WO2013082973A1 - 一种认知无线电***中的频谱切换方法和设备 - Google Patents

一种认知无线电***中的频谱切换方法和设备 Download PDF

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Publication number
WO2013082973A1
WO2013082973A1 PCT/CN2012/082365 CN2012082365W WO2013082973A1 WO 2013082973 A1 WO2013082973 A1 WO 2013082973A1 CN 2012082365 W CN2012082365 W CN 2012082365W WO 2013082973 A1 WO2013082973 A1 WO 2013082973A1
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WIPO (PCT)
Prior art keywords
network device
wireless network
cognitive radio
user equipment
device identifier
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PCT/CN2012/082365
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English (en)
French (fr)
Inventor
白文岭
高卓
蒋成钢
李媛媛
杨宇
Original Assignee
电信科学技术研究院
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Application filed by 电信科学技术研究院 filed Critical 电信科学技术研究院
Priority to EP12856138.8A priority Critical patent/EP2790431B1/en
Priority to US14/363,398 priority patent/US9439110B2/en
Publication of WO2013082973A1 publication Critical patent/WO2013082973A1/zh

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Classifications

    • 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
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0072—Transmission or use of information for re-establishing the radio link of resource information of target access point
    • 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
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • 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
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/60—Context-dependent security
    • H04W12/69—Identity-dependent
    • H04W12/72—Subscriber identity
    • 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
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/06—Reselecting a communication resource in the serving access point

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a spectrum switching method and apparatus in a cognitive radio system.
  • the prerequisite for the CR system to access the blank spectrum of the authorization system opportunistically is to protect the service of the authorization system from interference from the CR system. Based on this requirement: (1) The CR system needs to have the ability to accurately determine the blank spectrum of the authorized system; (2) The CR system needs to have the spectrum switching capability. That is, after the CR system discovers that the authorization system appears on the currently used white space spectrum, it needs to exit the currently used white space spectrum in time.
  • the spectrum switching process needs to ensure that the communication of the authorized system is not affected as much as possible.
  • it is necessary to quickly exit the currently used white space (source).
  • the working frequency point select a new spectrum (target working frequency point) to establish a cell.
  • the CR user needs to be quickly switched to the newly established cell to ensure the service continuity of the CR user.
  • Current spectrum switching methods include:
  • Method 1 The flowchart of the spectrum switching implementation shown in FIG. 1 , the base station of the CR system needs to perform handover to each UE in the cell after the authorized user appears on the current working frequency point (source working frequency point) (User Equipment).
  • the user equipment sends a UE-Specific spectrum switching command, and the UE receives the spectrum switching command and triggers the spectrum switching process. After that, the base station stops transmitting and receiving at the source working frequency point, and recovers the cell at the target working frequency point.
  • Method 2 The flowchart of the spectrum switching implementation shown in FIG. 2, the base station of the CR system notifies the UE system information update in the cell by paging, etc. after the authorized user appears on the current working frequency point (source working frequency point).
  • the paging information is read by the UE, and the system information update notification is obtained.
  • the base station of the CR system broadcasts updated system information (that is, system broadcast information including a cell-common spectrum switching command), and the spectrum switching is received by the UE. Command, and trigger the execution of the spectrum switching process; after that, the base station stops transmitting and receiving at the source working frequency point, and recovers the cell at the target working frequency point.
  • the mode 1 When the mode 1 is used, all the RRC (Radio Resource Control) connected UEs in the entire cell need to be switched to the target working frequency. In the RRC connected state, there are many UEs (such as 1200). If more than one UE-Specific spectrum switching command is sent to each UE that needs to perform handover in the cell, the spectrum switching command needs to be sent to a large number of UEs, resulting in a longer spectrum switching command transmission delay, and Long spectrum switching time.
  • RRC Radio Resource Control
  • the base station When the mode 2 is used, the base station first needs to notify the UE system information update in the cell by paging or the like, and then broadcasts the system including the cell common spectrum switching command. Broadcast information, resulting in longer spectrum switching command transmission delays and resulting in longer spectrum switching times.
  • the spectrum switching mode of the first mode and the second mode may result in a longer spectrum switching time, thereby failing to satisfy the interference protection of the CR system to the authorized system user, and failing to ensure the service continuity of the CR system user.
  • Embodiments of the present invention provide a spectrum switching method and device in a cognitive radio system to perform spectrum switching quickly.
  • an embodiment of the present invention provides a spectrum switching method in a cognitive radio system, including:
  • the base station device After the base station device finds that the user of the authorization system appears at the current working frequency, the base station device generates a spectrum switching command
  • the base station device sends the spectrum switching command by using a channel addressed by the cognitive radio dedicated wireless network device identifier, and triggers the user equipment in the cell to perform spectrum switching by using the spectrum switching command.
  • Embodiments of the present invention provide a spectrum switching method in a cognitive radio system, including:
  • the user equipment receives the spectrum switching command from the base station device by using a channel addressed by the cognitive radio dedicated wireless network device identifier;
  • the user equipment performs spectrum switching using the spectrum switching command.
  • An embodiment of the present invention provides a base station device, including:
  • a determining module configured to generate a spectrum switching command after the user of the authorized system is found at the current working frequency point
  • a sending module configured to send the spectrum switching command by using a channel addressed by a cognitive radio dedicated wireless network device identifier, triggering a user equipment in the cell to use the spectrum switching
  • the command performs spectrum switching.
  • An embodiment of the present invention provides a user equipment, including:
  • a receiving module configured to receive a spectrum switching command from the base station device by using a channel addressed by the cognitive radio dedicated wireless network device identifier
  • a switching module configured to perform spectrum switching by using the spectrum switching command.
  • the embodiment of the present invention has at least the following advantages:
  • the spectrum switching can be implemented quickly and accurately, the transmission delay of the spectrum switching command is reduced, and the interference to the authorized system user can be effectively avoided, thereby ensuring the service performance of the authorized system. And can guarantee
  • FIGS. 1 and 2 are schematic diagrams showing the implementation process of spectrum switching in the prior art
  • FIG. 3 is a schematic flowchart of a spectrum switching method in a cognitive radio system according to Embodiment 1 of the present invention
  • FIG. 4 is a schematic diagram of functional units of a base station device according to Embodiment 2 of the present invention
  • FIG. 5 is a schematic flowchart of a spectrum switching method in a cognitive radio system according to Embodiment 2 of the present invention
  • FIG. 6 is a schematic diagram of functional units of a UE according to Embodiment 3 of the present invention.
  • FIG. 7 is a schematic flowchart of a spectrum switching method in a cognitive radio system according to Embodiment 3 of the present invention.
  • FIG. 8 is a schematic structural diagram of a base station device according to Embodiment 4 of the present invention
  • FIG. 9 is a schematic structural diagram of a user equipment according to Embodiment 5 of the present invention.
  • Embodiment 1 of the present invention provides a spectrum switching method in a cognitive radio system, which may be applicable to at least LTE (Long Term Evolution, which adopts cognitive radio technology). Long Term Evolution), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), HSPA (High-Speed Packet Access), CDMA (Code Division Multiple Access) Multiple access) -2000, WCDMA (Wideband Code Division Multiple Access), GSM (global system for mobile communications) and other mobile communication systems.
  • LTE Long Term Evolution
  • TD-SCDMA Time Division-Synchronous Code Division Multiple Access
  • HSPA High-Speed Packet Access
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GSM global system for mobile communications
  • the spectrum switching method in the cognitive radio system includes the following steps:
  • Step 301 The base station device (the base station device is a base station device based on the CR system) and the UE in the cell (the UE is a CR system-based UE) stipulate a cognitive radio dedicated wireless network device identifier for transmitting a spectrum switching command.
  • the manner in which the base station device and the UE in the cell agree on the identity of the cognitive radio dedicated wireless network device includes, but is not limited to, one of the following methods:
  • Method 1 statically specifying the identification of the private radio network device of the cognitive radio through the protocol; specifically, at the base station device side and the UE side, a wireless network device identifier reserved by the cognitive radio system but not defined by the protocol may be statically specified by the protocol
  • the second method is to dynamically configure the cognitive radio dedicated wireless network device identifier by using the system information. Specifically, on the base station device side, the base station device selects one of the wireless network device identifiers that are not reserved and not allocated to the UE as the UE in the cell. Corresponding cognitive radio-dedicated wireless network device identifier, and broadcasts the cognitive radio-dedicated wireless network device identifier to the UE in the cell through the system information; on the UE side, the UE may receive the base station device to broadcast to the UE in the cell through the system information. Cognitive radio dedicated wireless network device identification.
  • Manner 3 dynamically configuring the cognitive radio dedicated wireless network device identifier by user-specific signaling; specifically, at the base station device side, the base station device is non-reserved and not allocated to the UE Select one of the wireless network device identifiers as the cognitive radio-dedicated wireless network device identifier corresponding to the UE in the cell, and send the cognitive radio-dedicated wireless network device identifier to the relevant UE in the cell through user-specific signaling; On the side, the UE may receive the cognitive radio dedicated wireless network device identifier sent by the base station device through user-specific signaling.
  • Step 302 After the user of the authorized system appears on the current working frequency point (ie, the source working frequency point is the currently used white space spectrum), the base station device determines that the spectrum switching process needs to be performed, and generates a spectrum switching command, where the spectrum switching command is generated. At least the target working frequency and radio resource configuration information are included.
  • Step 303 The base station device sends a spectrum switching command by using a channel addressed by the cognitive radio dedicated wireless network device identifier, to trigger the UE in the cell to perform spectrum switching by using the spectrum switching command.
  • the base station device may also determine the number of times the spectrum switching command is sent during the process of generating the spectrum switching command. In the process of transmitting the spectrum switching command, the base station device passes the cognitive radio dedicated wireless network device according to the number of times of sending. The channel addressed by the identified channel transmits a spectrum switching command; for example, when the number of transmissions is three, the base station device transmits three frequency spectrum switching commands through the channel addressed by the cognitive radio dedicated wireless network device identifier.
  • Step 304 The UE receives a spectrum switching command from the base station device by using a channel addressed by the cognitive radio dedicated wireless network device identifier.
  • the UE needs to detect whether the channel is addressed by the cognitive radio dedicated wireless network device identifier in each downlink subframe, and if yes, the UE receives the spectrum switching command from the base station device (that is, the UE detects the cognitive radio dedicated After the wireless network device identifies the addressed channel, the spectrum switching command is executed according to the information, and the spectrum switching process specified by the spectrum switching command is triggered, and the subsequent step 305); otherwise, the detecting process is continued.
  • the UE is a UE configured with an associated cognitive radio dedicated wireless network device identifier in the cell.
  • Step 305 The UE performs spectrum switching by using a spectrum switching command.
  • the UE can perform spectrum switching by using information such as a target working frequency point and a radio resource configuration carried in the spectrum switching command.
  • the base station device after the base station device sends the spectrum switching command through the channel addressed by the cognitive radio dedicated wireless network device identifier, the base station device also needs to stop data transmission and reception at the source working frequency point, and recover the cell by using the target working frequency point. This process can be performed after step 303, and details are not described herein again.
  • the channel addressed by the cognitive radio dedicated wireless network device identifier may be an existing channel or a new channel.
  • the defined channel, and the channel addressed by the cognitive radio dedicated wireless network device identifier includes but is not limited to: a physical layer control channel; or a physical layer control channel scheduled physical layer traffic channel.
  • the LTE system is taken as an example for further explanation.
  • the PDCCH Physical Downlink Control Channel
  • the PDCCH is used for downlink I/O (downlink control information), and includes information such as scheduling information and uplink power control for downlink and uplink data transmission.
  • the PDCCH adopts a multi-user shared resource, and the UE searches for control signaling in a certain rule in the entire control area by using a certain rule; the PDCCH DCI information is added by the RNTI (Radio Network Temporary Identifier)
  • RNTI Radio Network Temporary Identifier
  • a 16-bit CRC (Cyclic Redundancy Check) mode is used to implicitly identify the target UE of the DCI.
  • DCIs such as DCI 0, DCI 1, DCI 1A, DCI 1B, DCI 1C, DCI ID, DCI 2, DCI 2A, DCI 2B, DCI 3, and DCI 3A are defined in the LTE system. Format; and the RNTI includes a common RNTI and a dedicated RNTI; as shown in Table 1, SI-RNTI, ⁇ -RNTL ⁇ M-RNTI and RA-RNTI are cell common RNTIs for scheduling transmission systems and public information, addressable
  • the DCI format includes DCI 1A and DCI 1C, and the search space is located in the common search space; in addition, the LTE system reserves the RNTI of the FFF4-FFFC for later expansion of other applications.
  • C-RNTI Cell Radio Network Temporary Identity
  • C-RNTI Semi-Persistent Scheduling
  • C-RNTI Temporary (Temporary) C-RNTI
  • TPC Transmit Power Control
  • PUCCH Physical Uplink Control Channel
  • TPC-PUSCH Physical Uplink Shared Channel
  • the implementation form of the cognitive radio dedicated wireless network device identifier includes but is not limited to: CR-RNTI; and the base station device
  • the manner in which the UE agrees to transmit the CR-RNTI of the spectrum switching command includes but is not limited to:
  • the first method is to statically specify the CR-RNTI through the protocol. Specifically, a certain RNTI reserved but not defined by the LTE system may be designated as a CR-RNTI in the cell; for example, a reserved but undefined FFF4-FFFC may be used ( One of the tables (such as FFFC) as specified in Table 1 is designated as CR-RNTI.
  • the second method is to dynamically configure the CR-RNTI by using the system information. Specifically, the base station device of the LTE system selects one of the RNTIs that are not reserved and not allocated to the UE as the CR-RNTI, and broadcasts the CR-RNTI to the cell by using the system information. All UEs within the UE; the UE acquires the CR-RNTI in the own cell by receiving system broadcast information.
  • the third method is to dynamically configure the CR-RNTI by using the UE-specific signaling. Specifically, the base station device selects one of the RNTIs that are not reserved and not allocated to the UE as the CR-RNTI, and uses the UE-specific signaling (such as the RRC connection setup message). The RRC connection re-establishment message, the RRC reconfiguration message, etc.) notifies the CR-RNTI to the relevant UE in the cell.
  • the channel to which the cognitive radio dedicated radio network device identifier is addressed includes, but is not limited to: PDCCH, that is, one implementation manner of the channel addressed by the CR-RNTI is the PDCCH; further,
  • the base station device sends a spectrum switching command by using a channel addressed by the cognitive radio dedicated wireless network device identifier.
  • the base station device sends or schedules a spectrum switching command by using a CR-RNTI addressed PDCCH DCI, and the CR-RNTI addressed PDCCH DCI is located in the public. Search space.
  • the transmission spectrum switching command refers to the PDCCH DCI directly carrying the spectrum switching command.
  • the scheduling spectrum switching command refers to the PDCCH DCI indicating the time-frequency resource and transmission of the PDSCH (Physical Downlink Shared Channel) carrying the spectrum switching command. Information such as format.
  • the PDCCH DCI that can be used includes, but is not limited to, the PDCCH DCI of the scheduling system common information existing in the current LTE system, such as DCI 1A and DCI 1C, or the like, or specifically defined for the spectrum switching command scheduling transmission.
  • New PDCCH DCI format is not limited to, the PDCCH DCI of the scheduling system common information existing in the current LTE system, such as DCI 1A and DCI 1C, or the like, or specifically defined for the spectrum switching command scheduling transmission.
  • the cognitive radio dedicated wireless network device identifier when the user of the authorized system appears on the currently used white space spectrum, CR
  • the base station equipment of the system can be adopted
  • the cognitive radio-dedicated wireless network device identifies the addressed channel transmission spectrum switching command, triggers all UEs in the cell to perform spectrum switching; and the UE in the cell configured with the associated cognitive radio-dedicated wireless network device identifier detects in each downlink subframe. Whether the channel is addressed by the cognitive radio dedicated wireless network device identifier, and if so, receiving the spectrum switching command according to the relevant information, triggering the execution of the spectrum switching procedure.
  • a second embodiment of the present invention provides a spectrum switching method in a cognitive radio system, which is described in detail in the processing of a base station device of a CR system.
  • the functional unit of the base station device includes: a spectrum switching execution unit, a spectrum switching decision unit, a cognitive radio dedicated wireless network device identity management unit, and a sending unit.
  • the spectrum switching method in the cognitive radio system includes the following steps: Step 501, Cognition
  • the radio-dedicated wireless network device identity management unit determines whether the base station device has agreed with the UE in the cell for the cognitive radio-dedicated wireless network device identifier; if yes, step 504 is performed; if no, step 502 is performed.
  • Step 502 The cognitive radio-dedicated wireless network device identity management unit selects any one of the wireless network device identifiers from the cell non-reserved and unallocated to be designated as a cognitive radio-dedicated wireless network device identifier.
  • Step 503 The sending unit sends the selected cognitive radio dedicated wireless network device identifier to the relevant UE in the cell by using a system broadcast message or UE dedicated signaling.
  • Step 504 The spectrum switching decision unit determines whether the user of the 4 authorized system appears at the current working frequency point (ie, determines whether the spectrum switching process needs to be performed), and if yes, performs step 505; otherwise, continues to perform this step.
  • Step 505 The spectrum switching decision unit generates a spectrum switching command and a specified frequency switching command transmission number, where the spectrum switching command includes at least a target working frequency point and radio resource configuration information.
  • Step 506 The sending unit sends a spectrum switching command by using a channel addressed by the cognitive radio dedicated wireless network device identifier, and +1 the frequency of the spectrum switching command.
  • Step 507 The sending unit determines whether the number of times the spectrum switching command is sent reaches the specified number of times of the spectrum switching command, and if yes, the sending unit sets the number of times the spectrum switching command is sent to 0, and executes step 508; otherwise, proceeds to step 506.
  • Step 508 The spectrum switching execution unit controls the base station device to stop data transmission and reception on the source working frequency point, and recover the cell at the target working frequency point.
  • the base station device may be a cell management device such as an LTE base station using CR technology, or an RNC (Radio Network Controller) in 3G and 2G systems.
  • a cell management device such as an LTE base station using CR technology, or an RNC (Radio Network Controller) in 3G and 2G systems.
  • RNC Radio Network Controller
  • a third embodiment of the present invention provides a spectrum switching method in a cognitive radio system, where the processing of the UE of the CR system is described in detail.
  • the functional unit of the UE includes: a spectrum switching execution unit and a receiving unit.
  • a cognitive radio dedicated wireless network device identification storage unit based on the above functional units, as shown in FIG. 7, the spectrum switching method in the cognitive radio system includes the following steps:
  • Step 701 The receiving unit acquires a cognitive radio-dedicated wireless network device identifier of the cell by receiving system information or UE-specific signaling or a protocol static specification.
  • Step 702 The cognitive radio dedicated wireless network device identifier storage unit stores the acquired cognitive radio dedicated wireless network device identifier. It should be noted that if the cognitive radio-dedicated wireless network device identifier has been previously stored, the cognitive radio-specific wireless network device identifier acquired in step 701 is updated before the cognitive radio dedicated for storage. Wireless network device identification.
  • Step 703 The receiving unit receives the downlink subframe, and determines whether the channel is addressed by the cognitive radio-dedicated wireless network device identifier. If yes, step 704 is performed; otherwise, the step is continued.
  • Step 704 The receiving unit receives the spectrum switching command according to the channel information addressed by the cognitive radio dedicated wireless network device identifier.
  • Step 705 The spectrum switching execution unit triggers performing a spectrum switching process specified by the spectrum switching command, that is, performing spectrum switching by using the target working frequency point and the radio resource configuration information.
  • the UE may be a UE in a mobile communication system such as LTE, TD-SCDMA, HSPA, CDMA-2000, WCDMA, or GSM adopting CR technology.
  • a mobile communication system such as LTE, TD-SCDMA, HSPA, CDMA-2000, WCDMA, or GSM adopting CR technology.
  • the embodiment of the present invention further provides a base station device.
  • the device includes:
  • the determining module 11 is configured to generate a spectrum switching command after the user of the authorized system is found at the current working frequency point;
  • the sending module 12 is configured to send the spectrum switching command by using a channel addressed by the cognitive radio dedicated wireless network device identifier, and trigger the user equipment in the cell to perform spectrum switching by using the spectrum switching command.
  • the determining module 11 is further configured to determine a number of times of sending the spectrum switching command, where the sending module 12 is configured to send the spectrum switching command by using a channel addressed by the cognitive radio dedicated wireless network device identifier according to the number of times of sending.
  • the base station device further includes: a management module, configured to, with the user equipment in the cell, a cognitive radio dedicated wireless network device identifier that transmits a spectrum switching command.
  • the management module 13 is specifically configured to: advertise a cognitive radio-dedicated wireless network device identifier for transmitting a spectrum switching command with a user equipment in a cell by using one of the following methods: statically specifying, by the protocol, a cognitive radio system reserved but not defined
  • the wireless network device identifier is a cognitive radio dedicated wireless network device identifier corresponding to the user equipment in the cell;
  • the cognitive radio-dedicated wireless network device identifier corresponding to the user equipment in the cell, and broadcasting the cognitive radio-dedicated wireless network device identifier to the cell by using the system information User equipment inside;
  • the cognitive radio-dedicated wireless network device identifier includes: a cognitive radio CR-radio network temporary identifier RNTI.
  • the channel addressed by the cognitive radio dedicated wireless network device identifier includes: a physical layer control channel; or a physical layer service channel scheduled by the physical layer control channel.
  • the channel to which the cognitive radio dedicated radio network device identifier is addressed includes: a physical downlink control channel PDCCH; and the sending module 12 is specifically configured to use a CR-RNTI addressed PDCCH.
  • the downlink control information DCI transmits or schedules the spectrum switching command, and the CR-RNTI addressed PDCCH DCI is located in a common search space.
  • modules of the device of the present invention may be integrated or integrated.
  • the above modules can be combined into one module, or can be further split into multiple sub-modules.
  • Embodiment 5
  • the embodiment of the present invention further provides a user equipment.
  • the device includes:
  • the receiving module 21 is configured to receive a spectrum switching command from the base station device by using a channel addressed by the cognitive radio dedicated wireless network device identifier;
  • the switching module 22 is configured to perform spectrum switching by using the spectrum switching command.
  • the receiving module 21 is specifically configured to detect, in each downlink subframe, whether the channel is acknowledged by the radio-dedicated wireless network device identifier, and if yes, receive a spectrum switching command from the base station device.
  • the user equipment further includes: a management module 23, configured to, with the base station device, a cognitive radio dedicated wireless network device identifier that transmits a spectrum switching command.
  • the management module 23 is specifically configured to, by using one of the following manners, a cognitive radio dedicated wireless network device identifier that transmits a spectrum switching command with the base station device:
  • a wireless network device identifier reserved by the cognitive radio system but not defined by the protocol is identified as a cognitive radio dedicated wireless network device identifier corresponding to the user equipment in the cell;
  • the base station device After the base station device selects a cognitive radio dedicated wireless network device identifier corresponding to the user equipment in the cell from the wireless network device identifier that is not reserved and is not allocated to the user equipment, the base station device receives the system information to the cell. a cognitive radio-specific wireless network device identifier broadcasted by the user equipment;
  • the base station device After the base station device selects a cognitive radio-dedicated wireless network device identifier corresponding to the user equipment in the cell from the wireless network device identifier that is not reserved and is not allocated to the user equipment, the base station device receives the user-specific signaling The cognitive radio-specific wireless network device identifier sent.
  • the cognitive radio dedicated wireless network device identifier includes: a cognitive radio CR-radio network temporary identifier RNTI.
  • the channel addressed by the cognitive radio dedicated wireless network device identifier includes: a physical layer control channel; or a physical layer service channel scheduled by the physical layer control channel.
  • the channel that is addressed by the cognitive radio-dedicated wireless network device identifier includes: a physical downlink control channel PDCCH; and the receiving module 21 is specifically configured to receive the CR- by the base station device.
  • the RN downlink-addressed PDCCH downlink control information DCI transmits or schedules the spectrum switching command, and the CR-RNTI addressed PDCCH DCI is located in a common search space.
  • modules of the device of the present invention may be integrated or integrated.
  • the above modules can be combined into one module, or can be further split into multiple sub-modules.
  • the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is a better implementation. the way.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for making a A computer device (which may be a personal computer, server, or network device, etc.) performs the methods described in various embodiments of the present invention.
  • modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the description of the embodiments, or the corresponding changes may be located in one or more apparatuses different from the embodiment.
  • the modules of the above embodiments may be combined into one module, or may be further split into multiple sub-modules.
  • the serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.
  • the above disclosure is only a few specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.

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Abstract

本发明公开了一种认知无线电***中的频谱切换方法和设备，该方法包括：基站设备与小区内的用户设备约定传输频谱切换命令的认知无线电专用无线网络设备标识；所述基站设备在当前工作频点上发现授权***的用户出现后，生成频谱切换命令；所述基站设备通过认知无线电专用无线网络设备标识寻址的信道发送所述频谱切换命令，触发小区内的用户设备利用所述频谱切换命令执行频谱切换。本发明实施例中，可以迅速准确地实现频谱切换，降低频谱切换命令的传输延迟，可有效地避免对授权***用户的干扰，从而保证授权***的服务性能，且可以保证CR***用户的业务连续性的要求。

Description

一种认知无线电***中的频谱切换方法和设备 本申请要求于 2011 年 12 月 8 日提交中国专利局， 申请号为 201110405827.7 , 发明名称为 "一种认知无线电***中的频谱切换 方法和设备" 的中国专利申请的优先权， 其全部内容通过引用结合 在本申请中。 技术领域
本发明涉及通信技术领域，尤其涉及一种认知无线电***中的频 谱切换方法和设备。
背景技术
随着无线通信技术的快速发展， 频谱资源贫乏的问题日益严重， 通过对无线通信频谱进行的监测和研究，发现某些频段（如电视频段 ) 在大多数时间内并未使用或者在大多数地域内并未使用，而某些频段 出现了多***多用户同时竟争的情况，即频谱资源的使用存在不均衡 现象。 CR ( Cognitive Radio, 认知无线电）技术在这种背景下产生， 其基本思想是： 在不对授权***造成干扰的前提下， 通过监测当前无 线通信环境的变化来动态机会式地接入授权***的空白频谱，以进行 通信。
CR***进行机会式地接入授权***的空白频谱的前提是保护授 权***的业务不受到 CR***的干扰， 基于此要求： （ 1 ) CR***需 要具备准确判断出授权***的空白频谱的能力； （2 ) CR***需要具 备频谱切换能力， 即 CR***发现授权***在当前使用的空白频谱上 出现后， 需要及时退出当前使用的空白频谱。
具体的，频谱切换过程需要尽量保证对授权***的通信不产生影 响，在检测到授权用户出现时，需要快速退出当前使用的空白频谱（源 工作频点）， 并选择新的频谱（目标工作频点）建立小区， 在此过程 中还需要将 CR用户快速切换到新建立的小区， 保证 CR用户的服务 连续性。 目前频谱切换方式包括：
方式一、 如图 1所示的频谱切换实现流程图， CR***的基站在 当前工作频点（源工作频点）上发现授权用户出现后， 向小区内需要 执行切换的每个 UE ( User Equipment, 用户设备）发送 UE-Specific 频谱切换命令，由 UE接收频谱切换命令，并触发执行频谱切换过程； 之后， 基站停止在源工作频点的收发， 并在目标工作频点恢复小区。
方式二、 如图 2所示的频谱切换实现流程图， CR***的基站在 当前工作频点（源工作频点）上发现授权用户出现后， 通过寻呼等方 式通知小区内的 UE***信息更新， 由 UE读取寻呼信息， 获取*** 信息更新通知； 之后， CR***的基站广播更新的***信息 （即包含 小区公共 ( Cell-Common )频谱切换命令的***广播信息）， 由 UE接 收频谱切换命令， 并触发执行频谱切换过程； 之后， 基站停止在源工 作频点的收发， 并在目标工作频点恢复小区。
在实现本发明的过程中，发明人发现现有技术中至少存在以下问 题：
在采用方式一处理时， 频谱切换过程中需要将整个小区内所有 RRC ( Radio Resource Control, 无线资源控制 )连接态的 UE切换到 目标工作频点上， 小区内 RRC连接态的 UE很多 （如 1200个以上 ), 因此在向小区内需要执行切换的每个 UE逐一发送一条 UE-Specific 频谱切换命令时， 需要向大量的 UE发送频谱切换命令， 导致较长的 频谱切换命令传输延迟， 并导致较长的频谱切换时间。
在采用方式二处理时，基站首先需要通过寻呼等方式通知小区内 的 UE***信息更新， 然后再广播包含小区公共频谱切换命令的*** 广播信息， 导致较长的频谱切换命令传输延迟， 并导致较长的频谱切 换时间。
因此， 上述方式一和方式二的频谱切换方式， 均会导致较长的频 谱切换时间， 从而无法满足 CR***对授权***用户的干扰保护、 且 无法保证 CR***用户的业务连续性的要求。
发明内容
本发明实施例提供一种认知无线电***中的频谱切换方法和设 备， 以快速进行频谱切换。
为了达到上述目的，本发明实施例提供一种认知无线电***中的 频谱切换方法， 包括：
基站设备在当前工作频点上发现授权***的用户出现后，生成频 谱切换命令；
所述基站设备通过认知无线电专用无线网络设备标识寻址的信 道发送所述频谱切换命令，触发小区内的用户设备利用所述频谱切换 命令执行频谱切换。
本发明实施例提供一种认知无线电***中的频谱切换方法， 包 括：
用户设备通过认知无线电专用无线网络设备标识寻址的信道接 收来自基站设备的频谱切换命令；
所述用户设备利用所述频谱切换命令执行频谱切换。
本发明实施例提供一种基站设备， 包括：
确定模块， 用于在当前工作频点上发现 4受权***的用户出现后， 生成频谱切换命令；
发送模块，用于通过认知无线电专用无线网络设备标识寻址的信 道发送所述频谱切换命令，触发小区内的用户设备利用所述频谱切换 命令执行频谱切换。
本发明实施例提供一种用户设备， 包括：
接收模块，用于通过认知无线电专用无线网络设备标识寻址的信 道接收来自基站设备的频谱切换命令；
切换模块， 用于利用所述频谱切换命令执行频谱切换。
与现有技术相比， 本发明实施例至少具有以下优点： 可以迅速准 确地实现频谱切换， 降低频谱切换命令的传输延迟， 可有效地避免对 授权***用户的干扰， 从而保证授权***的服务性能， 且可以保证
CR***用户的业务连续性的要求。
附图说明
图 1和图 2是现有技术中频谱切换实现流程示意图；
图 3 是本发明实施例一提供的一种认知无线电***中的频谱切 换方法流程示意图；
图 4是本发明实施例二提供的基站设备的功能单元示意图； 图 5 是本发明实施例二提供的一种认知无线电***中的频谱切 换方法流程示意图；
图 6是本发明实施例三提供的 UE的功能单元示意图；
图 7 是本发明实施例三提供的一种认知无线电***中的频谱切 换方法流程示意图；
图 8是本发明实施例四提供的一种基站设备结构示意图； 图 9是本发明实施例五提供的一种用户设备结构示意图。
具体实施方式
实施例一
本发明实施例一提供一种认知无线电***中的频谱切换方法，该 方法可至少适用于采用认知无线电技术的 LTE( Long Term Evolution, 长期演进）、 TD-SCDMA ( Time Division-Synchronous Code Division Multiple Access , 时分同步码分多址）、 HSPA ( High-Speed Packet Access, 高速链路分组接入）、 CDMA ( Code Division Multiple Access , 码分多址） -2000、 WCDMA( Wideband Code Division Multiple Access , 宽带码分多址 )、 GSM ( global system for mobile communications , 全 球移动通信***）等移动通信***。
如图 3 所示， 该认知无线电***中的频谱切换方法包括以下步 骤：
步骤 301 , 基站设备 (该基站设备为基于 CR***的基站设备） 与小区内的 UE (该 UE为基于 CR***的 UE )约定传输频谱切换命 令的认知无线电专用无线网络设备标识。
本发明实施例中， 基站设备与小区内的 UE约定认知无线电专用 无线网络设备标识的方式， 包括但不限于以下方式之一：
方式一、 通过协议静态规定认知无线电专用无线网络设备标识； 具体的， 在基站设备侧和 UE侧， 可以通过协议静态规定将认知无线 电***预留但未定义的某个无线网络设备标识指定为小区内的 UE所 对应的认知无线电专用无线网络设备标识。
方式二、通过***信息动态配置认知无线电专用无线网络设备标 识； 具体的， 在基站设备侧， 基站设备从非预留且未分配给 UE的无 线网络设备标识中选择一个作为小区内的 UE所对应的认知无线电专 用无线网络设备标识，并通过***信息将认知无线电专用无线网络设 备标识广播给小区内的 UE; 在 UE侧， UE可以接收基站设备通过系 统信息向小区内的 UE广播的认知无线电专用无线网络设备标识。
方式三、通过用户专用信令动态配置认知无线电专用无线网络设 备标识； 具体的， 在基站设备侧， 基站设备从非预留且未分配给 UE 的无线网络设备标识中选择一个作为小区内的 UE所对应的认知无线 电专用无线网络设备标识，并通过用户专用信令将认知无线电专用无 线网络设备标识发送给小区内的相关 UE; 在 UE侧， UE可以接收基 站设备通过用户专用信令所发送的认知无线电专用无线网络设备标 识。
步骤 302, 基站设备在当前工作频点 （即源工作频点， 为当前使 用的空白频谱）上发现授权***的用户出现后， 确定需要执行频谱切 换过程， 并生成频谱切换命令， 该频谱切换命令中至少包含目标工作 频点以及无线资源配置信息。
步骤 303 , 基站设备通过认知无线电专用无线网络设备标识寻址 的信道发送频谱切换命令， 以触发小区内的 UE利用频谱切换命令执 行频谱切换。
本发明实施例中， 在生成频谱切换命令的过程中，基站设备还可 以确定频谱切换命令的发送次数； 在发送频谱切换命令的过程中，基 站设备按照该发送次数通过认知无线电专用无线网络设备标识寻址 的信道发送频谱切换命令； 例如， 发送次数为 3次时， 基站设备通过 认知无线电专用无线网络设备标识寻址的信道发送 3 次频谱切换命 令。
步骤 304, UE通过认知无线电专用无线网络设备标识寻址的信 道接收来自基站设备的频谱切换命令。
具体的， UE需要在每个下行子帧检测信道是否被认知无线电专 用无线网络设备标识寻址， 如果是， 则该 UE接收来自基站设备的频 谱切换命令（即 UE在检测到认知无线电专用无线网络设备标识寻址 的信道之后， 按照信息读取频谱切换命令， 触发执行频谱切换命令规 定的频谱切换过程， 后续步骤 305 ); 否则继续执行该检测过程。 需要注意的是， 该 UE为小区内配置了相关认知无线电专用无线 网络设备标识的 UE。
步骤 305 , UE利用频谱切换命令执行频谱切换。 其中， UE可以 利用频谱切换命令中携带的目标工作频点以及无线资源配置等信息 执行频谱切换。
本发明实施例中，基站设备通过认知无线电专用无线网络设备标 识寻址的信道发送频谱切换命令之后，基站设备还需要停止在源工作 频点的数据收发， 并利用目标工作频点恢复小区， 该过程可以在步骤 303之后执行， 在此不再赘述。
本发明实施例中，该基站设备在通过认知无线电专用无线网络设 备标识寻址的信道发送频谱切换命令时，该认知无线电专用无线网络 设备标识寻址的信道可以为现有的信道或者新定义的信道，且该认知 无线电专用无线网络设备标识寻址的信道包括但不限于：物理层控制 信道； 或者， 物理层控制信道调度的物理层业务信道。
为了更加清楚的阐述上述实施例， 以 LTE ***为例进行进一步 的说明。在 LTE***中， PDCCH ( Physical Downlink Control Channel, 物理下行控制信道）用于 7 载 DCI ( Downlink Control Information, 下行控制信息）， 包括对下行和上行数据传输的调度信息和上行功率 控制等信息。 进一步的， PDCCH采用多用户共享资源的方式， 且 UE 通过一定的规则在整个控制区域内以一定规则搜索控制信令； PDCCH的 DCI信息通过 RNTI ( Radio Network Temporary Identifier, 无线网络临时标识）加4尤到 16比特 CRC( Cyclical Redundancy Check, 循环冗余码校验）方式， 以隐式方式标识该 DCI的目标 UE。
目前在 LTE***中定义了 DCI 0、 DCI 1、 DCI 1A、 DCI 1B、 DCI 1C、 DCI ID, DCI 2、 DCI 2A、 DCI 2B、 DCI 3、 DCI 3A等 11种 DCI 格式； 且 RNTI包括公共 RNTI与专用 RNTI; 如表 1所示， SI-RNTI、 Ρ-RNTL· M-RNTI与 RA-RNTI为小区公共 RNTI,用于调度传输*** 与公共信息， 可寻址的 DCI格式包括 DCI 1A与 DCI 1C, 搜索空间 位于公共搜索空间； 另外 LTE***还预留了 FFF4-FFFC的 RNTI,用 于以后扩展其它应用。
表 1
Figure imgf000010_0001
0001-003C RA ( Random Access , 随机接入） -RNTI,
C-RNTI(Cell Radio Network Temporary Identity 小区无线网络临时标识）， Semi-Persistent Scheduling (半持续调度） C-RNTI, Temporary (临时） C-RNTI , TPC(Transmit Power Control 发射功率控制） -PUCCH ( Physical Uplink Control Channel 物理上行控制信道 ) -RNTI and TPC-PUSCH ( Physical Uplink Shared Channel, 物理上行共享信道 )-RNTI( see note(参阅注释 ) )
003D-FFF3 C-RNTI , Semi-Persistent Scheduling
C-RNTI, Temporary C-RNTI , TPC-PUCCH-RNTI and TPC-PUSCH-RNTI
FFF4-FFFC Reserved for future use (预留备用 )
FFFD M ( Multimedia Broadcast Multicast Service , 多媒体广播多播业务） -RNTI
FFFE P ( Paging寻呼） -RNTI
FFFF SI ( System Information ***信息） -RNTI 基于上述分析发现， 本发明实施例中， 在 LTE ***中， 该认知 无线电专用无线网络设备标识的实现形式包括但不限于： CR-RNTI; 且基站设备与 UE约定传输频谱切换命令的 CR-RNTI的方式包括但 不限于：
方式一、 通过协议静态规定 CR-RNTI; 具体的， 可以将 LTE系 统预留但未定义的某个 RNTI指定为小区内的 CR-RNTI; 例如， 可以 将预留但未定义的 FFF4-FFFC (如表 1所示 )中的某一个（如 FFFC ) 指定为 CR-RNTI。 方式二、 通过***信息动态配置 CR-RNTI; 具体的， LTE *** 的基站设备从非预留且未分配给 UE 的 RNTI 中选择一个作为 CR-RNTI, 并通过***信息将 CR-RNTI广播给小区内的所有 UE; UE通过接收***广播信息获取本小区内的 CR-RNTI。
方式三、 通过 UE专用信令动态配置 CR-RNTI; 具体的， 基站设 备从非预留且未分配给 UE的 RNTI中选择一个作为 CR-RNTI,并通 过 UE专用信令（如 RRC连接建立消息、 RRC连接重建立消息、 RRC 重配置消息等 )将 CR-RNTI通知给小区内的相关 UE。
本发明实施例中， 在 LTE ***中， 该认知无线电专用无线网络 设备标识寻址的信道包括但不限于： PDCCH, 即 CR-RNTI寻址的信 道的一种实现方式是 PDCCH; 进一步的， 基站设备通过认知无线电 专用无线网络设备标识寻址的信道发送频谱切换命令包括：基站设备 采用 CR-RNTI 寻址的 PDCCH DCI 发送或调度频谱切换命令， 且 CR-RNTI寻址的 PDCCH DCI位于公共搜索空间。其中，发送频谱切 换命令是指采用 PDCCH DCI直接承载频谱切换命令； 调度频谱切换 命令是指采用 PDCCH DCI 指示承载频谱切换命令的 PDSCH ( Physical Downlink Shared Channel, 物理下行共享信道） 的时频资 源及传输格式等信息。
需要注意的是，可以使用的 PDCCH DCI包括但不限于：目前 LTE ***内已存在的调度***公共信息的 PDCCH DCI,如 DCI 1A与 DCI 1C 等； 或者， 专门为频谱切换命令调度传输而定义的新的 PDCCH DCI格式。
综上所述， 本发明实施例中， 基站设备在与 UE约定了传输频谱 切换命令的认知无线电专用无线网络设备标识后， 当在当前使用的空 白频谱上发现授权***的用户出现时， CR***的基站设备可以采用 认知无线电专用无线网络设备标识寻址的信道传输频谱切换命令，触 发小区内的所有 UE执行频谱切换； 而小区内配置了相关认知无线电 专用无线网络设备标识的 UE在每个下行子帧检测信道是否被认知无 线电专用无线网络设备标识寻址， 如果是， 则按照相关的信息指示接 收频谱切换命令， 触发执行频谱切换过程。 通过采用上述流程， 可迅 速准确地实现频谱切换， 降低频谱切换命令的传输延迟， 可有效地避 免对授权***用户的干扰， 从而保证授权***的服务性能， 且可保证 CR***用户的业务连续性的要求。
实施例二
本发明实施例二提供一种认知无线电***中的频谱切换方法，以 对 CR***的基站设备的处理进行详细说明， 该基站设备的功能单元 如图 4所示， 包括： 频谱切换执行单元、 频谱切换决策单元、 认知无 线电专用无线网络设备标识管理单元、发送单元； 基于上述各功能单 元，如图 5所示，该认知无线电***中的频谱切换方法包括以下步骤： 步骤 501 , 认知无线电专用无线网络设备标识管理单元判断基站 设备是否与小区内的 UE约定了认知无线电专用无线网络设备标识； 如果是， 执行步骤 504; 如果否， 执行步骤 502。
步骤 502, 认知无线电专用无线网络设备标识管理单元从小区非 预留且未分配的无线网络设备标识中选择任意一个无线网络设备标 识指定为认知无线电专用无线网络设备标识。
步骤 503 , 发送单元将选择的认知无线电专用无线网络设备标识 通过***广播消息或者 UE专用信令发送给小区内的相关 UE。
步骤 504, 频谱切换决策单元判断当前工作频点上 4受权***的用 户是否出现（即判断是否需要执行频谱切换过程）， 如果是， 则执行 步骤 505; 否则， 继续执行本步骤。 步骤 505 , 频谱切换决策单元生成频谱切换命令以及规定频谱切 换命令发送次数，该频谱切换命令中至少包含目标工作频点及无线资 源配置信息。
步骤 506, 发送单元利用认知无线电专用无线网络设备标识寻址 的信道发送频谱切换命令， 并将频谱切换命令发送次数 +1。
步骤 507, 发送单元判断频谱切换命令发送次数是否达到规定的 频谱切换命令发送次数， 如果是， 则发送单元将频谱切换命令发送次 数置 0, 并执行步骤 508 , 否则， 继续执行步骤 506。
步骤 508, 频谱切换执行单元控制基站设备停止源工作频点上的 数据收发， 并在目标工作频点恢复小区。
本发明的上述实施例中，基站设备可以为采用 CR技术的 LTE基 站、 3G及 2G***中的 RNC ( Radio Network Controller, 无线网络控 制器）等小区管理设备。
实施例三
本发明实施例三提供一种认知无线电***中的频谱切换方法，以 对 CR***的 UE的处理进行详细说明， 该 UE的功能单元如图 6所 示， 包括： 频谱切换执行单元、 接收单元、 认知无线电专用无线网络 设备标识存储单元； 基于上述各功能单元， 如图 7所示， 该认知无线 电***中的频谱切换方法包括以下步骤：
步骤 701 , 接收单元通过接收***信息或者 UE专用信令或者协 议静态规定等方式， 获取小区的认知无线电专用无线网络设备标识。
步骤 702, 认知无线电专用无线网络设备标识存储单元存储获取 的认知无线电专用无线网络设备标识。 需要注意的是， 如果之前已经 存储了认知无线电专用无线网络设备标识，则通过步骤 701中获取的 认知无线电专用无线网络设备标识更新之前存储的认知无线电专用 无线网络设备标识。
步骤 703 , 接收单元接收下行子帧， 并判断信道是否被认知无线 电专用无线网络设备标识寻址， 如果是， 则执行步骤 704, 否则继续 执行本步骤。
步骤 704, 接收单元按照认知无线电专用无线网络设备标识寻址 的信道信息接收频谱切换命令。
步骤 705 , 频谱切换执行单元触发执行频谱切换命令规定的频谱 切换过程， 即利用目标工作频点及无线资源配置信息进行频谱切换。
本发明的上述实施例中， UE 可以为采用 CR 技术的 LTE、 TD-SCDMA、 HSPA、 CDMA-2000、 WCDMA、 GSM 等移动通信系 统中的 UE。
实施例四
基于与上述方法同样的发明构思，本发明实施例中还提供了一种 基站设备， 如图 8所示， 该设备包括：
确定模块 11 , 用于在当前工作频点上发现授权***的用户出现 后， 生成频谱切换命令；
发送模块 12, 用于通过认知无线电专用无线网络设备标识寻址 的信道发送所述频谱切换命令，触发小区内的用户设备利用所述频谱 切换命令执行频谱切换。
所述确定模块 11 , 还用于确定频谱切换命令的发送次数； 所述 发送模块 12, 具体用于按照该发送次数通过认知无线电专用无线网 络设备标识寻址的信道发送所述频谱切换命令。
本发明实施例中， 该基站设备还包括： 管理模块 13 , 用于与小 区内的用户设备约定传输频谱切换命令的认知无线电专用无线网络 设备标识。 所述管理模块 13 , 具体用于通过以下方式之一与小区内的用户 设备约定传输频谱切换命令的认知无线电专用无线网络设备标识： 通过协议静态规定认知无线电***预留但未定义的某个无线网 络设备标识为小区内的用户设备所对应的认知无线电专用无线网络 设备标识；
从非预留且未分配给用户设备的无线网络设备标识中选择小区 内的用户设备所对应的认知无线电专用无线网络设备标识 ,并通过系 统信息将认知无线电专用无线网络设备标识广播给小区内的用户设 备；
从非预留且未分配给用户设备的无线网络设备标识中选择小区 内的用户设备所对应的认知无线电专用无线网络设备标识 ,并通过用 户专用信令将认知无线电专用无线网络设备标识发送给小区内的用 户设备。
本发明实施例中， 在长期演进 LTE ***中， 所述认知无线电专 用无线网络设备标识包括：认知无线电 CR-无线网络临时标识 RNTI。
本发明实施例中，所述认知无线电专用无线网络设备标识寻址的 信道包括： 物理层控制信道； 或者， 物理层控制信道调度的物理层业 务信道。
本发明实施例中， 在 LTE ***中， 所述认知无线电专用无线网 络设备标识寻址的信道包括： 物理下行控制信道 PDCCH; 所述发送 模块 12, 具体用于采用 CR-RNTI寻址的 PDCCH下行控制信息 DCI 发送或调度所述频谱切换命令， 且 CR-RNTI寻址的 PDCCH DCI位 于公共搜索空间。
其中，本发明装置的各个模块可以集成于一体，也可以分离部署。 上述模块可以合并为一个模块， 也可以进一步拆分成多个子模块。 实施例五
基于与上述方法同样的发明构思，本发明实施例中还提供了一种 用户设备， 如图 9所示， 该设备包括：
接收模块 21 , 用于通过认知无线电专用无线网络设备标识寻址 的信道接收来自基站设备的频谱切换命令；
切换模块 22, 用于利用所述频谱切换命令执行频谱切换。
所述接收模块 21 , 具体用于在每个下行子帧检测信道是否被认 知无线电专用无线网络设备标识寻址， 如果是， 则接收来自基站设备 的频谱切换命令。
本发明实施例中， 该用户设备还包括： 管理模块 23 , 用于与所 述基站设备约定传输频谱切换命令的认知无线电专用无线网络设备 标识。
所述管理模块 23 , 具体用于通过以下方式之一与所述基站设备 约定传输频谱切换命令的认知无线电专用无线网络设备标识：
通过协议静态规定认知无线电***预留但未定义的某个无线网 络设备标识为小区内的用户设备所对应的认知无线电专用无线网络 设备标识；
在所述基站设备从非预留且未分配给用户设备的无线网络设备 标识中选择小区内的用户设备所对应的认知无线电专用无线网络设 备标识后，接收所述基站设备通过***信息向小区内的用户设备广播 的认知无线电专用无线网络设备标识；
在所述基站设备从非预留且未分配给用户设备的无线网络设备 标识中选择小区内的用户设备所对应的认知无线电专用无线网络设 备标识后，接收所述基站设备通过用户专用信令所发送的认知无线电 专用无线网络设备标识。 本发明实施例中， 在长期演进 LTE ***中， 所述认知无线电专 用无线网络设备标识包括：认知无线电 CR-无线网络临时标识 RNTI。
本发明实施例中，所述认知无线电专用无线网络设备标识寻址的 信道包括： 物理层控制信道； 或者， 物理层控制信道调度的物理层业 务信道。
本发明实施例中， 在 LTE ***中， 所述认知无线电专用无线网 络设备标识寻址的信道包括： 物理下行控制信道 PDCCH; 所述接收 模块 21 , 具体用于接收所述基站设备采用 CR-RNTI寻址的 PDCCH 下行控制信息 DCI发送或调度的所述频谱切换命令， 且 CR-RNTI寻 址的 PDCCH DCI位于公共搜索空间。
其中，本发明装置的各个模块可以集成于一体，也可以分离部署。 上述模块可以合并为一个模块， 也可以进一步拆分成多个子模块。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解 到本发明可借助软件加必需的通用硬件平台的方式来实现， 当然也可 以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解， 本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以 软件产品的形式体现出来， 该计算机软件产品存储在一个存储介质 中， 包括若干指令用以使得一台计算机设备（可以是个人计算机， 服 务器， 或者网络设备等）执行本发明各个实施例所述的方法。
本领域技术人员可以理解附图只是一个优选实施例的示意图，附 图中的模块或流程并不一定是实施本发明所必须的。
本领域技术人员可以理解实施例中的装置中的模块可以按照实 施例描述进行分布于实施例的装置中，也可以进行相应变化位于不同 于本实施例的一个或多个装置中。上述实施例的模块可以合并为一个 模块， 也可以进一步拆分成多个子模块。 上述本发明实施例序号仅仅为了描述， 不代表实施例的优劣。 以上公开的仅为本发明的几个具体实施例， 但是， 本发明并非局 限于此，任何本领域的技术人员能思之的变化都应落入本发明的保护 范围。

Claims

权利要求
1、 一种认知无线电***中的频谱切换方法， 其特征在于， 包括： 基站设备在当前工作频点上发现授权***的用户出现后，生成频 谱切换命令；
所述基站设备通过认知无线电专用无线网络设备标识寻址的信 道发送所述频谱切换命令，触发小区内的用户设备利用所述频谱切换 命令执行频谱切换。
2、 如权利要求 1所述的方法， 其特征在于， 所述基站设备通过 认知无线电专用无线网络设备标识寻址的信道发送所述频谱切换命 令， 包括：
所述基站设备确定频谱切换命令的发送次数，并按照该发送次数 通过认知无线电专用无线网络设备标识寻址的信道发送所述频谱切 换命令。
3、 如权利要求 1所述的方法， 其特征在于， 所述基站设备通过 认知无线电专用无线网络设备标识寻址的信道发送所述频谱切换命 令， 之前还包括：
所述基站设备与小区内的用户设备约定传输频谱切换命令的认 知无线电专用无线网络设备标识。
4、 如权利要求 3所述的方法， 其特征在于， 所述基站设备与小 区内的用户设备约定传输频谱切换命令的认知无线电专用无线网络 设备标识的方式， 包括以下方式之一：
通过协议静态规定认知无线电***预留但未定义的某个无线网 络设备标识为小区内的用户设备所对应的认知无线电专用无线网络 设备标识；
所述基站设备从非预留且未分配给用户设备的无线网络设备标 识中选择小区内的用户设备所对应的认知无线电专用无线网络设备 标识，并通过***信息将认知无线电专用无线网络设备标识广播给小 区内的用户设备；
所述基站设备从非预留且未分配给用户设备的无线网络设备标 识中选择小区内的用户设备所对应的认知无线电专用无线网络设备 标识，并通过用户专用信令将认知无线电专用无线网络设备标识发送 给小区内的用户设备。
5、 如权利要求 1-4任一项所述的方法， 其特征在于， 在长期演 进 LTE ***中， 所述认知无线电专用无线网络设备标识包括： 认知 无线电 CR-无线网络临时标识 RNTI。
6、 如权利要求 1-4任一项所述的方法， 其特征在于， 所述认知 无线电专用无线网络设备标识寻址的信道包括：
物理层控制信道； 或者，
物理层控制信道调度的物理层业务信道。
7、 如权利要求 6所述的方法， 其特征在于， 在 LTE***中， 所 述认知无线电专用无线网络设备标识寻址的信道包括：物理下行控制 信道 PDCCH;
所述基站设备通过认知无线电专用无线网络设备标识寻址的信 道发送所述频谱切换命令包括： 所述基站设备采用 CR-RNTI寻址的 PDCCH下行控制信息 DCI 发送或调度所述频谱切换命令， 且 CR-RNTI寻址的 PDCCH DCI位 于公共搜索空间。
8、 一种认知无线电***中的频谱切换方法， 其特征在于， 包括： 用户设备通过认知无线电专用无线网络设备标识寻址的信道接 收来自基站设备的频谱切换命令；
所述用户设备利用所述频谱切换命令执行频谱切换。
9、 如权利要求 8所述的方法， 其特征在于， 所述用户设备通过 认知无线电专用无线网络设备标识寻址的信道接收来自基站设备的 频谱切换命令， 进一步包括：
所述用户设备在每个下行子帧检测信道是否被认知无线电专用 无线网络设备标识寻址， 如果是， 则所述用户设备接收来自基站设备 的频谱切换命令。
10、 如权利要求 8所述的方法， 其特征在于， 所述用户设备通过 认知无线电专用无线网络设备标识寻址的信道接收来自基站设备的 频谱切换命令， 之前还包括：
所述用户设备与所述基站设备约定传输频谱切换命令的认知无 线电专用无线网络设备标识。
11、 如权利要求 10所述的方法， 其特征在于， 所述用户设备与 所述基站设备约定传输频谱切换命令的认知无线电专用无线网络设 备标识的方式， 包括以下方式之一：
通过协议静态规定认知无线电***预留但未定义的某个无线网 络设备标识为小区内的用户设备所对应的认知无线电专用无线网络 设备标识；
在所述基站设备从非预留且未分配给用户设备的无线网络设备 标识中选择小区内的用户设备所对应的认知无线电专用无线网络设 备标识后，所述用户设备接收所述基站设备通过***信息向小区内的 用户设备广播的认知无线电专用无线网络设备标识；
在所述基站设备从非预留且未分配给用户设备的无线网络设备 标识中选择小区内的用户设备所对应的认知无线电专用无线网络设 备标识后，所述用户设备接收所述基站设备通过用户专用信令所发送 的认知无线电专用无线网络设备标识。
12、 一种基站设备， 其特征在于， 包括：
确定模块， 用于在当前工作频点上发现 4受权***的用户出现后， 生成频谱切换命令；
发送模块，用于通过认知无线电专用无线网络设备标识寻址的信 道发送所述频谱切换命令，触发小区内的用户设备利用所述频谱切换 命令执行频谱切换。
13、 如权利要求 12所述的基站设备， 其特征在于，
所述确定模块， 还用于确定频谱切换命令的发送次数； 所述发送模块，具体用于按照该发送次数通过认知无线电专用无 线网络设备标识寻址的信道发送所述频谱切换命令。
14、 如权利要求 12所述的基站设备， 其特征在于， 还包括： 管理模块，用于与小区内的用户设备约定传输频谱切换命令的认 知无线电专用无线网络设备标识。
15、 如权利要求 14所述的基站设备， 其特征在于，
所述管理模块，具体用于通过以下方式之一与小区内的用户设备 约定传输频谱切换命令的认知无线电专用无线网络设备标识：
通过协议静态规定认知无线电***预留但未定义的某个无线网 络设备标识为小区内的用户设备所对应的认知无线电专用无线网络 设备标识；
从非预留且未分配给用户设备的无线网络设备标识中选择小区 内的用户设备所对应的认知无线电专用无线网络设备标识 ,并通过系 统信息将认知无线电专用无线网络设备标识广播给小区内的用户设 备；
从非预留且未分配给用户设备的无线网络设备标识中选择小区 内的用户设备所对应的认知无线电专用无线网络设备标识 ,并通过用 户专用信令将认知无线电专用无线网络设备标识发送给小区内的用 户设备。
16、 一种用户设备， 其特征在于， 包括：
接收模块，用于通过认知无线电专用无线网络设备标识寻址的信 道接收来自基站设备的频谱切换命令；
切换模块， 用于利用所述频谱切换命令执行频谱切换。
17、 如权利要求 16所述的用户设备， 其特征在于，
所述接收模块，具体用于在每个下行子帧检测信道是否被认知无 线电专用无线网络设备标识寻址， 如果是， 则接收来自基站设备的频 谱切换命令。
18、 如权利要求 16所述的用户设备， 其特征在于， 还包括： 管理模块，用于与所述基站设备约定传输频谱切换命令的认知无 线电专用无线网络设备标识。
19、 如权利要求 18所述的用户设备， 其特征在于，
所述管理模块，具体用于通过以下方式之一与所述基站设备约定 传输频谱切换命令的认知无线电专用无线网络设备标识：
通过协议静态规定认知无线电***预留但未定义的某个无线网 络设备标识为小区内的用户设备所对应的认知无线电专用无线网络 设备标识；
在所述基站设备从非预留且未分配给用户设备的无线网络设备 标识中选择小区内的用户设备所对应的认知无线电专用无线网络设 备标识后，接收所述基站设备通过***信息向小区内的用户设备广播 的认知无线电专用无线网络设备标识；
在所述基站设备从非预留且未分配给用户设备的无线网络设备 标识中选择小区内的用户设备所对应的认知无线电专用无线网络设 备标识后，接收所述基站设备通过用户专用信令所发送的认知无线电 专用无线网络设备标识。
PCT/CN2012/082365 2011-12-08 2012-09-28 一种认知无线电***中的频谱切换方法和设备 WO2013082973A1 (zh)

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Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102523612B (zh) * 2011-12-08 2015-01-14 电信科学技术研究院 一种认知无线电***中的频谱切换方法和设备
CN103067998B (zh) * 2013-01-05 2015-12-23 中国联合网络通信集团有限公司 切换信道的方法与装置
CN103139860B (zh) * 2013-02-04 2016-01-06 重庆邮电大学 一种异构认知无线电网络中基于速度自适应的联合切换方法
CN104125563B (zh) * 2013-04-25 2017-12-29 电信科学技术研究院 认知无线电***中的安全管理方法和设备
CN104581740B (zh) * 2013-10-18 2019-04-19 华为技术有限公司 一种基于认知无线电的频谱切换的方法和设备
CN104735716B (zh) * 2015-01-06 2017-05-10 北京佰才邦技术有限公司 应用在移动通信中的频率调整方法和装置
KR101831574B1 (ko) 2015-01-20 2018-02-22 소니 주식회사 허가 지원 액세스를 제공하기 위한 사용자 장비, 셀룰러 네트워크 노드 및 방법
JP6587259B2 (ja) 2015-04-10 2019-10-09 ゼットティーイー コーポレイション アンライセンス搬送波の競争方法及び装置
CN109392032B (zh) * 2017-08-07 2021-08-06 ***通信有限公司研究院 频点切换处理方法、网络设备、终端和计算机存储介质
CN110662266B (zh) 2018-06-29 2021-02-09 华为技术有限公司 Iab节点的切换方法、iab节点和宿主基站
WO2024011550A1 (zh) * 2022-07-14 2024-01-18 华为技术有限公司 一种通信方法及相关装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007094604A1 (en) * 2006-02-14 2007-08-23 Electronics And Telecommunications Research Institute Method for sensing spectrum and arranging quiet period in cognitive radio system, customer premise equipment, base station and superframe structure using the same
CN101702635A (zh) * 2009-10-28 2010-05-05 北京邮电大学 一种基于认知无线电技术进行频谱切换的方法和***
CN102196452A (zh) * 2010-03-11 2011-09-21 ***通信集团公司 一种频率切换方法和设备
CN102523612A (zh) * 2011-12-08 2012-06-27 电信科学技术研究院 一种认知无线电***中的频谱切换方法和设备

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1058473A1 (en) * 1999-05-26 2000-12-06 Motorola, Inc. Group handover in a cellular communications network
US6556551B1 (en) * 1999-05-27 2003-04-29 Lgc Wireless, Inc. Multi-frequency pilot beacon for CDMA systems
US20040047312A1 (en) 2002-04-29 2004-03-11 Peter Muszynski Method and apparatus for UL interference avoidance by DL measurements and IFHO
EP1620293B1 (en) * 2003-04-29 2009-12-16 Nxp B.V. Electronic communications system
US7813746B2 (en) * 2003-10-24 2010-10-12 Samsung Electronics Co., Ltd. Wireless network using shared traffic channel mode of operation for broadcast services
KR101100157B1 (ko) * 2004-06-08 2011-12-28 엘지전자 주식회사 광대역 무선 접속 시스템에 적용되는 주파수간 핸드오버방법
US8374150B2 (en) 2006-10-03 2013-02-12 Qualcomm Incorporated Re-synchronization of temporary UE IDs in a wireless communication system
US20080200179A1 (en) * 2007-02-16 2008-08-21 Yu-Chih Jen Method and Apparatus for Enhancing System Efficiency in a Wireless Communications System
US20090059868A1 (en) * 2007-08-31 2009-03-05 Samsung Electronics Co., Ltd. Cell Base Station Radio Frequency Channel Selection
US9137745B2 (en) * 2007-10-12 2015-09-15 Qualcomm Incorporated System and method to locate femto cells with passive assistance from a macro cellular wireless network
US9198122B2 (en) * 2007-10-12 2015-11-24 Qualcomm Incorporated Method and system for service redirection background
CN101626607B (zh) * 2008-07-11 2012-06-27 普天信息技术研究院有限公司 无线通信***中中继场景下终端切换的方法和***
US8351920B2 (en) * 2008-08-29 2013-01-08 Spidercloud Wireless, Inc. System and method for femtocell management
KR101527119B1 (ko) * 2008-12-03 2015-06-10 삼성전자주식회사 인지 무선 기반의 통신 시스템에서 동적 자원 교환 장치 및 방법
US8331319B2 (en) * 2009-06-19 2012-12-11 Clearwire Ip Holdings Llc Optimizing handovers in a communication network
KR20110058512A (ko) * 2009-11-26 2011-06-01 삼성전기주식회사 인지 무선 기반 셀룰러 릴레이 통신망에서의 핸드오프 제어 방법
EP2413630B1 (en) * 2010-07-30 2013-07-03 Samsung Electronics Co., Ltd. A wireless network system and a method of providing information in a wireless network system
US9801117B2 (en) * 2011-09-19 2017-10-24 Qualcomm Incorporated Method and apparatus for channel discovery in cognitive radio communications

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007094604A1 (en) * 2006-02-14 2007-08-23 Electronics And Telecommunications Research Institute Method for sensing spectrum and arranging quiet period in cognitive radio system, customer premise equipment, base station and superframe structure using the same
CN101702635A (zh) * 2009-10-28 2010-05-05 北京邮电大学 一种基于认知无线电技术进行频谱切换的方法和***
CN102196452A (zh) * 2010-03-11 2011-09-21 ***通信集团公司 一种频率切换方法和设备
CN102523612A (zh) * 2011-12-08 2012-06-27 电信科学技术研究院 一种认知无线电***中的频谱切换方法和设备

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2790431A4 *

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