WO2020156472A1 - 用于无线通信的电子设备和方法、计算机可读存储介质 - Google Patents
用于无线通信的电子设备和方法、计算机可读存储介质 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
Definitions
- This application relates to the field of wireless communication technology, and specifically relates to the protection of primary users under the coexistence of primary and secondary users. More specifically, it relates to an electronic device and method for wireless communication and a computer-readable storage medium.
- millimeter waves are electromagnetic waves with a wavelength from 10 mm to 1 mm and a frequency from 30 GHz to 300 GHz.
- millimeter wave transmission has the characteristics of extremely wide bandwidth, extremely narrow beam, and higher path loss.
- How to use the millimeter wave frequency band more effectively, and how to allocate spectrum resources reasonably and efficiently to avoid harmful interference to authorized users, that is, the primary user during the use of secondary users, are issues that need to be resolved when the millimeter wave frequency band is shared.
- an electronic device for wireless communication including: a processing circuit configured to: determine a first power restriction area of a first main user of a main system, the first power restriction area being The three-dimensional space defined by the directional beams from the first primary user to the third primary user of the primary system; and determining one or more secondary users in the first power limitation area.
- a method for wireless communication including: determining a first power limitation area of a first primary user of a primary system, and the first power limitation region is from the first primary user to the primary The three-dimensional space defined by the directional beam of the third primary user of the system; and determining one or more secondary users in the first power limitation area.
- an electronic device for wireless communication including: a processing circuit, configured to: obtain information of a power restriction area of a primary user and a maximum allowable transmit power of a secondary user from a spectrum management device Information, the power restriction area of the primary user corresponds to the three-dimensional space covered by the directional beam of the primary user; judging whether the secondary user is in the power restriction area based on the location of the secondary user; and where the secondary user is located in the power restriction area In this case, the transmission power of this user is restricted below the maximum allowable transmission power.
- a method for wireless communication including: acquiring information of a power restriction area of a primary user and information of a maximum allowable transmission power of a secondary user from a spectrum management device, and the primary user’s
- the power restriction area corresponds to the three-dimensional space covered by the directional beam of the primary user; determines whether the secondary user is in the power restriction area based on the location of the secondary user; and when the secondary user is located in the power restriction area, the secondary user
- the transmit power is limited to the maximum allowable transmit power.
- Computer program codes and computer program products for implementing the above-mentioned method for wireless communication and a computer on which the computer program codes for implementing the above-mentioned method for wireless communication are recorded are also provided Readable storage medium.
- the electronic device and method of the present application by setting the power limit area of the primary user, the range of secondary users to be considered can be reduced, the complexity and overhead of the spectrum management system can be significantly reduced, and at the same time, harmful interference to the primary user can be effectively avoided.
- Figure 1 shows a schematic example of a three-dimensional coexistence scene of primary and secondary systems
- Fig. 2 is a block diagram showing functional modules of an electronic device for wireless communication according to an embodiment of the present application
- Figure 3 shows a schematic diagram of the determination of the power restriction zone
- Fig. 4 is a block diagram showing functional modules of an electronic device for wireless communication according to an embodiment of the present application.
- FIG. 5 shows a schematic diagram of a situation where multiple power limitation areas overlap
- Figure 6 shows a schematic diagram of the information flow
- Fig. 7 is a block diagram showing functional modules of an electronic device for wireless communication according to another embodiment of the present application.
- Fig. 8 is a flowchart showing a method for wireless communication according to an embodiment of the present application.
- FIG. 9 is a flowchart showing a method for wireless communication according to another embodiment of the present application.
- Figure 10 shows a top view of the simulation scene
- Figure 11 shows an explanatory diagram of simulation parameter settings
- Figure 12 shows a graph of simulation results
- Figure 13 shows a schematic diagram of a millimeter wave frequency band spectrum sharing scenario in an urban environment
- FIG. 14 is a block diagram showing an example of a schematic configuration of a server to which the technology of the present disclosure can be applied;
- 15 is a block diagram showing a first example of a schematic configuration of an eNB or gNB to which the technology of the present disclosure can be applied;
- 16 is a block diagram showing a second example of a schematic configuration of an eNB or gNB to which the technology of the present disclosure can be applied;
- FIG. 17 is a block diagram showing an example of a schematic configuration of a smart phone to which the technology of the present disclosure can be applied;
- FIG. 18 is a block diagram showing an example of a schematic configuration of a car navigation device to which the technology of the present disclosure can be applied.
- FIG. 19 is a block diagram of an exemplary structure of a general personal computer in which the method and/or apparatus and/or system according to the embodiments of the present disclosure can be implemented.
- the spectrum resources of the authorized spectrum can be dynamically utilized between different wireless communication systems (including the primary system and the secondary system), and the dynamic use of the spectrum resources needs to be managed.
- a central management device or a spectrum management device can be set to manage the use of spectrum resources of the wireless communication system in its management area.
- the base stations and user equipment of these wireless communication systems are also referred to as users, where the base stations and user equipment of the primary system are referred to as primary users, and the base stations and user equipment of the secondary system are referred to as secondary users.
- the central management device allocates available spectrum resources among these users reasonably to ensure resource utilization efficiency and fairness, and at the same time to ensure the availability of secondary users. There is no harmful interference to the communication of the main user.
- SAS Spectrum Access System
- CBRS citizens Broadband Radio Service
- SMD Spectrum Management database
- GSC Group Spectrum Coordinator
- the primary users can backhaul broadband data through, for example, directional antennas or array antennas.
- Figure 1 shows the three-dimensional coexistence scene of primary and secondary systems. An illustrative example. Among them, the macro base station of the main system and each small base station have backhaul links using millimeter wave communication.
- the secondary users use single-antenna or multi-antenna omnidirectional antennas.
- the secondary users may be fixed wireless access points (base stations), pedestrians, vehicles, aerial drones, users on different floors, and so on.
- the secondary user If the secondary user is located in the half-wave angle beam range of the directional antenna of the primary user, it may cause harmful interference to the primary user, that is, cause harmful interference to the communication on the backhaul link. On the contrary, the secondary user located outside the range may cause harmful interference to the communication on the backhaul link.
- the main user has a low probability of harmful interference.
- FIG. 1 is only an example of a three-dimensional coexistence scenario, and the applicable scenario of the embodiment of the present application is not limited to this, but can be applied to any coexistence scenario where the primary user uses a directional antenna, and the interference to be considered
- the link of is not limited to the above-mentioned backhaul link.
- the communication link between the base station of the main system and the user equipment can also be considered.
- FIG. 2 shows a block diagram of functional modules of an electronic device 100 for wireless communication according to an embodiment of the present application.
- the electronic device 100 includes: a first determining unit 101 configured to determine the main system A power limited zone of the first primary user, where the first power limited zone is a three-dimensional space defined by the directional beams from the first primary user to the third primary user of the primary system; and the second determining unit 102, It is configured to determine one or more secondary users in the power limited area.
- the first determining unit 101 and the second determining unit 102 may be implemented by one or more processing circuits, and the processing circuit may be implemented as a chip or a processor, for example.
- the functional units in the electronic device shown in FIG. 2 are only logical modules divided according to the specific functions they implement, and are not used to limit specific implementations. The same applies to other electronic device examples to be described later.
- the electronic device 100 may be set on the central management device or spectrum management device side or communicably connected to the central management device or spectrum management device, for example. In addition, the electronic device 100 may also be set on the core network side.
- the central management device or spectrum management device described herein can be implemented as various functional entities, such as SAS, CxM, or GSC in the aforementioned CBRS architecture. In the CBRS architecture, it can also be set to implement a part of the functions of the electronic device 100 by SAS, and CxM to implement another part of the functions of the electronic device 100, and so on. It should be understood that these are not restrictive.
- the electronic device 100 may be implemented at the chip level, or may also be implemented at the device level.
- the electronic device 100 may work as a central management device or a spectrum management device itself, and may also include external devices such as a memory and a transceiver (not shown in the figure).
- the memory can be used to store the programs and related data information that the central management device or the spectrum management device needs to perform to implement various functions.
- the transceiver may include one or more communication interfaces to support communication with different devices (for example, base stations, other central management devices or spectrum management devices, user equipment, etc.). The implementation form of the transceiver is not specifically limited here.
- the first determining unit 101 may determine the power restriction area based on the location information and antenna configuration information of the first primary user and the third primary user. Still taking the scenario shown in FIG. 1 as an example, for example, the macro base station is the first primary user, and the small base station is the third primary user.
- Fig. 3 shows a schematic diagram of the determination of the power restriction zone.
- the height of the first primary user is h 1
- the height of the third primary user is h 2
- the half-wave angles of the directional beams sent by the first primary user and the third primary user are both ⁇
- the first primary user and the third primary user There is a backhaul link between the primary users, and the distance between the two is d PU .
- the conical three-dimensional space defined by the half-wave angle of the directional beam from the first primary user to the third primary user is the power limitation area, and when projected on a horizontal surface, it is an elliptical area shown by a dotted line S.
- the power limitation area can be calculated based on the position information of the first primary user and the third primary user, such as height, horizontal coordinates, and the respective antenna configuration information, such as the half-wave angle of the directional antenna.
- the area of the elliptical region S can be calculated as follows:
- Figure 3 also shows the power restriction area of the third primary user. Since the height of the third primary user in Figure 3 is lower than that of the first primary user, the power restriction area of the third primary user is in the air, and Figure 3 Shows a section of the power limit zone at a certain height in which there is a drone as a secondary user in this section.
- the second determining unit 102 may, for example, determine whether the secondary user is within the power limitation area based on at least the location information of the secondary user.
- the power restriction zone may not be calculated explicitly.
- the second determining unit 102 is configured to calculate the angle between the connection between the first primary user and the third primary user and the connection between the first primary user and the secondary user, and the included angle is smaller than the lobe width of the directional beam (That is, the half-wave angle) is half of the time, it is determined that the user is in the power limitation area.
- the electronic device 100 further includes a restriction unit 103 configured to restrict one or the other of the power restriction areas based on the communication quality requirements of the host system. The transmit power of multiple secondary users.
- the use of spectrum resources by the secondary system needs to be performed on the premise of ensuring the communication quality requirements of the primary system.
- the electronic device 100 of this embodiment limits the cumulative interference of the secondary user to the primary user within the allowable range by determining the power limitation area and limiting the transmission power of the secondary users in the power limitation area, thereby ensuring the communication quality of the primary system.
- the scope of the secondary system to be considered is limited to the secondary system in the power limited area, which reduces the complexity and overhead of spectrum management.
- the restriction unit 103 calculates the maximum interference power value that the first primary user can bear based on the communication quality requirements of the primary system, such as the expected signal to interference and noise ratio (Signal to Interference and Noise Ratio, SINR), and calculates the maximum interference power value based on the maximum interference power value. Calculate the maximum allowable transmit power of each secondary user in the power limit area.
- SINR Signal to Interference and Noise Ratio
- the calculation of the maximum interference power value that the first primary user can bear can be performed based on various communication system models.
- An example is given below.
- the threshold of the signal to interference and noise ratio of the first primary user is The threshold can be determined by the QoS (for example, bit error rate) required by the main system and the coding and modulation method adopted by the main user's transceiver.
- the transmit power and receive power of the first primary user are respectively with The gains of the transmitting antenna and the receiving antenna are G Tx and G Rx respectively , and N is the noise power, so the maximum interference power value I that the first primary user can bear is:
- the maximum allowable transmit power of this secondary user can be calculated as follows:
- the limiting unit 103 ensures that the cumulative maximum interference of multiple secondary users to the first primary user does not exceed the maximum interference power value, and allocates each secondary user to the first primary user.
- the maximum interference power generated by the user, and the maximum allowable transmit power of each secondary user is calculated based on the maximum interference power. Taking formula (4) as an example, the numerator should be the maximum interference power allocated to the corresponding secondary user.
- the maximum interference power value can be evenly distributed among multiple secondary users. For example, assuming that there are a total of N SU secondary users in the power limited area, the maximum interference that each secondary user can cause to the primary user is I th /N SU . Still taking formula (4) as an example, the maximum allowable transmit power of each secondary user is calculated as follows:
- Is the maximum transmit power of the i-th secondary user in the power restriction area; Is the distance between the i-th secondary user and the primary user; w i 1/N SU , is the weight of the harmful interference received by the primary user whose transmit power needs to be backed off for each secondary user. In this case, different secondary users’
- the power backoff value is the same, so
- the maximum interference power value can be allocated according to the type of the secondary user or the power adjustment capability. Since the types of secondary users may be different, such as base stations and user terminal equipment, the ability (or range) of each secondary user to adjust the transmit power is also different. Therefore, the pair can be allocated according to the type of secondary user or power adjustment ability. Harmful cumulative interference generated by the primary user. In this case, if equation (5) is used to calculate the maximum transmit power of each secondary user, each secondary user has its own weight w i , and the weight of each secondary user may not be the same.
- Adjusting the maximum allowable transmit power according to the types of different secondary users in the power restriction area can maximize the communication performance of each secondary user while ensuring the communication quality of the first primary user, and increase the accessibility of the secondary users in the power restriction area.
- the secondary user may include a secondary system base station and/or a secondary system user equipment.
- the first primary user and the secondary user use multiple antennas (such as array antennas), as an example, it is assumed that the first primary user receiver can use the interference suppression matrix for reception, and the secondary user transmitter and the first primary user receiver
- the channel matrix between is H 1
- the maximum allowable transmit power of the secondary user can be calculated by the following formula (assuming that there is only one secondary user in the power limitation area):
- the secondary user is located in the overlapping part of the power restriction area of multiple primary users.
- the primary user with a height of h 1 on the right (referred to as the first primary user) has the first primary user considering the backhaul link with the primary user of height h 2 (referred to as the third primary user).
- Power restriction zone the primary user with height h 3 on the left (referred to as the second primary user) has a second power restriction considering the backhaul link with the primary user with height h 4 (referred to as the fourth primary user) Area
- the first power restriction area and the second power restriction area have an overlapping part.
- the secondary users in the overlapping part may cause harmful interference to both the first primary user and the second primary user.
- the requirements of both the user and the second primary user limit the maximum allowable transmit power of the secondary user in the overlapping portion.
- the restriction unit 103 determines the first power restriction area of the first primary user as described above, and calculate the maximum allowable transmission power of the secondary users in the first power restriction area (for easy distinction, it is called the first maximum allowable transmission power).
- the second power restriction area of the second primary user which is a three-dimensional space defined by the directional beams from the second primary user to the fourth primary user, and calculate each of the second power restriction regions The second maximum allowable transmit power of the secondary user.
- the restriction unit 103 reduces the first maximum allowable transmission power and the second maximum allowable transmission power to the smaller of the specific secondary user.
- the maximum transmit power of the secondary user for each primary user is calculated in the above manner as Then the maximum allowable transmit power of this user is:
- the limiting unit 103 may also be configured to allocate spectrum resources for each secondary user and set the transmission power of each secondary user based on the maximum allowable transmission power of each secondary user. For example, for each secondary user, there is a minimum transmit power that guarantees the minimum QoS. If the maximum allowable transmit power is lower than the minimum transmit power, it means that the secondary user cannot access the network and will not be allocated spectrum resources. Otherwise, it can allocate spectrum resources. The limiting unit 103 sets the transmission power of each sub-system to be lower than the maximum allowable transmission power.
- the restriction unit 103 may also determine the maximum number of secondary users allowed in the power restriction area based on the minimum transmit power of the secondary users in the power restriction area when the QoS requirements of the secondary users are guaranteed. If the number of secondary users in the power limited area exceeds the maximum number, the secondary users with less interference to the primary users may be allocated spectrum resources first. This helps to improve the efficiency of spectrum utilization and increase the number of secondary users connected in the power limited area.
- the secondary users can be moving pedestrians, vehicles, drones, etc.
- the restriction unit 103 may also be configured to dynamically adjust the spectrum allocation and transmission power of the secondary user when the condition of the secondary user in the power restriction area changes to a predetermined degree.
- the status of the secondary user includes, for example, the number of secondary users in the power restriction area, the entry and exit of the secondary user in the power restriction area, the change in the transmission power of the secondary user, and the change in the communication quality requirement of the secondary user.
- a hysteresis parameter threshold can be set, and the time for the condition of the secondary users in the power limitation area to change by a predetermined degree exceeds the hysteresis parameter threshold Within a limited time, dynamically adjust the spectrum allocation and transmit power of the secondary user. This can effectively eliminate the impact of the rapid or reciprocating motion of the secondary user.
- the spectrum allocation and transmit power of secondary users with low mobility can be adjusted first, which can reduce the number of adjustments.
- a predetermined margin can be added to the communication quality requirements in the calculation.
- a predetermined margin can be added to the expected SINR.
- the expected SINR of the main system is 25dB
- the maximum interference power value can be calculated based on the SINR of 27dB with a 2dB margin.
- this information can be obtained from the Spectrum Management Database (SMD). That is, the primary user and the secondary user report their respective information to the SMD and the SMD stores the information.
- SMD Spectrum Management Database
- FIG. 6 shows a schematic diagram of the flow of information interaction between the primary system (PS), the secondary system (SS), the coexistence manager (CxM) and the SMD.
- PS primary system
- SS secondary system
- CxM coexistence manager
- SMD coexistence manager
- the secondary system reports the secondary user’s information to CxM, including location information (may be 3D location information), capability information, antenna configuration information, motion trajectory information, service type, etc.
- the secondary user includes the secondary system Base stations and user equipment.
- CxM passes this information to SMD.
- the main system also reports the main user's information to SMD.
- the main user's information includes, for example, location information, antenna configuration information, and modulation/coding format.
- CxM sends a request to retrieve the main user's information to SMD and receives the retrieved main user's information.
- CxM calculates the SINR threshold of the primary user based on the primary user's information, such as its system settings and QoS requirements, and also determines the power limit zone of each primary user.
- CxM sends a request to SMD to retrieve the information of the existing secondary user and receives the retrieved information of the existing secondary user.
- CxM checks whether the secondary user is located in the power restriction area, and calculates the maximum allowable transmit power of the secondary user in the power restriction area by considering the SINR threshold of the primary user.
- CxM compares the minimum transmit power calculated when the minimum QoS requirements of the secondary user are met with its corresponding maximum allowable transmit power to determine whether the secondary user can access the spectrum of the primary user, that is, it determines the current scenario Coexistence scheme.
- CxM then sends the coexistence scheme to the secondary system, which can include information such as the allocated channel and the maximum transmit power.
- CxM can also dynamically adjust the coexistence scheme in response to changes in the coexistence scenario.
- the spectrum management apparatus calculates the maximum allowable transmission power of the secondary user in the power restriction area based on the information of the current scene, thereby generating a coexistence scheme.
- the restriction unit 103 may pre-calculate the maximum allowable transmit power of the secondary users at various positions in the power restriction area based on at least the density of primary users in the primary system, the density of secondary users, and the communication quality requirements of the primary system. Among them, the calculation can be performed by model-based simulation, or by using formulas similar to formulas (2) and (4).
- the electronic device 100 broadcasts the information of the power limitation area, such as the range of its three-dimensional space and the information of the maximum allowable transmission power, to the secondary user, so that the secondary user can adjust the transmission power according to its own location.
- the secondary user judges by himself whether he is in the power restriction area of a certain primary user, and sets or adjusts his own transmission power according to the power restriction requirement of the power restriction area.
- the electronic device 100 can reduce the range of secondary users to be considered by setting the power limit area of the primary user, significantly reduce the complexity and overhead of the spectrum management system, and improve the efficiency of spectrum utilization. Effectively avoid harmful interference to the main user.
- FIG. 7 shows a block diagram of functional modules of an electronic device 200 according to another embodiment of the present application.
- the electronic device 200 includes: an acquiring unit 201 configured to acquire the power limit of the primary user from the spectrum management apparatus Area information and information about the maximum allowable transmit power of the secondary user, the power limitation area of the primary user corresponds to the three-dimensional space covered by the directional beam of the primary user; the determining unit 202 is configured to determine the secondary user based on the location of the secondary user Whether it is in the power restriction area; and the restriction unit 203 is configured to restrict the transmission power of the secondary user below the maximum allowable transmission power when the secondary user is in the power restriction area.
- the acquisition unit 201, the judgment unit 202, and the restriction unit 203 may be implemented by one or more processing circuits, and the processing circuit may be implemented as a chip or a processor, for example.
- the functional units in the electronic device shown in FIG. 7 are only logical modules divided according to the specific functions implemented by them, and are not used to limit specific implementation manners.
- the electronic device 200 may, for example, be provided on the secondary user side or be communicably connected to the secondary user.
- the secondary user can be the base station of the secondary system.
- the base station described in this application may also be a Transmit Receive Point (TRP) or an Access Point (Access Point, AP).
- TRP Transmit Receive Point
- AP Access Point
- the secondary user can also be the user equipment of the secondary system.
- the electronic device 200 may be implemented at the chip level, or may also be implemented at the device level.
- the electronic device 200 may work as a base station itself or a user equipment itself, and may also include external devices such as a memory, a transceiver (not shown) and the like.
- the memory can be used to store programs and related data information that the base station or user equipment needs to execute to implement various functions.
- the transceiver may include one or more communication interfaces to support communication with different devices (for example, other user equipment, other base stations, etc.), and the implementation form of the transceiver is not specifically limited here.
- the acquiring unit 201 may acquire the above-mentioned information through a broadcast message.
- the above-mentioned information can be calculated by the spectrum management device according to the scheme described in the first embodiment, and the limitations on the power restriction area and the maximum allowable transmission power are also applicable to this embodiment, and will not be repeated here.
- the electronic device 200 may also provide one or more of the location information, antenna configuration information, movement track information, and service type of the secondary user to the spectrum management device.
- the electronic device 200 can actively reduce the transmission power of the secondary user according to the power restriction area of the primary user and the power restriction requirements for the secondary user, thereby effectively avoiding harmful interference to the primary user and significantly reducing the spectrum management system. Complexity and overhead.
- FIG. 8 shows a flowchart of a method for wireless communication according to an embodiment of the present application.
- the method includes: determining a first power restriction area of a first primary user of the primary system (S11), and the first power restriction
- the zone is a three-dimensional space defined by the directional beams from the first primary user to the third primary user of the primary system; and one or more secondary users in the first power limitation zone are determined (S12).
- the secondary user may include a secondary system base station and/or a secondary system user equipment.
- the primary user and/or the secondary user can use an array antenna or a single antenna. This method can be executed on the spectrum management device side or the central management device side.
- the first power restriction zone may be determined based on the location information and antenna configuration information of the first primary user and the third primary user.
- it may be determined whether the secondary user is within the first power limitation area based on at least the location information of the secondary user.
- step S12 the angle between the connection between the first primary user and the third primary user and the connection between the first primary user and the secondary user can be calculated, and the included angle is smaller than the lobe width of the directional beam In half of the case, it is determined that the user is in the first power limitation area.
- the above method may also include the steps of obtaining one or more of the following from the spectrum management database: location information of the primary user, antenna configuration information of the primary user, location information of the secondary user, and secondary user User's antenna configuration information, secondary user's movement track information, service type. This information is used for various calculations and judgments in S11, S12 and other steps.
- the above method may further include step S13: limiting the transmission power of one or more secondary users in the first power restriction area based on the communication quality requirements of the primary system.
- the first maximum interference power value that the first primary user can bear can be calculated based on the communication quality requirements of the primary system, and the first maximum interference power value of each secondary user in the first power restriction area can be calculated based on the first maximum interference power value.
- the communication quality requirements include, for example, a desired signal to interference and noise ratio.
- the maximum interference power that each secondary user can generate is possible to allocate to the first primary user under the condition that the cumulative maximum interference power of multiple secondary users to the first primary user does not exceed the first maximum interference power value, and based on this
- the maximum interference power calculates the first maximum allowable transmit power of each secondary user.
- the first maximum interference power value may be evenly allocated among multiple secondary users, or the first maximum interference power value may be allocated according to the type or power adjustment capability of the secondary users. In the latter case, the allocation weights can be set for different secondary user equipments respectively.
- the maximum transmission power of the secondary users located in the overlapping parts of the multiple power restriction areas may take the minimum value of the maximum interference power value calculated for each primary user.
- the above method further includes step S14: based on the first maximum allowable transmission power of each secondary user, allocating spectrum resources for each secondary user and setting the transmission power of each secondary user.
- the above method further includes dynamically adjusting the spectrum allocation and the transmission power of the secondary user.
- a hysteresis parameter threshold can be set, and when the condition of the secondary users in the first power restriction zone changes by a predetermined degree for a time exceeding the hysteresis parameter threshold, the spectrum allocation and transmit power of the secondary users are dynamically adjusted
- the spectrum allocation and transmit power of secondary users with low mobility can be adjusted preferentially; the first maximum interference power value that the first primary user can bear can also be calculated by adding a predetermined margin on the basis of communication quality requirements.
- the maximum number of secondary users allowed in the first power restriction area may also be determined based on the minimum transmit power of the secondary users in the first power restriction area under the condition that the service quality requirements of the secondary users are guaranteed.
- the spectrum resources are allocated to secondary users with less interference to the first primary user first.
- the secondary users can adjust the transmission power according to their own location.
- FIG. 9 shows a flow chart of a method for wireless communication according to an embodiment of the present application.
- the method includes: acquiring information of a power restriction area of a primary user and information of a maximum allowable transmission power of a secondary user from a spectrum management device (S21), the power limitation area of the primary user corresponds to the three-dimensional space covered by the directional beam of the primary user; judging whether the secondary user is in the power limitation area based on the location of the secondary user (S22); and when the secondary user is located in the power limitation area In the case of the restricted area, the transmission power of the user is restricted below the maximum allowable transmission power (S23).
- This method can be executed on the secondary user side.
- the information can be obtained by broadcasting a message.
- the secondary user can also provide one or more of its location information, antenna configuration information, motion track information, and service type to the spectrum management device.
- Fig. 10 shows a top view of a simulation scene
- Fig. 11 shows an explanation of parameter settings.
- FIG. 13 shows a schematic diagram of a millimeter wave frequency band spectrum sharing scenario in an urban environment.
- the main system in the scene is a backhaul network based on millimeter waves.
- the transmitting antenna and receiving antenna of the main system are both deployed on the roof of the building, and the main user receiving and transmitting antennas have a certain height difference.
- the primary user’s transmitter and receiver use directional antennas to send and receive broadband data. Therefore, for each primary user in a pair of primary users, a power limitation area can be formed.
- the maximum allowable transmission power of the secondary users in the power limitation area will be restricted.
- Pedestrians on the ground, motor vehicles on the road, users on different floors of buildings, and drones in the sky can all be secondary users.
- the significant differences between the various sub-users are: 1) the heights of the various sub-users are different; 2) the power fallback capabilities of the various sub-users are different.
- the secondary user can access the same channel as the primary user under the premise of meeting the protection requirements for the primary user.
- the location information of the primary user, antenna configuration information, and modulation mode are pre-stored in the spectrum management database.
- the system can calculate the primary user’s SINR threshold based on the primary user information, and finally calculate the maximum accumulation that each primary user can bear Interference value.
- the secondary user After entering the scene, the secondary user first reports the location information, antenna configuration information, etc. to the coexistence manager (CxM), and then the CxM reports to the spectrum management database.
- CxM requests secondary user information from the spectrum database, and then calculates the maximum allowable transmit power of each secondary user on the premise of meeting the protection requirements for the primary user. Due to the different types of secondary users, their power back-off capabilities are also different, and the system can intelligently allocate power back-off values for different types of users.
- the power back-off value of the pedestrian's mobile terminal may be lower than the power back-off value of other types of secondary users (such as wireless access points).
- the maximum allowable transmission power of each secondary user it is judged whether the secondary user can access the same channel as the primary user. Specifically, the maximum allowable transmission power of the secondary user is greater than its required transmission power (in the case of meeting the minimum QoS requirements) The lowest transmit power value), you can access the same channel as the primary user, otherwise the secondary user cannot access the same channel as the primary user.
- the technology of the present disclosure can be applied to various products.
- the electronic device 100 may be implemented as any type of server, such as a tower server, a rack server, and a blade server.
- the electronic device 100 may be a control module installed on a server (such as an integrated circuit module including a single chip, and a card or blade inserted into a slot of a blade server).
- the electronic device 200 may be implemented as various base stations.
- the base station can be implemented as any type of evolved Node B (eNB) or gNB (5G base station).
- eNBs include, for example, macro eNBs and small eNBs.
- a small eNB may be an eNB that covers a cell smaller than a macro cell, such as a pico eNB, a micro eNB, and a home (femto) eNB.
- a similar situation can also be used for gNB.
- the base station may be implemented as any other type of base station, such as NodeB and base transceiver station (BTS).
- BTS base transceiver station
- the base station may include: a main body (also referred to as a base station device) configured to control wireless communication; and one or more remote radio heads (RRH) arranged in a different place from the main body.
- a main body also referred to as a base station device
- RRH remote radio heads
- various types of user equipment can operate as a base station by temporarily or semi-persistently performing base station functions.
- the electronic device 200 may also be implemented as various user devices.
- the user equipment may be implemented as a mobile terminal (such as a smart phone, a tablet personal computer (PC), a notebook PC, a portable game terminal, a portable/dongle type mobile router, and a digital camera) or a vehicle-mounted terminal (such as a car navigation device).
- the user equipment may also be implemented as a terminal (also referred to as a machine type communication (MTC) terminal) that performs machine-to-machine (M2M) communication.
- MTC machine type communication
- M2M machine-to-machine
- the user equipment may be a wireless communication module (such as an integrated circuit module including a single chip) installed on each of the aforementioned terminals.
- FIG. 14 is a block diagram showing an example of a schematic configuration of a server 700 to which the technology of the present disclosure can be applied.
- the server 700 includes a processor 701, a memory 702, a storage device 703, a network interface 704, and a bus 706.
- the processor 701 may be, for example, a central processing unit (CPU) or a digital signal processor (DSP), and controls the functions of the server 700.
- the memory 702 includes random access memory (RAM) and read only memory (ROM), and stores data and programs executed by the processor 701.
- the storage device 703 may include a storage medium such as a semiconductor memory and a hard disk.
- the network interface 704 is a communication interface for connecting the server 700 to the communication network 705.
- the communication network 705 may be a core network such as an evolved packet core network (EPC) or a packet data network (PDN) such as the Internet.
- EPC evolved packet core network
- PDN packet data network
- the bus 706 connects the processor 701, the memory 702, the storage device 703, and the network interface 704 to each other.
- the bus 706 may include two or more buses (such as a high-speed bus and a low-speed bus) each having a different speed.
- the first determining unit 101, the second determining unit 102 described with reference to FIG. 2, the limiting unit 103 described with reference to FIG. 4, etc. may be implemented by the processor 701.
- the processor 701 may implement the functions of the first determining unit 101 and the second determining unit 102 to determine the secondary users in the power restriction area, and determine the maximum allowable secondary users in the power restriction area by executing the functions of the restriction unit 103 Transmit power.
- FIG. 15 is a block diagram showing a first example of a schematic configuration of an eNB or gNB to which the technology of the present disclosure can be applied. Note that the following description takes eNB as an example, but it can also be applied to gNB.
- the eNB 800 includes one or more antennas 810 and a base station device 820.
- the base station device 820 and each antenna 810 may be connected to each other via an RF cable.
- Each of the antennas 810 includes a single or multiple antenna elements (such as multiple antenna elements included in a multiple input multiple output (MIMO) antenna), and is used for the base station device 820 to transmit and receive wireless signals.
- the eNB 800 may include multiple antennas 810.
- multiple antennas 810 may be compatible with multiple frequency bands used by eNB 800.
- FIG. 15 shows an example in which the eNB 800 includes multiple antennas 810, the eNB 800 may also include a single antenna 810.
- the base station device 820 includes a controller 821, a memory 822, a network interface 823, and a wireless communication interface 825.
- the controller 821 may be, for example, a CPU or a DSP, and operates various functions of higher layers of the base station device 820. For example, the controller 821 generates a data packet based on the data in the signal processed by the wireless communication interface 825, and transmits the generated packet via the network interface 823. The controller 821 may bundle data from a plurality of baseband processors to generate a bundled packet, and transfer the generated bundled packet. The controller 821 may have a logical function for performing control such as radio resource control, radio bearer control, mobility management, admission control, and scheduling. This control can be performed in conjunction with nearby eNBs or core network nodes.
- the memory 822 includes RAM and ROM, and stores programs executed by the controller 821 and various types of control data (such as a terminal list, transmission power data, and scheduling data).
- the network interface 823 is a communication interface for connecting the base station device 820 to the core network 824.
- the controller 821 may communicate with the core network node or another eNB via the network interface 823.
- the eNB 800 and the core network node or other eNBs may be connected to each other through a logical interface (such as an S1 interface and an X2 interface).
- the network interface 823 may also be a wired communication interface or a wireless communication interface for a wireless backhaul line. If the network interface 823 is a wireless communication interface, the network interface 823 can use a higher frequency band for wireless communication than the frequency band used by the wireless communication interface 825.
- the wireless communication interface 825 supports any cellular communication scheme, such as Long Term Evolution (LTE) and LTE-Advanced, and provides wireless connection to a terminal located in the cell of the eNB 800 via the antenna 810.
- the wireless communication interface 825 may generally include, for example, a baseband (BB) processor 826 and an RF circuit 827.
- the BB processor 826 can perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and perform layers (such as L1, medium access control (MAC), radio link control (RLC), and packet data convergence protocol (PDCP)) various types of signal processing.
- the BB processor 826 may have a part or all of the above-mentioned logical functions.
- the BB processor 826 may be a memory storing a communication control program, or a module including a processor and related circuits configured to execute the program.
- the update program can change the function of the BB processor 826.
- the module may be a card or a blade inserted into the slot of the base station device 820. Alternatively, the module can also be a chip mounted on a card or blade.
- the RF circuit 827 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via the antenna 810.
- the wireless communication interface 825 may include a plurality of BB processors 826.
- multiple BB processors 826 may be compatible with multiple frequency bands used by eNB 800.
- the wireless communication interface 825 may include a plurality of RF circuits 827.
- multiple RF circuits 827 may be compatible with multiple antenna elements.
- FIG. 15 shows an example in which the wireless communication interface 825 includes a plurality of BB processors 826 and a plurality of RF circuits 827, the wireless communication interface 825 may also include a single BB processor 826 or a single RF circuit 827.
- the transceiver of the electronic device 200 may be implemented by a wireless communication interface 825. At least part of the functions may also be implemented by the controller 821.
- the controller 821 may implement the limitation on the transmission power of the secondary user by executing the functions of the acquiring unit 201, the determining unit 202, and the limiting unit 203.
- FIG. 16 is a block diagram showing a second example of a schematic configuration of an eNB or gNB to which the technology of the present disclosure can be applied. Note that similarly, the following description takes eNB as an example, but it can also be applied to gNB.
- the eNB 830 includes one or more antennas 840, a base station device 850, and an RRH 860.
- the RRH 860 and each antenna 840 may be connected to each other via an RF cable.
- the base station device 850 and the RRH 860 may be connected to each other via a high-speed line such as an optical fiber cable.
- Each of the antennas 840 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used for the RRH 860 to transmit and receive wireless signals.
- the eNB 830 may include multiple antennas 840.
- multiple antennas 840 may be compatible with multiple frequency bands used by eNB 830.
- FIG. 16 shows an example in which the eNB 830 includes multiple antennas 840, the eNB 830 may also include a single antenna 840.
- the base station equipment 850 includes a controller 851, a memory 852, a network interface 853, a wireless communication interface 855, and a connection interface 857.
- the controller 851, the memory 852, and the network interface 853 are the same as the controller 821, the memory 822, and the network interface 823 described with reference to FIG. 15.
- the wireless communication interface 855 supports any cellular communication scheme (such as LTE and LTE-Advanced), and provides wireless communication to a terminal located in a sector corresponding to the RRH 860 via the RRH 860 and the antenna 840.
- the wireless communication interface 855 may generally include, for example, a BB processor 856.
- the BB processor 856 is the same as the BB processor 826 described with reference to FIG. 15 except that the BB processor 856 is connected to the RF circuit 864 of the RRH 860 via the connection interface 857.
- the wireless communication interface 855 may include a plurality of BB processors 856.
- multiple BB processors 856 may be compatible with multiple frequency bands used by eNB 830.
- FIG. 16 shows an example in which the wireless communication interface 855 includes a plurality of BB processors 856, the wireless communication interface 855 may also include a single BB processor 856.
- connection interface 857 is an interface for connecting the base station device 850 (wireless communication interface 855) to the RRH 860.
- the connection interface 857 may also be a communication module for connecting the base station device 850 (wireless communication interface 855) to the communication in the above-mentioned high-speed line of the RRH 860.
- the RRH 860 includes a connection interface 861 and a wireless communication interface 863.
- connection interface 861 is an interface for connecting the RRH 860 (wireless communication interface 863) to the base station device 850.
- the connection interface 861 may also be a communication module used for communication in the aforementioned high-speed line.
- the wireless communication interface 863 transmits and receives wireless signals via the antenna 840.
- the wireless communication interface 863 may generally include, for example, an RF circuit 864.
- the RF circuit 864 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via the antenna 840.
- the wireless communication interface 863 may include a plurality of RF circuits 864.
- multiple RF circuits 864 can support multiple antenna elements.
- FIG. 16 shows an example in which the wireless communication interface 863 includes a plurality of RF circuits 864, the wireless communication interface 863 may also include a single RF circuit 864.
- the transceiver of the electronic device 200 may be implemented by a wireless communication interface 825. At least part of the functions may also be implemented by the controller 821.
- the controller 821 may implement the limitation on the transmission power of the secondary user by executing the functions of the acquiring unit 201, the determining unit 202, and the limiting unit 203.
- FIG. 17 is a block diagram showing an example of a schematic configuration of a smart phone 900 to which the technology of the present disclosure can be applied.
- the smart phone 900 includes a processor 901, a memory 902, a storage device 903, an external connection interface 904, a camera 906, a sensor 907, a microphone 908, an input device 909, a display device 910, a speaker 911, a wireless communication interface 912, one or more Antenna switch 915, one or more antennas 916, bus 917, battery 918, and auxiliary controller 919.
- the processor 901 may be, for example, a CPU or a system on a chip (SoC), and controls the functions of the application layer and other layers of the smartphone 900.
- the memory 902 includes RAM and ROM, and stores data and programs executed by the processor 901.
- the storage device 903 may include a storage medium such as a semiconductor memory and a hard disk.
- the external connection interface 904 is an interface for connecting external devices such as a memory card and a universal serial bus (USB) device to the smartphone 900.
- the imaging device 906 includes an image sensor such as a charge coupled device (CCD) and a complementary metal oxide semiconductor (CMOS), and generates a captured image.
- the sensor 907 may include a group of sensors, such as a measurement sensor, a gyro sensor, a geomagnetic sensor, and an acceleration sensor.
- the microphone 908 converts the sound input to the smartphone 900 into an audio signal.
- the input device 909 includes, for example, a touch sensor, a keypad, a keyboard, a button, or a switch configured to detect a touch on the screen of the display device 910, and receives operations or information input from the user.
- the display device 910 includes a screen such as a liquid crystal display (LCD) and an organic light emitting diode (OLED) display, and displays an output image of the smartphone 900.
- the speaker 911 converts the audio signal output from the smartphone 900 into sound.
- the wireless communication interface 912 supports any cellular communication scheme (such as LTE and LTE-Advanced), and performs wireless communication.
- the wireless communication interface 912 may generally include, for example, a BB processor 913 and an RF circuit 914.
- the BB processor 913 may perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and perform various types of signal processing for wireless communication.
- the RF circuit 914 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via the antenna 916.
- the wireless communication interface 912 may be a chip module on which the BB processor 913 and the RF circuit 914 are integrated. As shown in FIG. 17, the wireless communication interface 912 may include a plurality of BB processors 913 and a plurality of RF circuits 914. Although FIG. 17 shows an example in which the wireless communication interface 912 includes a plurality of BB processors 913 and a plurality of RF circuits 914, the wireless communication interface 912 may also include a single BB processor 913 or a single RF circuit 914.
- the wireless communication interface 912 may support another type of wireless communication scheme, such as a short-range wireless communication scheme, a near field communication scheme, and a wireless local area network (LAN) scheme.
- the wireless communication interface 912 may include a BB processor 913 and an RF circuit 914 for each wireless communication scheme.
- Each of the antenna switches 915 switches the connection destination of the antenna 916 among a plurality of circuits included in the wireless communication interface 912 (for example, circuits for different wireless communication schemes).
- Each of the antennas 916 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna), and is used for the wireless communication interface 912 to transmit and receive wireless signals.
- the smart phone 900 may include a plurality of antennas 916.
- FIG. 17 shows an example in which the smart phone 900 includes a plurality of antennas 916, the smart phone 900 may also include a single antenna 916.
- the smart phone 900 may include an antenna 916 for each wireless communication scheme.
- the antenna switch 915 may be omitted from the configuration of the smartphone 900.
- the bus 917 connects the processor 901, memory 902, storage device 903, external connection interface 904, camera 906, sensor 907, microphone 908, input device 909, display device 910, speaker 911, wireless communication interface 912, and auxiliary controller 919 to each other. connection.
- the battery 918 supplies power to each block of the smart phone 900 shown in FIG. 17 via a feeder line, which is partially shown as a dashed line in the figure.
- the auxiliary controller 919 operates the minimum necessary functions of the smartphone 900 in the sleep mode, for example.
- the transceiver of the electronic device 200 may be implemented by the wireless communication interface 912. At least part of the functions may also be implemented by the processor 901 or the auxiliary controller 919.
- the processor 901 or the auxiliary controller 919 may implement the function of the acquiring unit 201, the determining unit 202, and the limiting unit 203 to limit the transmission power of the secondary user.
- FIG. 18 is a block diagram showing an example of a schematic configuration of a car navigation device 920 to which the technology of the present disclosure can be applied.
- the car navigation device 920 includes a processor 921, a memory 922, a global positioning system (GPS) module 924, a sensor 925, a data interface 926, a content player 927, a storage medium interface 928, an input device 929, a display device 930, a speaker 931, wireless
- GPS global positioning system
- the processor 921 may be, for example, a CPU or SoC, and controls the navigation function and other functions of the car navigation device 920.
- the memory 922 includes RAM and ROM, and stores data and programs executed by the processor 921.
- the GPS module 924 uses GPS signals received from GPS satellites to measure the position of the car navigation device 920 (such as latitude, longitude, and altitude).
- the sensor 925 may include a group of sensors, such as a gyro sensor, a geomagnetic sensor, and an air pressure sensor.
- the data interface 926 is connected to, for example, an in-vehicle network 941 via a terminal not shown, and acquires data (such as vehicle speed data) generated by the vehicle.
- the content player 927 reproduces content stored in a storage medium such as CD and DVD, which is inserted into the storage medium interface 928.
- the input device 929 includes, for example, a touch sensor, a button, or a switch configured to detect a touch on the screen of the display device 930, and receives an operation or information input from the user.
- the display device 930 includes a screen such as an LCD or an OLED display, and displays images of navigation functions or reproduced content.
- the speaker 931 outputs the sound of the navigation function or the reproduced content.
- the wireless communication interface 933 supports any cellular communication scheme, such as LTE and LTE-Advanced, and performs wireless communication.
- the wireless communication interface 933 may generally include, for example, a BB processor 934 and an RF circuit 935.
- the BB processor 934 may perform, for example, encoding/decoding, modulation/demodulation, and multiplexing/demultiplexing, and perform various types of signal processing for wireless communication.
- the RF circuit 935 may include, for example, a mixer, a filter, and an amplifier, and transmit and receive wireless signals via the antenna 937.
- the wireless communication interface 933 may also be a chip module on which the BB processor 934 and the RF circuit 935 are integrated. As shown in FIG.
- the wireless communication interface 933 may include a plurality of BB processors 934 and a plurality of RF circuits 935.
- FIG. 18 shows an example in which the wireless communication interface 933 includes a plurality of BB processors 934 and a plurality of RF circuits 935, the wireless communication interface 933 may also include a single BB processor 934 or a single RF circuit 935.
- the wireless communication interface 933 may support another type of wireless communication scheme, such as a short-range wireless communication scheme, a near field communication scheme, and a wireless LAN scheme.
- the wireless communication interface 933 may include a BB processor 934 and an RF circuit 935 for each wireless communication scheme.
- Each of the antenna switches 936 switches the connection destination of the antenna 937 among a plurality of circuits included in the wireless communication interface 933, such as circuits for different wireless communication schemes.
- Each of the antennas 937 includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna), and is used for the wireless communication interface 933 to transmit and receive wireless signals.
- the car navigation device 920 may include a plurality of antennas 937.
- FIG. 18 shows an example in which the car navigation device 920 includes a plurality of antennas 937, the car navigation device 920 may also include a single antenna 937.
- the car navigation device 920 may include an antenna 937 for each wireless communication scheme.
- the antenna switch 936 may be omitted from the configuration of the car navigation device 920.
- the battery 938 supplies power to each block of the car navigation device 920 shown in FIG. 18 via a feeder line, and the feeder line is partially shown as a dashed line in the figure.
- the battery 938 accumulates power supplied from the vehicle.
- the transceiver of the electronic device 200 may be implemented by the wireless communication interface 912. At least part of the functions may also be implemented by the processor 901 or the auxiliary controller 919.
- the processor 901 or the auxiliary controller 919 may implement the functions of the acquiring unit 201, the determining unit 202, and the limiting unit 203 to limit the transmission power of the secondary user.
- the technology of the present disclosure may also be implemented as an in-vehicle system (or vehicle) 940 including one or more blocks in the car navigation device 920, the in-vehicle network 941, and the vehicle module 942.
- vehicle module 942 generates vehicle data (such as vehicle speed, engine speed, and failure information), and outputs the generated data to the vehicle network 941.
- the present disclosure also proposes a program product storing machine-readable instruction codes.
- the instruction code is read and executed by a machine, the above method according to the embodiment of the present disclosure can be executed.
- a storage medium for carrying the above-mentioned program product storing machine-readable instruction codes is also included in the disclosure of the present disclosure.
- the storage medium includes, but is not limited to, a floppy disk, an optical disk, a magneto-optical disk, a memory card, a memory stick, and so on.
- a computer with a dedicated hardware structure (such as a general-purpose computer 1900 shown in FIG. 19) is installed from a storage medium or a network to the program constituting the software, and various programs are installed on the computer. When, can perform various functions and so on.
- a central processing unit (CPU) 1901 performs various processes in accordance with a program stored in a read only memory (ROM) 1902 or a program loaded from a storage portion 1908 to a random access memory (RAM) 1903.
- the RAM 1903 also stores data required when the CPU 1901 executes various processes and the like as necessary.
- the CPU 1901, the ROM 1902, and the RAM 1903 are connected to each other via a bus 1904.
- the input/output interface 1905 is also connected to the bus 1904.
- the following components are connected to the input/output interface 1905: input part 1906 (including keyboard, mouse, etc.), output part 1907 (including display, such as cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.), Storage part 1908 (including hard disk, etc.), communication part 1909 (including network interface card such as LAN card, modem, etc.).
- the communication section 1909 performs communication processing via a network such as the Internet.
- the driver 1910 can also be connected to the input/output interface 1905 as required.
- Removable media 1911 such as magnetic disks, optical disks, magneto-optical disks, semiconductor memories, etc. are mounted on the drive 1910 as needed, so that the computer programs read out therefrom are installed into the storage portion 1908 as needed.
- the program constituting the software is installed from a network such as the Internet or a storage medium such as a removable medium 1911.
- this storage medium is not limited to the removable medium 1911 shown in FIG. 19 that stores the program and is distributed separately from the device to provide the program to the user.
- removable media 1911 include magnetic disks (including floppy disks (registered trademarks)), optical disks (including compact disk read-only memory (CD-ROM) and digital versatile disks (DVD)), magneto-optical disks (including mini disks (MD) (registered Trademark)) and semiconductor memory.
- the storage medium may be a ROM 1902, a hard disk included in the storage portion 1908, etc., in which programs are stored and distributed to users together with the device containing them.
- each component or each step can be decomposed and/or recombined.
- decomposition and/or recombination should be regarded as equivalent solutions of the present disclosure.
- the steps of performing the above-mentioned series of processing can naturally be performed in chronological order in the order of description, but do not necessarily need to be performed in chronological order. Certain steps can be performed in parallel or independently of each other.
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Abstract
本公开提供了一种用于无线通信的电子设备、方法和计算机可读存储介质,该电子设备包括:处理电路,被配置为:确定主***的第一主用户的第一功率限制区,该第一功率限制区为由第一主用户到主***的第三主用户的定向波束所限定的三维空间;以及确定第一功率限制区内的一个或多个次用户。
Description
本申请要求于2019年2月1日提交中国专利局、申请号为201910105319.3、发明名称为“用于无线通信的电子设备和方法、计算机可读存储介质”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
本申请涉及无线通信技术领域,具体地涉及主次用户共存情况下对主用户的保护。更具体地,涉及一种用于无线通信的电子设备和方法以及计算机可读存储介质。
随着无线技术的飞速发展,可用的电磁频谱变得日益拥挤。而一些授权频段比如电视广播频段、毫米波频段的频谱利用率还很低。近年来,作为认知无线电的典型应用,动态频谱接入技术已成为研究热点,为提高频谱利用率开辟了一条新的途径。在采用动态频谱接入的情况下,授权用户、即主用户(primary user,PU)和次用户(secondary user,SU)共享授权频段的频谱资源。
例如,毫米波是波长从10毫米至1毫米、频率从30GHz至300GHz的电磁波。相比于低频段,毫米波传输具有极宽的带宽、极窄的波束、较高的路径损耗等特点。如何更加有效地使用毫米波频段,以及如何合理而高效地分配频谱资源以避免次用户使用过程中对授权用户、即主用户造成有害干扰是毫米波频段频谱共享时需要解决的问题。
发明内容
在下文中给出了关于本公开的简要概述,以便提供关于本公开的某些方面的基本理解。应当理解,这个概述并不是关于本公开的穷举性概述。它并不是意图确定本公开的关键或重要部分,也不是意图限定本公开的范围。其目的仅仅是以简化的形式给出某些概念,以此作为稍后论 述的更详细描述的前序。
根据本申请的一个方面,提供了一种用于无线通信的电子设备,包括:处理电路,被配置为:确定主***的第一主用户的第一功率限制区,该第一功率限制区为由第一主用户到主***的第三主用户的定向波束所限定的三维空间;以及确定第一功率限制区内的一个或多个次用户。
根据本申请的另一个方面,提供了一种用于无线通信的方法,包括:确定主***的第一主用户的第一功率限制区,该第一功率限制区为由第一主用户到主***的第三主用户的定向波束所限定的三维空间;以及确定第一功率限制区内的一个或多个次用户。
根据本申请的一个方面,提供了一种用于无线通信的电子设备,包括:处理电路,被配置为:从频谱管理装置获取主用户的功率限制区的信息和次用户的最大容许发射功率的信息,所述主用户的功率限制区对应于主用户的定向波束所覆盖的三维空间;基于次用户的位置判断该次用户是否在功率限制区内;以及在该次用户位于功率限制区内的情况下,将该次用户的发射功率限制在最大容许发射功率以下。
根据本申请的另一个方面,提供了一种用于无线通信的方法,包括:从频谱管理装置获取主用户的功率限制区的信息和次用户的最大容许发射功率的信息,所述主用户的功率限制区对应于主用户的定向波束所覆盖的三维空间;基于次用户的位置判断该次用户是否在功率限制区内;以及在该次用户位于功率限制区内的情况下,将该次用户的发射功率限制在最大容许发射功率以下。
依据本公开的其它方面,还提供了用于实现上述用于无线通信的方法的计算机程序代码和计算机程序产品以及其上记录有该用于实现上述用于无线通信的方法的计算机程序代码的计算机可读存储介质。
根据本申请的电子设备和方法通过设置主用户的功率限制区,可以缩小要考虑的次用户的范围,显著降低频谱管理***的复杂度和开销,同时有效避免对主用户造成有害干扰。
通过以下结合附图对本公开的优选实施例的详细说明,本公开的这些以及其他优点将更加明显。
为了进一步阐述本公开的以上和其它优点和特征,下面结合附图对本公开的具体实施方式作进一步详细的说明。所述附图连同下面的详细说明一起包含在本说明书中并且形成本说明书的一部分。具有相同的功能和结构的元件用相同的参考标号表示。应当理解,这些附图仅描述本公开的典型示例,而不应看作是对本公开的范围的限定。在附图中:
图1示出了主次***的三维共存场景的一个示意性示例;
图2是示出了根据本申请的一个实施例的用于无线通信的电子设备的功能模块框图;
图3示出了对功率限制区的确定的示意图;
图4是示出了根据本申请的一个实施例的用于无线通信的电子设备的功能模块框图;
图5示出了多个功率限制区交叠的情形的一个示意图;
图6示出了信息流程的一个示意图;
图7是示出了根据本申请的另一个实施例的用于无线通信的电子设备的功能模块框图;
图8是示出了根据本申请的一个实施例的用于无线通信的方法的流程图;
图9是示出了根据本申请的另一个实施例的用于无线通信的方法的流程图;
图10示出了仿真场景的俯视图;
图11示出了仿真参数设置的说明图
图12示出了仿真结果的曲线图;
图13示出了一个城市环境中毫米波频段频谱共享场景的示意图;
图14是示出可以应用本公开内容的技术的服务器的示意性配置的示例的框图;
图15是示出可以应用本公开内容的技术的eNB或gNB的示意性配置的第一示例的框图;
图16是示出可以应用本公开内容的技术的eNB或gNB的示意性配置的第二示例的框图;
图17是示出可以应用本公开内容的技术的智能电话的示意性配置的示例的框图;
图18是示出可以应用本公开内容的技术的汽车导航设备的示意性配置的示例的框图;以及
图19是其中可以实现根据本公开的实施例的方法和/或装置和/或***的通用个人计算机的示例性结构的框图。
在下文中将结合附图对本公开的示范性实施例进行描述。为了清楚和简明起见,在说明书中并未描述实际实施方式的所有特征。然而,应该了解,在开发任何这种实际实施例的过程中必须做出很多特定于实施方式的决定,以便实现开发人员的具体目标,例如,符合与***及业务相关的那些限制条件,并且这些限制条件可能会随着实施方式的不同而有所改变。此外,还应该了解,虽然开发工作有可能是非常复杂和费时的,但对得益于本公开内容的本领域技术人员来说,这种开发工作仅仅是例行的任务。
在此,还需要说明的一点是,为了避免因不必要的细节而模糊了本公开,在附图中仅仅示出了与根据本公开的方案密切相关的设备结构和/或处理步骤,而省略了与本公开关系不大的其他细节。
<第一实施例>
在共存场景下,授权频谱的频谱资源可以在不同的无线通信***(包括主***和次***)之间被动态利用,并且需要对频谱资源的动态使用进行管理。例如,可以设置中央管理装置或频谱管理装置来对其管理区域中的无线通信***的频谱资源使用进行管理。在本文中,还将这些无线通信***的基站和用户设备称为用户,其中,主***的基站和用户设备称为主用户,次***的基站和用户设备称为次用户。在中央管理装置或频谱管理装置的管理范围内,一般存在多个用户,中央管理装置将可 用的频谱资源在这些用户之间进行合理分配,以保证资源利用效率和公平性,同时确保次用户的存在不对主用户的通信造成有害干扰。
作为中央管理装置或频谱管理装置的示例,可以参照针对公民宽带无线电服务(Citizens Broadband Radio Service,CBRS)的频谱接入***(Spectrum Access System,SAS)。CBRS中主要的功能实体包括公民宽带无线电服务设备(Citizens Broadband Radio Service Devices,CBSD)和终端用户设备(End User Device,EUD)。用于频谱管理的功能实体例如包括SAS、频谱管理数据库(spectrum management database,SMD)、组频谱协调器(Group Spectrum Coordinator,GSC)等。
此外,在毫米波波段,波束具有较好的方向性,主用户之间例如通过定向天线或阵列天线来进行宽带数据的回传(backhaul),图1示出了主次***的三维共存场景的一个示意性示例。其中,主***的宏基站与各个小基站之间具有利用毫米波通信的回程链路。次用户使用单天线或多天线全向天线,次用户例如可以是固定的无线接入点(基站)、行人、车辆、空中的无人机、不同楼层的用户等等。如果次用户位于主用户的定向天线的半波角波束范围,则其可能会对主用户产生有害干扰,即,对回程链路上的通信造成有害干扰,反之,位于该范围以外的次用户对主用户产生有害干扰的概率较低。
应该理解,图1仅是三维共存场景的一个示例,本申请的实施例可以应用的场景并不限于此,而是可以应用于主用户使用定向天线的任何共存场景中,并且所要考虑的受干扰的链路也不限于上述回程链路,例如,还可以考虑主***的基站与用户设备之间的通信链路。
图2示出了根据本申请的一个实施例的用于无线通信的电子设备100的功能模块框图,如图2所示,电子设备100包括:第一确定单元101,被配置为确定主***的第一主用户的功率限制区(power limited zone),该第一功率限制区为由第一主用户到主***的第三主用户的定向波束所限定的三维空间;以及第二确定单元102,被配置为确定功率限制区内的一个或多个次用户。
其中,第一确定单元101和第二确定单元102可以由一个或多个处理电路实现,该处理电路例如可以实现为芯片、处理器。并且,应该理解,图2中所示的电子设备中的各个功能单元仅是根据其所实现的具体 功能而划分的逻辑模块,而不是用于限制具体的实现方式。这同样适用于随后要描述的其他电子设备的示例。
电子设备100例如可以设置在中央管理装置或频谱管理装置侧或者可通信地连接到中央管理装置或频谱管理装置,此外,电子设备100还可以设置在核心网侧。本文所述的中央管理装置或频谱管理装置可以实现为各种功能实体,例如前述CBRS架构中的SAS、CxM或GSC。在CBRS架构中,还可以设置为由SAS实现电子设备100的一部分功能,CxM实现电子设备100的另一部分功能,等等。应该理解,这些都不是限制性的。
还应指出,电子设备100可以以芯片级来实现,或者也可以以设备级来实现。例如,电子设备100可以工作为中央管理装置或频谱管理装置本身,并且还可以包括诸如存储器、收发器(图中未示出)等外部设备。存储器可以用于存储中央管理装置或频谱管理装置实现各种功能需要执行的程序和相关数据信息。收发器可以包括一个或多个通信接口以支持与不同设备(例如,基站、其他中央管理装置或频谱管理装置、用户设备等等)间的通信,这里不具体限制收发器的实现形式
此外,各个术语中的第一、第二等只是为了区分的需要和便于描述,并不具备任何其他含义,也不表示顺序。
例如,第一确定单元101可以基于第一主用户和第三主用户的位置信息和天线配置信息来确定功率限制区。仍以图1中所示的场景为例,例如,宏基站为第一主用户,小基站为第三主用户。图3示出了对功率限制区的确定的示意图。
其中,第一主用户的高度为h
1,第三主用户的高度为h
2,第一主用户和第三主用户发送的定向波束的半波角均为α,第一主用户和第三主用户之间具有回程链路,二者之间的间距为d
PU。如图3所示,由第一主用户到第三主用户的定向波束的半波角所限定的锥形三维空间为功率限制区,当投影到水平面上时,为虚线所示的椭圆形区域S。可以理解,该功率限制区可以基于第一主用户和第三主用户的位置信息比如高度、水平坐标等以及各自的天线配置信息比如定向天线的半波角等计算得到。例如,椭圆形区域S的面积可以如下计算:
其中β=arccos[(h
1-h
2)/d
PU]。
图3中还示出了第三主用户的功率限制区,由于图3中第三主用户的高度比第一主用户的高度低,因此第三主用户的功率限制区在空中,并且图3中示出了该功率限制区在某一高度处的截面,在该截面中存在一个作为次用户的无人机。
第二确定单元102例如可以至少基于次用户的位置信息来判断该次用户是否在功率限制区内。
在另一个示例中,可以不显式地计算功率限制区。第二确定单元102被配置为计算第一主用户与第三主用户的连线和第一主用户与次用户的连线之间的夹角,并且在该夹角小于定向波束的波瓣宽度(即,半波角)的一半的情况下,判断该次用户在功率限制区内。
图4示出了电子设备100的另一个功能模块框图,与图2相比,电子设备100还包括限制单元103,被配置为基于主***的通信质量要求,来限制功率限制区中的一个或多个次用户的发射功率。
在共存场景下,次***对频谱资源的使用需要在保证主***的通信质量要求的前提下进行。本实施例的电子设备100通过确定功率限制区,并且限制功率限制区内的次用户的发射功率,将次用户对主用户的累积干扰限制在容许范围内,保证了主***的通信质量。并且,将要考虑的次***的范围限制为功率限制区内的次***,减轻了频谱管理的复杂度和开销。
例如,限制单元103基于主***的通信质量要求比如期望信干噪比(Signal to Interference and Noise Ratio,SINR),计算第一主用户能够承受的最大干扰功率值,并基于该最大干扰功率值来计算功率限制区内各个次用户的最大容许发射功率。
关于第一主用户能够承受的最大干扰功率值的计算,可以基于各种通信***模型来执行,下面给出一个示例。假设第一主用户的信干噪比 的阈值为
该阈值可由主***要求的QoS(例如误码率)以及主用户收发信机采用的编码与调制方式来确定。第一主用户发射功率和接收功率分别为
和
发射天线和接收天线增益分别为G
Tx和G
Rx,N为噪声功率,则第一主用户能够承受的最大干扰功率值I为:
在功率限制区内仅有一个次用户时,该次用户的最大容许发射功率可以如下计算:
而当功率限制区内有多个次用户时,限制单元103在保证多个次用户对第一主用户的累积最大干扰不超过最大干扰功率值的情况下,分配各个次用户能够对第一主用户产生的最大干扰功率,并基于该最大干扰功率计算各个次用户的最大容许发射功率。以式(4)为例,此时分子上应为分配给相应次用户的其能够产生的最大干扰功率。
作为一种方式,可以在多个次用户间平均分配最大干扰功率值。例如,假设功率限制区内总共有N
SU个次用户,则每个次用户最大可以对主 用户造成的干扰为I
th/N
SU。仍以式(4)为例,每个次用户的最大容许发射功率计算如下:
其中,
为功率限制区内第i个次用户的最大发射功率;
为该第i个次用户距离主用户的距离;w
i=1/N
SU,为每个次用户发射功率需要回退的主用户受到的有害干扰的权重,由于这种情况为不同次用户的功率回退值相同,因此
作为另一种方式,可以根据次用户的类型或功率调整能力来分配最大干扰功率值。由于次用户的类型可能不同,比如可以为基站和用户终端设备,每个次用户可调整发射功率的能力(或范围)也有所不同,因此,可根据次用户的类型或功率调整能力来分配对主用户产生的有害累计干扰。在这种情况下,如果使用式(5)计算各个次用户的最大发射功率,则每个次用户有其自己的权重w
i,各个次用户的权重不一定相同。
根据功率限制区内不同次用户的类型调整其最大容许发射功率,可以在保障第一主用户通信质量的前提下最大程度提高每个次用户的通信性能,增加功率限制区内可接入的次用户数目。应该理解,次用户可以包括次***基站和/或次***用户设备。
此外,当第一主用户和次用户均使用多天线(例如阵列天线)时,作为示例,假定第一主用户接收机能够使用干扰抑制矩阵进行接收,次 用户发射机和第一主用户接收机之间的信道矩阵为H
1,次用户的最大容许发射功率则可由以下公式计算得到(假设功率限制区中仅有一个次用户):
其中,
式(6)和式(7)中各个符号的定义与前文式(2)和式(4)中相同,在此不再重复。相应地,当功率限制区中有多个次用户时,每个次用户的最大容许发射功率计算如下:
应该注意,前文中的各项描述以及后文中将要进行的描述针对主用户和次用户采用阵列天线的情形同样适用。
还存在次用户位于多个主用户的功率限制区的交叠部分中的情形。如图5所示,右侧高度为h
1的主用户(称为第一主用户)在考虑与高度h
2的主用户(称为第三主用户)的回程链路的情况下具有第一功率限制区,左侧高度为h
3的主用户(称为第二主用户)在考虑与高度h
4的主用户(称为第四主用户)的回程链路的情况下具有第二功率限制区,并且第一功率限制区和第二功率限制区具有交叠部分,该交叠部分中的次用户可能对第一主用户和第二主用户两者产生有害干扰,因此应该按照第一主用户和第二主用户两者的要求来限制交叠部分中的次用户的最大容许发射功率。
首先,如前所述确定第一主用户的第一功率限制区,并计算第一功率限制区中的次用户的最大容许发射功率(为了便于区分,称为第一最大容许发射功率)。类似地,确定第二主用户的第二功率限制区,该第二功率限制区为由第二主用户到第四主用户的定向波束所限定的三维空 间,并计算第二功率限制区中各个次用户的第二最大容许发射功率。当特定次用户存在于第一功率限制区和第二功率限制区的交叠部分中时,限制单元103针对该特定次用户,将第一最大容许发射功率和第二最大容许发射功率中较小的一个作为该特定次用户的最大容许发射功率。
此外,限制单元103还可以被配置为基于各个次用户的最大容许发射功率,为各个次用户分配频谱资源以及设置各个次用户的发射功率。例如,对于各个次用户而言,存在保证达到其最低QoS的最低发射功率,如果最大容许发射功率低于该最低发射功率,说明该次用户不能接入网络,将不会为其分配频谱资源,否则可以为其分配频谱资源。限制单元103设置各个次***的发射功率以使其低于最大容许发射功率。
另一方面,限制单元103还可以基于功率限制区内的次用户在保证该次用户的QoS要求的情况下的最低发射功率来确定功率限制区中容许的次用户的最大数目。如果功率限制区中的次用户的数目超过了该最大数目,则可以优先为对主用户的干扰较小的次用户分配频谱资源。这样有利于提高频谱利用效率,增大功率限制区中接入的次用户的数目。
如前所述,次用户可以是移动的行人、车辆、无人机等等,当次用户发生移动时,可能需要进行频谱分配方案的调整。为此,限制单元103还可以被配置为在功率限制区内的次用户的状况发生预定程度的变化的情况下,动态地调整次用户的频谱分配和发射功率。这里,次用户的状况例如包括功率限制区中次用户的数目、次用户出入功率限制区、次用户的发射功率改变、次用户的通信质量要求改变等。当次用户的状况发生预定程度的变化时,说明很可能之前的频谱分配方案不再适用,因此需要进行调整。
此外,为了避免频繁的调整,提高频谱管理***的稳定性,降低***开销,例如可以设置迟滞参数门限,并且在功率限制区中的次用户的状况发生预定程度的变化的时间超过该迟滞参数门限时,动态地调整次用户的频谱分配和发射功率。这样可以有效地消除次用户的快速运动或往复运动带来的影响。
另一方面,在进行调整时,可以优先调整移动性低的次用户的频谱分配和发射功率,这样可以减少调整的次数。
上文中描述了基于主***的通信质量要求来计算主用户能够承受的最大干扰功率值,为了确保主***的通信质量,在该计算中还可以在通信质量要求的基础上加上预定裕量。例如,当使用期望SINR作为通信质量要求时,可以在该期望SINR上加上预定裕量。示例性地,主***的期望SINR为25dB,可以基于具有2dB裕量的27dB的SINR进行最大干扰功率值的计算。通过加入该预定裕量,当次用户出入功率限制区时,可以降低要进行频谱分配方案调整的可能性。
在前文所述的计算中需要如下信息中的一项或多项:主用户的位置信息、主用户的天线配置信息、次用户的位置信息、次用户的天线配置信息、次用户的运动轨迹信息、业务类型,这些信息可以从频谱管理数据库(SMD)获得。即,主用户和次用户将各自的信息上报至SMD并由SMD存储这些信息。
为了便于理解,图6示出了主***(Primary System,PS)、次***(Secondary System,SS)、共存管理器(CxM)和SMD之间的信息交互的流程的一个示意图。但是,信息流程并不限于此,而是可以根据实际应用有所改变,并且所涉及的功能实体也不限于CxM和SMD,这里仅是示例。
如图6所示,次***将次用户的信息上报至CxM,例如包括位置信息(可以是3维位置信息)、能力信息、天线配置信息、运动轨迹信息、业务类型等,次用户包括次***的基站和用户设备。CxM将这些信息传递至SMD。类似地,主***也将主用户的信息上报至SMD。主用户的信息例如包括位置信息、天线配置信息和调制/编码格式等。
随后,CxM向SMD发送检索主用户的信息的请求并收到所检索的主用户的信息。CxM基于主用户的信息比如其***设置和QoS要求计算 出主用户的SINR阈值,此外还确定出各个主用户的功率限制区。接下来,CxM向SMD发送检索已有次用户的信息的请求并收到所检索的已有次用户的信息。CxM检查次用户是否位于功率限制区内,并且通过考虑主用户的SINR阈值来计算功率限制区内的次用户的最大容许发射功率。CxM将在满足次用户的最低QoS要求的情况下计算的最低发射功率与其对应的最大容许发射功率相比较,从而确定该次用户能否接入主用户的频谱,即,确定了当前场景下的共存方案。CxM随后将共存方案发送给次***,其中可以包括分配的信道、最大发射功率等信息。CxM还可以响应于共存场景的改变来动态地调整共存方案。
在该示例中,频谱管理装置基于当前场景的信息来计算功率限制区内次用户的最大容许发射功率,从而产生共存方案。
在另一个示例中,限制单元103可以至少基于主***中主用户的密度、次用户的密度以及主***的通信质量要求,预先计算功率限制区中各个位置处次用户的最大容许发射功率。其中,该计算可以通过基于模型的仿真进行,或者使用类似于式(2)和式(4)的公式进行。
电子设备100将功率限制区的信息比如其三维空间的范围和最大容许发射功率的信息广播给次用户,以使得次用户能够根据自身的位置来调整发射功率。根据该示例,次用户自行判断是否处在某个主用户的功率限制区中,并且根据该功率限制区的功率限制要求来设置或调整其自身的发射功率。
综上所述,根据该实施例的电子设备100通过设置主用户的功率限制区,可以缩小要考虑的次用户的范围,显著降低频谱管理***的复杂度和开销,提高频谱利用高效率,同时有效避免对主用户造成有害干扰。
<第二实施例>
图7示出了根据本申请的另一个实施例的电子设备200的功能模块框图,如图7所示,电子设备200包括:获取单元201,被配置为从频谱管理装置获取主用户的功率限制区的信息和次用户的最大容许发射功率的信息,该主用户的功率限制区对应于主用户的定向波束所覆盖的三维空间;判断单元202,被配置为基于次用户的位置判断该次用户是否在功率限制区内;以及限制单元203,被配置为在该次用户位于功率限制区内 的情况下,将该次用户的发射功率限制在最大容许发射功率以下。
其中,获取单元201、判断单元202和限制单元203可以由一个或多个处理电路实现,该处理电路例如可以实现为芯片、处理器。并且,应该理解,图7中所示的电子设备中的各个功能单元仅是根据其所实现的具体功能而划分的逻辑模块,而不是用于限制具体的实现方式。
电子设备200例如可以设置在次用户侧或者可通信地连接到次用户。该次用户可以是次***的基站。本申请中所述的基站也可以是收发点(Transmit Receive Point,TRP)或者接入点(Access Point,AP)。该次用户也可以是次***的用户设备。
这里,还应指出,电子设备200可以以芯片级来实现,或者也可以以设备级来实现。例如,电子设备200可以工作为基站本身或者用户设备本身,并且还可以包括诸如存储器、收发器(未示出)等外部设备。存储器可以用于存储基站或用户设备实现各种功能需要执行的程序和相关数据信息。收发器可以包括一个或多个通信接口以支持与不同设备(例如,其他用户设备、其他基站等等)间的通信,这里不具体限制收发器的实现形式。
例如,获取单元201可以通过广播消息来获取上述信息。其中,上述信息可以由频谱管理装置根据第一实施例中所描述的方案计算得到,有关功率限制区和最大容许发射功率的限定也同样适用于本实施例,在此不再重复。
电子设备200还可以将次用户的位置信息、天线配置信息、运动轨迹信息、业务类型中的一项或多项提供给频谱管理装置。
根据本实施例的电子设备200可以通过根据主用户的功率限制区和对次用户的功率限制要求,主动降低次用户的发射功率,从而有效避免对主用户造成有害干扰,显著降低频谱管理***的复杂度和开销。
<第三实施例>
在上文的实施方式中描述用于无线通信的电子设备的过程中,显然还公开了一些处理或方法。下文中,在不重复上文中已经讨论的一些细节的情况下给出这些方法的概要,但是应当注意,虽然这些方法在描述 用于无线通信的电子设备的过程中公开,但是这些方法不一定采用所描述的那些部件或不一定由那些部件执行。例如,用于无线通信的电子设备的实施方式可以部分地或完全地使用硬件和/或固件来实现,而下面讨论的用于无线通信的方法可以完全由计算机可执行的程序来实现,尽管这些方法也可以采用用于无线通信的电子设备的硬件和/或固件。
图8示出了根据本申请的一个实施例的用于无线通信的方法的流程图,该方法包括:确定主***的第一主用户的第一功率限制区(S11),该第一功率限制区为由第一主用户到主***的第三主用户的定向波束所限定的三维空间;以及确定第一功率限制区内的一个或多个次用户(S12)。其中,次用户可以包括次***基站和/或次***用户设备。主用户和/或次用户可以采用阵列天线或单天线。该方法可以在频谱管理装置侧或中央管理装置侧执行。
例如,在步骤S11中,可以基于第一主用户和第三主用户的位置信息和天线配置信息来确定第一功率限制区。在步骤S12中,可以至少基于次用户的位置信息来判断该次用户是否在所述第一功率限制区内。
或者,在步骤S12中,可以计算第一主用户与第三主用户的连线和第一主用户与次用户的连线之间的夹角,并且在该夹角小于定向波束的波瓣宽度的一半的情况下,判断该次用户在第一功率限制区内。
虽然图8中未示出,但是上述方法还可以包括从频谱管理数据库获取如下中的一项或多项的步骤:主用户的位置信息、主用户的天线配置信息、次用户的位置信息、次用户的天线配置信息、次用户的运动轨迹信息、业务类型。这些信息用于S11、S12中以及其他步骤中的各种计算和判断。
如图8中的虚线框所示,上述方法还可以包括步骤S13:基于主***的通信质量要求,来限制第一功率限制区中的一个或多个次用户的发射功率。例如,可以基于主***的通信质量要求,来计算第一主用户能够承受的第一最大干扰功率值,并基于该第一最大干扰功率值来计算第一功率限制区中各个次用户的第一最大容许发射功率。通信质量要求例如包括期望的信干噪比。
具体地,可以在保证多个次用户对第一主用户的累积最大干扰不超过第一最大干扰功率值的情况下,分配各个次用户能够对第一主用户产 生的最大干扰功率,并基于该最大干扰功率计算各个次用户的第一最大容许发射功率。其中,可以在多个次用户间平均分配第一最大干扰功率值,也可以根据次用户的类型或功率调整能力来分配第一最大干扰功率值。在后一种情形下,可以分别为不同的次用户设备设置分配权重。
当存在多个主用户的功率限制区时,位于多个功率限制区的交叠部分中的次用户的最大发射功率可以取针对各个主用户计算出的最大干扰功率值的最小值。
如图8中的另一个虚线框所示,上述方法还包括步骤S14:基于各个次用户的第一最大容许发射功率,为各个次用户分配频谱资源以及设置各个次用户的发射功率。
在第一功率限制区中的次用户的状况发生预定程度的变化的情况下,上述方法还包括动态地调整次用户的频谱分配和发射功率。
为了避免频繁的调整,可以设置迟滞参数门限,并且在第一功率限制区中的次用户的状况发生预定程度的变化的时间超过该迟滞参数门限时,动态地调整次用户的频谱分配和发射功率;可以优先调整移动性低的次用户的频谱分配和发射功率;还可以在计算第一主用户能够承受的第一最大干扰功率值时,在通信质量要求的基础上加上预定裕量。
另一方面,还可以基于第一功率限制区内的次用户的在保证该次用户的服务质量要求的情况下的最低发射功率来确定第一功率限制区中容许的次用户的最大数目。在第一功率限制区中的次用户的数目超过最大数目时,优先为对第一主用户的干扰较小的次用户分配频谱资源。
此外,也可以至少基于主***中主用户的密度、次用户的密度以及通信质量要求,预先计算第一功率限制区中各个位置处次用户的第一最大容许发射功率,并将第一功率限制区的范围和第一最大容许发射功率的信息广播给次用户,以使得次用户根据自身的位置来调整发射功率。
图9示出了根据本申请的一个实施例的用于无线通信的方法的流程图,该方法包括:从频谱管理装置获取主用户的功率限制区的信息和次用户的最大容许发射功率的信息(S21),该主用户的功率限制区对应于主用户的定向波束所覆盖的三维空间;基于次用户的位置判断该次用户是否在功率限制区内(S22);以及在该次用户位于功率限制区内的情况下,将该次用户的发射功率限制在最大容许发射功率以下(S23)。该方 法可以在次用户侧执行。
在步骤S21中,可以通过广播消息来获取所述信息。此外,次用户还可以将其位置信息、天线配置信息、运动轨迹信息、业务类型中的一项或多项提供给频谱管理装置。
注意,上述各个方法可以结合或单独使用,其细节在第一至第二实施例中已经进行了详细描述,在此不再重复。
为了便于理解,以下给出一个仿真示例。图10示出了仿真场景的俯视图,图11示出了参数设置的说明。
首先,通过仿真来研究不同的主次用户高度差对次用户最大发射功率的影响。假设仿真中有50个主用户,且主用户的高度如图11所示在20m至100m之间随机分布,次用户的高度分别为1.5m、500m和1000米,分别计算次用户的最大发射功率。从仿真结果可以看出看出随着主次用户之间的高度差的增大,次用户允许的最大发射功率越来越大,即,对次用户最大发射功率的限制越来越小。当主次***高度差到达一个门限值Δh
th时,次用户对主用户的干扰可以忽略不计,即不必对次用户的最大发射功率进行限制。
其次,通过仿真来研究不同主用户密度对次用户最大发射功率的影响。分别设置仿真场景中主用户的数目为5、50、500,相应地,仿真区域内主用户密度分别为5/km
2,50/km
2,500/km
2。仿真结果显示,三个不同的主用户密度场景下,功率限制区的总面积占整个仿真区域总面积的比例分别为0.2%,7.2%,57.3%。可见随着主用户密度的增大,对于次用户最大发射功率的限制越来越大,次用户的最大容许发射功率则越来越小。
接着,通过仿真研究了功率限制区内有多个次用户的情形。设置功率限制区内的次用户数目在1~100之间变化,假设每个次用户均分对主用户产生的累计干扰,可以计算出次用户的平均最大容许发射功率。仿真结果如图12所示。可以看出,随着功率限制区内次用户的增多,次用户的平均最大容许发射功率将会减小。
此外,图13示出了一个城市环境中毫米波频段频谱共享场景的示意图。场景中主***是基于毫米波的回传网络。主***的发射天线与接收天线均部署在建筑物楼顶,主用户收发天线存在一定的高度差。主用户发射机接收机之间通过定向天线收发宽带数据,因此对于每一对主用户中的一个主用户都能够形成一个功率限制区,位于该功率限制区内的次用户的最大容许发射功率会受到限制。地面上的行人、道路上的机动车、建筑物里不同楼层的用户以及天空中的无人机都可以是次用户。各类次用户的显著区别是:1)各类次用户的高度不同;2)各类次用户的功率回退能力不同。次用户可以在满足对主用户保护要求的前提下接入与主用户相同的频道。
主用户的位置信息、天线配置信息和调制方式等信息预先保存在频谱管理数据库中,***可根据主用户信息计算主用户SINR门限值,并最终计算出每个主用户所能承受的最大累积干扰值。次用户进入场景中之后首先将位置信息、天线配置信息等上报给共存管理器(CxM),然后由CxM上报给频谱管理数据库。CxM向频谱数据库请求次用户信息,然后在满足对主用户保护要求的前提下计算每个次用户的最大容许发射功率。由于次用户的类别不同,其功率回退的能力也不同,***可以根据不同类型的用户智能地为其分配功率回退值。例如在此共存场景中,行人的移动终端的功率回退值可以低于其他类型的次用户(如无线接入点)的功率回退值。最后,根据每个次用户的最大容许发射功率判断次用户是否能够接入与主用户相同的信道,具体地,次用户最大容许发射功率大于其所需发射功率(满足最低QoS要求的情况下的最低发射功率值)时,就可以接入与主用户相同的频道,否则该次用户不能接入与主用户相同的频道。
本公开内容的技术能够应用于各种产品。
例如,电子设备100可以被实现为任何类型的服务器,诸如塔式服务器、机架式服务器以及刀片式服务器。电子设备100可以为安装在服务器上的控制模块(诸如包括单个晶片的集成电路模块,以及***到刀片式服务器的槽中的卡或刀片(blade))。
例如,电子设备200可以被实现为各种基站。基站可以被实现为任何类型的演进型节点B(eNB)或gNB(5G基站)。eNB例如包括宏eNB和小eNB。小eNB可以为覆盖比宏小区小的小区的eNB,诸如微微eNB、微eNB和家庭(毫微微)eNB。对于gNB也可以由类似的情形。代替地,基站可以被实现为任何其他类型的基站,诸如NodeB和基站收发台(BTS)。基站可以包括:被配置为控制无线通信的主体(也称为基站设备);以及设置在与主体不同的地方的一个或多个远程无线头端(RRH)。另外,各种类型的用户设备均可以通过暂时地或半持久性地执行基站功能而作为基站工作。
电子设备200也可以被实现为各种用户设备。用户设备可以被实现为移动终端(诸如智能电话、平板个人计算机(PC)、笔记本式PC、便携式游戏终端、便携式/加密狗型移动路由器和数字摄像装置)或者车载终端(诸如汽车导航设备)。用户设备还可以被实现为执行机器对机器(M2M)通信的终端(也称为机器类型通信(MTC)终端)。此外,用户设备可以为安装在上述终端中的每个终端上的无线通信模块(诸如包括单个晶片的集成电路模块)。
[关于服务器的应用示例]
图14是示出可以应用本公开内容的技术的服务器700的示意性配置的示例的框图。服务器700包括处理器701、存储器702、存储装置703、网络接口704以及总线706。
处理器701可以为例如中央处理单元(CPU)或数字信号处理器(DSP),并且控制服务器700的功能。存储器702包括随机存取存储器(RAM)和只读存储器(ROM),并且存储数据和由处理器701执行的程序。存储装置703可以包括存储介质,诸如半导体存储器和硬盘。
网络接口704为用于将服务器700连接到通信网络705的通信接口。通信网络705可以为诸如演进分组核心网(EPC)的核心网或者诸如因 特网的分组数据网络(PDN)。
总线706将处理器701、存储器702、存储装置703和网络接口704彼此连接。总线706可以包括各自具有不同速度的两个或更多个总线(诸如高速总线和低速总线)。
在图14所示的服务器700中,参照图2所描述的第一确定单元101、第二确定单元102和参照图4描述的限制单元103等可以由处理器701实现。例如,处理器701可以通过执行第一确定单元101和第二确定单元102的功能来实现功率限制区内次用户的确定,通过执行限制单元103的功能来确定功率限制区内次用户的最大容许发射功率。
[关于基站的应用示例]
(第一应用示例)
图15是示出可以应用本公开内容的技术的eNB或gNB的示意性配置的第一示例的框图。注意,以下的描述以eNB作为示例,但是同样可以应用于gNB。eNB 800包括一个或多个天线810以及基站设备820。基站设备820和每个天线810可以经由RF线缆彼此连接。
天线810中的每一个均包括单个或多个天线元件(诸如包括在多输入多输出(MIMO)天线中的多个天线元件),并且用于基站设备820发送和接收无线信号。如图15所示,eNB 800可以包括多个天线810。例如,多个天线810可以与eNB 800使用的多个频带兼容。虽然图15示出其中eNB 800包括多个天线810的示例,但是eNB 800也可以包括单个天线810。
基站设备820包括控制器821、存储器822、网络接口823以及无线通信接口825。
控制器821可以为例如CPU或DSP,并且操作基站设备820的较高层的各种功能。例如,控制器821根据由无线通信接口825处理的信号中的数据来生成数据分组,并经由网络接口823来传递所生成的分组。控制器821可以对来自多个基带处理器的数据进行捆绑以生成捆绑分组,并传递所生成的捆绑分组。控制器821可以具有执行如下控制的逻辑功能:该控制诸如为无线资源控制、无线承载控制、移动性管理、接纳控制和调度。该控制可以结合附近的eNB或核心网节点来执行。存储器822 包括RAM和ROM,并且存储由控制器821执行的程序和各种类型的控制数据(诸如终端列表、传输功率数据以及调度数据)。
网络接口823为用于将基站设备820连接至核心网824的通信接口。控制器821可以经由网络接口823而与核心网节点或另外的eNB进行通信。在此情况下,eNB 800与核心网节点或其他eNB可以通过逻辑接口(诸如S1接口和X2接口)而彼此连接。网络接口823还可以为有线通信接口或用于无线回程线路的无线通信接口。如果网络接口823为无线通信接口,则与由无线通信接口825使用的频带相比,网络接口823可以使用较高频带用于无线通信。
无线通信接口825支持任何蜂窝通信方案(诸如长期演进(LTE)和LTE-先进),并且经由天线810来提供到位于eNB 800的小区中的终端的无线连接。无线通信接口825通常可以包括例如基带(BB)处理器826和RF电路827。BB处理器826可以执行例如编码/解码、调制/解调以及复用/解复用,并且执行层(例如L1、介质访问控制(MAC)、无线链路控制(RLC)和分组数据汇聚协议(PDCP))的各种类型的信号处理。代替控制器821,BB处理器826可以具有上述逻辑功能的一部分或全部。BB处理器826可以为存储通信控制程序的存储器,或者为包括被配置为执行程序的处理器和相关电路的模块。更新程序可以使BB处理器826的功能改变。该模块可以为***到基站设备820的槽中的卡或刀片。可替代地,该模块也可以为安装在卡或刀片上的芯片。同时,RF电路827可以包括例如混频器、滤波器和放大器,并且经由天线810来传送和接收无线信号。
如图15所示,无线通信接口825可以包括多个BB处理器826。例如,多个BB处理器826可以与eNB 800使用的多个频带兼容。如图15所示,无线通信接口825可以包括多个RF电路827。例如,多个RF电路827可以与多个天线元件兼容。虽然图15示出其中无线通信接口825包括多个BB处理器826和多个RF电路827的示例,但是无线通信接口825也可以包括单个BB处理器826或单个RF电路827。
在图15所示的eNB 800中,电子设备200的收发器可以由无线通信接口825实现。功能的至少一部分也可以由控制器821实现。例如,控制器821可以通过执行获取单元201、判断单元202和限制单元203的功能来实现对次用户的发射功率的限制。
(第二应用示例)
图16是示出可以应用本公开内容的技术的eNB或gNB的示意性配置的第二示例的框图。注意,类似地,以下的描述以eNB作为示例,但是同样可以应用于gNB。eNB 830包括一个或多个天线840、基站设备850和RRH 860。RRH 860和每个天线840可以经由RF线缆而彼此连接。基站设备850和RRH 860可以经由诸如光纤线缆的高速线路而彼此连接。
天线840中的每一个均包括单个或多个天线元件(诸如包括在MIMO天线中的多个天线元件)并且用于RRH 860发送和接收无线信号。如图16所示,eNB 830可以包括多个天线840。例如,多个天线840可以与eNB 830使用的多个频带兼容。虽然图16示出其中eNB 830包括多个天线840的示例,但是eNB 830也可以包括单个天线840。
基站设备850包括控制器851、存储器852、网络接口853、无线通信接口855以及连接接口857。控制器851、存储器852和网络接口853与参照图15描述的控制器821、存储器822和网络接口823相同。
无线通信接口855支持任何蜂窝通信方案(诸如LTE和LTE-先进),并且经由RRH 860和天线840来提供到位于与RRH 860对应的扇区中的终端的无线通信。无线通信接口855通常可以包括例如BB处理器856。除了BB处理器856经由连接接口857连接到RRH 860的RF电路864之外,BB处理器856与参照图15描述的BB处理器826相同。如图16所示,无线通信接口855可以包括多个BB处理器856。例如,多个BB处理器856可以与eNB 830使用的多个频带兼容。虽然图16示出其中无线通信接口855包括多个BB处理器856的示例,但是无线通信接口855也可以包括单个BB处理器856。
连接接口857为用于将基站设备850(无线通信接口855)连接至RRH 860的接口。连接接口857还可以为用于将基站设备850(无线通信接口855)连接至RRH 860的上述高速线路中的通信的通信模块。
RRH 860包括连接接口861和无线通信接口863。
连接接口861为用于将RRH 860(无线通信接口863)连接至基站设备850的接口。连接接口861还可以为用于上述高速线路中的通信的通信模块。
无线通信接口863经由天线840来传送和接收无线信号。无线通信接口863通常可以包括例如RF电路864。RF电路864可以包括例如混频器、滤波器和放大器,并且经由天线840来传送和接收无线信号。如图16所示,无线通信接口863可以包括多个RF电路864。例如,多个RF电路864可以支持多个天线元件。虽然图16示出其中无线通信接口863包括多个RF电路864的示例,但是无线通信接口863也可以包括单个RF电路864。
在图16所示的eNB 830中,电子设备200的收发器可以由无线通信接口825实现。功能的至少一部分也可以由控制器821实现。例如,控制器821可以通过执行获取单元201、判断单元202和限制单元203的功能来实现对次用户的发射功率的限制。
[关于用户设备的应用示例]
(第一应用示例)
图17是示出可以应用本公开内容的技术的智能电话900的示意性配置的示例的框图。智能电话900包括处理器901、存储器902、存储装置903、外部连接接口904、摄像装置906、传感器907、麦克风908、输入装置909、显示装置910、扬声器911、无线通信接口912、一个或多个天线开关915、一个或多个天线916、总线917、电池918以及辅助控制器919。
处理器901可以为例如CPU或片上***(SoC),并且控制智能电话900的应用层和另外层的功能。存储器902包括RAM和ROM,并且存储数据和由处理器901执行的程序。存储装置903可以包括存储介质,诸如半导体存储器和硬盘。外部连接接口904为用于将外部装置(诸如存储卡和通用串行总线(USB)装置)连接至智能电话900的接口。
摄像装置906包括图像传感器(诸如电荷耦合器件(CCD)和互补金属氧化物半导体(CMOS)),并且生成捕获图像。传感器907可以包括一组传感器,诸如测量传感器、陀螺仪传感器、地磁传感器和加速度传感器。麦克风908将输入到智能电话900的声音转换为音频信号。输入装置909包括例如被配置为检测显示装置910的屏幕上的触摸的触摸传感器、小键盘、键盘、按钮或开关,并且接收从用户输入的操作或信 息。显示装置910包括屏幕(诸如液晶显示器(LCD)和有机发光二极管(OLED)显示器),并且显示智能电话900的输出图像。扬声器911将从智能电话900输出的音频信号转换为声音。
无线通信接口912支持任何蜂窝通信方案(诸如LTE和LTE-先进),并且执行无线通信。无线通信接口912通常可以包括例如BB处理器913和RF电路914。BB处理器913可以执行例如编码/解码、调制/解调以及复用/解复用,并且执行用于无线通信的各种类型的信号处理。同时,RF电路914可以包括例如混频器、滤波器和放大器,并且经由天线916来传送和接收无线信号。注意,图中虽然示出了一个RF链路与一个天线连接的情形,但是这仅是示意性的,还包括一个RF链路通过多个移相器与多个天线连接的情形。无线通信接口912可以为其上集成有BB处理器913和RF电路914的一个芯片模块。如图17所示,无线通信接口912可以包括多个BB处理器913和多个RF电路914。虽然图17示出其中无线通信接口912包括多个BB处理器913和多个RF电路914的示例,但是无线通信接口912也可以包括单个BB处理器913或单个RF电路914。
此外,除了蜂窝通信方案之外,无线通信接口912可以支持另外类型的无线通信方案,诸如短距离无线通信方案、近场通信方案和无线局域网(LAN)方案。在此情况下,无线通信接口912可以包括针对每种无线通信方案的BB处理器913和RF电路914。
天线开关915中的每一个在包括在无线通信接口912中的多个电路(例如用于不同的无线通信方案的电路)之间切换天线916的连接目的地。
天线916中的每一个均包括单个或多个天线元件(诸如包括在MIMO天线中的多个天线元件),并且用于无线通信接口912传送和接收无线信号。如图17所示,智能电话900可以包括多个天线916。虽然图17示出其中智能电话900包括多个天线916的示例,但是智能电话900也可以包括单个天线916。
此外,智能电话900可以包括针对每种无线通信方案的天线916。在此情况下,天线开关915可以从智能电话900的配置中省略。
总线917将处理器901、存储器902、存储装置903、外部连接接口 904、摄像装置906、传感器907、麦克风908、输入装置909、显示装置910、扬声器911、无线通信接口912以及辅助控制器919彼此连接。电池918经由馈线向图17所示的智能电话900的各个块提供电力,馈线在图中被部分地示为虚线。辅助控制器919例如在睡眠模式下操作智能电话900的最小必需功能。
在图17所示的智能电话900中,电子设备200的收发器可以由无线通信接口912实现。功能的至少一部分也可以由处理器901或辅助控制器919实现。例如,处理器901或辅助控制器919可以通过执行获取单元201、判断单元202和限制单元203的功能来实现对次用户的发射功率的限制。
(第二应用示例)
图18是示出可以应用本公开内容的技术的汽车导航设备920的示意性配置的示例的框图。汽车导航设备920包括处理器921、存储器922、全球定位***(GPS)模块924、传感器925、数据接口926、内容播放器927、存储介质接口928、输入装置929、显示装置930、扬声器931、无线通信接口933、一个或多个天线开关936、一个或多个天线937以及电池938。
处理器921可以为例如CPU或SoC,并且控制汽车导航设备920的导航功能和另外的功能。存储器922包括RAM和ROM,并且存储数据和由处理器921执行的程序。
GPS模块924使用从GPS卫星接收的GPS信号来测量汽车导航设备920的位置(诸如纬度、经度和高度)。传感器925可以包括一组传感器,诸如陀螺仪传感器、地磁传感器和空气压力传感器。数据接口926经由未示出的终端而连接到例如车载网络941,并且获取由车辆生成的数据(诸如车速数据)。
内容播放器927再现存储在存储介质(诸如CD和DVD)中的内容,该存储介质被***到存储介质接口928中。输入装置929包括例如被配置为检测显示装置930的屏幕上的触摸的触摸传感器、按钮或开关,并且接收从用户输入的操作或信息。显示装置930包括诸如LCD或OLED显示器的屏幕,并且显示导航功能的图像或再现的内容。扬声器931输出导航功能的声音或再现的内容。
无线通信接口933支持任何蜂窝通信方案(诸如LTE和LTE-先进),并且执行无线通信。无线通信接口933通常可以包括例如BB处理器934和RF电路935。BB处理器934可以执行例如编码/解码、调制/解调以及复用/解复用,并且执行用于无线通信的各种类型的信号处理。同时,RF电路935可以包括例如混频器、滤波器和放大器,并且经由天线937来传送和接收无线信号。无线通信接口933还可以为其上集成有BB处理器934和RF电路935的一个芯片模块。如图18所示,无线通信接口933可以包括多个BB处理器934和多个RF电路935。虽然图18示出其中无线通信接口933包括多个BB处理器934和多个RF电路935的示例,但是无线通信接口933也可以包括单个BB处理器934或单个RF电路935。
此外,除了蜂窝通信方案之外,无线通信接口933可以支持另外类型的无线通信方案,诸如短距离无线通信方案、近场通信方案和无线LAN方案。在此情况下,针对每种无线通信方案,无线通信接口933可以包括BB处理器934和RF电路935。
天线开关936中的每一个在包括在无线通信接口933中的多个电路(诸如用于不同的无线通信方案的电路)之间切换天线937的连接目的地。
天线937中的每一个均包括单个或多个天线元件(诸如包括在MIMO天线中的多个天线元件),并且用于无线通信接口933传送和接收无线信号。如图18所示,汽车导航设备920可以包括多个天线937。虽然图18示出其中汽车导航设备920包括多个天线937的示例,但是汽车导航设备920也可以包括单个天线937。
此外,汽车导航设备920可以包括针对每种无线通信方案的天线937。在此情况下,天线开关936可以从汽车导航设备920的配置中省略。
电池938经由馈线向图18所示的汽车导航设备920的各个块提供电力,馈线在图中被部分地示为虚线。电池938累积从车辆提供的电力。
在图18示出的汽车导航设备920中,电子设备200的收发器可以由无线通信接口912实现。功能的至少一部分也可以由处理器901或辅助控制器919实现。例如,处理器901或辅助控制器919可以通过执行获取单元201、判断单元202和限制单元203的功能来实现对次用户的发射 功率的限制。
本公开内容的技术也可以被实现为包括汽车导航设备920、车载网络941以及车辆模块942中的一个或多个块的车载***(或车辆)940。车辆模块942生成车辆数据(诸如车速、发动机速度和故障信息),并且将所生成的数据输出至车载网络941。
以上结合具体实施例描述了本公开的基本原理,但是,需要指出的是,对本领域的技术人员而言,能够理解本公开的方法和装置的全部或者任何步骤或部件,可以在任何计算装置(包括处理器、存储介质等)或者计算装置的网络中,以硬件、固件、软件或者其组合的形式实现,这是本领域的技术人员在阅读了本公开的描述的情况下利用其基本电路设计知识或者基本编程技能就能实现的。
而且,本公开还提出了一种存储有机器可读取的指令代码的程序产品。所述指令代码由机器读取并执行时,可执行上述根据本公开实施例的方法。
相应地,用于承载上述存储有机器可读取的指令代码的程序产品的存储介质也包括在本公开的公开中。所述存储介质包括但不限于软盘、光盘、磁光盘、存储卡、存储棒等等。
在通过软件或固件实现本公开的情况下,从存储介质或网络向具有专用硬件结构的计算机(例如图19所示的通用计算机1900)安装构成该软件的程序,该计算机在安装有各种程序时,能够执行各种功能等。
在图19中,中央处理单元(CPU)1901根据只读存储器(ROM)1902中存储的程序或从存储部分1908加载到随机存取存储器(RAM)1903的程序执行各种处理。在RAM 1903中,也根据需要存储当CPU 1901执行各种处理等等时所需的数据。CPU 1901、ROM 1902和RAM 1903经由总线1904彼此连接。输入/输出接口1905也连接到总线1904。
下述部件连接到输入/输出接口1905:输入部分1906(包括键盘、鼠标等等)、输出部分1907(包括显示器,比如阴极射线管(CRT)、液晶显示器(LCD)等,和扬声器等)、存储部分1908(包括硬盘等)、通信部分1909(包括网络接口卡比如LAN卡、调制解调器等)。通信部分 1909经由网络比如因特网执行通信处理。根据需要,驱动器1910也可连接到输入/输出接口1905。可移除介质1911比如磁盘、光盘、磁光盘、半导体存储器等等根据需要被安装在驱动器1910上,使得从中读出的计算机程序根据需要被安装到存储部分1908中。
在通过软件实现上述系列处理的情况下,从网络比如因特网或存储介质比如可移除介质1911安装构成软件的程序。
本领域的技术人员应当理解,这种存储介质不局限于图19所示的其中存储有程序、与设备相分离地分发以向用户提供程序的可移除介质1911。可移除介质1911的例子包含磁盘(包含软盘(注册商标))、光盘(包含光盘只读存储器(CD-ROM)和数字通用盘(DVD))、磁光盘(包含迷你盘(MD)(注册商标))和半导体存储器。或者,存储介质可以是ROM 1902、存储部分1908中包含的硬盘等等,其中存有程序,并且与包含它们的设备一起被分发给用户。
还需要指出的是,在本公开的装置、方法和***中,各部件或各步骤是可以分解和/或重新组合的。这些分解和/或重新组合应该视为本公开的等效方案。并且,执行上述系列处理的步骤可以自然地按照说明的顺序按时间顺序执行,但是并不需要一定按时间顺序执行。某些步骤可以并行或彼此独立地执行。
最后,还需要说明的是,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。此外,在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上虽然结合附图详细描述了本公开的实施例,但是应当明白,上面所描述的实施方式只是用于说明本公开,而并不构成对本公开的限制。对于本领域的技术人员来说,可以对上述实施方式作出各种修改和变更而没有背离本公开的实质和范围。因此,本公开的范围仅由所附的权利要求及其等效含义来限定。
Claims (29)
- 一种用于无线通信的电子设备,包括:处理电路,被配置为:确定主***的第一主用户的第一功率限制区,所述第一功率限制区为由所述第一主用户到所述主***的第三主用户的定向波束所限定的三维空间;以及确定所述第一功率限制区内的一个或多个次用户。
- 根据权利要求1所述的电子设备,其中,所述处理电路还被配置为基于所述主***的通信质量要求,来限制所述第一功率限制区中的一个或多个次用户的发射功率。
- 根据权利要求1所述的电子设备,其中,所述处理电路被配置为基于所述第一主用户和第三主用户的位置信息和天线配置信息来确定所述第一功率限制区。
- 根据权利要求1所述的电子设备,其中,所述处理电路被配置为至少基于次用户的位置信息来判断该次用户是否在所述第一功率限制区内。
- 根据权利要求1所述的电子设备,其中,所述处理电路被配置为计算所述第一主用户与所述第三主用户的连线和所述第一主用户与所述次用户的连线之间的夹角,并且在该夹角小于所述定向波束的波瓣宽度的一半的情况下,判断该次用户在所述第一功率限制区内。
- 根据权利要求2所述的电子设备,其中,所述处理电路被配置为基于所述主***的通信质量要求,来计算所述第一主用户能够承受的第一最大干扰功率值,并基于该第一最大干扰功率值来计算所述第一功率限制区中各个次用户的第一最大容许发射功率。
- 根据权利要求6所述的电子设备,其中,所述处理电路在保证多个次用户对所述第一主用户的累积最大干扰不超过所述第一最大干扰功率值的情况下,分配各个次用户能够对所述第一主用户产生的最大干扰功率,并基于该最大干扰功率计算各个次用户的第一最大容许发射功率。
- 根据权利要求7所述的电子设备,其中,所述处理电路被配置为在所述多个次用户间平均分配所述第一最大干扰功率值。
- 根据权利要求7所述的电子设备,其中,所述处理电路被配置为根据所述次用户的类型或功率调整能力来分配所述第一最大干扰功率值。
- 根据权利要求9所述的电子设备,其中,所述处理电路被配置成分别为不同的次用户设备设置分配权重。
- 根据权利要求1所述的电子设备,其中,所述次用户包括次***基站和/或次***用户设备。
- 根据权利要求6所述的电子设备,其中,所述处理电路还被配置为:确定主***的第二主用户的第二功率限制区,所述第二功率限制区为由所述第二主用户到所述主***的第四主用户的定向波束所限定的三维空间;确定所述第二功率限制区内的一个或多个次用户;以及基于所述主***的通信质量要求,来计算所述第二主用户能够承受的第二最大干扰功率值,并基于该第二最大干扰功率值来计算所述第二功率限制区中各个次用户的第二最大容许发射功率,其中,当特定次用户存在于所述第一功率限制区和所述第二功率限制区的交叠部分中时,针对该特定次用户,所述处理电路被配置为将所述第一最大容许发射功率和所述第二最大容许发射功率中较小的一个作为该特定次用户的最大容许发射功率。
- 根据权利要求2所述的电子设备,其中,所述通信质量要求包括期望的信干噪比。
- 根据权利要求1所述的电子设备,其中,主用户和/或次用户采用阵列天线。
- 根据权利要求6所述的电子设备,其中,所述处理电路还被配置为基于所述各个次用户的第一最大容许发射功率,为各个次用户分配频谱资源以及设置各个次用户的发射功率。
- 根据权利要求15所述的电子设备,其中,所述处理电路还被配置为在所述第一功率限制区中的次用户的状况发生预定程度的变化的情况下,动态地调整次用户的频谱分配和发射功率。
- 根据权利要求16所述的电子设备,其中,所述处理电路被配置为设置迟滞参数门限,并且在所述第一功率限制区中的次用户的状况发生预定程度的变化的时间超过所述迟滞参数门限时,动态地调整次用户的频谱分配和发射功率。
- 根据权利要求16所述的电子设备,其中,所述处理电路被配置为优先调整移动性低的次用户的频谱分配和发射功率。
- 根据权利要求6所述的电子设备,其中,所述处理电路被配置为在计算所述第一主用户能够承受的第一最大干扰功率值时,在所述通信质量要求的基础上加上预定裕量。
- 根据权利要求15所述的电子设备,其中,所述处理电路还被配置为基于所述第一功率限制区内的次用户的在保证该次用户的服务质量要求的情况下的最低发射功率来确定所述第一功率限制区中容许的次用户的最大数目。
- 根据权利要求20所述的电子设备,其中,所述处理电路被配置为在所述第一功率限制区中的次用户的数目超过所述最大数目时,优先为对所述第一主用户的干扰较小的次用户分配频谱资源。
- 根据权利要求2所述的电子设备,其中,所述处理电路被配置为至少基于所述主***中主用户的密度、次用户的密度以及所述通信质量要求,预先计算所述第一功率限制区中各个位置处次用户的第一最大容许发射功率,并将所述第一功率限制区的范围和所述第一最大容许发射功率的信息广播给次用户,以使得所述次用户根据自身的位置来设置发射功率。
- 根据权利要求1所述的电子设备,其中,所述处理电路被配置为从频谱管理数据库获取如下中的一项或多项:主用户的位置信息、主用户的天线配置信息、次用户的位置信息、次用户的天线配置信息、次用户的运动轨迹信息、业务类型。
- 一种用于无线通信的电子设备,包括:处理电路,被配置为:从频谱管理装置获取主用户的功率限制区的位置和次用户的最大容许发射功率的信息;基于次用户的位置判断所述次用户是否在所述功率限制区内;以及在所述次用户位于所述功率限制区内的情况下,将所述次用户的发射功率限制在所述最大容许发射功率以下。
- 根据权利要求24所述的电子设备,其中,所述处理电路通过广播消息来获取所述信息。
- 根据权利要求24所述的电子设备,其中,所述处理电路还被配置为将所述次用户的位置信息、天线配置信息、运动轨迹信息、业务类型中的一项或多项提供给所述频谱管理装置。
- 一种用于无线通信的方法,包括:确定主***的第一主用户的第一功率限制区,所述第一功率限制区为由所述第一主用户到所述主***的第三主用户的定向波束所限定的三维空间;以及确定所述第一功率限制区内的一个或多个次用户。
- 一种用于无线通信的方法,包括:从频谱管理装置获取主用户的功率限制区的位置和次用户的最大容许发射功率的信息;基于次用户的位置判断所述次用户是否在所述功率限制区内;以及在所述次用户位于所述功率限制区内的情况下,将所述次用户的发射功率限制在所述最大容许发射功率以下。
- 一种计算机可读存储介质,其上存储有计算机可执行指令,当所述计算机可执行指令被执行时,执行根据权利要求27或权利要求28所述的用于无线通信的方法。
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TW202031070A (zh) | 2020-08-16 |
EP3920605A1 (en) | 2021-12-08 |
US11849406B2 (en) | 2023-12-19 |
US20220078723A1 (en) | 2022-03-10 |
JP2022523133A (ja) | 2022-04-21 |
CN111526570A (zh) | 2020-08-11 |
CN113287343B (zh) | 2024-04-30 |
JP7456447B2 (ja) | 2024-03-27 |
CN113287343A (zh) | 2021-08-20 |
EP3920605A4 (en) | 2022-03-30 |
US20240089871A1 (en) | 2024-03-14 |
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