WO2011147155A1 - 基于无线资源分配数据库的切换方法及系统 - Google Patents

基于无线资源分配数据库的切换方法及系统 Download PDF

Info

Publication number
WO2011147155A1
WO2011147155A1 PCT/CN2010/078038 CN2010078038W WO2011147155A1 WO 2011147155 A1 WO2011147155 A1 WO 2011147155A1 CN 2010078038 W CN2010078038 W CN 2010078038W WO 2011147155 A1 WO2011147155 A1 WO 2011147155A1
Authority
WO
WIPO (PCT)
Prior art keywords
user equipment
rat
information
base station
spectrum
Prior art date
Application number
PCT/CN2010/078038
Other languages
English (en)
French (fr)
Inventor
魏民
赵楠
李峰
彭爱华
郭森宝
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US13/581,621 priority Critical patent/US8862130B2/en
Priority to BR112012026151A priority patent/BR112012026151A2/pt
Priority to JP2013511509A priority patent/JP5580930B2/ja
Priority to EP10852024.8A priority patent/EP2530970B1/en
Publication of WO2011147155A1 publication Critical patent/WO2011147155A1/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0007—Control or signalling for completing the hand-off for multicast or broadcast services, e.g. MBMS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0009—Control or signalling for completing the hand-off for a plurality of users or terminals, e.g. group communication or moving wireless networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H04W36/0033—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information
    • H04W36/0044—Control or signalling for completing the hand-off for data sessions of end-to-end connection with transfer of context information of quality context information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00837—Determination of triggering parameters for hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H04W36/0088—Scheduling hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H04W36/0094—Definition of hand-off measurement parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/34—Reselection control
    • H04W36/36—Reselection control by user or terminal equipment
    • H04W36/365—Reselection control by user or terminal equipment by manual user interaction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00838—Resource reservation for handover
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/249—Reselection being triggered by specific parameters according to timing information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to handover techniques in a wireless communication system, and more particularly to a handover method and system based on a wireless resource allocation database. Background technique
  • the current wireless communication is not limited to voice communication, and the wider data service communication is the reverse of the development of wireless communication systems, such as video. , business or business data, etc.
  • the current spectrum allocation system is generally a fixed allocation, that is, those authorized users are allocated fixed spectrum resources, which further aggravates the strain of the spectrum resources.
  • authorized users do not always occupy the spectrum allocated to them, that is, in a certain time, space and frequency band, no matter which wireless access technology is used, there is always a part of the spectrum is idle. of. This makes it possible to effectively utilize these idle spectrum resources and provide paid services for unauthorized users, thereby improving the utilization of frequency words and reducing the pressure on frequency resources.
  • the cognitive radio (CR, Cognitive Radio) technology was developed in this context.
  • the method of dynamic spectrum allocation (DSA, Dynamic Spectrum Allocation) and switching (HO, Handover) 0
  • DSA Dynamic Spectrum Allocation
  • HO Handover
  • the main purpose of the present invention is to provide a handover method and system based on a radio resource allocation database, which can select the most appropriate radio resource and corresponding RAT for the user equipment when receiving the handover request, and the handover completion speed is higher. fast.
  • the base station After receiving the handover request of the user equipment, the base station determines, in the database, the RAT and the corresponding carrier frequency resource that are suitable for the current communication condition of the user equipment according to the handover reason in the handover request, and determines the determined carrier frequency resource.
  • the RAT information and the corresponding carrier frequency resource information are notified to the user equipment, and the user equipment performs service quality verification on the RAT notified by the base station and the corresponding carrier frequency resource, which is better than the current communication quality of service.
  • the RAT notified by the base station is switched to the corresponding carrier frequency.
  • the database includes at least user equipment information, spectrum information, spectrum idle time information, a base station to which the spectrum belongs, and a spectrum-related communication policy.
  • the user equipment information includes service level information of the user equipment, and a RAT supported by the user equipment.
  • Information: the spectrum information includes available spectrum resources of the base station and available spectrum resources of the neighboring base station; the spectrum related communication strategy includes a communication tariff requirement;
  • the base station dynamically maintains the radio resource allocation database as:
  • the spectrum contains but is not limited to unused carrier frequencies, corresponding RATs and quality of service.
  • the spectrum is ranked by quality of service.
  • the corresponding RAT refers to the RAT that may be used on this carrier frequency.
  • the quality of service is that each user who is communicating measures the spectrum at a certain time interval, and reports to the base station (BS, Base Station) periodically through the uplink control channel. The BS judges the quality of the service, and if it meets the communication requirements, it is feasible.
  • the idle time is ranked according to the length of time that the spectrum is not occupied.
  • the ranking of each grade is performed first and then low.
  • the relevant policy specifies the base station and spectrum usage policy, including tariff information.
  • the process of dynamic allocation and switching is the process of dynamically searching the database.
  • the priority of the search database process is ranked by the user first and then the primary user, the idle time, and the frequency.
  • the maintenance period of the database is the broadcast period of the existing system, or triggered by events.
  • the maintenance process of the database is the process of re-queuing according to the priority according to the interaction information.
  • the result of the queue is that the higher the priority, the higher the queue.
  • the highest priority information is placed in the top row of the queue.
  • the contents of the database are numbered, 1-user, 2-frequency, 3-idle time, 4-owned base station, 5-related policy.
  • the content under each number may have sub-contents, and the corresponding sub-numbers.
  • the spectrum, whose sub-numbers are: 21-unused frequency, 22-unused frequency band (bandwidth), 23-corresponding RAT, 24-quality of service.
  • the content numbering of other databases is similar.
  • the user equipment in the communication state reports the QoS parameter of the current service to the base station by using the set uplink channel, the base station updates the current spectrum resource information, and selects the appropriate spectrum according to the QoS parameter reported by the user equipment.
  • the method further includes:
  • the base station receives and stores information describing the attributes of the user equipment after being powered on.
  • the method further includes:
  • the communication software of the determined RAT is sent to the user equipment when notifying the user equipment of the selected RAT.
  • the user equipment pre-stores each RAT communication software; the method further includes: when the base station determines that the user equipment includes the selected RAT, the base station notifies the user equipment of the determined RAT by using the determined identifier information of the RAT. When sent to the user equipment.
  • a switching system based on a radio resource allocation database comprising a user equipment and a base station, the system further comprising a configuration and maintenance unit, a determining unit, a notification unit and a switching unit; wherein, the constructing and maintaining unit is configured for each user equipment Construct and dynamically maintain a wireless resource allocation database;
  • a determining unit configured to determine, in the database, a RAT suitable for the current communication condition of the user equipment and a corresponding carrier frequency resource in the database according to the handover cause in the handover request, according to the handover cause in the handover request ;
  • a notification unit configured to notify the user equipment of the determined RAT information and corresponding carrier frequency resource information
  • a switching unit configured to perform quality of service verification on the RAT notified by the notification unit and the corresponding carrier frequency resource, and is better than the RAT notified by the base station to switch to the corresponding carrier frequency when the quality of service of the current communication is better.
  • the database includes at least user equipment information, spectrum information, spectrum idle time information, a base station to which the spectrum belongs, and a spectrum-related communication policy.
  • the user equipment information includes service level information of the user equipment, and a RAT supported by the user equipment.
  • Information: the spectrum information includes available spectrum resources of the base station and available spectrum resources of the neighboring base station; the spectrum related communication strategy includes a communication tariff requirement;
  • the configuration and maintenance unit further receives the current spectrum resource after the user equipment in the communication state reports the quality of service parameter of the current service to the base station by using the set uplink channel. And selecting, according to the quality of service parameter reported by the user equipment, a spectrum resource suitable for the quality of service parameter of the user equipment in the updated frequency spectrum, and sorting the selected spectrum resource according to an applicable priority.
  • the system further comprises:
  • the receiving unit is configured to receive and store information describing the attribute of the user device after being powered on.
  • the notification unit further sends the determined communication software of the RAT to the user equipment when notifying the user equipment of the selected RAT.
  • the user equipment pre-stores each RAT communication software; when the determining unit further determines that the user equipment does not include the determined RAT, the notification unit notifies the user equipment of the selected RAT identification information The RAT is sent to the user equipment.
  • the user equipment and the base station support CR technology
  • the user equipment reports the service quality parameter of the current service and the information describing the attribute of the user equipment to the base station by using the sensing wireless channel;
  • the notification unit notifies the user equipment of the determined RAT information and the corresponding carrier frequency resource information by using the sensing wireless channel, and sends the RAT communication software or the RAT identification information to the user equipment by using the sensing wireless channel.
  • the radio resource allocation database is first constructed, that is, according to the current available carrier frequency resource information and the corresponding RAT, after receiving the service quality of service parameter reported by the user equipment, the currently available radio resources are sorted for the request.
  • the user equipment determines the most applicable radio resource and the corresponding RAT, and notifies the corresponding resource information and the corresponding RAT to the user equipment, and after receiving the handover request of the user equipment, allocates the most advanced resource in the radio resource allocation database to the user equipment.
  • the user equipment is sufficient, and the user equipment performs service switching according to the notified RAT and resource information. In this way, since the maintenance of the wireless resource allocation database is performed in advance, it is received After the user equipment's handover request, the user equipment can complete the handover quickly and accurately, reducing the handover time and improving the user experience.
  • FIG. 1 is a flowchart of a handover method based on a radio resource allocation database according to the present invention
  • FIG. 2 is a schematic structural diagram of a handover system based on a radio resource allocation database according to the present invention
  • FIG. 3 is a schematic diagram of maintenance of a resource database according to the present invention.
  • the basic idea of the present invention is: first, constructing a radio resource allocation database, that is, sorting the currently available radio resources after receiving the service quality parameter reported by the user equipment according to the current available carrier frequency resource information and the corresponding RAT, Determining the most suitable radio resource and the corresponding RAT for the requesting user equipment, notifying the corresponding resource information and the corresponding RAT to the user equipment, and after receiving the handover request of the user equipment, assigning the top resource in the radio resource allocation database
  • the resource is allocated to the user equipment, and the user equipment performs service switching according to the notified RAT and resource information.
  • FIG. 1 is a flowchart of a method for switching a radio resource allocation database according to the present invention.
  • the method for switching a radio resource allocation database according to the present invention specifically includes the following steps: Step 101: Construct and dynamically maintain a radio resource allocation database,
  • the database includes at least user equipment information, spectrum information, spectrum idle time information, a base station to which the spectrum belongs, and a spectrum-related communication strategy;
  • Step 101 is the most basic and more critical step in implementing the technical solution of the present invention.
  • the present invention first maintains a radio resource allocation database on the base station side for determining, for the user equipment, the currently available radio resource and the RAT corresponding to the radio resource.
  • Radio resource allocation data in the present invention The library is a dynamic database, which is dynamically maintained based on the information reported by the user equipment. For a user equipment, the resource data maintained by the user will sort the available resources according to the service quality parameter reported by the user. The radio resource ranked in the first place and its corresponding RAT are allocated to the user.
  • the best resource information of the device after receiving the handover request of the user equipment, the base station allocates the radio resource ranked first in the data corresponding to the radio resource allocation database to the user equipment, and determines the user.
  • the RAT communication software corresponding to the radio resource information is also sent to the user equipment, and the user equipment installs the RAT communication software and performs handover by using the allocated corresponding radio resource.
  • the radio resource allocation database includes but is not limited to the following information, user, spectrum, idle time, affiliated base station (including carrier and network) information and related policies (including tariff requirements).
  • the user includes important users and general users, important users are ranked according to their importance, and general users are ranked according to the order in which they apply for access.
  • the spectrum includes unused frequency points, frequency bands (bandwidth), frequency points, and RATs and quality of service corresponding to the frequency bands. The spectrum is ranked according to the quality of service of the service.
  • the quality of service of the spectrum is granular to the subcarrier level; for other systems, for example, Wideband Code Division Multiple Access (WCDMA) System, spectrum service quality granularity to bandwidth level.
  • WCDMA Wideband Code Division Multiple Access
  • the quality of service is periodically reported by the user equipments that are communicating to the base station (BS, Base Station) through the uplink control channel of the equipment at a certain time interval.
  • the BS judges the quality of the service and judges the current available spectrum. For communication requirements, the available labels are applied, otherwise, no processing is done.
  • the corresponding RAT refers to the RAT that may be used on this carrier frequency.
  • the quality of service is that each user in communication measures the spectrum at a certain time interval, and reports to the base station (BS) periodically through the uplink control channel.
  • the BS judges the quality of the service, and if it meets the communication requirements, it is feasible.
  • the label otherwise, does not tag.
  • the idle time is ranked according to the length of time that the spectrum is not occupied. The ranking of each grade is performed first and then low.
  • the relevant policy specifies the base station and spectrum usage policy, including tariff information.
  • Dynamics of the invention is a process of dynamically searching the wireless resource allocation database.
  • the process of searching the wireless resource allocation database is performed in the order of user equipment, idle time, and spectrum information, and the specific search is performed in the order of priority, for example, the user equipment will be pressed.
  • the priority of the user equipment is used for resource allocation.
  • the maintenance period of the database is the broadcast period of the existing system, or triggered by events.
  • the maintenance process of the database is the process of re-queuing according to the priority according to the interaction information.
  • the result of the queue is that the higher the priority, the higher the queue.
  • the highest priority information is placed in the top row of the queue.
  • the contents of the database may also be numbered, for example, 1-user, 2-frequency, 3-idle time, 4-homed base station, 5-related policy.
  • the content under each number may have sub-contents, and the corresponding sub-numbers.
  • the spectrum has sub-numbers: 21-unused frequency, 22-unused band (bandwidth), 23-corresponding RAT, 24-quality of service.
  • the other database content is numbered in a similar way.
  • the maintenance period of the radio resource allocation database may be set to the broadcast period of the existing system, or may be triggered and maintained by the event, and the corresponding maintenance is performed after receiving the relevant parameters of the service quality of the user equipment.
  • the maintenance process of the wireless resource allocation database is a process of re-queuing according to the priority according to the interaction information. The result of the queuing is that the higher the priority, the higher the queuing.
  • the information with the highest priority is arranged in the front row of the queue.
  • T1 represents the period of resource database maintenance, which is the broadcast period of the current communication system. Since there may be inconsistencies in the broadcast periods of multiple communication systems, the base station of the current communication system continuously receives information from other base stations and users during the T1 period, and The database is maintained based on this information during the T2 period in the next T1 cycle.
  • T2 indicates the time when the resource database is maintained.
  • the information about the radio resource and the corresponding RAT that are most suitable for the user equipment is arranged in the forefront of the corresponding data in the radio resource allocation database, and when the base station determines the radio resource for the user equipment, the base station directly selects the corresponding user equipment.
  • Radio resource information at the forefront of the data Just fine.
  • the radio resource most suitable for the user equipment is a radio resource that can satisfy the service quality requirement of the user equipment and does not cause waste of radio resources.
  • a factor of communication tariff is also considered, that is, the communication tariff corresponding to the allocated wireless resource is lower than the communication tariff selected by the current service of the current user equipment.
  • the tariff factor is a relatively minor factor.
  • the user equipment (UE, User Equipment) is classified into a multi-mode (MR, Multi-Radio) user equipment, a cognitive radio (CR, Cognitive Radio) user equipment, and a single-mode user equipment.
  • MR multi-mode
  • CR Cognitive Radio
  • the MR user equipment is a user equipment supporting multiple RATs
  • the single mode user equipment is a user equipment supporting only one RAT.
  • Step 102 After receiving the handover request of the user equipment, the base station determines, in the database, the radio access technology RAT suitable for the current communication condition of the user equipment and the corresponding load in the database according to the handover reason in the handover request. a frequency resource, and notifying the determined RAT information and the corresponding carrier frequency resource information to the user equipment;
  • the base station After receiving the handover request of the user equipment, the base station performs related resource allocation according to the radio resource allocation database maintained by the user equipment.
  • the handover request of the user equipment may be due to a certain service requirement, for example, a video needs to be transmitted, and a service traffic requirement is changed; or the service quality is changed, for example, the current service quality is deteriorated, and the user requests a better service quality. Switch the request.
  • the base station extracts the optimal radio access information that meets the requirements from the radio resource allocation database, and transmits the information to the user through the cognitive pilot channel.
  • the use of the radio resource allocation database by the base station is divided into two phases.
  • the first stage is to sense the user's power-on phase.
  • the user accesses the communication system and describes its own attribute, that is, the single-mode user equipment. , multimode or CR user equipment.
  • the information provided on the channel contains the optimal radio access information extracted from the radio resource allocation database, that is, the top ranked radio access information.
  • the second phase is that the user equipment is in the normal communication phase, due to certain service requirements, such as the need to transmit Video, change in traffic demand; or due to changes in service quality, for example, current service quality is degraded, and users apply.
  • the base station extracts the optimal radio access information that meets the requirements from the database, and transmits the information to the user equipment through the cognitive pilot channel.
  • the base station may only transmit the number of the selected RAT (identification information, or other information);
  • the optimal radio access information transmitted by the base station may include The new RAT communication software;
  • the base station extracts corresponding parameters from the optimal wireless access information and transmits the corresponding parameters to the user, that is, only transmits the parameters required by the user to adjust performance.
  • determining the corresponding RAT according to the current radio resource is easy to implement, and it is easy for the base station to notify the user equipment of the related radio resource information and RAT information through the corresponding cognitive channel.
  • the base station determines the type of the user equipment according to the attribute information reported by the user equipment, the RAT identification information or the determined RAT communication software is notified to the user equipment, or when the user equipment is determined to be a single-mode user equipment, The configuration parameter information of the user equipment is notified to the single-mode user equipment.
  • the single-mode user equipment will be notified through a normal wireless channel.
  • Step 103 The user equipment performs quality of service verification on the RAT notified by the base station and the corresponding carrier frequency resource, and is better than the current communication quality of service, and uses the RAT notified by the base station to switch to the corresponding carrier frequency.
  • the user equipment activates the RAT according to the radio resource information determined by the base station and the corresponding RAT, and performs handover using the allocated radio resource to perform the current communication service.
  • the base station sends the RAT communication software to the CR user equipment, where the CR user equipment installs the RAT communication software and allocates according to the base station. Wireless resources are switched.
  • the base station allocates relevant handover parameters to the user equipment according to the handover request, and notifies the single-mode user equipment, where the single-mode user equipment is set. The corresponding switch is performed according to the relevant configuration parameters.
  • the user equipment may also compare the allocated radio resources and the RAT with the service quality of the current service, if not higher than the current service service. If the quality and the tariff are not favorable, then refuse to switch to the current wireless resources. If the allocated radio resources and RAT are comparable to the current communication service quality and the tariff is low, then handover can be performed. Specifically, the policy for determining the handover can be set according to the actual needs of the user.
  • the RAT in the present invention includes, but is not limited to, Global System for Mobile Communication (GSM) network technology, Universal Mobile Telecommunications System (UMTS) network technology, and Long Term Evolution (LTE) network. Technology, etc.
  • GSM Global System for Mobile Communication
  • UMTS Universal Mobile Telecommunications System
  • LTE Long Term Evolution
  • the handover system based on the radio resource allocation database of the present invention comprises a user equipment and a base station, and the connection and functions are the same as those of the existing communication system.
  • 2 is a schematic structural diagram of a switching system based on a wireless resource allocation database according to the present invention. As shown in FIG. 2, the system further includes a structure and maintenance unit 20, a determining unit 21, a notification unit 22, and a switching unit 23;
  • the configuration and maintenance unit 20 is configured to construct and dynamically maintain a radio resource allocation database for each user equipment, where the database includes at least user equipment information, spectrum information, spectrum idle time information, a base station to which the spectrum belongs, and a spectrum-related communication strategy;
  • a determining unit 21 configured to determine, in the database, a RAT suitable for the current communication condition of the user equipment and a corresponding carrier frequency in the database according to the handover reason in the handover request, after receiving the handover request of the user equipment Resource
  • the notification unit 22 is configured to notify the user equipment of the determined RAT information and corresponding carrier frequency resource information;
  • the switching unit 23 is configured to perform QoS verification on the RAT and the corresponding carrier frequency resource notified by the notification unit, and is better than the RAT notified by the base station, and switch to the corresponding carrier frequency by using the RAT notified by the base station. .
  • the user equipment information includes the service level information of the user equipment and the RAT information supported by the user equipment;
  • the frequency information includes the available spectrum resources of the base station and the available spectrum resources of the neighboring base station;
  • the frequency-related communication strategy includes Communication tariff requirements;
  • the configuration and maintenance unit further receives, after the user equipment in the communication state reports the quality of service parameter of the current service to the base station by using the set uplink channel, and updates the current spectrum resource information, according to the service quality parameter reported by the user equipment.
  • the spectrum resources suitable for the quality of service parameters of the user equipment are selected in the updated spectrum, and the selected spectrum resources are sorted according to applicable priorities.
  • T1 represents the period of resource database maintenance, which is the broadcast period of the current communication system. Since there may be inconsistencies in the broadcast periods of multiple communication systems, the base station of the current communication system continuously receives information from other base stations and users during the T1 period, and Database maintenance is performed during the T2 period in the next T1 cycle.
  • T2 indicates the time when the resource database is maintained.
  • the handover system based on the radio resource allocation database of the present invention further includes: a receiving unit 24, configured to receive and store information describing the attributes of the user equipment after being powered on.
  • the notification unit 22 further transmits the determined communication software of the RAT to the user equipment when notifying the user equipment of the selected RAT.
  • the user equipment pre-stores each RAT communication software; when the determining unit 21 further determines that the user equipment does not include the determined RAT, the notification unit 22 sends the determined identifier information of the RAT to the user equipment when the selected RAT is notified to the User equipment.
  • the user equipment and the base station support CR technology;
  • the user equipment reports the quality of service parameter of the current service and the information describing the attribute of the user equipment to the base station by using the sensing wireless channel;
  • the notification unit notifies the user equipment of the determined RAT information and the corresponding carrier frequency resource information through the sensing wireless channel, and transmits the RAT communication software or the RAT identification information to the user equipment by using the sensing wireless channel.
  • the handover system based on the radio resource allocation database shown in FIG. 2 is designed to implement the foregoing radio resource allocation database-based handover method, and each processing unit in the figure Implementation functions can be understood with reference to the related description of the foregoing methods.
  • the functions of the various processing units in the system shown in Figure 2 can be implemented by a program running on the processor or by a specific logic circuit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Mobile Radio Communication Systems (AREA)

Description

基于无线资源分配数据库的切换方法及系统 技术领域
本发明涉及无线通信系统中的切换技术， 尤其涉及一种基于无线资源 分配数据库的切换方法及系统。 背景技术
随着无线通信事业的不断发展， 越来越多的用户选择利用无线电进行 通信， 目前的无线通信并不限于语音通信， 更为广泛的数据业务通信更是 无线通信系统发展的反向， 例如视频， 业务或商业数据等。 随着无线通信 规模的日益扩大， 更凸显出无线频谱资源的紧缺。 而目前的频谱分配体制 一般是固定分配， 即为那些授权用户分配固定的频谱资源， 这更加加剧了 频谱资源的紧张的状况。 例如， 根据大量世界范围内实际的观测结果， 授 权用户并非始终占据着分配给其的频谱， 即在一定的时间、 空间和频段上， 无论使用何种无线接入技术， 总有一部分频谱是空闲的。 这就为有效利用 这些空闲的频谱资源， 为非授权用户提供有偿服务提供了可能， 从而提高 频语的利用率， 降低频语资源压力。 感知无线电 （CR, Cognitive Radio ) 技术就是在这个背景下发展起来的。
在目前感知无线电动态频谱分配技术中， 基于博弈论、 投标、 图论等 方法， 利用神经网络、 遗传算法、 拟退火法等优化算法， 达到最佳动态频 谱分配的目的。 这些方法的缺点是， 计算量大、 计算复杂， 消耗设备的资 源多， 不利于设备的快速响应； 另外， 目前， 世界上可用于无线通信的频 段有限， 所用无线接入技术（ RAT , Radio Access Technology )也是有限的， 通过上述算法得到的结论未必能实际使用， 可能要进行一定程度上的近似， 这在一定程度上抵消了算法的先进性。 另一类分配技术是通过搜索数据库 的方法进行动态频谱分配（ DSA, Dynamic Spectrum Allocation )和切换（ HO, Handover )0 该类方法的要点在于数据库的构造及搜索数据库的机制。 数据 库直接决定了 DSA和 HO的效果， 从而决定了整个通信系统的性能。
在无线通信网， 特别是异构无线通信网中， 感知网络如何利用数据库， 以最小的代价完成动态频谱分配和切换， 是迫切需要解决的问题。 发明内容
有鉴于此， 本发明的主要目的在于提供一种基于无线资源分配数据库 的切换方法及系统， 能在接收到切换请求时为用户设备选择最恰当的无线 资源及相应的 RAT, 切换完成的速度较快。
为达到上述目的， 本发明的技术方案是这样实现的：
一种基于无线资源分配数据库的切换方法， 构造并动态维护无线资源 分配数据库， 所述方法包括：
基站接收到用户设备的切换请求后， 根据所述切换请求中的切换原因 在所述数据库中为所述用户设备确定适合该用户设备当前通信条件的 RAT 以及对应的载频资源， 并将所确定的 RAT信息以及对应的载频资源信息通 知给所述用户设备， 所述用户设备对所述基站所通知的 RAT以及对应的载 频资源进行服务质量验证， 优于当前通信的服务质量时， 利用所述基站所 通知的 RAT切换到对应的载频上。
优选地， 所述数据库中至少包含用户设备信息、 频谱信息、 频谱空闲 时间信息、 频谱所属基站和频谱相关的通信策略； 所述用户设备信息包含 用户设备的服务等级信息、 用户设备所支持的 RAT信息； 所述频谱信息包 含所述基站的可用频谱资源以及邻基站的可用频谱资源； 所述频谱相关的 通信策略包含通信资费要求；
所述基站动态维护所述无线资源分配数据库为：
含有但不限于， 用户， 频谱， 空闲时间， 所属基站（含运营商及网络） 信息和相关政策（包括资费要求）。 其中， 用户包括重要用户和一般用户， 重要用户按其重要性排列等级， 一般用户按申请接入的先后顺序排列等级。 频谱含有但不限于未用载频， 相应 RAT和服务质量。 频谱按服务质量排列 等级。 相应 RAT指在该载频上可能使用的 RAT。 服务质量是正在通信的各 用户在一定的时间间隔下， 对频谱进行测量， 并通过上行控制信道定期向 基站（BS , Base Station )报告， BS判断该服务质量， 如果满足通信要求， 则打上可行的标签， 否则， 不打标签。 空闲时间按频谱未占用时间长短排 列等级。 各等级排列均按先高后低进行。 相关政策指定所属基站、 频谱的 使用政策， 包含资费信息。 动态分配和切换的过程就是动态搜索数据库的 过程， 搜索数据库过程的优先级按用户一一先主要用户再一般用户， 空闲 时间， 频语排列。
数据库的维护周期为现有系统的广播周期， 或由事件进行触发维护。 数据库的维护过程就是根据交互信息， 按优先级进行重新排队的过程。 排 队的结果是， 优先级越高， 排队越靠前。 优先级最高的信息排列在队列的 最前排。
数据库的内容进行编号， 1-用户， 2-频语， 3-空闲时间， 4-所属基站， 5-相关政策。 每个编号下的内容可能有子内容， 相应的有子编号。 例如， 频 谱， 其子编号为： 21-未用频点， 22-未用频段（带宽）， 23-相应 RAT, 24- 服务质量。 其它数据库的内容编号方式与此类似。
处于通信状态的用户设备利用设定的上行信道向基站上报当前业务的 服务质量参数， 所述基站更新当前的频谱资源信息， 根据所述用户设备上 报的服务质量参数在更新后的频谱中选择适于所述用户设备的服务质量参 数的频谱资源， 并对所选择的频谱资源按适用优先级进行排序。
优选地， 所述方法还包括：
所述基站接收并存储用户设备上电后所发送的描述自身属性的信息。 优选地， 所述方法还包括：
所述基站确定用户设备不包含所确定的 RAT时，将所确定的 RAT的通 信软件在向用户设备通知所选择的 RAT时发送给所述用户设备。
优选地， 所述用户设备预先存储各 RAT通信软件； 所述方法还包括： 所述基站确定用户设备包含所选择的 RAT时，将所确定的 RAT的标识 信息在向用户设备通知所确定的 RAT时发送给所述用户设备。
一种基于无线资源分配数据库的切换系统， 包括用户设备和基站， 所 述系统还包括构造及维护单元、 确定单元、 通知单元和切换单元； 其中， 构造及维护单元， 用于为每个用户设备构造并动态维护无线资源分配 数据库；
确定单元， 用于在接收到用户设备的切换请求后， 根据所述切换请求 中的切换原因在所述数据库中为所述用户设备确定适合该用户设备当前通 信条件的 RAT以及对应的载频资源；
通知单元， 用于将所确定的 RAT信息以及对应的载频资源信息通知给 所述用户设备；
切换单元， 用于对所述通知单元所通知的 RAT以及对应的载频资源进 行服务质量验证，优于当前通信的服务质量时，利用所述基站所通知的 RAT 切换到对应的载频上。
优选地， 所述数据库中至少包含用户设备信息、 频谱信息、 频谱空闲 时间信息、 频谱所属基站和频谱相关的通信策略； 所述用户设备信息包含 用户设备的服务等级信息、 用户设备所支持的 RAT信息； 所述频谱信息包 含所述基站的可用频谱资源以及邻基站的可用频谱资源； 所述频谱相关的 通信策略包含通信资费要求；
所述构造及维护单元进一步接收到处于通信状态的用户设备利用设定 的上行信道向基站上报当前业务的服务质量参数后， 更新当前的频谱资源 信息， 根据所述用户设备上报的服务质量参数在更新后的频谱中选择适于 所述用户设备的服务质量参数的频谱资源， 并对所选择的频谱资源按适用 优先级进行排序。
优选地， 所述系统还包括：
接收单元， 用于接收并存储用户设备上电后所发送的描述自身属性的 信息。
优选地， 所述确定单元进一步确定用户设备不包含所确定的 RAT时， 所述通知单元进一步将所确定的 RAT的通信软件在向用户设备通知所选择 的 RAT时发送给所述用户设备。
优选地， 所述用户设备预先存储各 RAT通信软件； 所述确定单元进一 步确定用户设备不包含所确定的 RAT时，所述通知单元将所确定的 RAT的 标识信息在向用户设备通知所选择的 RAT时发送给所述用户设备。
优选地， 所述用户设备及所述基站均支持 CR技术；
所述用户设备通过感知无线信道向基站上报当前业务的服务质量参数 以及描述所述用户设备属性的信息；
所述通知单元通过感知无线信道将所确定的 RAT信息以及对应的载频 资源信息通知给所述用户设备， 并通过感知无线信道向所述用户设备发送 RAT通信软件或 RAT标识信息。
本发明中， 首先构造无线资源分配数据库， 即根据当前的可用载频资 源信息及相应的 RAT, 在接收到用户设备上报的业务服务质量参数后， 对 当前可用的无线资源进行排序， 为该请求用户设备确定出最适用的无线资 源及相应的 RAT, 将相应的资源信息及对应的 RAT通知给用户设备， 接收 到用户设备的切换请求后， 将无线资源分配数据库中最靠前的资源分配给 用户设备即可， 用户设备将根据所通知的 RAT及资源信息进行业务切换。 这样， 由于事先对无线资源分配数据库进行了维护工作， 因此， 在接收到 用户设备的切换请求后， 能使用户设备快速、 准确地完成切换， 减少切换 时间， 提升了用户体验。 附图说明
图 1为本发明基于无线资源分配数据库的切换方法的流程图； 图 2为本发明基于无线资源分配数据库的切换系统的组成结构示意图； 图 3 为本发明资源数据库的维护示意图。 具体实施方式
本发明的基本思想是： 首先构造无线资源分配数据库， 即根据当前的 可用载频资源信息及相应的 RAT, 在接收到用户设备上报的业务服务质量 参数后， 对当前可用的无线资源进行排序， 为该请求用户设备确定出最适 用的无线资源及相应的 RAT, 将相应的资源信息及对应的 RAT通知给用户 设备， 接收到用户设备的切换请求后， 将无线资源分配数据库中最靠前的 资源分配给用户设备即可， 用户设备将根据所通知的 RAT及资源信息进行 业务切换。。
为使本发明的目的、 技术方案和优点更加清楚明白， 以下举实施例并 参照附图， 对本发明进一步详细说明。
图 1 为本发明基于无线资源分配数据库的切换方法的流程图， 如图 1 所示， 本发明基于无线资源分配数据库的切换方法具体包括以下步骤： 步骤 101 , 构造并动态维护无线资源分配数据库， 所述数据库中至少包 含用户设备信息、 频谱信息、 频谱空闲时间信息、 频谱所属基站和频谱相 关的通信策略；
步骤 101 是实现本发明技术方案的最基本也是较关键的步骤。 本发明 首先在基站侧维护一个无线资源分配数据库， 用于为用户设备确定当前可 用的无线资源及该无线资源所对应的 RAT。 本发明中的无线资源分配数据 库是动态数据库， 即会根据用户设备所上报的相关信息进行动态维护。 对 于某用户设备而言， 为其所维护的资源数据中， 将按用户上报的业务服务 质量参数将可用资源进行排序，其中，排在首位的无线资源及其对应的 RAT 即是要分配给用户设备的最佳资源信息， 基站在接收到用户设备的切换请 求后， 将该用户设备在无线资源分配数据库对应的数据中排在首位的无线 资源分配给该用户设备即可， 并且， 在确定用户设备不包含所分配的无线 资源信息时，还将该无线资源信息对应的 RAT通信软件发送给该用户设备， 用户设备安装该 RAT通信软件并利用所分配的相应无线资源进行切换。
本发明中， 无线资源分配数据库含有但不限于以下信息， 用户， 频谱， 空闲时间， 所属基站（含运营商及网络）信息和相关政策 (包括资费要求）。 其中， 用户包括重要用户和一般用户， 重要用户按其重要性排列等级， 一 般用户按申请接入的先后顺序排列等级。频谱包括未用频点、频段（带宽）、 频点及频带所对应的 RAT和服务质量等。频谱按业务的服务质量排列等级。 对于正交频分复用多址 ( OFDM A , Orthogonal Frequency Division Multiple Access )系统， 频谱的服务质量粒度到子载波级； 对于其它系统， 例如， 宽 度码分多址（ WCDMA, Wideband Code Division Multiple Access )系统， 频 谱的服务质量粒度到带宽级。 服务质量是由正在通信的各用户设备在一定 的时间间隔下通过设备的上行控制信道定期向基站（BS , Base Station )报 告， BS判断该服务质量， 对当前的可用频谱进行判断， 如果能满足通信要 求， 则打上可用的标签， 否则， 不作处理。 相应 RAT指在该载频上可能使 用的 RAT。 服务质量是正在通信的各用户在一定的时间间隔下， 对频谱进 行测量， 并通过上行控制信道定期向基站（Base Station, BS )报告， BS判 断该服务质量， 如果满足通信要求， 则打上可行的标签， 否则， 不打标签。 空闲时间按频谱未占用时间长短排列等级。 各等级排列均按先高后低进行。 相关政策指定所属基站、 频谱的使用政策， 包含资费信息。 本发明的动态 分配和切换就是动态搜索无线资源分配数据库的过程， 搜索无线资源分配 数据库过程按用户设备、 空闲时间、 频谱信息的顺序进行， 具体搜索时再 按各自的优先级顺序进行， 如对用户设备将按用户设备的优先级进行资源 分配。
数据库的维护周期为现有系统的广播周期， 或由事件进行触发维护。 数据库的维护过程就是根据交互信息， 按优先级进行重新排队的过程。 排 队的结果是， 优先级越高， 排队越靠前。 优先级最高的信息排列在队列的 最前排。
本发明中， 还可以对数据库的内容进行编号， 例如 1-用户， 2-频语， 3-空闲时间， 4-所属基站， 5-相关政策。 每个编号下的内容可能有子内容， 相应的有子编号。例如，频谱，其子编号为： 21-未用频点， 22-未用频段（带 宽）， 23-相应 RAT, 24-服务质量。 其它数据库内容的编号方式与此类似。
本发明中， 无线资源分配数据库的维护周期可以设置为现有系统的广 播周期， 或由事件进行触发维护， 如接收到用户设备的业务服务质量的相 关参数后即进行相应维护。 无线资源分配数据库的维护过程就是根据交互 信息， 按优先级进行重新排队的过程。 排队的结果是， 优先级越高， 排队 越靠前。 优先级最高的信息排列在队列的最前排。
图 3为资源数据库的维护示意图。 T1表示资源数据库维护的周期， 为 当前通信系统的广播周期， 由于可能存在多个通信系统的广播周期不一致， 因此， 当前通信系统的基站在 T1周期内持续接收来自其它基站和用户的信 息，并在下一个 T1周期中的 T2时间段内根据这些信息对数据库进行维护。 T2表示资源数据库维护的时间。
具体的， 对于用户设备而言， 将最适用于其的无线资源及对应 RAT的 信息排列在无线资源分配数据库中对应数据的前列， 基站在为用户设备确 定无线资源时， 直接选择该用户设备对应的数据的最前列的无线资源信息 即可。 本发明中， 最适用于用户设备的无线资源是恰能满足该用户设备的 业务服务质量要求， 不会造成无线资源浪费的无线资源。 或者， 除了上述 无线资源能否满足服务质量的条件外， 还考虑通信资费的因素， 即所分配 无线资源对应的通信资费低于当前用户设备当前业务所选用的通信资费。 这里， 资费因素是相对次要的因素。
本发明中， 按用户设备（UE, User Equipment )的性能进行区分为多模 ( MR, Multi-Radio )用户设备、 感知无线电 （ CR, Cognitive Radio )用户 设备和单模用户设备。 其中， MR用户设备为支持多种 RAT的用户设备， 单模用户设备为仅支持一种 RAT的用户设备。
步骤 102,基站接收到用户设备的切换请求后，根据所述切换请求中的 切换原因在所述数据库中为所述用户设备确定适合该用户设备当前通信条 件的无线接入技术 RAT以及对应的载频资源，并将所确定的 RAT信息以及 对应的载频资源信息通知给所述用户设备；
本步骤中， 基站接收到用户设备的切换请求后， 按为该用户设备所维 护的无线资源分配数据库进行相关的资源分配。 具体的， 用户设备的切换 请求可以是由于某种业务需求， 例如需要传输视频， 业务流量需求变更； 或是由于服务质量的变化， 例如当前的服务质量变差， 用户提出要求更佳 服务质量的切换请求。 根据用户请求， 基站从无线资源分配数据库中提取 出符合要求的最优无线接入信息， 通过感知导频信道传输给用户。
本发明中， 基站对无线资源分配数据库的使用分两个阶段。 第一阶段 是感知用户的加电阶段， 用户在加电时根据特殊信道上提供的信息 （可能 是感知导频信道）， 接入到通信系统中， 并描述本身属性， 即是单模用户设 备， 多模还是 CR用户设备。该信道上所提供的信息含有从无线资源分配数 据库中提取出来的最优无线接入信息， 即排列在最前面的无线接入信息。 第二阶段是用户设备在正常通信阶段， 由于某种业务需求， 例如需要传输 视频， 业务流量需求变更； 或是由于服务质量的变化， 例如， 当前的服务 质量变差， 用户提出申请。 根据用户的请求， 基站从数据库中提取出符合 要求的最优无线接入信息， 通过感知导频信道传输给用户设备。 当用户设 备为 MR用户设备时， 基站可以只传输所选择的 RAT的编号 （标识信息， 也可以是其他信息）； 当用户设备为 CR用户设备时， 基站传输的最优无线 接入信息可能包括新的 RAT通信软件； 当用户为单模用户时， 基站从最优 无线接入信息中提取出相应的参数传输给用户， 即只传输用户为调整性能 所需用到的参数。
本领域技术人员应当理解， 根据当前的无线资源确定其对应的 RAT是 容易实现的， 基站通过相应的感知信道将相关的无线资源信息及 RAT信息 通知用户设备是容易实现的。 当基站根据用户设备上报的属性信息确定用 户设备的类型后，将 RAT的标识信息或所确定的 RAT通信软件通知给用户 设备， 或者， 在确定用户设备为单模用户设备时， 将所设定的用户设备的 配置参数信息通知给该单模用户设备， 此时， 如果用户设备为单模用户设 备， 将通过普通的无线信道通知给该单模用户设备。
步骤 103 , 用户设备对所述基站所通知的 RAT以及对应的载频资源进 行服务质量验证，优于当前通信的服务质量时，利用所述基站所通知的 RAT 切换到对应的载频上。
本步骤中， 用户设备接收到基站侧的通知信息后， 根据基站所确定的 无线资源信息及相应的 RAT, 启用该 RAT并使用所分配的无线资源与基站 侧进行切换， 继续当前的通信业务。 当用户设备为 CR用户设备时， 在该 CR用户设备不包含基站所确定的 RAT时， 基站将该 RAT通信软件发送给 该 CR用户设备， 该 CR用户设备安装 RAT通信软件并根据基站所分配的 无线资源进行切换。 当用户设备为单模用户设备时， 基站将根据切换请求 为用户设备分配相关的切换参数， 并通知该单模用户设备， 该单模用户设 备根据相关的配置参数执行相应的切换。
本发明中， 当用户设备接收到基站发送的无线资源信息及相应的 RAT 后， 还可以根据所分配的无线资源及 RAT与当前的业务的服务质量进行比 对， 如果不高于当前的业务服务质量且资费也无优惠， 则拒绝切换到当前 的无线资源上。 如果所分配的无线资源及 RAT与当前的通信服务质量相当 且资费较低， 则可以进行切换。 具体的， 确定切换的策略可根据用户的实 际需求而设定。
本领域技术人员应当理解， 根据当前的无线资源及指定的 RAT进行切 换是容易实现的。
本发明中的 RAT包括但不限于全球移动通讯系统（ GSM, Global System for Mobile Communication )网络技术，通用移动通信系统（ UMTS , Universal Mobile Telecommunications System )网络技术以及长期演进 ( LTE, Long Term Evolution ) 网络技术等。
本发明基于无线资源分配数据库的切换系统包括用户设备和基站， 具 体与现有的通信系统的连接及功用均相同。 图 2 为本发明基于无线资源分 配数据库的切换系统的组成结构示意图， 如图 2 所示， 所述系统还包括构 造及维护单元 20、 确定单元 21、 通知单元 22和切换单元 23 ; 其中，
构造及维护单元 20, 用于为每个用户设备构造并动态维护无线资源分 配数据库， 所述数据库中至少包含用户设备信息、 频谱信息、 频谱空闲时 间信息、 频谱所属基站和频谱相关的通信策略；
确定单元 21 , 用于在接收到用户设备的切换请求后， 根据所述切换请 求中的切换原因在所述数据库中为所述用户设备确定适合该用户设备当前 通信条件的 RAT以及对应的载频资源；
通知单元 22,用于将所确定的 RAT信息以及对应的载频资源信息通知 给所述用户设备； 切换单元 23 ,用于对所述通知单元所通知的 RAT以及对应的载频资源 进行服务质量验证， 优于当前通信的服务质量时， 利用所述基站所通知的 RAT切换到对应的载频上。
上述用户设备信息包含用户设备的服务等级信息、 用户设备所支持的 RAT信息； 所述频语信息包含所述基站的可用频谱资源以及邻基站的可用 频谱资源； 所述频语相关的通信策略包含通信资费要求；
所述构造及维护单元进一步接收到处于通信状态的用户设备利用设定 的上行信道向基站上报当前业务的服务质量参数后， 更新当前的频谱资源 信息， 根据所述用户设备上报的服务质量参数在更新后的频谱中选择适于 所述用户设备的服务质量参数的频谱资源， 并对所选择的频谱资源按适用 优先级进行排序。
如图 3所示， 显示的是本发明所涉及资源数据库的维护示意图。 T1表 示资源数据库维护的周期， 为当前通信系统的广播周期， 由于可能存在多 个通信系统的广播周期不一致， 因此， 当前通信系统的基站在 T1周期内持 续接收来自其它基站和用户的信息， 并在下一个 T1周期中的 T2时间段内 进行数据库的维护。 T2表示资源数据库维护的时间。
如图 2所示， 本发明基于无线资源分配数据库的切换系统还包括： 接 收单元 24 ,用于接收并存储用户设备上电后所发送的描述自身属性的信息。
上述确定单元 21进一步确定用户设备不包含所确定的 RAT时，通知单 元 22进一步将所确定的 RAT的通信软件在向用户设备通知所选择的 RAT 时发送给所述用户设备。
上述用户设备预先存储各 RAT通信软件；确定单元 21进一步确定用户 设备不包含所确定的 RAT时， 通知单元 22将所确定的 RAT的标识信息在 向用户设备通知所选择的 RAT时发送给所述用户设备。
上述用户设备及所述基站均支持 CR技术； 用户设备通过感知无线信道向基站上报当前业务的服务质量参数以及 描述所述用户设备属性的信息；
通知单元通过感知无线信道将所确定的 RAT信息以及对应的载频资源 信息通知给所述用户设备， 并通过感知无线信道向所述用户设备发送 RAT 通信软件或 RAT标识信息。
本领域技术人员应当理解， 本领域技术人员应当理解， 图 2所示基于 无线资源分配数据库的切换系统是为实现前述的基于无线资源分配数据库 的切换方法而设计的， 图中的各处理单元的实现功能可参照前述方法的相 关描述而理解。 图 2所示的系统中各处理单元的功能可通过运行于处理器 上的程序而实现， 也可通过具体的逻辑电路而实现。
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保 护范围。

Claims

权利要求书
1、 一种基于无线资源分配数据库的切换方法， 其特征在于， 构造并动 态维护无线资源分配数据库， 所述方法包括：
基站接收到用户设备的切换请求后， 根据所述切换请求中的切换原因 在所述数据库中为所述用户设备确定适合该用户设备当前通信条件的无线 接入技术 RAT以及对应的载频资源 ,并将所确定的 RAT信息以及对应的载 频资源信息通知给所述用户设备， 所述用户设备对所述基站所通知的 RAT 以及对应的载频资源进行服务质量验证， 优于当前通信的服务质量时， 所 述基站所通知的 RAT切换到对应的载频上。
2、 根据权利要求 1所述的方法， 其特征在于， 所述数据库中至少包含 用户设备信息、 频谱信息、 频谱空闲时间信息、 频谱所属基站和频谱相关 的通信策略； 所述用户设备信息包含用户设备的服务等级信息、 用户设备 所支持的 RAT信息； 所述频谱信息包含所述基站的可用频谱资源以及邻基 站的可用频谱资源； 所述频谱相关的通信策略包含通信资费要求。
3、 根据权利要求 2所述的方法， 其特征在于， 所述基站动态维护所述 无线资源分配数据库为：
处于通信状态的用户设备利用设定的上行信道向基站上报当前业务的 服务质量参数， 所述基站更新当前的频谱资源信息， 根据所述用户设备上 报的服务质量参数在更新后的频谱中选择适于所述用户设备的服务质量参 数的频谱资源， 并对所选择的频谱资源按适用优先级进行排序。
4、 根据权利要求 1所述的方法， 其特征在于， 所述方法还包括： 所述基站接收并存储用户设备上电后所发送的描述自身属性的信息。
5、 根据权利要求 4所述的方法， 其特征在于， 所述方法还包括： 所述基站确定用户设备不包含所确定的 RAT时，将所确定的 RAT的通 信软件在向用户设备通知所选择的 RAT时发送给所述用户设备。
6、 根据权利要求 4所述的方法， 其特征在于， 所述用户设备预先存储 各 RAT通信软件； 所述方法还包括：
所述基站确定用户设备不包含所选择的 RAT时，将所确定的 RAT的标 识信息在向用户设备通知所确定的 RAT时发送给所述用户设备。
7、 根据权利要求 5或 6所述的方法， 其特征在于， 所述用户设备及所 述基站均支持感知无线电 CR技术；
所述用户设备通过感知无线信道向基站上报当前业务的服务质量参数 以及描述所述用户设备属性的信息；
所述基站通过感知无线信道将所确定的 RAT信息以及对应的载频资源 信息通知给所述用户设备， 并通过感知无线信道向所述用户设备发送 RAT 通信软件或 RAT标识信息。
8、 一种基于无线资源分配数据库的切换系统， 包括用户设备和基站， 其特征在于， 所述系统还包括构造及维护单元、 确定单元、 通知单元和切 换单元； 其中，
构造及维护单元， 用于为每个用户设备构造并动态维护无线资源分配 数据库，
确定单元， 用于在接收到用户设备的切换请求后， 根据所述切换请求 中的切换原因在所述数据库中为所述用户设备确定适合该用户设备当前通 信条件的 RAT以及对应的载频资源；
通知单元， 用于将所确定的 RAT信息以及对应的载频资源信息通知给 所述用户设备；
切换单元， 用于对所述通知单元所通知的 RAT以及对应的载频资源进 行服务质量验证，优于当前通信的服务质量时，利用所述基站所通知的 RAT 切换到对应的载频上。
9、 根据权利要求 8所述的系统， 其特征在于， 所述数据库中至少包含 用户设备信息、 频谱信息、 频谱空闲时间信息、 频谱所属基站和频谱相关 的通信策略； 所述用户设备信息包含用户设备的服务等级信息、 用户设备 所支持的 RAT信息； 所述频谱信息包含所述基站的可用频谱资源以及邻基 站的可用频谱资源； 所述频谱相关的通信策略包含通信资费要求。
10、 根据权利要求 9所述的系统， 其特征在于， 所述构造及维护单元 进一步接收到处于通信状态的用户设备利用设定的上行信道向基站上报当 前业务的服务质量参数后， 更新当前的频谱资源信息， 根据所述用户设备 上报的服务质量参数在更新后的频谱中选择适于所述用户设备的服务质量 参数的频谱资源， 并对所选择的频谱资源按适用优先级进行排序。
11、 根据权利要求 8所述的系统， 其特征在于， 所述系统还包括： 接收单元， 用于接收并存储用户设备上电后所发送的描述自身属性的 信息。
12、 根据权利要求 11所述的系统， 其特征在于， 所述确定单元进一步 确定用户设备不包含所确定的 RAT 时， 所述通知单元进一步将所确定的 RAT的通信软件在向用户设备通知所选择的 RAT时发送给所述用户设备。
13、 根据权利要求 11所述的系统， 其特征在于， 所述用户设备预先存 储各 RAT 通信软件； 所述确定单元进一步确定用户设备不包含所确定的 RAT时， 所述通知单元将所确定的 RAT的标识信息在向用户设备通知所选 择的 RAT时发送给所述用户设备。
14、 根据权利要求 12或 13所述的系统， 其特征在于， 所述用户设备 及所述基站均支持 CR技术；
所述用户设备通过感知无线信道向基站上报当前业务的服务质量参数 以及描述所述用户设备属性的信息；
所述通知单元通过感知无线信道将所确定的 RAT信息以及对应的载频 资源信息通知给所述用户设备， 并通过感知无线信道向所述用户设备发送 RAT通信软件或 RAT标识信息。
PCT/CN2010/078038 2010-05-25 2010-10-22 基于无线资源分配数据库的切换方法及系统 WO2011147155A1 (zh)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US13/581,621 US8862130B2 (en) 2010-05-25 2010-10-22 Method and system for handover based on radio resource allocation database
BR112012026151A BR112012026151A2 (pt) 2010-05-25 2010-10-22 método para a transferência com base em um banco de dados de alocação de recursos de rádio e sistema para a transferência com base em um banco de dados de alocação de recursos de rádio
JP2013511509A JP5580930B2 (ja) 2010-05-25 2010-10-22 無線リソース割り当てデータベースに基づくハンドオーバ方法及びハンドオーバシステム
EP10852024.8A EP2530970B1 (en) 2010-05-25 2010-10-22 Method and system for handover based on radio resource allocation database

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010186613.0A CN102264110B (zh) 2010-05-25 2010-05-25 基于无线资源分配数据库的切换方法及系统
CN201010186613.0 2010-05-25

Publications (1)

Publication Number Publication Date
WO2011147155A1 true WO2011147155A1 (zh) 2011-12-01

Family

ID=45003244

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2010/078038 WO2011147155A1 (zh) 2010-05-25 2010-10-22 基于无线资源分配数据库的切换方法及系统

Country Status (6)

Country Link
US (1) US8862130B2 (zh)
EP (1) EP2530970B1 (zh)
JP (1) JP5580930B2 (zh)
CN (1) CN102264110B (zh)
BR (1) BR112012026151A2 (zh)
WO (1) WO2011147155A1 (zh)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103582056B (zh) * 2012-08-07 2017-05-10 华为技术有限公司 基于白频谱的小区切换方法、设备及系统
US9730098B2 (en) 2013-11-25 2017-08-08 At&T Mobility Ii Llc Knowledge discovery and data mining-assisted multi-radio access technology control
US9503942B1 (en) * 2013-12-20 2016-11-22 Sprint Spectrum L.P. Selection of air interface protocol based on spectral efficiency
CN104811943A (zh) * 2014-01-24 2015-07-29 中兴通讯股份有限公司 认知无线电系统频谱资源配置方法和装置
US10548129B2 (en) 2015-02-11 2020-01-28 Apple Inc. Device, system and method employing unified flexible 5G air interface
EP3397003B1 (en) * 2016-01-25 2020-07-01 Kyocera Corporation Communication method, wireless terminal and base station
JP6812631B2 (ja) 2016-11-11 2021-01-13 ホアウェイ・テクノロジーズ・カンパニー・リミテッド スペクトルリソース分配方法、及び完全スペクトル共有のための装置
WO2018094712A1 (zh) * 2016-11-26 2018-05-31 华为技术有限公司 无线接入网络配置方法、装置和系统
US10080175B1 (en) 2017-05-24 2018-09-18 T-Mobile Usa, Inc. Pre-steering traffic within a telecommunications network
CN114205249B (zh) * 2020-09-02 2023-07-18 中国联合网络通信集团有限公司 资源分配方法及终端设备
CN112367152A (zh) * 2020-10-29 2021-02-12 国网甘肃省电力公司信息通信公司 一种基于业务优先级的电力无线专网资源分配方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1810060A (zh) * 2003-06-30 2006-07-26 摩托罗拉公司 不同无线接入技术之间的通信频谱的动态分配
CN101262693A (zh) * 2007-03-09 2008-09-10 华为技术有限公司 在无线接入系统重选小区的方法、装置、终端和无线接入系统

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5175867A (en) * 1991-03-15 1992-12-29 Telefonaktiebolaget L M Ericsson Neighbor-assisted handoff in a cellular communications system
US5517674A (en) * 1993-08-09 1996-05-14 Telefonaktiebolaget Lm Ericsson Low capacity mobile assisted handoff in a cellular communications network
US6819927B1 (en) * 1996-10-18 2004-11-16 Matsushita Electric Industrial Co., Ltd. Communication method for use by a mobile station in a mobile communication system of CDMA
US6606496B1 (en) * 2000-08-25 2003-08-12 Lucent Technologies Inc. Reverse link other cell interference locator and handoff trigger for wireless network
WO2002032160A2 (en) 2000-10-09 2002-04-18 Nokia Corporation Service priorities in multi-cell network
JP2004349976A (ja) 2003-05-21 2004-12-09 Mitsubishi Electric Corp 無線通信システム、無線リソース管理装置および無線通信端末
KR20040110633A (ko) * 2003-06-20 2004-12-31 삼성전자주식회사 이동통신 시스템에 있어 핸드오버 수행 방법
EP1748666A1 (en) * 2005-07-27 2007-01-31 Alcatel Method of identifying a radio link
KR100685793B1 (ko) * 2005-09-14 2007-02-22 한국전자통신연구원 패킷 기반 통신 시스템에서의 호 수락 제어 방법
JP4612523B2 (ja) * 2005-10-13 2011-01-12 株式会社日立製作所 無線通信システム及び基地局
WO2008038367A1 (en) * 2006-09-28 2008-04-03 Fujitsu Limited Wireless communication apparatus
TW200826706A (en) * 2006-12-06 2008-06-16 Inst Information Industry Wireless network handover apparatus, method, application program, and computer readable medium for dynamic handover
WO2008096702A1 (ja) 2007-02-05 2008-08-14 Sharp Kabushiki Kaisha ネットワーク制御装置及びプログラム
US9648523B2 (en) * 2007-11-21 2017-05-09 Qualcomm Incorporated Target access point initiated communication handover
US8107950B2 (en) * 2008-01-25 2012-01-31 Telefonaktiebolaget Lm Ericsson (Publ) Inter-RAT/ frequency automatic neighbor relation list management
US20090290555A1 (en) * 2008-05-21 2009-11-26 Comsys Communication & Signal Processing Ltd. Autonomous anonymous association between a mobile station and multiple network elements in a wireless communication system
KR101659337B1 (ko) * 2008-07-01 2016-09-26 삼성전자주식회사 무선통신시스템의 핸드오버 장치 및 방법
US20100220687A1 (en) * 2009-02-10 2010-09-02 Interdigital Patent Holdings, Inc. Spectrum management across diverse radio access technologies
US8724545B2 (en) * 2010-03-31 2014-05-13 Qualcomm Incorporated Method and apparatus to facilitate support for multi-radio coexistence

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1810060A (zh) * 2003-06-30 2006-07-26 摩托罗拉公司 不同无线接入技术之间的通信频谱的动态分配
CN101262693A (zh) * 2007-03-09 2008-09-10 华为技术有限公司 在无线接入系统重选小区的方法、装置、终端和无线接入系统

Also Published As

Publication number Publication date
BR112012026151A2 (pt) 2017-10-17
CN102264110B (zh) 2015-08-12
EP2530970A4 (en) 2016-10-26
JP5580930B2 (ja) 2014-08-27
US8862130B2 (en) 2014-10-14
JP2013531928A (ja) 2013-08-08
CN102264110A (zh) 2011-11-30
EP2530970B1 (en) 2018-06-06
US20120322499A1 (en) 2012-12-20
EP2530970A1 (en) 2012-12-05

Similar Documents

Publication Publication Date Title
WO2011147155A1 (zh) 基于无线资源分配数据库的切换方法及系统
JP6414140B2 (ja) コンポーネントキャリアを更新する基地局、端末、方法、及びコンピュータ記憶媒体
US10499254B2 (en) Frequency spectrum coordination device and method, and device and method in wireless communication system
JP5454736B2 (ja) コンポーネントキャリアを選択する方法、基地局、端末及び通信システム
EP3852434A1 (en) Load balancing method and device
CN110391926A (zh) 网络切片应用控制方法及装置、通信设备及存储介质
JP2006229938A (ja) 分散型ネットワーク発見
WO2011110121A2 (zh) 管理电源的方法、终端设备、网络侧设备和通信系统
CN103916908A (zh) 一种用于服务小区负载均衡的方法与装置
CN106793000B (zh) 系统消息的更新方法、系统消息的获取方法及装置
CN102083056A (zh) 接入类型/频率选择优先级的索引参数的通知方法及设备
WO2020253228A1 (zh) 一种小区管理的方法和设备
Yu et al. Mobile data offloading for green wireless networks
CN103327630A (zh) 用于无线网络中的无线资源调度的方法和装置
CN103596288A (zh) 一种lte系统接入认知频谱的方法及系统
EP3549326B1 (en) Configuration control for network
KR102053766B1 (ko) 중첩된 무선네트워크 환경에서 모바일 데이터의 전송속도를 향상하기 위한 복수개 셀 선택 및 데이터 분산 전송 방법
WO2022001555A1 (zh) 无线资源管理方法、存储介质和电子设备
CN113938986B (zh) 一种确定无线接入策略的方法及装置
CN115967951A (zh) 一种优化网络容量的方法、装置及系统
US20150146621A1 (en) Terminal selection method and system based on self-organizing network, and network entity
WO2020151474A1 (zh) 调度终端确定方法、终端和网络侧设备
CN102143531A (zh) 载波聚合系统的载波管理方法、基站及系统
CN107528742B (zh) 一种面向云数据中心网络优化的虚拟机部署方法
CN113924798A (zh) 更新边界小区的记录

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10852024

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2010852024

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 13581621

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: 9008/CHENP/2012

Country of ref document: IN

ENP Entry into the national phase

Ref document number: 2013511509

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112012026151

Country of ref document: BR

REG Reference to national code

Ref country code: BR

Ref legal event code: B01E

Ref document number: 112012026151

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 112012026151

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20121011