WO2016115990A1 - 资源管理装置、资源管理方法及通信系统中的装置和方法 - Google Patents

资源管理装置、资源管理方法及通信系统中的装置和方法 Download PDF

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Publication number
WO2016115990A1
WO2016115990A1 PCT/CN2016/070690 CN2016070690W WO2016115990A1 WO 2016115990 A1 WO2016115990 A1 WO 2016115990A1 CN 2016070690 W CN2016070690 W CN 2016070690W WO 2016115990 A1 WO2016115990 A1 WO 2016115990A1
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Prior art keywords
secondary system
resource
information
target
target secondary
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PCT/CN2016/070690
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English (en)
French (fr)
Inventor
赵友平
孙晨
李金兴
郭欣
刘康怡
Original Assignee
索尼公司
赵友平
孙晨
李金兴
郭欣
刘康怡
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Application filed by 索尼公司, 赵友平, 孙晨, 李金兴, 郭欣, 刘康怡 filed Critical 索尼公司
Priority to BR112017013910-3A priority Critical patent/BR112017013910A2/zh
Priority to US15/533,501 priority patent/US10136332B2/en
Priority to EP16739737.1A priority patent/EP3249962A4/en
Publication of WO2016115990A1 publication Critical patent/WO2016115990A1/zh
Priority to US16/161,340 priority patent/US10511978B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10—Dynamic resource partitioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/29—Control channels or signalling for resource management between an access point and the access point controlling device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties

Definitions

  • the present disclosure relates generally to the field of wireless communication technologies, and more particularly to a resource management apparatus, a resource management method, and a secondary system for flexibly and efficiently managing opportunistic utilization of a primary system's spectrum resources in a communication system.
  • Cognitive radio technology is an intelligent evolution of software radio technology.
  • a key technology to improve the actual utilization of spectrum due to the transmission of different modulated signals in the same frequency band, the signals transmitted by unauthorized cognitive radios (unauthorized users or secondary users) are in the same frequency band.
  • the authorized user (primary user) or the secondary user who has low priority usage rights to the spectrum resource may interfere with the secondary users who have high priority use rights to the spectrum resources in the same frequency band. Therefore, it is necessary to establish a cognitive engine.
  • a spectrum management device such as a cognitive engine and a spectrum coordinator uses advanced algorithms to manage the emission spectrum of each user to ensure that the communication between the primary user or the high priority secondary user is not subject to harmful interference.
  • the spectrum resource allocation for the target secondary user includes only the coarse spectrum resource allocation in which the target secondary user should work, and the transmission waveform (such as the target user should be adopted for the target secondary user).
  • the finer spectrum resource allocation of the address mode, modulation mode, specific time domain resources (especially in the case of multi-carrier, related information on each subcarrier), etc.) is not mentioned in the prior art.
  • an object of the present disclosure is to provide a resource management apparatus and resource management method for managing opportunistic utilization of a spectrum resource of a primary system by a secondary system in a communication system, and a target secondary system device side in a secondary system
  • Apparatus and method capable of dynamically, according to a comprehensive spectrum sensing result of an environment in which a target subsystem device of a cognitive radio device is located, a device state of a target subsystem device, a requirement of interference suppression by a primary system and a secondary system, and the like Realize fine spectrum resource allocation to target subsystems to more efficiently utilize radio spectrum resources and avoid harmful radio interference to other users (such as primary users or high-priority subsystems), achieving target subsystems Efficient spectrum sharing between the device and the primary user or high priority secondary system device.
  • the technical effects of at least one of the following are achieved: the complexity and cost of the cognitive radio device are reduced, the spectrum management overhead in the communication system is reduced, and the strainability of the cognitive radio device in different electromagnetic environments is improved. Applicability and also improved spectrum utilization.
  • a resource management apparatus for managing an opportunistic utilization of a spectrum resource of a primary system by a secondary system in a communication system
  • the resource management apparatus comprising: a receiving unit And configured to receive device information and resource requests of the target secondary system device among the one or more secondary system devices in the secondary system; the available resource obtaining unit configured to respond to the resource request based on the device information of the target secondary system device Obtaining resource information available to the target secondary system device, wherein the resource information includes indication information related to a transmission waveform for the target secondary system device; and a notification unit configured to notify the target secondary system of the acquired resource information device.
  • the device information may include parameters related to a transmission waveform supported by the target subsystem device.
  • the device information may include parameters related to nonlinear characteristics of the target subsystem device, and the available resource acquisition unit may also acquire and calculate based on parameters related to nonlinear characteristics of the target subsystem device. Indicates information about the transmit waveform of the target subsystem device.
  • the indication information related to the transmission waveform for the target subsystem device may include the type of the transmission waveform.
  • the indication information related to the transmission waveform for the target secondary system device further includes a subcarrier spectrum segment. At least one of a number, a subcarrier number, and a transmission power of a subcarrier.
  • the transmission waveform type belonging to the multicarrier includes at least one of orthogonal frequency division multiplexing (OFDM) and filter bank based multicarrier (FBMC).
  • OFDM orthogonal frequency division multiplexing
  • FBMC filter bank based multicarrier
  • the indication information related to the transmission waveform for the target subsystem device includes parameters related to the filter to be employed.
  • the receiving unit further receives sensing information from the target secondary system device to the wireless environment of the communication system, and the available resource obtaining unit may further acquire the resource information based on the sensing information.
  • the sensing information includes information related to interference on a frequency corresponding to each sub-carrier.
  • the perception information may include information related to the occupancy of the perceived target spectrum resource.
  • the perceptual information may include information related to a type of communication device occupying the perceptual target spectrum resource.
  • a device in a communication system the device being located on a target secondary system device side of one or more secondary system devices of a secondary system in a communication system, the device comprising: a transmitting unit Configuring to transmit device information and resource requests of the target secondary system device to the resource management device, wherein the resource management device is configured to manage opportunistic utilization of the spectrum resources of the primary system by the secondary system in the communication system; And configured to receive resource information available to the target secondary system device acquired by the resource management device in response to the resource request based on the device information of the target secondary system device, wherein the resource information includes a transmit waveform related to the target secondary system device Instructing information; and a control unit configured to control the target secondary system device to operate based on the received resource information.
  • a resource management method in a communication system for managing opportunistic utilization of a spectrum resource of a primary system by a secondary system in a communication system
  • the resource management method including a receiving step, configured to receive device information and a resource request of a target secondary system device among one or more secondary system devices in the secondary system; an available resource obtaining step, configured to respond to the resource request, based on the target secondary system device Obtaining resource information available to the target secondary system device, wherein the resource information includes indication information related to a transmission waveform for the target secondary system device; and a notifying step of notifying the acquired resource information to the target Secondary system equipment.
  • a method in a communication system comprising: transmitting a step of transmitting device information and resource request of the target secondary system device to the resource management device, wherein the resource management device is configured to manage opportunistic utilization of the spectrum resource of the primary system by the secondary system in the communication system; Means for receiving resource information available to the target secondary system device acquired by the resource management device in response to the resource request based on the device information of the target secondary system device, wherein the resource information includes an indication related to a transmit waveform for the target secondary system device Information; and a control step of controlling the target subsystem device operation based on the received resource information.
  • an electronic device comprising one or more processors, the one or more processors being configurable to perform the resource management device according to an embodiment of the present disclosure described above And the function of each unit in the device on the target system side of the target system or the processing in the respective steps in the resource management method according to the embodiment of the present disclosure and the method performed on the target secondary system device side.
  • a storage medium including machine readable program code that, when executed on an information processing device, causes the information processing device to perform the above-described according to the present disclosure
  • a resource management method of an embodiment and/or a method performed on a target secondary system device side is also provided.
  • a program product comprising machine-executable instructions that, when executed on an information processing device, cause the information processing device to perform the above-described embodiments according to the present disclosure Resource management method and/or method performed on the target secondary system device side.
  • finer spectral resource allocation to a target secondary system device as a cognitive radio device can be realized to achieve harmful interference without causing primary user or high priority secondary system device in the primary system More efficient sharing of spectrum resources.
  • FIG. 1 is a schematic diagram showing one example of a communication system including a primary system and a secondary system;
  • FIG. 2 is a block diagram showing a functional configuration example of a resource management device in a communication system according to an embodiment of the present disclosure
  • 3A shows a schematic diagram of a first example of an information interaction process between a resource management device and a target secondary system device, in accordance with an embodiment of the present disclosure
  • 3B illustrates a schematic diagram of a second example of an information interaction process between a resource management device and a target secondary system device, in accordance with an embodiment of the present disclosure
  • 3C illustrates a schematic diagram of a third example of an information interaction process between a resource management device and a target secondary system device, in accordance with an embodiment of the present disclosure
  • FIG. 4 is a block diagram showing a functional configuration example of a device on a target secondary system device side in a secondary system according to an embodiment of the present disclosure
  • FIG. 5 is a block diagram showing another functional configuration example of a device on a target secondary system device side in a secondary system according to an embodiment of the present disclosure
  • FIG. 6 is a flowchart illustrating a process example of a resource management method in a communication system according to an embodiment of the present disclosure
  • FIG. 7 is a flowchart showing an example of a procedure of a method performed by a target secondary system device side in a secondary system according to an embodiment of the present disclosure
  • FIG. 8 is a block diagram showing an example structure of a personal computer as an information processing device that can be employed in an embodiment of the present disclosure
  • 9A and 9B are explanatory diagrams illustrating a first application example according to an embodiment of the present disclosure.
  • 10A and 10B are explanatory diagrams illustrating a second application example according to an embodiment of the present disclosure.
  • FIG. 11 is a flowchart showing an example of a procedure of an FBMC-based spectrum management algorithm according to a second application example of the present disclosure
  • FIG. 12 is a flowchart illustrating an example of a process of selecting a subcarrier suitable for a target secondary user according to a second application example of the present disclosure.
  • the primary system is a system that has legitimate use rights for spectrum resources.
  • the primary system may have a primary base station/primary access point and one or more users (primary users).
  • Primary users also known in some literature as cognitive radios, can only be used opportunistically without causing harmful interference to the primary system using its spectrum communications.
  • Secondary systems can be included in the secondary system, including secondary base stations. / secondary access point and one or more users (secondary users).
  • the secondary system may be a communication system without spectrum usage rights, for example, an LTE communication system that utilizes wifi/radar band resources for communication, and a wifi communication system that utilizes broadcast television band resources, for example.
  • the secondary system may also be a system with spectrum usage rights, but with a lower priority level in spectrum usage than the primary system. For example, when an operator deploys a new base station to provide new services, the existing base station and the services provided are used as the primary system with spectrum usage priority, and the new base station and the services provided are used as secondary systems with lower priority. Level of spectrum usage rights.
  • FIG. 1 is a schematic diagram showing one example of a communication system including a primary system and a secondary system, according to an embodiment of the present disclosure.
  • the broadcast television system is the main system 101, including the main base station 1011 and a plurality of main users (television sets) 1012.
  • Mobile communication systems 102, 103, and 104 are secondary systems that include secondary base stations 1021, 1031, 1041 and secondary users 1022, 1032, 1042, respectively.
  • digital broadcast television can be dynamically utilized
  • the spectrum for example, the spectrum of some channels that do not play a program or the spectrum of adjacent channels, performs wireless mobile communication without interfering with the reception of television signals.
  • the UHF band is divided into broadcast television services, so the broadcast television system has the highest priority in the frequency band and is the primary system.
  • spectrum resources that are not used by a broadcast television system in UHF during a certain period of time can be allocated to other communication systems, and thus these other communication systems are secondary systems.
  • the communication mode in which the primary and secondary systems coexist requires that the application of the secondary system does not adversely affect the application of the primary system or even the high priority secondary system. In other words, the impact of the secondary system's spectrum utilization can be controlled by the primary system.
  • the high priority subsystem within the scope, further, within the range allowed by the high priority subsystem. Multiple sub-systems may be available to the primary system and/or the high priority sub-system if the interference to the primary system and/or the high-priority secondary system is within a certain range, ie, does not exceed its interference threshold. Spectrum resources are used.
  • main system is a broadcast television system in FIG. 1, the present disclosure is not limited thereto, and the main system may also be a mobile communication system having spectrum usage rights, and the secondary system also It can be used for other systems that need to use spectrum resources for communication, such as smart meter reading systems.
  • the number of secondary systems is not limited to three, but may be more or less.
  • the low priority secondary system can use the resources that are not occupied by the high priority secondary system for opportunistic use.
  • a high priority secondary system can also be considered a primary system.
  • a database such as a geographic location database (GLDB) or a cognitive engine database.
  • This database also stores, for example, the interference limits allowed by the primary system and the use of spectrum resources by the primary system.
  • the secondary system in the same area first accesses the database and submits the status information of the secondary system before starting to utilize the spectrum of the primary system in the same area, such as location information, spectrum emission mask, transmission bandwidth and carrier frequency. Wait. Then, the database calculates the interference amount of the secondary system to the primary system according to the state information of the secondary system, and calculates the estimated available spectrum resources of the secondary system in the current state according to the calculated interference amount of the secondary system to the primary system in the current state.
  • the normal operation of the primary system is usually protected by a geographical location database, and the secondary system can directly access the geographical location database to obtain available spectrum resources.
  • a spectrum coordinator is also provided on the secondary system side, mainly for managing/coordinating coexistence between sub-systems (for example, when multiple sub-systems close to each other want to use main system spectrum resources, The spectrum coordinator needs to be coordinated) to improve the communication quality and spectrum utilization efficiency of the secondary system.
  • the spectrum coordinator collects information of the secondary system it manages and requests the database to calculate available resources. After acquiring the available resources, the corresponding resources are adjusted and allocated to each secondary system based on, for example, priority and QoS requirements of each secondary system.
  • the spectrum coordinator and the geolocation database can be set separately or collectively.
  • the geolocation database is mainly used to calculate the available spectrum resources that do not interfere with the primary system according to the state information such as the geographic location of the secondary system, and the spectrum coordinator is mainly used to manage/coordinate the coexistence between the secondary systems (for example, when multiple locations)
  • the spectrum coordinator needs to be coordinated when the near secondary system wants to use the primary system spectrum resources.
  • the spectrum coordinator and the geolocation database are collectively referred to as resource management devices without distinction, and functions to be implemented in the embodiments of the present disclosure may be implemented by the spectrum coordinator while remaining The existing configuration of the geolocation database is unchanged, or it can be implemented by the geolocation database while leaving the existing configuration of the spectrum coordinator unchanged.
  • FIG. 2 is a block diagram showing a functional configuration example of a resource management device in a communication system according to an embodiment of the present disclosure.
  • the resource management apparatus 200 may include a receiving unit 202, an available resource acquiring unit 204, and a notifying unit 206.
  • the resource management apparatus 200 is configured to manage opportunistic utilization of the spectrum resources of the primary system by the secondary system in the communication system, that is, the secondary system may occasionally utilize the primary system without causing harmful interference to the application of the primary system. Unused spectrum resources are used for their own applications.
  • the receiving unit 202 can be configured to receive device information and resource requests of the target secondary system device among one or more secondary system devices in the secondary system.
  • the secondary system device may comprise a secondary system base station or a secondary system access point, a secondary system user terminal or other spectrum shared cognitive radio device.
  • the device information herein may include status information of the target secondary system device such as the above-described location information, spectrum transmission template, transmission bandwidth, and carrier frequency.
  • the available resource obtaining unit 204 may be configured to, according to the resource request, acquire resource information available to the target secondary system device based on the device information of the target secondary system device, the resource information may include a transmission waveform related to the target secondary system device Instructions.
  • the geolocation database calculates a frequency band and a transmit waveform available to the target sub system device without causing harmful interference to the primary system based on the device information; the spectrum is coordinated by the resource management device 200.
  • the spectrum coordinator calculates the available emissions for the low priority secondary system device if, for example, the high priority secondary system interferes within a predetermined range. Waveforms and corresponding spectrum resources.
  • the indication information related to the transmission waveform for the target subsystem device may include a type of the transmission waveform (such as OFDM, FBMC, CDMA, GSM, etc.), and may further include an emission spectrum corresponding to each of the transmission waveform types and At least one of transmit power.
  • the indication information related to the transmission waveform for the target subsystem device further includes a sub-carrier spectrum segment number, a sub-carrier number (for example, a start and stop of each segment spectrum) At least one of a carrier number) and a transmission power of a subcarrier.
  • the type of multicarrier may include at least one of OFDM and FBMC.
  • FBMC technology can be prioritized for use in environments where adjacent channel interference suppression is severe, because FBMC technology has lower out-of-band spurious emissions and higher spectrum utilization than OFDM systems.
  • the indication information related to the transmission waveform for the target subsystem device further includes parameters related to the filter to be employed, such as the type of the shaped filter window function (Kaiser window, Hamming window, Blackman window, etc.) ), filter parameters (order, coefficient, etc.), sampling rate and other parameters.
  • parameters related to the filter to be employed such as the type of the shaped filter window function (Kaiser window, Hamming window, Blackman window, etc.) ), filter parameters (order, coefficient, etc.), sampling rate and other parameters.
  • Table 1 below shows an example of parameters included in the indication information related to the transmission waveform for the target subsystem device. It should be understood that these parameters are merely examples and are not limiting, the indication information may include one or more of these parameters, and may include other parameters than those.
  • the notification unit 206 can be configured to notify the target secondary system device of the acquired resource information.
  • FIG. 3A is a schematic diagram showing a first example of an information interaction process between a resource management device and a target secondary system device, according to an embodiment of the present disclosure.
  • the target secondary system device transmits device information and resource requests of the target secondary system device to the resource management device 200.
  • the available resource acquisition unit 204 of the resource management device 200 may first respond to the resource request in a conventional manner based on the geographic location of the target secondary system device, while ensuring that no harmful interference is generated to the primary system. Determine the available resource parameters such as the frequency band and maximum transmit power available to the target subsystem. It should be understood that in the geographic location database and spectrum Where the coordinators are set separately, the available resource parameters herein may be determined by the geolocation database based on the geographic location of the target secondary system device, and the spectrum coordinator may obtain this information from the geolocation database.
  • the device information from the target secondary system device in order to more finely determine the spectrum resources available for the target secondary system device (ie, the transmit waveform indication information for the target secondary system device), the device information from the target secondary system device in addition to the geographic location and the like described above.
  • Parameters related to the transmit waveforms supported by the target subsystem device such as the type of waveform supported by the target subsystem device (eg, OFDM, FBMC, CDMA, etc.), maximum transmit power, and the like, may also be included.
  • the available resource acquisition unit 204 may acquire indication information related to the transmission waveform for the target secondary system device according to the parameter related to the transmission waveform supported by the target secondary system device included in the device information.
  • the target secondary system device is performed more finely.
  • the intermodulation product due to the nonlinear problem for example, the third-order intermodulation product (IMP3) for the multi-carrier signal of the discontinuous spectrum
  • IMP3 third-order intermodulation product
  • the device information may further include parameters related to nonlinear characteristics of the target subsystem device, such as third-order intercept intercept point input power (IIP3), 1 dB compression point input power (P 1dB ), and the like, and are available.
  • the resource acquisition unit 204 may further obtain indication information related to a transmission waveform for the target secondary system device based on parameters related to nonlinear characteristics of the target secondary system device. For example, when, for example, the third-order intermodulation product exceeds the interference threshold of the primary system, the available resource acquisition unit 204 may change the subcarrier to be used for the target secondary system device or reduce the transmission power of the subcarrier, etc., to protect the primary system. Applications.
  • the device information from the target subsystem device includes parameters related to the transmit waveform supported by the target subsystem device and parameters related to the nonlinear characteristics of the target subsystem device
  • the device information may also include However, it is not limited to other operating parameters such as the operating frequency range of the target subsystem device, the processor capacity, the remaining power, and the like, and the available resource obtaining unit 204 of the resource management device 200 can determine the transmission suitable for the target secondary system device in combination with various factors. Waveforms for more flexible and efficient spectrum resource allocation.
  • the notification unit 206 of the resource management device 200 may determine the determined The target subsystem device is notified with the resource parameters along with the indication information associated with the transmit waveform for the target subsystem device.
  • the receiving unit 202 may also receive sensing information from the target secondary system device to the wireless environment of the communication system, which may include, for example, information such as interference around the target secondary system device.
  • the sensing information may include information related to interference on the frequency corresponding to each subcarrier. It should be understood that the sensing information is not necessarily directly perceived by the target secondary system device, but may also be sensed and reported to the target secondary system device by, for example, a slave device of the target secondary system device, thereby being targeted by the target secondary system. The device is sent to the resource management device.
  • FIG. 3B is a schematic diagram showing a second example of an information interaction process between a resource management device and a target secondary system device, according to an embodiment of the present disclosure.
  • the target secondary system device transmits device information, a resource request, and sensing information to the wireless environment to the resource management device 200.
  • the available resource obtaining unit 204 of the resource management apparatus 200 may determine, in a conventional manner, a frequency band available to the target subsystem device based on the geographic location and the interference in the sensing information included in the device information in response to the resource request.
  • Traditional available resource parameters such as maximum transmit power.
  • the available resource acquisition unit 204 may further determine the indication information related to the transmission waveform for the target subsystem device based on the parameters related to the transmission waveform supported by the target subsystem device included in the device information or the like.
  • the notification unit 206 of the resource management apparatus 200 may notify the target secondary system device together with the determined available resource parameters and the transmission waveform indication information.
  • the perceptual information may include information related to the occupancy of the perceptual target spectrum resource. That is, the target secondary system device perceives the available frequency bands determined by the resource management device to determine if it will be interfered when operating on the available frequency band.
  • FIG. 3C illustrates an example of information interaction between a resource management device and a target secondary system device in accordance with the preferred embodiment.
  • FIG. 3C is a diagram showing a relationship between a resource management device and a target secondary system device, according to an embodiment of the present disclosure.
  • the target secondary system device transmits device information and a resource request to the resource management device 200.
  • the available resource acquisition unit 204 of the resource management device 200 may determine, in a conventional manner, for example, based on geographic location and the like, information on the available available resource parameters, such as the frequency band, maximum transmit power, and the like of the target secondary system device, in response to the resource request.
  • the notification unit 206 of the resource management device 200 notifies the target secondary system device of the traditional available resource parameters.
  • the target secondary system device senses on the corresponding available frequency band based on the received traditional available resource parameters to determine whether the target secondary system device will be interfered when operating on the available frequency band.
  • the target secondary system device will report the sensing information of the perceived result of the expected available frequency band (ie, information related to the occupancy of the perceived target spectral resource) to the resource management device.
  • the available resource acquisition unit 204 further determines indication information for the transmission waveform of the target secondary system device based on the sensing information and parameters in the device information related to the transmission waveform supported by the target secondary system device.
  • the notifying unit 206 notifies the target secondary system device of the transmission waveform indication information.
  • the resource management device can first determine the estimated available spectrum resources of the target secondary system device based on the geographic location information according to the conventional technology, and then work with the target secondary system device pair on the projected available spectrum resources. Whether the information related to the transmission waveform of the target subsystem device can be further finely determined by the information such as the perceived result of the interference and the transmission waveform supported by the target subsystem, so that the communication performance of the target subsystem can be sufficiently ensured.
  • the above-described sensing information may further include information related to the type of the communication device occupying the sensing target spectrum resource. For example, if the type of the communication device occupying the target spectrum resource belongs to the primary user in the primary system or other high-priority secondary system devices, the application of the communication device is not subject to harmful interference, so it needs to be adjusted accordingly. Resources for the target secondary system device.
  • the communication device occupying the target spectrum resource is more than the target subsystem
  • the low-priority sub-system device with low priority of the device has priority to ensure the application of the high-priority target subsystem device, so the target subsystem device can work preferentially on the perceptual target spectrum resource.
  • the resource management apparatus may also determine, for example, the service requirements and quality of service (QoS) requirements of the target secondary system device when determining the resource information available to the target secondary system device.
  • QoS quality of service
  • step S12 and step S13 shown in FIG. 3A and step S22 and step S23 shown in FIG. 3B these two steps can be performed simultaneously.
  • the resource management apparatus comprehensively considers various factors including, but not limited to, device information of a target secondary system device (eg, a geographical location, a supported transmission waveform (including a type of a transmitted waveform, Maximum transmit power, operating frequency range, etc.), non-linear characteristics and capabilities (such as processor power, remaining power, etc.), spectrum sensing results for the wireless environment (eg, interference information, perceived occupancy of target spectrum resources, and occupancy of the perceived target spectrum)
  • the device type of the resource, etc., as well as the service requirements and QoS requirements, etc. determine the transmit waveform suitable for the target subsystem device (such as the type of transmit waveform, the number of subcarrier spectrum segments, the subcarrier sequence number, the transmit power, and the associated filter parameters employed). Etc.), thereby achieving a finer allocation of spectrum resources, which can improve the utilization efficiency of spectrum resources while meeting the communication performance requirements of each system.
  • FIG. 4 is a block diagram showing a functional configuration example of a device on a target secondary system device side in a secondary system according to an embodiment of the present disclosure.
  • the apparatus 400 may include a transmitting unit 402, a receiving unit 404, and a control unit 406.
  • the functional configuration examples of the respective units will be described in detail below.
  • the transmitting unit 402 can be configured to transmit device information and resource requests of the target secondary system device to the resource management device for managing opportunistic utilization of the primary system's spectrum resources by the secondary system in the communication system.
  • the device information preferably may include, for example, a target subsystem device
  • the receiving unit 404 may be configured to receive resource information available to the target secondary system device acquired by the resource management device based on the device information of the target secondary system device in response to the resource request, the resource information may include the transmission with the target secondary system device Instructions related to the waveform.
  • the indication information related to the transmission waveform for the target subsystem device may include the type of the transmission waveform, and in the case where the type of the transmission waveform belongs to a multi-carrier (including OFDM, FBMC, etc.), the indication information may also At least one of a subcarrier spectrum segment number, a subcarrier sequence number, and a transmission power of a subcarrier is included.
  • the indication information related to the transmission waveform for the target subsystem device may also include parameters related to the filter to be employed, such as window function type, order, sampling rate, and the like.
  • Control unit 406 can be configured to control the target secondary system device to operate in accordance with the received resource information from the resource management device.
  • a selector in device 400 that selects a baseband processing circuit, such as based on OFDM or FBMC, in response to a control signal from control unit 406, and based on the received
  • the frequency information, frequency converters, filters, samplers, etc. are configured such that the target secondary system device operates in accordance with the received resource information.
  • OFDM-based or FBMC-based baseband processing circuitry can be implemented in one chipset or multiple chipsets.
  • FIG. 5 is a block diagram showing another functional configuration example of a device on a target secondary system device side in a secondary system according to an embodiment of the present disclosure.
  • the apparatus 500 may include a sensing unit 502, a transmitting unit 504, a receiving unit 506, and a control unit 508.
  • the functional configurations of the sending unit 504, the receiving unit 506, and the control unit 508 are the same as those of the transmitting unit 402, the receiving unit 404, and the control unit 406, and the description is not repeated here. Only the functional configuration example of the sensing unit 502 will be described in detail herein.
  • the sensing unit 502 can be configured to perceive a wireless environment of the communication system to obtain corresponding perceptual information. It should be understood that the sensing unit 502 can be located on the target secondary system device to directly sense the wireless environment by the target secondary system device, or can also be a slave device of the target secondary system device to be sensed by the secondary device and Report to the target subsystem equipment.
  • the primary user is a television
  • the target secondary system device is a home base station
  • the secondary device can be powered
  • the intelligent terminal of the video segment (for example, a mobile phone, a tablet, etc.) can be divided and distributed to each intelligent terminal by the home base station to sense and report to a target base station.
  • the sensing information may include, for example, interference information around the target secondary system device, and in a case where the type of the transmission waveform supported by the target secondary system device belongs to multiple carriers, the sensing information may include interference related to the frequency on the corresponding frequency of each subcarrier. information. Moreover, preferably, the sensing information may further include information related to the occupancy of the target spectrum resource and information related to the type of the communication device occupying the target spectrum resource.
  • the sending unit 504 can also send the sensing information obtained by the sensing unit 502 to the resource management device, so that the resource management device can determine the resource information available to the target secondary system device by considering the device information, the sensing information, and the like from the target secondary system device.
  • a target secondary system device as a cognitive radio device only needs to acquire spectrum resources available for its own application from a resource management device through information interaction without performing complicated calculation, thereby simplifying the target secondary system Device configuration reduces cost and power consumption.
  • the present disclosure also provides a corresponding resource management method and a method performed on the target secondary system device side.
  • An example of a procedure of a resource management method of a communication system and a method performed by a target secondary system device side in a secondary system according to an embodiment of the present disclosure will be described below with reference to FIGS. 6 through 7.
  • FIG. 6 is a flowchart illustrating a process example of a resource management method in a communication system according to an embodiment of the present disclosure.
  • the resource management method is used to manage the opportunistic utilization of the spectrum resources of the primary system by the secondary system in the communication system.
  • the receiving step S602 device information and a resource request of the target secondary system device among one or more secondary system devices in the secondary system are received.
  • the device information here can be This includes, for example, the geographic location of the target secondary system device, and may also preferably include, for example, parameters related to the transmit waveforms supported by the target secondary system device, parameters related to the nonlinear characteristics of the target secondary system device, and the like.
  • the available resource obtaining step S604 in response to the resource request, acquiring resource information available to the target secondary system device based on the device information of the target secondary system device, the resource information including the transmission waveform used for the target secondary system device Instructions.
  • the indication information preferably may include a type of a transmission waveform, and in a case where the type of the transmission waveform belongs to a multicarrier (such as OFDM, FBMC, etc.), the indication information may further include a subcarrier spectrum segment number, a subcarrier sequence number, and a subcarrier emission. At least one of the powers.
  • the indication information may also include parameters related to the filter to be employed.
  • the acquired resource information may be notified to the target secondary system device.
  • FIG. 7 is a flowchart illustrating a process example of a method of a target secondary system device side in a secondary system according to an embodiment of the present disclosure.
  • the device information and the resource request of the target secondary system device are sent to the resource management device, and the resource management device is used to manage the opportunity of the secondary system in the communication system to the spectrum resource of the primary system. Sexual use.
  • receiving step S704 receiving resource information available to the target secondary system device acquired by the resource management device based on the resource request, based on the device information of the target secondary system device, the resource information including the target secondary system device Indicates information about the transmitted waveform.
  • control step S706 the target secondary system device operation is controlled based on the received resource information.
  • embodiments of the present disclosure also disclose an electronic device, which may include one or more processors, which may be configured as respective units in the above device embodiments.
  • machine-executable instructions in the storage medium and the program product according to the embodiments of the present disclosure may also be configured to perform the method corresponding to the apparatus embodiment described above, and thus the content not described in detail herein may refer to the previous corresponding The description of the location will not be repeated here.
  • a storage medium for carrying the above-described program product including machine-executable instructions is also included in the disclosure of the present invention.
  • 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 the like.
  • a central processing unit (CPU) 801 executes various processes in accordance with a program stored in a read only memory (ROM) 802 or a program loaded from a storage portion 808 to a random access memory (RAM) 803.
  • ROM read only memory
  • RAM random access memory
  • data required when the CPU 801 executes various processes and the like is also stored as needed.
  • the CPU 801, the ROM 802, and the RAM 803 are connected to each other via a bus 804.
  • Input/output interface 805 is also coupled to bus 804.
  • the following components are connected to the input/output interface 805: an input portion 806 including a keyboard, a mouse, etc.; an output portion 807 including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), and the like, and a speaker and the like;
  • the storage portion 808 includes a hard disk or the like; and the communication portion 809 includes a network interface card such as a LAN card, a modem, and the like.
  • the communication section 809 performs communication processing via a network such as the Internet.
  • the driver 810 is also connected to the input/output interface 805 as needed.
  • a removable medium 811 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory or the like is mounted on the drive 810 as needed, so that a computer program read therefrom is installed into the storage portion 808 as needed.
  • a program constituting the software is installed from a network such as the Internet or a storage medium such as the removable medium 811.
  • such a storage medium is not limited to the removable medium 811 shown in FIG. 8 in which a program is stored and distributed separately from the device to provide a program to the user.
  • the detachable medium 811 include a magnetic disk (including a floppy disk (registered trademark)), an optical disk (including a compact disk read only memory (CD-ROM) and a digital versatile disk (DVD)), and a magneto-optical disk (including a mini disk (MD) (registered trademark) )) and semiconductor memory.
  • the storage medium may be a ROM 802, A hard disk or the like contained in the storage section 808 in which programs are stored and distributed to the user together with the device containing them.
  • FIGS. 9A and 9B A first application example according to an embodiment of the present disclosure will be described below with reference to FIGS. 9A and 9B.
  • the target secondary user as a cognitive radio device performs spectrum sensing of the environment in which it is located, for example, this example
  • a cognitive radio device is a WiFi device that typically utilizes a 20 MHz bandwidth that perceives a 20 MHz spectrum according to its bandwidth requirements, as shown in Figure 9A.
  • the cognitive radio device detects an idle spectrum of only 8 MHz therein, and reports the sensing result to the spectrum management apparatus of the present disclosure.
  • the spectrum management apparatus determines to utilize the 20 MHz 802.11a WiFi signal transmission content in the 8 MHz idle television spectrum for transmission. Multi-rate signal processing for spectral compression (compressed into an 8 MHz bandwidth).
  • the basic process of spectrum compression is to first interpolate the baseband digital signal samples by 3 times and then perform low-pass filtering (which can be implemented by FIR digital filtering) to finally obtain the required compressed spectrum.
  • the spectrum management apparatus of the present disclosure selects filter parameters (e.g., filter type, order, etc.) for the cognitive radio device and makes a spectrum compression indication so that the cognitive radio can perform spectral compression through a simple operation.
  • filter parameters e.g., filter type, order, etc.
  • the specific spectrum compression process is the same as in the prior art, and the present disclosure does not discuss this in detail.
  • Figure 9B shows a schematic diagram of a compressed WiFi signal being transmitted in an 8 MHz idle television spectrum.
  • the resource management method of the present disclosure for example, the following advantageous effects can be achieved: (1) For a limited available spectrum bandwidth, the spectrum of the transmitted signal of the cognitive radio device is compressed, the spectrum utilization is significantly improved, and no change is required.
  • the hardware of the cognitive radio can support different transmit spectrum bandwidths.
  • the cognitive radio's RF bandwidth is compressed from 20MHz to within 8MHz, enabling wideband signals to be transmitted over narrower TV channels; (2)
  • the appropriate filter type and filter parameters such as the order of the filter and the corresponding filter parameters
  • Adjacent frequency leakage avoids harmful interference to primary users (or other high-priority secondary users) operating on adjacent channels.
  • the FBMC is taken as an example to describe spectrum sharing of continuous or discontinuous spectrum based on multi-carrier technology. It should be understood that this example is equally applicable to other multi-carrier technologies such as OFDM.
  • FBMC-based spectrum sharing has lower out-of-band emissions than other multi-carrier techniques such as OFDM, so FBMC multi-carrier signals have lower adjacent frequency leakage (proximity leakage than OFDM multi-carrier signals) At least 30dB lower), resulting in higher spectrum utilization and spectrum access flexibility, as well as non-continuous spectrum access while meeting demanding interference rejection requirements.
  • 10A and 10B are schematic diagrams showing FBMC-based continuous spectrum access and spectrum sharing and FBMC-based discontinuous spectrum access and spectrum sharing, respectively. It can be seen that according to the present technology, since idle spectrum resources (including continuous and non-contiguous idle spectrum resources) can be utilized more flexibly, the spectrum utilization can be greatly improved as compared with the prior art.
  • FIG. 11 is a flowchart showing a process example of an FBMC-based spectrum management algorithm according to a second application example of the present disclosure.
  • a spectrum sensing device as a target secondary user of a cognitive radio device and device information are acquired by a resource management device according to an embodiment of the present disclosure (for example, such as reflecting a nonlinearity of a cognitive radio device)
  • Performance information such as the status of the IIP3 device
  • various types of information such as service type, QoS, and energy consumption requirements.
  • the resource management device inputs according to the frequency band currently occupied by the primary user and other users (for example, high priority secondary users), the interference suppression requirements of the users, and the device information of the target secondary user (such as the maximum transmission power). Third-order intermodulation power, etc.), calculates the start and end frequency of the available frequency band (ie, subcarrier).
  • step S1106 the resource management apparatus calculates the subcarrier number based on the calculated start and end point frequencies of the available frequency bands (subcarriers).
  • step S1108 the resource management apparatus obtains the number range of available subcarriers based on the calculated subcarrier number.
  • step S1110 the resource management apparatus selects the applicable subcarriers for spectrum sharing according to the obtained number range of available subcarriers, combined with the spectrum management rule of the environment in which the target secondary user is located, and the prediction of the third-order intermodulation products.
  • step S1112 the target secondary user communicates on the frequency band corresponding to the selected subcarrier, and returns to step S1102 before the next transmission period comes, according to the situation.
  • the target user's transmit waveform is appropriately re-adjusted.
  • the spectrum awareness result of the wireless environment in which the target secondary user is located such as the type of primary user or high priority secondary user and its spectrum usage.
  • For the frequency band that needs to protect the primary system it can be calculated by using the protection requirements of the primary system; for the identified frequency bands available to the target secondary users, the primary user (or high priority secondary user) can be discovered/analyzed by sensing. Interference signal, and then use the target sub-user's perceptual (feedback) information for analysis and calculation to select appropriate operating parameters (such as suitable for the target sub-user's emission spectrum parameters, etc.) and make necessary adjustments to effectively protect or enhance the subsystem.
  • Equipment information and actual performance of the target secondary users (especially predictions of third-order intermodulation products), such as maximum transmit power of cognitive radio equipment, input third-order intercept point power, operating frequency range, processor capability, Remaining power, etc.
  • FIG. 12 is a flowchart illustrating an example of a process of selecting subcarriers suitable for a target secondary user, according to an embodiment of the present disclosure.
  • step S1202 the resource management apparatus acquires a radio environment spectrum sensing result of the target secondary user, including a spectrum sensing result for the primary user or other secondary users on the candidate frequency band.
  • step S1204 the available subcarrier ranges and numbers are determined based on the perceived result and the interference suppression requirements (ie, related to radio spectrum management regulations) that the target secondary user needs to obey (as determined by the local spectrum management organization).
  • step S1206 according to the service demand and QoS requirements of the target secondary user, the applicable transmission subcarriers are further selected according to the device information and actual performance of the target secondary user. Transmit power.
  • the influence of the nonlinear characteristics of the target secondary user is taken into consideration, it is also necessary to predict the third-order intermodulation products generated by the selected subcarriers. If there is a third-order intermodulation product exceeding the interference threshold, it is necessary to use other The subcarriers may need to reduce the transmit power of the subcarriers.
  • a plurality of functions included in one unit in the above embodiment may be implemented by separate devices.
  • a plurality of functions implemented by a plurality of units in the above embodiments may be implemented by separate devices, respectively.
  • one of the above functions may be implemented by a plurality of units. Needless to say, such a configuration is included in the technical scope of the present disclosure.
  • the steps described in the flowcharts include not only processes performed in time series in the stated order, but also processes performed in parallel or individually rather than necessarily in time series. Further, even in the step of processing in time series, it is needless to say that the order can be appropriately changed.

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Abstract

公开了一种资源管理装置、资源管理方法及通信系统中的装置和方法。该资源管理装置用于管理通信系统中的次系统对主系统的频谱资源的机会性利用，该资源管理装置包括：接收单元，被配置成接收次系统中的一个或多个次系统设备当中的目标次系统设备的设备信息及资源请求；可用资源获取单元，被配置成响应于资源请求，基于目标次系统设备的设备信息而获取目标次系统设备可用的资源信息，其中，资源信息包括与用于目标次系统设备的发射波形有关的指示信息；以及通知单元，被配置成将所获取的资源信息通知给目标次系统设备。根据本公开的实施例，能够实现适合于目标次系统设备的频谱资源的更精细分配，从而提高了频谱资源的利用效率。

Description

资源管理装置、资源管理方法及通信系统中的装置和方法 技术领域
本公开一般地涉及无线通信技术领域，更具体地，涉及用于灵活且高效地管理通信系统中的次系统对主系统的频谱资源的机会性利用的资源管理装置、资源管理方法以及次系统中的目标次系统设备侧的装置和方法。
背景技术
随着无线通信技术的发展，频谱资源越来越紧张，而现有研究表明，已分配的授权频谱的资源利用率普遍不高，认知无线电技术作为软件无线电技术的一个智能化演进，是一种提高频谱实际利用率的关键技术。认知无线电技术的引入，虽然可以改善频谱资源紧张的问题，但由于在相同频段下发射不同的调制信号，未授权的认知无线电设备(未授权用户或次用户)发出的信号对同频段的授权用户(主用户)或者对频谱资源有低优先级使用权的次用户发出的信号对于对同频段的对频谱资源具有高优先级使用权的次用户有可能产生干扰，因此需要建立认知引擎(cognitive engine)及频谱协调器等频谱管理装置，使用先进的算法来管理各次用户的发射频谱，以保证主用户或高优先级次用户的通信不会受到有害的干扰。
然而，在现有的频谱资源管理技术中，对于目标次用户的频谱资源分配仅包括目标次用户应该工作在哪个频段的粗略频谱资源分配，而对于诸如目标次用户应该采用的发射波形(包括多址方式、调制方式、具体时域资源(尤其在多载波的情况下，各个子载波上的相关信息)等)的更精细的频谱资源分配，现有技术中并未提及。
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。但是，应当理解，这个概述并不是关于本公开的穷举性概述。它并不是意图用来确定本公开的关键性部分或重要部分，也不是意 图用来限定本公开的范围。其目的仅仅是以简化的形式给出关于本公开的某些概念，以此作为稍后给出的更详细描述的前序。
鉴于以上问题，本公开的目的是提供一种用于管理通信系统中的次系统对主系统的频谱资源的机会性利用的资源管理装置和资源管理方法以及次系统中的目标次系统设备侧的装置和方法，其能够根据作为认知无线电设备的目标次系统设备所处环境的全面频谱感知结果、目标次系统设备的设备状态、主系统和次系统对干扰抑制的要求等多方面因素，动态地实现对目标次系统设备的精细频谱资源分配，以更加高效地利用无线电频谱资源，并避免对共址其它用户(例如主用户或高优先级次系统设备)产生有害无线干扰，实现目标次系统设备与主用户或高优先级次系统设备之间的高效频谱共享。此外，还达到以下至少之一的技术效果：降低了认知无线电设备的复杂性与成本，减小了通信系统中的频谱管理开销，提高了认知无线电设备在不同电磁环境下的应变性与适用性，并且还提高了频谱利用率。
根据本公开的一方面，提供了一种通信系统中的资源管理装置，该资源管理装置用于管理通信系统中的次系统对主系统的频谱资源的机会性利用，资源管理装置包括：接收单元，被配置成接收次系统中的一个或多个次系统设备当中的目标次系统设备的设备信息及资源请求；可用资源获取单元，被配置成响应于资源请求，基于目标次系统设备的设备信息而获取目标次系统设备可用的资源信息，其中，该资源信息包括与用于目标次系统设备的发射波形有关的指示信息；以及通知单元，被配置成将所获取的资源信息通知给目标次系统设备。
根据本公开的实施例，上述设备信息可包括与目标次系统设备支持的发射波形有关的参数。
根据本公开的另一实施例，上述设备信息可包括与目标次系统设备的非线性特性有关的参数，并且可用资源获取单元还可基于与目标次系统设备的非线性特性有关的参数而获取与用于目标次系统设备的发射波形有关的指示信息。
根据本公开的另一实施例，与用于目标次系统设备的发射波形有关的指示信息可包括发射波形的类型。
根据本公开的另一实施例，在发射波形的类型属于多载波的情况下，与用于目标次系统设备的发射波形有关的指示信息还包括子载波频谱段 数、子载波序号和子载波的发射功率中的至少一种。
根据本公开的另一实施例，属于多载波的发射波形类型包括正交频分复用(OFDM)和基于滤波器组的多载波(FBMC)中的至少一种。
根据本公开的另一实施例，与用于目标次系统设备的发射波形有关的指示信息包括与要采用的滤波器有关的参数。
根据本公开的另一实施例，接收单元还接收来自目标次系统设备的对通信系统的无线环境的感知信息，并且可用资源获取单元还可基于该感知信息获取资源信息。
根据本公开的另一实施例，在目标次系统设备支持的发射波形的类型属于多载波的情况下，感知信息包括与各个子载波对应频率上的干扰有关的信息。
根据本公开的另一实施例，感知信息可包括与感知目标频谱资源的占用情况有关的信息。
根据本公开的另一实施例，感知信息可包括与占用感知目标频谱资源的通信设备的类型有关的信息。
根据本公开的另一方面，还提供了一种通信系统中的装置，该装置位于通信系统中的次系统的一个或多个次系统设备当中的目标次系统设备侧，该装置包括：发送单元，被配置成将目标次系统设备的设备信息和资源请求发送给资源管理装置，其中，该资源管理装置用于管理通信系统中的次系统对主系统的频谱资源的机会性利用；接收单元，被配置成接收资源管理装置响应于资源请求、基于目标次系统设备的设备信息而获取的目标次系统设备可用的资源信息，其中，该资源信息包括与用于目标次系统设备的发射波形有关的指示信息；以及控制单元，被配置成根据所接收的资源信息而控制目标次系统设备工作。
根据本公开的另一方面，还提供了一种通信系统中的资源管理方法，该资源管理方法用于管理通信系统中的次系统对主系统的频谱资源的机会性利用，该资源管理方法包括：接收步骤，用于接收次系统中的一个或多个次系统设备当中的目标次系统设备的设备信息及资源请求；可用资源获取步骤，用于响应于所述资源请求，基于目标次系统设备的设备信息而获取目标次系统设备可用的资源信息，其中，该资源信息包括与用于目标次系统设备的发射波形有关的指示信息；以及通知步骤，用于将所获取的资源信息通知给目标次系统设备。
根据本公开的另一方面，还提供了一种通信系统中的方法，该方法在通信系统中的次系统的一个或多个次系统设备当中的目标次系统设备侧执行，该方法包括：发送步骤，用于将目标次系统设备的设备信息和资源请求发送给资源管理装置，其中，该资源管理装置用于管理通信系统中的次系统对主系统的频谱资源的机会性利用；接收步骤，用于接收资源管理装置响应于资源请求、基于目标次系统设备的设备信息而获取的目标次系统设备可用的资源信息，其中，该资源信息包括与用于目标次系统设备的发射波形有关的指示信息；以及控制步骤，用于根据所接收的资源信息而控制目标次系统设备工作。
根据本公开的另一方面，还提供了一种电子设备，该电子设备包括一个或多个处理器，这一个或多个处理器可被配置成执行上述根据本公开的实施例的资源管理装置和目标次系统设备侧的装置中的各个单元的功能或者上述根据本公开的实施例的资源管理方法和在目标次系统设备侧执行的方法中的各个步骤中的处理。
根据本公开的另一方面，还提供了一种存储介质，该存储介质包括机器可读的程序代码，当在信息处理设备上执行程序代码时，该程序代码使得信息处理设备执行上述根据本公开的实施例的资源管理方法和/或在目标次系统设备侧执行的方法。
根据本公开的另一方面，还提供了一种程序产品，该程序产品包括机器可执行的指令，当在信息处理设备上执行指令时，该指令使得信息处理设备执行上述根据本公开的实施例的资源管理方法和/或在目标次系统设备侧执行的方法。
根据本公开的实施例，能够实现对作为认知无线电设备的目标次系统设备的更精细频谱资源分配，以在不对主系统中的主用户或高优先级次系统设备产生有害干扰的情况下实现更高效的频谱资源共享。
在下面的说明书部分中给出本公开实施例的其它方面，其中，详细说明用于充分地公开本公开实施例的优选实施例，而不对其施加限定。
附图说明
本公开可以通过参考下文中结合附图所给出的详细描述而得到更好的理解，其中在所有附图中使用了相同或相似的附图标记来表示相同或者相似的部件。所述附图连同下面的详细说明一起包含在本说明书中并形成 说明书的一部分，用来进一步举例说明本公开的优选实施例和解释本公开的原理和优点。其中：
图1是示出包括主系统和次系统的通信系统的一个示例的示意图；
图2是示出根据本公开的实施例的通信系统中的资源管理装置的功能配置示例的框图；
图3A示出根据本公开的实施例的资源管理装置与目标次系统设备之间的信息交互过程的第一示例的示意图；
图3B示出根据本公开的实施例的资源管理装置与目标次系统设备之间的信息交互过程的第二示例的示意图；
图3C示出根据本公开的实施例的资源管理装置与目标次系统设备之间的信息交互过程的第三示例的示意图；
图4是示出根据本公开的实施例的次系统中的目标次系统设备侧的装置的功能配置示例的框图；
图5是示出根据本公开的实施例的次系统中的目标次系统设备侧的装置的另一功能配置示例的框图；
图6是示出根据本公开的实施例的通信系统中的资源管理方法的过程示例的流程图；
图7是示出根据本公开的实施例的次系统中的目标次系统设备侧执行的方法的过程示例的流程图；
图8是示出作为本公开的实施例中可采用的信息处理设备的个人计算机的示例结构的框图；
图9A和图9B是示出根据本公开的实施例的第一应用示例的说明图；
图10A和图10B是示出根据本公开的实施例的第二应用示例的说明图；
图11是示出根据本公开的第二应用示例的基于FBMC的频谱管理算法的过程示例的流程图；以及
图12是示出根据本公开的第二应用示例的选择适合于目标次用户的子载波的过程示例的流程图。
具体实施方式
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，符合与系统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它细节。
这里，在具体描述本公开的实施例之前，为了便于对本公开的理解，将给出本公开中的一些概念的简要介绍。
主系统和次系统
主系统是对频谱资源具有合法使用权的系统，主系统中可以有主基站/主接入点以及一个或多个用户(主用户)。次系统，在一些文献中也称为认知无线电设备，只能在不对主系统使用其频谱通信造成有害干扰的前提下机会性地使用该频谱，次系统中可以有次系统设备，包括次基站/次接入点以及一个或多个用户(次用户)。次系统可以是没有频谱使用权的通信系统，例如，机会性利用wifi/雷达频段资源进行通信的LTE通信系统，又例如机会性利用广播电视频段资源的wifi通信系统。可替选地，次系统也可以是具有频谱使用权的系统，但是在频谱使用上具有比主系统低的优先级别。例如，运营商在部署新的基站以提供新服务的时候，已有基站以及提供的服务被作为主系统而具有频谱使用优先权，新的基站以及提供的服务被作为次系统而具有较低优先级的频谱使用权。
作为一个应用示例，将参照图1描述根据本公开的实施例的通信系统的一个示例。图1是示出根据本公开的实施例的包括主系统和次系统的通信系统的一个示例的示意图。如图1所示，在通信系统100中，由于广播电视频谱本身就是分配给广播电视系统使用的，因此广播电视系统是主系统101，包括主基站1011和多个主用户(电视机)1012。移动通信系统102、103和104是次系统，分别包括次基站1021、1031、1041和次用户1022、1032、1042。在该通信系统100中，可以动态地利用数字广播电视 频谱上例如某些没有播放节目的频道的频谱或者相邻频道的频谱，在不干扰电视信号接收的情况下，进行无线移动通信。
具体地，UHF频段是划分为广播电视服务的，因此广播电视系统在该频段具有最高的优先级别，是主系统。此外，UHF中广播电视系统在某一时段、某一区域所不使用的频谱资源可以被分配给其它通信系统使用，因此这些其它通信系统是次系统。
这种主次系统共存的通信方式要求次系统的应用不会对主系统甚至高优先级次系统的应用造成不良影响，换言之，次系统的频谱利用所造成的影响能被控制在主系统容许的范围之内，进一步地，在高优先级次系统容许的范围之内。在保证对主系统和/或高优先级次系统的干扰在一定范围内、即不超过其干扰门限的情况下，多个次系统可以对可供主系统和/或高优先级次系统使用的频谱资源进行使用。
本领域的技术人员应该理解，虽然图1中示出了主系统为广播电视系统的情形，但是本公开并不限于此，主系统也可以为具有频谱使用权的移动通信系统，而次系统也可以为其它需要利用频谱资源进行通信的系统，比如智能抄表系统。此外，次系统的数量也不限于三个，而是可以有更多或更少。
应指出，在次系统区分高低优先级的应用场景中，由于优先将资源分给高优先级次系统，低优先级次系统对高优先级次系统没有正在占用的资源可以进行机会性使用，因此，在这样的示例中也可以将高优先级的次系统视为主系统。
地理位置数据库(GLDB)
目前对主系统保护的一种最主要的方式就是将主系统的覆盖信息存放在数据库(例如地理位置数据库(GLDB)或者认知引擎数据库)中。这个数据库还存储有例如主系统所能容许的干扰界限，主系统对频谱资源的使用情况。同一区域内的次系统在开始利用同一区域内的主系统的频谱之前首先要访问该数据库并提交次系统的状态信息，例如位置信息、频谱发射模板(spectrum emission mask)、传输带宽和载波频率等等。然后，数据库根据次系统的状态信息计算次系统对主系统的干扰量，并且根据所计算的当前状态下的次系统对主系统的干扰量来计算当前状态下的次系统的预计可用频谱资源。地理位置数据库的定义及其确定预计可用频谱资 源的具体方法是现有技术，例如可以参见参考文献“Draft of ECC report:Technical and operational requirements for the operation of white space devices under geo-location approach”，CEPT，ECC186,2013年1月，在此省略了其详细描述。
频谱协调器(Spectrum Coorinator)
如上所述的，认知无线电中通常通过地理位置数据库对主系统的正常工作进行保护，次系统可以直接访问地理位置数据库从而获取可用的频谱资源。在进一步发展的技术中，在次系统侧还设置了频谱协调器，主要用于管理/协调次系统之间的共存(例如，当多个位置接近的次系统都希望使用主系统频谱资源时，频谱协调器需要进行协调)，从而提高次系统的通信质量及频谱利用效率。具体地，频谱协调器收集其管理的次系统的信息并请求数据库计算可用资源，在获取可用资源后，基于各个次系统的例如优先级、QoS需求对相应资源进行调整并分配至各个次系统。
应指出，在现有的认知无线电技术中，频谱协调器和地理位置数据库可分开设置也可集中设置。地理位置数据库主要用于根据次系统的地理位置等状态信息而计算不会干扰主系统的可用频谱资源，而频谱协调器主要用于管理/协调次系统之间的共存(例如，当多个位置接近的次系统都希望使用主系统频谱资源时，频谱协调器需要进行协调)。在本公开的实施例中，为了描述方便，将频谱协调器和地理位置数据库统一称为资源管理装置而不进行区分，并且本公开的实施例中要实现的功能可由频谱协调器来实现而保持地理位置数据库的现有配置不变，或者也可由地理位置数据库来实现而保持频谱协调器的现有配置不变。
接下来，将参照图2描述根据本公开的实施例的通信系统中的资源管理装置的功能配置示例。图2是示出根据本公开的实施例的通信系统中的资源管理装置的功能配置示例的框图。
如图2所示，根据本实施例的资源管理装置200可包括接收单元202、可用资源获取单元204和通知单元206。该资源管理装置200用于管理通信系统中的次系统对主系统的频谱资源的机会性利用，即，在不对主系统的应用产生有害干扰的情况下，次系统可机会性地暂时利用主系统未使用的频谱资源用于其自己的应用。接下来将详细描述各个单元的功能配置示例。
接收单元202可被配置成接收次系统中的一个或多个次系统设备当中的目标次系统设备的设备信息及资源请求。优选地，次系统设备可包括次系统基站或次系统接入点、次系统用户终端或其他频谱共享认知无线电设备。这里的设备信息可包括目标次系统设备的诸如上述位置信息、频谱发射模板、传输带宽和载波频率等的状态信息。
可用资源获取单元204可被配置成响应于该资源请求，基于目标次系统设备的设备信息而获取目标次系统设备可用的资源信息，该资源信息可包括与用于目标次系统设备的发射波形有关的指示信息。在资源管理装置200由地理位置数据库实现的示例中，地理位置数据库根据设备信息计算在不对主系统造成有害干扰的情况下目标次系统设备可用的频段以及发射波形；在资源管理装置200由频谱协调器实现的示例中，基于地理位置数据库提供的不对主系统造成有害干扰的可用资源，频谱协调器计算对例如高优先级次系统干扰在预定范围的情况下，低优先级次系统设备可用的发射波形及相应的频谱资源。
优选地，与用于目标次系统设备的发射波形有关的指示信息可包括发射波形的类型(诸如OFDM、FBMC、CDMA、GSM等)，此外，还可包括每一发射波形类型对应的发射频谱和发射功率中的至少一种。此外，优选地，在发射波形的类型属于多载波的情况下，与用于目标次系统设备的发射波形有关的指示信息还包括子载波频谱段数、子载波序号(例如，各段频谱的起止子载波序号)和子载波的发射功率中的至少一种。多载波的类型可包括OFDM和FBMC中的至少一种。应理解，发射波形类型的选择除了目标次系统设备支持的发射波形有关之外，还与例如待保护对象对干扰抑制的要求等因素有关。例如，与在对邻频干扰抑制苛刻的环境中，由于与OFDM系统相比FBMC技术具有更低的带外杂散辐射和更高的频谱利用率，因此可以优先考虑使用FBMC技术。
优选地，与用于目标次系统设备的发射波形有关的指示信息还包括与要采用的滤波器有关的参数，例如成形滤波器窗函数的类型(凯泽窗、汉明窗、布莱克曼窗等)、滤波器参数(阶数、系数等)、采样速率等参数。
以下表1示出了与用于目标次系统设备的发射波形有关的指示信息所包括的参数的示例。应理解，这些参数仅是示例而非限制，指示信息可包括这些参数中的一个或多个，并且还可包括除这些参数之外的其它参数。
表1
Figure PCTCN2016070690-appb-000001
通知单元206可被配置成将所获取的资源信息通知给目标次系统设备。
以下将参照图3A至图3C详细描述根据本公开的实施例的资源管理装置与目标次系统设备之间进行信息交互以获得目标次系统设备可用的资源信息的过程示例。
第一示例
图3A是示出根据本公开的实施例的资源管理装置与目标次系统设备之间的信息交互过程的第一示例的示意图。
如图3A所示，在S11中，目标次系统设备向资源管理装置200发送目标次系统设备的设备信息和资源请求。
接下来，在S12中，在保证不会对主系统产生有害干扰的情况下，资源管理装置200的可用资源获取单元204可首先响应于资源请求，以传统方式基于目标次系统设备的地理位置而确定目标次系统设备可用的频段、最大发射功率等传统的可用资源参数。应理解，在地理位置数据库和频谱 协调器分开设置的情况下，这里的可用资源参数可以是由地理位置数据库根据目标次系统设备的地理位置而确定的，并且频谱协调器可以从地理位数据库获取这些信息。
优选地，为了更精细地确定可用于目标次系统设备的频谱资源(即，用于目标次系统设备的发射波形指示信息)，除了上述地理位置等信息之外，来自目标次系统设备的设备信息还可包括与目标次系统设备支持的发射波形有关的参数，诸如目标次系统设备支持的波形类型(例如，OFDM、FBMC、CDMA等)、最大发射功率等等。
进一步地，在S13中，可用资源获取单元204可根据设备信息中包括的与目标次系统设备支持的发射波形有关的参数而获取与用于目标次系统设备的发射波形有关的指示信息。
此外，优选地，为了更可靠地避免或降低由于目标次系统设备的非线性特性引起的频谱再生对主用户或其它高优先级次系统设备的射频干扰，在更精细地对目标次系统设备进行频谱资源分配时，还需要将目标次系统设备的非线性特性纳入考虑。尤其是在用于目标次系统设备的波形类型属于多载波的情况下，由于非线性问题导致的交调产物(例如，对于非连续频谱的多载波信号的三阶交调产物(IMP3))中的一部分可能落在主系统的接收机的通带内，因此其影响更为突出。
鉴于此，优选地，设备信息还可包括与目标次系统设备的非线性特性有关的参数，诸如三阶交调截取点输入功率(IIP3)、1dB压缩点输入功率(P1dB)等，并且可用资源获取单元204可进一步基于与目标次系统设备的非线性特性有关的参数来获取与用于目标次系统设备的发射波形有关的指示信息。例如，在例如三阶交调产物超出了主系统的干扰门限时，可用资源获取单元204可相应地改变要用于目标次系统设备的子载波或者降低子载波的发射功率等，以保护主系统的应用。
应理解，尽管以上作为示例描述了来自目标次系统设备的设备信息包括与目标次系统设备支持的发射波形有关的参数以及与目标次系统设备的非线性特性有关的参数，但是设备信息还可包括但不限于例如目标次系统设备的工作频率范围、处理器能力、剩余电量等其它参数，并且资源管理装置200的可用资源获取单元204可结合多方面的因素来确定适合于目标次系统设备的发射波形，以实现更灵活且高效的频谱资源分配。
然后，在S14中，资源管理装置200的通知单元206可将所确定的可 用资源参数和与用于目标次系统设备的发射波形有关的指示信息一起通知给目标次系统设备。
第二示例
作为另一优选实施例，接收单元202还可接收来自目标次系统设备的对通信系统的无线环境的感知信息，该感知信息可以例如包括目标次系统设备周围的干扰等信息。优选地，在目标次系统设备支持的发射波形的类型属于多载波的情况下，该感知信息可包括与各个子载波对应频率上的干扰有关的信息。应理解，该感知信息不一定是由目标次系统设备直接感知的，而是也可以由例如目标次系统设备的从设备(slave device)来感知并报告给目标次系统设备，从而由目标次系统设备发送给资源管理装置。
图3B是示出根据本公开的实施例的资源管理装置与目标次系统设备之间的信息交互过程的第二示例的示意图。
如图3B所示，在S21中，目标次系统设备向资源管理装置200发送设备信息、资源请求和对无线环境的感知信息。
然后，在S22中，资源管理装置200的可用资源获取单元204可响应于资源请求，以传统方式基于设备信息中包括的地理位置和感知信息中的干扰等信息而确定目标次系统设备可用的频段、最大发射功率等传统可用资源参数。
接下来，在S23中，可用资源获取单元204可进一步基于设备信息中包括的与目标次系统设备支持的发射波形有关的参数等确定与用于目标次系统设备的发射波形有关的指示信息。
在S24中，资源管理装置200的通知单元206可将所确定的可用资源参数和发射波形指示信息一起通知给目标次系统设备。
第三示例
在一个优选实施例中，感知信息可包括与感知目标频谱资源的占用情况有关的信息。即，目标次系统设备对资源管理装置确定的可用频段进行感知，以确定其在该可用频段上工作时是否会被干扰。图3C示出了根据该优选实施例的资源管理装置与目标次系统设备之间的信息交互示例。图3C是示出根据本公开的实施例的资源管理装置与目标次系统设备之间的 信息交互过程的第三示例的示意图。
如图3C所示，在S31中，目标次系统设备向资源管理装置200发送设备信息和资源请求。
然后，在S32中，资源管理装置200的可用资源获取单元204可响应于资源请求，以传统方式例如基于地理位置等信息确定可用于目标次系统设备的频段、最大发射功率等传统可用资源参数。
在S33中，资源管理装置200的通知单元206将该传统可用资源参数通知给目标次系统设备。
接下来，在S34中，目标次系统设备根据所接收的传统可用资源参数而在相应的可用频段上进行感知，以确定目标次系统设备在该可用频段上工作时是否会被干扰。
然后，在S35中，目标次系统设备将包括对预计可用频段的感知结果(即，与感知目标频谱资源的占用情况有关的信息)的感知信息报告给资源管理装置。
在S36中，可用资源获取单元204进一步基于该感知信息以及设备信息中的与目标次系统设备支持的发射波形有关的参数而确定用于目标次系统设备的发射波形的指示信息。
在S37中，通知单元206将该发射波形指示信息通知给目标次系统设备。
可以看出，在该示例中，资源管理装置可以首先根据传统技术、基于地理位置信息而确定目标次系统设备的预计可用频谱资源，并然后结合目标次系统设备对在该预计可用频谱资源上工作是否会被干扰的感知结果和目标次系统设备支持的发射波形等信息而进一步精细地确定可用于目标次系统设备的发射波形相关信息，从而能够充分保证目标次系统设备的通信性能。
此外，优选地，在精细地确定可用于目标次系统设备的发射波形时，还需要考虑与占用感知目标频谱资源的通信设备的类型有关的信息。即，上述感知信息还可包括与占用感知目标频谱资源的通信设备的类型有关的信息。例如，如果占用感知目标频谱资源的通信设备的类型属于主系统中的主用户或者其它高优先级次系统设备，则由于需要优先保证这些通信设备的应用不会受到有害干扰，因此需要相应地调整用于目标次系统设备的资源。另一方面，如果占用感知目标频谱资源的通信设备是比目标次系 统设备的优先级低的低优先级次系统设备，则由于需要优先保证高优先级的目标次系统设备的应用，因此目标次系统设备可优先在该感知目标频谱资源上工作。
应理解，除了上述因素之外，根据本公开的实施例的资源管理装置在确定可用于目标次系统设备的资源信息时，还可将例如目标次系统设备的业务需求、服务质量(QoS)要求等因素纳入考虑，以在保障主用户和/或高优先级次系统设备的通信性能的前提下，最大程度地提高无线频谱资源的利用率，同时满足目标次系统设备的通信性能要求。
此外，还应理解，尽管以上作为示例描述了资源管理装置与目标次系统设备之间的信息交互，但是这仅是示例而非限制，并且上述信息交互过程中的描述的顺序并不对本公开构成限制。例如，对于图3A所示的步骤S12和步骤S13以及图3B所示的步骤S22和步骤S23，这两个步骤可以同时执行。
如上所述，根据本公开的实施例，资源管理装置通过综合考虑多方面的因素，包括但不限于目标次系统设备的设备信息(例如地理位置、可支持的发射波形(包括发射波形的类型、最大发射功率、工作频率范围等)、非线性特性以及能力(诸如处理器能力、剩余电量等)，对无线环境的频谱感知结果(例如干扰信息、感知目标频谱资源的占用情况以及占用感知目标频谱资源的设备类型等)，以及业务需求和QoS要求等，确定适合于目标次系统设备的发射波形(诸如发射波形的类型、子载波频谱段数、子载波序号、发射功率以及采用的相关滤波器参数等)，从而实现了对频谱资源的更精细分配，能够提高频谱资源利用效率，同时满足各个系统的通信性能要求。
接下来，将参照图4描述根据本公开的实施例的次系统中的目标次系统设备侧的装置的功能配置示例。图4是示出根据本公开的实施例的次系统中的目标次系统设备侧的装置的功能配置示例的框图。
如图4所示，根据本实施例的装置400可包括发送单元402、接收单元404和控制单元406。以下将分别详细描述各个单元的功能配置示例。
发送单元402可被配置成将目标次系统设备的设备信息和资源请求发送给资源管理装置，该资源管理装置用于管理通信系统中的次系统对主系统的频谱资源的机会性利用。
如之前的实施例所述，设备信息优选地可包括例如与目标次系统设备 支持的发射波形有关的参数、与目标次系统设备的非线性特性有关的参数等，从而资源管理装置可进一步地基于这些设备信息而更加精细地确定目标次系统设备可用的资源信息。
接收单元404可被配置成接收资源管理装置响应于资源请求、基于目标次系统设备的设备信息而获取的目标次系统设备可用的资源信息，该资源信息可包括与用于目标次系统设备的发射波形有关的指示信息。
作为优选示例，与用于目标次系统设备的发射波形有关的指示信息可包括发射波形的类型，并且在发射波形的类型属于多载波(包括OFDM、FBMC等)的情况下，该指示信息还可包括子载波频谱段数、子载波序号和子载波的发射功率中的至少一种。此外，优选地，与用于目标次系统设备的发射波形有关的指示信息还可包括与要采用的滤波器有关的参数，诸如窗函数类型、阶数、采样速率等。
控制单元406可被配置成根据所接收的来自资源管理装置的资源信息而控制目标次系统设备进行工作。
应指出，在具体的实现示例中，在装置400中还可存在一个选择器，该选择器响应于来自控制单元406的控制信号而选择例如基于OFDM或FBMC等的基带处理电路，并且基于所接收的资源信息而对频率转换器、功率放大器、滤波器、采样器等进行配置，以使得目标次系统设备根据所接收的资源信息进行工作。此外，应理解，基于OFDM或基于FBMC的基带处理电路可在一个芯片集或者多个芯片集中实现。
图5是示出根据本公开的实施例的次系统中的目标次系统设备侧的装置的另一功能配置示例的框图。
如图5所示，根据该实施例的装置500可包括感知单元502、发送单元504、接收单元506和控制单元508。其中，发送单元504、接收单元506和控制单元508的功能配置与上述发送单元402、接收单元404和控制单元406的功能配置相同，在此不再重复描述。这里将仅详细描述感知单元502的功能配置示例。
感知单元502可被配置成对通信系统的无线环境进行感知以获得相应的感知信息。应理解，该感知单元502可以位于目标次系统设备上以由目标次系统设备直接对无线环境进行感知，或者也可以是目标次系统设备的从设备(slave device)，以由从设备进行感知并报告给目标次系统设备。例如，主用户是电视，目标次系统设备是家庭基站，从设备可以是利用电 视频段的智能终端(例如，移动电话、平板电脑等)，可以由家庭基站分工给各个智能终端分别针对一个目标频段进行感知并报告给家庭基站。
该感知信息可包括例如目标次系统设备周围的干扰信息，并且在目标次系统设备支持的发射波形的类型属于多载波的情况下，该感知信息可包括与各个子载波对应频率上的干扰有关的信息。此外，优选地，感知信息还可包括感知目标频谱资源的占用情况有关的信息以及与占用感知目标频谱资源的通信设备的类型有关的信息等。
发送单元504还可将感知单元502获得的感知信息发送给资源管理装置，从而资源管理装置可综合考虑来自目标次系统设备的设备信息、感知信息等而确定目标次系统设备可用的资源信息。
应理解，这里描述的目标次系统设备侧的装置的功能配置示例是与先前描述的资源管理装置相对应的，因此在此未详细描述的内容可参见先前相应位置的描述，在此不再重复进行描述。
此外，根据本公开的实施例，作为认知无线电设备的目标次系统设备仅需要通过信息交互从资源管理装置获取可用于其自身应用的频谱资源而无需执行复杂的计算，因而可以简化目标次系统设备的配置，降低成本和功耗。
此外，还应理解，尽管这里参照附图描述根据本公开的实施例的资源管理装置和目标次系统设备侧的装置的功能配置示例，但是这仅是示例而非限制，并且本领域技术人员可以适当地对上述功能配置进行修改，例如可对各个实施例中的功能模块进行添加、删除或者组合等，并且这样的修改均落入本公开的范围内。
与根据本公开的实施例的装置相对应地，本公开还提供了相应的资源管理方法和在目标次系统设备侧执行的方法。以下将参照图6至图7描述根据本公开的实施例的通信系统的资源管理方法和在次系统中的目标次系统设备侧执行的方法的过程示例。
首先，将参照图6描述根据本公开的实施例的通信系统中的资源管理方法的过程示例。图6是示出根据本公开的实施例的通信系统中的资源管理方法的过程示例的流程图。该资源管理方法用于管理通信系统中的次系统对主系统的频谱资源的机会性利用。
如图6所示，在接收步骤S602中，接收次系统中的一个或多个次系统设备当中的目标次系统设备的设备信息及资源请求。这里的设备信息可 包括例如目标次系统设备的地理位置，并且还可优选地包括例如与目标次系统设备支持的发射波形有关的参数以及与目标次系统设备的非线性特性有关的参数等。
接下来，在可用资源获取步骤S604中，响应于资源请求，基于目标次系统设备的设备信息而获取目标次系统设备可用的资源信息，该资源信息包括与用于目标次系统设备的发射波形有关的指示信息。该指示信息优选地可包括发射波形的类型，并且在发射波形的类型属于多载波(诸如OFDM、FBMC等)的情况下，该指示信息还可包括子载波频谱段数、子载波序号和子载波的发射功率中的至少一种。此外，优选地，该指示信息还可包括与要采用的滤波器有关的参数。
然后，在通知步骤S606中，可将所获取的资源信息通知给目标次系统设备。
以下将参照图7描述根据本公开的实施例的次系统中的目标次系统设备侧的方法的过程示例。图7是示出根据本公开的实施例的次系统中的目标次系统设备侧的方法的过程示例的流程图。
如图7所示，在发送步骤S702中，将目标次系统设备的设备信息和资源请求发送给资源管理装置，该资源管理装置用于管理通信系统中的次系统对主系统的频谱资源的机会性利用。
接下来，在接收步骤S704中，接收资源管理装置响应于资源请求、基于目标次系统设备的设备信息而获取的目标次系统设备可用的资源信息，该资源信息包括与用于目标次系统设备的发射波形有关的指示信息。
然后，在控制步骤S706中，根据所接收的资源信息而控制目标次系统设备工作。
应指出，尽管以上描述了根据本公开的实施例的方法的过程示例，但是这仅是示例而非限制，并且本领域技术人员可根据本公开的原理对以上实施例进行修改，例如可对各个实施例中的步骤进行添加、删除或者组合等，并且这样的修改均落入本公开的范围内。
此外，还应指出，这里的方法实施例是与上述装置实施例相对应的，因此在方法实施例中未详细描述的内容可参见装置实施例中相应位置的描述，在此不再重复描述。
此外，本公开的实施例还公开了一种电子设备，该电子设备可包括一个或多个处理器，这些处理器可被配置成上述装置实施例中的各个单元的 功能。
应理解，根据本公开的实施例的存储介质和程序产品中的机器可执行的指令还可以被配置成执行与上述装置实施例相对应的方法，因此在此未详细描述的内容可参考先前相应位置的描述，在此不再重复进行描述。
相应地，用于承载上述包括机器可执行的指令的程序产品的存储介质也包括在本发明的公开中。该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。
另外，还应该指出的是，上述系列处理和装置也可以通过软件和/或固件实现。在通过软件和/或固件实现的情况下，从存储介质或网络向具有专用硬件结构的计算机，例如图8所示的通用个人计算机800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等。
在图8中，中央处理单元(CPU)801根据只读存储器(ROM)802中存储的程序或从存储部分808加载到随机存取存储器(RAM)803的程序执行各种处理。在RAM 803中，也根据需要存储当CPU 801执行各种处理等等时所需的数据。
CPU 801、ROM 802和RAM 803经由总线804彼此连接。输入/输出接口805也连接到总线804。
下述部件连接到输入/输出接口805：输入部分806，包括键盘、鼠标等等；输出部分807，包括显示器，比如阴极射线管(CRT)、液晶显示器(LCD)等等，和扬声器等等；存储部分808，包括硬盘等等；和通信部分809，包括网络接口卡比如LAN卡、调制解调器等等。通信部分809经由网络比如因特网执行通信处理。
根据需要，驱动器810也连接到输入/输出接口805。可拆卸介质811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810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808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拆卸介质811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8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拆卸介质811。可拆卸介质811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 802、 存储部分808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。
下面将以次用户作为认知无线电设备的示例给出关于本公开的应用示例。
第一应用示例
下面将参照图9A和图9B描述根据本公开的实施例的第一应用示例。
在广播电视频段，为了实现对电视空白空间(TV white space)频谱的高效利用，根据上述的一些实施例，首先，作为认知无线电设备的目标次用户进行所在环境的频谱感知，例如，本例中的认知无线电设备是通常利用20MHz带宽的WiFi设备，该认知无线电设备按照其带宽需求感知一段20MHz频谱，如图9A所示。认知无线电设备检测到其中仅有8MHz的空闲频谱，并将感知结果报告至本公开的频谱管理装置，频谱管理装置为了实现20MHz的802.11a WiFi信号传输内容在8MHz空闲电视频谱中传输，确定利用多速率信号处理进行频谱压缩(压缩到8MHz带宽内)。
频谱压缩的基本过程为首先对基带数字信号样点进行3倍内插，然后进行低通滤波(可通过FIR数字滤波实现)，最终获得符合要求的压缩后频谱。本公开的频谱管理装置为认知无线电设备选择滤波器参数(例如滤波器类型、阶数等)并作出频谱压缩指示，从而认知无线电设备可以经过简单运算而实现频谱压缩。具体的频谱压缩过程与现有技术中相同，本公开不对此进行详细讨论。图9B示出了压缩后的WiFi信号在8MHz的空闲电视频谱中进行传输的示意图。
通过应用本公开的资源管理方法，可实现例如以下有利效果：(1)对于受限的可用频谱带宽，压缩了认知无线电设备的发射信号频谱，显著提高了频谱利用率，并且，不需要更改认知无线电设备的硬件就可以支持不同的发射频谱带宽，在本示例中，将认知无线电设备的射频带宽由20MHz压缩到8MHz以内，从而能够将宽带信号在较窄的电视频道上传输；以及(2)根据具体的场景与管制要求(如频谱政策等)，通过动态选取合适的滤波器类型与滤波器参数(如滤波器的阶数与相应的滤波器参数)，有效抑制了发射信号的邻频泄漏，避免对工作在相邻频道上的主用户(或其它高优先级的次用户)产生有害干扰。
第二应用示例
以下参照图10至图12描述根据本公开的第二应用示例。在该第二应用示例中，以FBMC为例，描述了基于多载波技术的连续或非连续频谱的频谱共享。应理解，该示例同样适用于OFDM等其它多载波技术。
如上所述，与例如OFDM的其它多载波技术相比，基于FBMC的频谱共享具有更低的带外辐射，因此FBMC多载波信号具有更低的邻频泄漏(比OFDM多载波信号的邻频泄漏至少要低30dB)，因而具有更高的频谱利用率和频谱接入灵活性，也支持非连续频谱接入，同时满足苛刻的干扰抑制要求。图10A和图10B分别示出了基于FBMC的连续频谱接入与频谱共享以及基于FBMC的非连续频谱接入与频谱共享的示意图。可以看出，根据本技术，由于可以更灵活地利用空闲的频谱资源(包括连续的和非连续的空闲频谱资源)，从而与现有技术相比，能够大大提高频谱利用率。
下面将参照图11描述根据本公开的第二应用示例的基于FBMC的频谱管理算法的过程示例。图11是示出根据本公开的第二应用示例的基于FBMC的频谱管理算法的过程示例的流程图。
如图11所示，在步骤S1102中，由根据本公开的实施例的资源管理装置获取作为认知无线电设备的目标次用户的频谱感知结果以及设备信息(例如，诸如反映认知无线电设备非线性性能的参数IIP3的设备状况等信息)以及业务类型、QoS、能耗要求等多种信息。
然后，在步骤S1104中，资源管理装置根据主用户和其它用户(例如高优先级次用户)目前占用的频段、这些用户对干扰抑制的要求以及目标次用户的设备信息(如最大发射功率，输入三阶交调功率等)，计算出可用频段(即，子载波)的起止点频率。
接下来，在步骤S1106中，资源管理装置根据计算出的可用频段(子载波)的起止点频率计算出子载波编号。
在步骤S1108中，资源管理装置根据计算出的子载波编号得到可用子载波的编号范围。
然后，在步骤S1110中，资源管理装置根据得到的可用子载波的编号范围，结合目标次用户所处环境的频谱管理规则以及对三阶交调产物的预测，选择适用的子载波进行频谱共享。
接下来，在步骤S1112中，目标次用户在所选择的子载波对应的频段上进行通信，并在下一个发射周期来到之前返回到步骤S1102，根据情况 而适当地重新调整目标次用户的发射波形。
可以看出，在本示例中，资源管理装置在选择适合于目标次用户的子载波的编号及发射功率时，需要考虑例如以下因素：
(1)目标次用户所处的无线环境频谱感知结果，如主用户或高优先级次用户的类型及其频谱使用情况。对于需要对主系统进行保护的频段，可以利用对主系统的保护要求来计算；对于所确定的目标次用户可用的频段，可以通过感知来发现/分析来自主用户(或高优先级次用户)的干扰信号，进而利用目标次用户的感知(反馈)信息进行分析计算以选取合适的工作参数(如适合于目标次用户的发射频谱参数等)并进行必要的调整，以切实保护或提升次系统的通信性能；
(2)目标次用户需要服从的(由所在地区频谱管理机构制定的)干扰抑制要求，即有关无线电频谱管理规定；
(3)目标次用户的业务类型与QoS要求；
(4)目标次用户的设备信息与实际性能(尤其是三阶交调产物的预测)，如认知无线电设备的最大发射功率、输入三阶交调点功率、工作频率范围、处理器能力、剩余电量等。
应理解，上述需要考虑的因素仅是示例而非限制，在实际确定可用于目标次用户的频谱资源时，可仅考虑其中的一部分因素，或者还可考虑除此之外的其它因素。
结合上述需要考虑的因素，作为一个具体示例，将参照图12描述如何选择可用于目标次用户的子载波。图12是示出根据本公开的实施例的选择适合于目标次用户的子载波的过程示例的流程图。
如图12所示，在步骤S1202中，资源管理装置获取目标次用户所处的无线环境频谱感知结果，包括候选频段上对主用户或者其它次用户的频谱感知结果。
接下来，在步骤S1204中，根据感知结果和目标次用户需要服从的(由所在地区频谱管理机构制定的)干扰抑制要求(即有关无线电频谱管理规定)来确定可用的子载波范围及编号。
然后，在步骤S1206中，根据目标次用户的业务需求与QoS要求，结合目标次用户的设备信息与实际性能进一步选择适用的发射子载波及 发射功率。此外，如果考虑到目标次用户的非线性特性的影响，则还需要对选取的子载波产生的三阶交调产物进行预测，若存在超过干扰门限的三阶交调产物，则需要改用其它的子载波或需要降低子载波的发射功率。
应理解，尽管以上具体描述了本公开的两个应用示例，但是这仅是示例而非限制，并且本领域技术人员可以根据本公开的原理而将本技术应用于其它任何需要实现灵活且高效的频谱共享的场景中，并根据具体的应用场景而对上述实施例进行相应的调整，这些变型例自然认为应落入本公开的范围内。
以上参照附图描述了本公开的优选实施例，但是本公开当然不限于以上示例。本领域技术人员可在所附权利要求的范围内得到各种变更和修改，并且应理解这些变更和修改自然将落入本公开的技术范围内。
例如，在以上实施例中包括在一个单元中的多个功能可以由分开的装置来实现。替选地，在以上实施例中由多个单元实现的多个功能可分别由分开的装置来实现。另外，以上功能之一可由多个单元来实现。无需说，这样的配置包括在本公开的技术范围内。
在该说明书中，流程图中所描述的步骤不仅包括以所述顺序按时间序列执行的处理，而且包括并行地或单独地而不是必须按时间序列执行的处理。此外，甚至在按时间序列处理的步骤中，无需说，也可以适当地改变该顺序。

Claims (24)

  1. 一种通信系统中的资源管理装置，所述资源管理装置用于管理所述通信系统中的次系统对主系统的频谱资源的机会性利用，所述资源管理装置包括：
    接收单元，被配置成接收所述次系统中的一个或多个次系统设备当中的目标次系统设备的设备信息及资源请求；
    可用资源获取单元，被配置成响应于所述资源请求，基于所述目标次系统设备的设备信息而获取所述目标次系统设备可用的资源信息，其中，所述资源信息包括与用于所述目标次系统设备的发射波形有关的指示信息；以及
    通知单元，被配置成将所获取的资源信息通知给所述目标次系统设备。
  2. 根据权利要求1所述的资源管理装置，其中，所述设备信息包括与所述目标次系统设备支持的发射波形有关的参数。
  3. 根据权利要求1或2所述的资源管理装置，其中，所述设备信息包括与所述目标次系统设备的非线性特性有关的参数，
    并且其中，所述可用资源获取单元还基于与所述目标次系统设备的非线性特性有关的参数而获取与用于所述目标次系统设备的发射波形有关的指示信息。
  4. 根据权利要求1至3任一项所述的资源管理装置，其中，与用于所述目标次系统设备的发射波形有关的指示信息包括发射波形的类型。
  5. 根据权利要求4所述的资源管理装置，其中，在所述发射波形的类型属于多载波的情况下，与用于所述目标次系统设备的发射波形有关的指示信息还包括子载波频谱段数、子载波序号和子载波的发射功率中的至少一种。
  6. 根据权利要求5所述的资源管理装置，其中，属于多载波的发射波形类型包括正交频分复用OFDM和基于滤波器组的多载波FBMC中的至少一种。
  7. 根据权利要求1至6中任一项所述的资源管理装置，其中，与用于所述目标次系统设备的发射波形有关的指示信息包括与要采用的滤波 器有关的参数。
  8. 根据权利要求1至7中任一项所述的资源管理装置，其中，所述接收单元还接收来自所述目标次系统设备的对所述通信系统的无线环境的感知信息，
    并且其中，所述可用资源获取单元还基于所述感知信息获取所述资源信息。
  9. 根据权利要求8所述的资源管理装置，其中，在所述目标次系统设备支持的发射波形的类型属于多载波的情况下，所述感知信息包括与各个子载波对应频率上的干扰有关的信息。
  10. 根据权利要求8或9所述的资源管理装置，其中，所述感知信息包括与感知目标频谱资源的占用情况有关的信息。
  11. 根据权利要求8至10中任一项所述的资源管理装置，其中，所述感知信息包括与占用感知目标频谱资源的通信设备的类型有关的信息。
  12. 一种通信系统中的装置，所述装置位于所述通信系统中的次系统的一个或多个次系统设备当中的目标次系统设备侧，所述装置包括：
    发送单元，被配置成将所述目标次系统设备的设备信息和资源请求发送给资源管理装置，其中，所述资源管理装置用于管理所述通信系统中的所述次系统对主系统的频谱资源的机会性利用；
    接收单元，被配置成接收所述资源管理装置响应于所述资源请求、基于所述目标次系统设备的设备信息而获取的所述目标次系统设备可用的资源信息，其中，所述资源信息包括与用于所述目标次系统设备的发射波形有关的指示信息；以及
    控制单元，被配置成根据所接收的资源信息而控制所述目标次系统设备工作。
  13. 根据权利要求12所述的装置，其中，所述设备信息包括与所述目标次系统设备支持的发射波形有关的参数。
  14. 根据权利要求12或13所述的装置，其中，所述设备信息包括与所述目标次系统设备的非线性特性有关的参数，
    并且其中，与用于所述目标次系统设备的发射波形有关的指示信息是所述资源管理装置还基于与所述目标次系统设备的非线性特性有关的参数而获取的。
  15. 根据权利要求12至14中任一项所述的装置，其中，与用于所述目标次系统设备的发射波形有关的指示信息包括发射波形的类型。
  16. 根据权利要求15所述的装置，其中，在所述发射波形的类型属于多载波的情况下，与用于所述目标次系统设备的发射波形有关的指示信息还包括子载波频谱段数、子载波序号和子载波的发射功率中的至少一种。
  17. 根据权利要求16所述的装置，其中，属于多载波的发射波形类型包括正交频分复用OFDM和基于滤波器组的多载波FBMC中的至少一种。
  18. 根据权利要求12至17中任一项所述的装置，其中，与用于所述目标次系统设备的发射波形有关的指示信息包括与要采用的滤波器有关的参数。
  19. 根据权利要求12至18中任一项所述的装置，其中，所述发送单元还将对所述通信系统的无线环境的感知信息发送给所述资源管理装置，
    并且其中，所述资源信息是所述资源管理装置还基于所述感知信息而获取的。
  20. 根据权利要求19所述的装置，其中，在所述目标次系统设备支持的发射波形的类型属于多载波的情况下，所述感知信息包括与各个子载波对应频率上的干扰有关的信息。
  21. 根据权利要求19或20所述的装置，其中，所述感知信息包括与感知目标频谱资源的占用情况有关的信息。
  22. 根据权利要求19至21中任一项所述的装置，其中，所述感知信息包括与占用感知目标频谱资源的通信设备的类型有关的信息。
  23. 一种通信系统中的资源管理方法，所述资源管理方法用于管理所述通信系统中的次系统对主系统的频谱资源的机会性利用，所述资源管理方法包括：
    接收步骤，用于接收所述次系统中的一个或多个次系统设备当中的目标次系统设备的设备信息及资源请求；
    可用资源获取步骤，用于响应于所述资源请求，基于所述目标次系统设备的设备信息而获取所述目标次系统设备可用的资源信息，其中，所述资源信息包括与用于所述目标次系统设备的发射波形有关的指示信息；以 及
    通知步骤，用于将所获取的资源信息通知给所述目标次系统设备。
  24. 一种通信系统中的方法，所述方法在所述通信系统中的次系统的一个或多个次系统设备当中的目标次系统设备侧执行，所述方法包括：
    发送步骤，用于将所述目标次系统设备的设备信息和资源请求发送给资源管理装置，其中，所述资源管理装置用于管理所述通信系统中的所述次系统对主系统的频谱资源的机会性利用；
    接收步骤，用于接收所述资源管理装置响应于所述资源请求、基于所述目标次系统设备的设备信息而获取的所述目标次系统设备可用的资源信息，其中，所述资源信息包括与用于所述目标次系统设备的发射波形有关的指示信息；以及
    控制步骤，用于根据所接收的资源信息而控制所述目标次系统设备工作。
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