coverage area of the partial beam of the radio access network node according to the coverage analysis result, where the coverage analysis result It is the result of analyzing the network coverage data. Optionally, before the adjusting the coverage of the partial beams of the radio access network node, the transceiver 1402 is configured to: receive the coverage analysis result sent by the core network node; or

The processor 1401 is further configured to obtain the network coverage data, and analyze the network coverage data to obtain the coverage analysis result.

Optionally, the analysis includes at least one of the following:

Determine the partial beam;

Determine the coverage area to be adjusted for each beam in the partial beams.

Optionally, the adjusting the coverage of a partial beam of the radio access network node includes at least one of the following:

The mobile frequency of the terminal in the network coverage edge area of the radio access network node after the adjustment is lower than the mobile frequency of the terminal in the network coverage edge area of the radio access network node before the adjustment; and/or The number of terminals covered by the network coverage edge area of the adjacent node after the adjustment is less than the number of terminals covered by the adjacent network coverage edge area before the adjustment; and/or,

Optionally, the adjustment includes at least one of the following:

Optionally, before the adjusting the coverage of the partial beams of the radio access network node, the transceiver 1402 is configured to:

Get coverage parameters of adjacent nodes.

Optionally, before adjusting the coverage of a partial beam of the radio access network node, the transceiver 1402:

Or

After the adjustment of the coverage of the partial beam of the radio access network node, the transceiver 1402: sends the adjustment result of the adjustment and/or the adjustment recommendation information of the coverage adjustment of the adjacent node to the neighboring node.

Optionally, the adjustment includes:

Enhancing the coverage of the partial beam; or Reduce the coverage of the partial beam; or

The above-mentioned wireless access network node can improve the network coverage effect.

Wherein, the transceiver 1402 is configured to receive and send data under the control of the processor 1401, and the transceiver 1402 includes at least two antenna ports.

In FIG. 14, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1401 and various circuits of the memory represented by the memory 1403 are linked together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, this article will not further describe them. The bus interface provides the interface. The transceiver 1402 may be a plurality of elements, that is, include a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium. For different user equipment, the user interface 1404 may also be an interface capable of connecting externally and internally with required equipment. The connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 1401 is responsible for managing the bus architecture and general processing, and the memory 1403 can store data used by the processor 1401 when performing operations.

Optionally, an embodiment of the present disclosure further provides a wireless access network node, including a processor 1401, a memory 1403, a computer program stored in the memory 1403 and running on the processor 1401, and the computer program is processed When the device 1401 is executed, each process of the foregoing coverage adjustment method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, details are not described herein again.

The embodiments of the present disclosure further provide a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, each process of the coverage adjustment method embodiment provided by the embodiment of the present disclosure is implemented. And the same technical effect can be achieved. To avoid repetition, details are not repeated here. Wherein, the computer-readable storage medium, such as read-only memory (Read-Only Memory, ROM for short), random access memory (Random Access Memory, RAM for short), magnetic disk, or optical disk, etc.

It should be noted that in this article, the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements , And also include other elements that are not explicitly listed, or elements inherent to this process, method, article or device. Without more restrictions Below, the element defined by the sentence "including a..." does not exclude the existence of other same elements in the process, method, article or device that includes the element.

Through the description of the foregoing implementation manners, those skilled in the art can clearly understand that the foregoing embodiment methods can be implemented by means of software plus a necessary general hardware platform, or by hardware, but in many cases the former is better Implementation. Based on this understanding, the technical solution of the present disclosure essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to enable a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the method described in each embodiment of the present disclosure.

The embodiments of the present disclosure have been described above with reference to the accompanying drawings, but the present disclosure is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of the present disclosure, without departing from the purpose of the present disclosure and the scope of protection of the claims, many forms can be made, all of which fall within the protection of the present disclosure.

Claims

1. A coverage adjustment method, applied to a wireless access network node, including:

Adjust the coverage area of the partial beam of the radio access network node.

2. The method according to claim 1, wherein the adjusting the coverage of a part of the beam of the radio access network node comprises:

3. The method according to claim 2, wherein the coverage parameter includes at least one of the following: a coverage parameter of the first signal;

Coverage parameters of the associated signal of the first signal;

Coverage parameters of the first channel;

The coverage parameter of the associated channel of the first channel.

4. The method according to claim 1, wherein the adjusting the coverage of a part of the beam of the radio access network node comprises:

5. The method according to claim 4, wherein, before the adjusting the coverage of part of the beams of the radio access network node, the method further comprises:

Receiving the coverage analysis result sent by the core network node; or

6. The method according to claim 4, wherein the collection method of the network coverage data includes personnel collection and equipment automatic collection.

7. The method according to claim 4, wherein the network coverage data includes at least one of the following:

8. The method according to claim 4, wherein the analysis includes at least one of the following: determining the partial beam; Determine the coverage area to be adjusted for each beam in the partial beams.

9. The method of claim 4, wherein the adjustment is performed before the radio access network node is deployed, and the network coverage data is collected before the radio access network node is deployed; or

10. The method according to claim 4, wherein the network coverage data includes data and/or drive test data fed back by the terminal.

11. The method according to any one of claims 1 to 10, wherein the adjusting the coverage of a partial beam of the radio access network node includes at least one of the following:

12. The method according to any one of claims 1 to 10, wherein the adjustment is coordinated adjustment with the coverage of neighboring nodes.

13. The method according to claim 12, wherein the number of terminals covered by the network coverage edge area of the radio access network node after the adjustment is less than that of the radio access network node before the adjustment The number of terminals covered by the edge of the network coverage; and/or,

14. The method according to any one of claims 1 to 10, wherein the adjustment includes at least one of the following:

15. The method according to any one of claims 1 to 10, wherein, before the adjusting the coverage of the partial beams of the radio access network node, the method further comprises:

Get coverage parameters of adjacent nodes.

16. The method according to claim 15, wherein the adjusting the coverage of a part of the beam of the radio access network node comprises:

17. The method according to claim 15, wherein the coverage parameter of the neighboring cell is obtained through an interface between access network nodes, or the coverage parameter of the neighboring cell is the terminal measuring the neighboring cell or receiving the neighboring cell Reported after the cell broadcasts the message, where the neighboring cell corresponds to the neighboring node.

18. The method according to any one of claims 1 to 10, wherein, before the adjusting the coverage of a partial beam of the radio access network node, the method further comprises:

Or

19. The method of claim 18, wherein the adjustment decision is determined before the adjustment, and the adjustment is adjusted according to the adjustment decision; and/or

20. The method according to any one of claims 1 to 10, wherein the adjustment comprises: enhancing the coverage of the partial beam; or

Reduce the coverage of the partial beam; or

21. A wireless access network node, including: The adjustment module is configured to adjust the coverage area of a part of the beam of the radio access network node.

22. A radio access network node, comprising: a memory, a processor, and a program stored in the memory and capable of running on the processor, and when the program is executed by the processor, the implementation is as in claim 1 Steps in the coverage adjustment method described in any one of to 20.

23. A computer-readable storage medium having a program stored on the computer-readable storage medium, and when the program is executed by a processor, the method for adjusting the coverage range according to any one of claims 1 to 20 is implemented step.