CN103491548B

CN103491548B - A kind of frequency spectrum switching method and equipment based on cognitive radio system

Info

Publication number: CN103491548B
Application number: CN201210196139.9A
Authority: CN
Inventors: 白文岭; 李媛媛; 蒋成钢; 杨宇
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2012-06-14
Filing date: 2012-06-14
Publication date: 2017-06-20
Anticipated expiration: 2032-06-14
Also published as: CN103491548A; WO2013185582A1

Abstract

The invention discloses a kind of frequency spectrum switching method based on cognitive radio system and equipment, the method includes：Before frequency spectrum switching, terminal device maintains uplink synchronous with base station equipment in the working frequency points of source；The terminal device is about scheduled on the ascending resource on target operation frequency with the base station equipment；Or, the terminal device receives the ascending resource on target operation frequency that the base station equipment is the terminal device distribution in the working frequency points of source；The terminal device judges whether itself maintains uplink synchronous between the base station equipment after target operation frequency is searched；If it is, the terminal device sends the frequency spectrum handoff completion message for indicating the terminal device to be successfully completed frequency spectrum handoff procedure using the ascending resource to the base station equipment.In the embodiment of the present invention, the frequency spectrum handoff failure probability and service outage duration of CR systems are reduced, improve the Consumer's Experience of CR systems.

Description

Spectrum switching method and device based on cognitive radio system

Technical Field

The invention relates to the technical field of communication, in particular to a frequency spectrum switching method and device based on a cognitive radio system.

Background

Radio communication spectrum is a precious natural resource, the problem of poor spectrum resource is increasingly serious with the rapid development of radio communication technology, in order to alleviate the current situation of spectrum resource shortage, related departments and organizations monitor and research the radio communication spectrum, and find that some frequency bands (such as television frequency bands) are not used in most of time or are not used in most of regions, and some frequency bands have the situation of multi-system and multi-user simultaneous competition, namely the use of the spectrum resource has an imbalance phenomenon.

The CR (Cognitive Radio) concept is generated in this context, and its basic idea is: on the premise of not causing interference to an authorization system, the CR system can dynamically and opportunistically access the white space for communication by monitoring the change of the current wireless environment; when a CR system opportunistically accesses the white space of an authorized system, it is premised on protecting the authorized system traffic from harmful interference from the CR system, which requires: (1) the CR system has the capability of determining the white space spectrum, namely, the white space spectrum of the authorized system frequency band is accurately judged; (2) the CR system has spectrum switching capability, namely when the CR system finds that the authorization system reappears on the currently used white space spectrum (source working frequency point) or the quality of the currently used white space spectrum does not meet the service quality requirement of the CR system, the CR system can quit the currently used white space spectrum in time.

As shown in fig. 1, a flowchart is shown for implementing spectrum handover in a CR system, and through the implementation flow, continuity of a CR system service can be ensured; specifically, when the frequency spectrum is switched, the whole CR system can be switched to other white space frequency spectrums (target working frequency points) to recover the service after exiting from the source working frequency point.

In the prior art, the frequency spectrum switching process is designed based on a static authorized frequency band, and the number of switched terminal devices is generally small for switching scenes among different cells, and the basic process is as follows: the base station equipment sends a frequency spectrum switching command to the terminal equipment and informs the terminal equipment of a target working frequency point and wireless resource allocation thereof; after receiving the frequency spectrum switching command, the terminal equipment leaves the source working frequency point, searches the target working frequency point, executes random access on the target working frequency point after searching the target frequency point, completes uplink synchronization with the base station equipment through the random access process, and sends a frequency spectrum switching completion message to the base station equipment.

In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art:

in the spectrum switching process of the CR system, all RRC (Radio resource control) connected terminal devices in the whole cell need to be switched to a target working frequency point, and many RRC connected terminal devices (which may be more than 1200) are needed, so that by using the existing spectrum switching manner, a large number of terminal devices are concentrated on the target working frequency point in a short time to perform a contention random access process, resulting in a high random access failure probability and a high random access delay, thereby resulting in a high spectrum switching failure probability and a high service interruption time, and affecting user experience of the CR system.

Disclosure of Invention

The embodiment of the invention provides a frequency spectrum switching method and device based on a cognitive radio system, which are used for reducing the frequency spectrum switching failure probability and the service interruption time and improving the user experience of a CR system.

In order to achieve the above object, an embodiment of the present invention provides a method for switching frequency spectrums based on a cognitive radio system, where before the frequency spectrums are switched, a terminal device and a base station device maintain uplink synchronization at a source working frequency point; the method comprises the following steps:

the terminal equipment and the base station equipment agree on uplink resources on a target working frequency point; or, the terminal equipment receives, on a source working frequency point, uplink resources on a target working frequency point allocated to the terminal equipment by the base station equipment;

after searching the target working frequency point, the terminal equipment judges whether uplink synchronization is maintained between the terminal equipment and the base station equipment;

if so, the terminal device sends a spectrum switching completion message for indicating that the terminal device has successfully completed the spectrum switching process to the base station device by using the uplink resource.

The embodiment of the invention provides a frequency spectrum switching method based on a cognitive radio system, wherein before frequency spectrum switching, base station equipment and terminal equipment maintain uplink synchronization on a source working frequency point; the method comprises the following steps:

the base station equipment and the terminal equipment appoint uplink resources on a target working frequency point; or the base station equipment allocates uplink resources on a target working frequency point for the terminal equipment and sends the uplink resources to the terminal equipment on a source working frequency point; the uplink resource is used for enabling the terminal device to send a spectrum switching completion message for indicating that the terminal device has successfully completed a spectrum switching process;

and after the base station equipment recovers the cell at the target working frequency point, the base station equipment receives a frequency spectrum switching completion message sent to the base station equipment by the terminal equipment by utilizing the uplink resource on the target working frequency point.

An embodiment of the present invention provides a terminal device, including:

the management module is used for maintaining uplink synchronization between the terminal equipment and the base station equipment on a source working frequency point before spectrum switching; and appointing uplink resources on a target working frequency point with the base station equipment; or, receiving uplink resources on a target working frequency point allocated to the terminal equipment by the base station equipment on a source working frequency point;

the judging module is used for judging whether uplink synchronization is maintained between the terminal equipment and the base station equipment after the target working frequency point is searched;

and a sending module, configured to send, to the base station device, a spectrum handover completion message for indicating that the terminal device has successfully completed a spectrum handover process by using the uplink resource when the determination result is yes.

An embodiment of the present invention provides a base station device, including:

the management module is used for maintaining the uplink synchronization of the base station equipment and the terminal equipment on the source working frequency point before the frequency spectrum switching; and appointing uplink resources on the target working frequency point with the terminal equipment; or, allocating uplink resources on a target working frequency point for the terminal equipment, and sending the uplink resources to the terminal equipment on a source working frequency point;

the uplink resource is used for enabling the terminal device to send a spectrum switching completion message for indicating that the terminal device has successfully completed a spectrum switching process;

and the receiving module is used for receiving a frequency spectrum switching completion message sent to the base station equipment by the terminal equipment by using the uplink resource on a target working frequency point after the base station equipment recovers the cell at the target working frequency point.

Compared with the prior art, the embodiment of the invention at least has the following advantages: in the embodiment of the invention, in the frequency spectrum switching process, the terminal equipment can directly adopt the uplink sending mode without conflict among the terminal equipment in the pre-allocated cell and the uplink resource to send the frequency spectrum switching completion message to the base station equipment, thereby omitting the random access process in the frequency spectrum switching process, avoiding the random access conflict in the frequency spectrum switching process of the CR system, further reducing the frequency spectrum switching failure probability and the service interruption time of the CR system and improving the user experience of the CR system.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a flowchart illustrating a spectrum handover implementation in a CR system according to the prior art;

fig. 2 is a schematic flowchart of a spectrum handover method based on a cognitive radio system according to an embodiment of the present invention;

fig. 3 is a schematic flowchart of a spectrum handover method based on a cognitive radio system according to a second embodiment of the present invention;

fig. 4 is a schematic flowchart of a spectrum handover method based on a cognitive radio system according to a third embodiment of the present invention;

fig. 5 is a schematic structural diagram of a terminal device according to a fourth embodiment of the present invention;

fig. 6 is a schematic structural diagram of a base station device according to a fifth embodiment of the present invention.

Detailed Description

The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

The embodiment of the invention provides a frequency spectrum switching method based on a cognitive radio system, and the application scenes of the method include but are not limited to: long Term Evolution (LTE), time Division-Synchronous Code Division Multiple Access (TD-SCDMA), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (CDMA), or Code Division Multiple Access (CDMA) -2000 wireless communication systems using CR technology; as shown in fig. 2, the method comprises the steps of:

step 201, before the spectrum switching, the base station device (the base station device in the CR system) and the terminal device (the terminal device in the CR system) maintain uplink synchronization on the source working frequency point.

In a preferred embodiment of the present invention, in order to maintain uplink synchronization between the base station device and the terminal device at the source operating frequency point, the following steps are performed: the base station equipment determines whether the terminal equipment and the base station equipment maintain uplink synchronization on a source working frequency point by detecting an uplink signal sent by the terminal equipment; if the synchronization deviation exists, the base station equipment sends a timing adjustment command to the terminal equipment so as to indicate that the terminal equipment needs to adjust an uplink timing synchronization point through the timing adjustment command; and: when receiving a timing adjustment command from the base station equipment, the terminal equipment adjusts an uplink timing synchronization point, namely adjusts the timing synchronization of an uplink channel/signal in uplink transmission; after the base station device and the terminal device perform the above processing, the base station device and the terminal device can maintain uplink synchronization at the source working frequency point.

In an LTE system, base station equipment determines whether the terminal equipment maintains uplink synchronization with the base station equipment on a source working frequency point by detecting an uplink signal sent by the terminal equipment; if the synchronization deviation exists, sending a TAC (timing advanced Command) to the terminal equipment so as to indicate that the terminal equipment needs to adjust the uplink timing synchronization point through the TAC; and the terminal device adjusts the Uplink timing synchronization point when receiving the TAC, that is, adjusts the timing synchronization of the Uplink Channel/Signal in Uplink transmission, for example, adjusts the timing synchronization of the PUSCH (Physical Uplink shared Channel), the PUCCH (Physical Uplink Control Channel), the SRS (Sounding Reference Signal), and the like in Uplink transmission; based on this, the base station device and the terminal device can maintain uplink synchronization on the source working frequency point.

202, the base station equipment and the terminal equipment appoint uplink resources on a target working frequency point; or the base station equipment allocates the uplink resource on the target working frequency point for the terminal equipment, sends the uplink resource to the terminal equipment on the source working frequency point, and receives the uplink resource on the source working frequency point by the terminal equipment.

The uplink resource is used for enabling the terminal device to send a spectrum handover completion message for indicating that the terminal device has successfully completed a spectrum handover process, and the uplink resource may be a resource such as a time-frequency code, and the uplink resource is orthogonal and has no conflict between terminal devices in a cell.

In the embodiment of the present invention, the uplink resources agreed on the target working frequency point by the base station device and the terminal device include, but are not limited to: the base station equipment and the terminal equipment statically stipulate uplink resources on a source working frequency point as uplink resources on a target working frequency point through a protocol; for example, an uplink resource engagement method of a communication system (such as TD-SCDMA system) defining a dedicated channel specifically includes: the special channel (such as uplink resources such as code channel/time slot) on the source working frequency point is statically specified by a protocol to be the special channel on the target working frequency point, and the terminal equipment can send a spectrum switching completion message by using the special channel, so that the system implementation complexity can be reduced, and the signaling overhead can be saved.

In the embodiment of the present invention, the base station device sends the uplink resource to the terminal device on the source working frequency point, which includes but is not limited to: before the frequency spectrum is switched, the base station equipment allocates uplink resources for the terminal equipment in a dynamic configuration mode, and sends air interface messages such as special signaling or system broadcast messages to the terminal equipment on a source working frequency point, wherein the air interface messages such as the special signaling or the system broadcast messages carry the uplink resources allocated for the terminal equipment by the base station equipment on a target working frequency point; or, when the authorized user reappears on the source working frequency point or the channel quality of the source working frequency point is reduced, the base station equipment sends a spectrum switching command to the terminal equipment, and the spectrum switching command comprises the target working frequency point and/or the wireless resource configuration information and the uplink resource on the target working frequency point, which is allocated to the terminal equipment by the base station equipment.

In a preferred implementation manner of the embodiment of the present invention, the base station device may further agree with the terminal device about an uplink resource and an uplink transmission manner on the target working frequency point; or, the base station device may also allocate uplink resources and an uplink transmission mode on the target working frequency point for the terminal device, and transmit the uplink resources and the uplink transmission mode to the terminal device on the source working frequency point; the uplink transmission mode includes, but is not limited to: modulation and coding scheme, HARQ (hybrid auto Repeat request) information, power control information, and the like.

In the embodiment of the present invention, the base station device and the terminal device agree on the uplink resource and the uplink transmission mode on the target working frequency point, which include but are not limited to: the base station equipment and the terminal equipment statically stipulate an uplink resource and an uplink transmission mode on a source working frequency point as an uplink resource and an uplink transmission mode on a target working frequency point through a protocol; for example, an agreed mode of uplink resource and uplink transmission mode of a communication system (such as TD-SCDMA system) defining a dedicated channel is as follows: the dedicated channel (such as uplink resources such as code channel/time slot) and the uplink transmission mode on the source working frequency point are statically specified by a protocol, namely the dedicated channel and the uplink transmission mode on the target working frequency point are defined, and the terminal equipment can transmit the frequency spectrum switching completion message by using the dedicated channel and the uplink transmission mode, so that the system implementation complexity can be reduced, and the signaling overhead can be saved.

In the embodiment of the present invention, the base station device sends the uplink resource and the uplink sending mode to the terminal device on the source working frequency point, which includes but is not limited to: before the frequency spectrum is switched, the base station equipment allocates uplink resources and an uplink sending mode for the terminal equipment in a dynamic configuration mode, and sends air interface messages such as special signaling or system broadcast messages to the terminal equipment on a source working frequency point, wherein the air interface messages such as the special signaling or the system broadcast messages carry the uplink resources and the uplink sending mode, which are allocated for the terminal equipment by the base station equipment, on a target working frequency point; or, when the authorized user reappears on the source working frequency point or the channel quality of the source working frequency point is reduced, the base station equipment sends a spectrum switching command to the terminal equipment, and the spectrum switching command comprises the target working frequency point and/or the wireless resource configuration information, and the uplink resource and the uplink sending mode on the target working frequency point, which are allocated to the terminal equipment by the base station equipment.

It should be noted that, when the uplink resource is agreed or notified before the spectrum is switched, there is no precedence relationship between step 201 and step 202, and step 202 may also be executed before step 201; when the uplink resources are notified by the spectrum switching command, step 202 is executed after step 201, and the procedure is described in the following steps.

Step 203, when the base station device finds that the authorized user reappears on the source working frequency point or the channel quality of the source working frequency point is reduced, the base station device decides that a frequency spectrum switching process needs to be executed, generates a frequency spectrum switching command and sends the frequency spectrum switching command to the terminal device; the frequency spectrum switching command at least comprises target working frequency points and/or wireless resource configuration information.

In a preferred implementation manner of the embodiment of the present invention, the spectrum switching command may further carry indication information indicating whether uplink synchronization is maintained between the base station device and the terminal device; and the determining mode whether to maintain uplink synchronization between the base station equipment and the terminal equipment comprises the following steps: the base station equipment judges whether the time length between the moment when the terminal equipment sends the frequency spectrum switching completion message and the moment when the timing adjustment command is sent for the last time does not exceed a specified time threshold (can be set according to practical experience), and whether the central frequency interval between the target working frequency point and the source working frequency point does not exceed a specified frequency threshold (can be set according to practical experience); if so, the base station equipment determines that the uplink synchronization is maintained between the base station equipment and the terminal equipment; if not, the base station equipment determines that the uplink synchronization between the base station equipment and the terminal equipment is not maintained.

In a preferred implementation manner of the embodiment of the present invention, the spectrum switching command may further carry uplink resources on the target working frequency point allocated by the base station device for the terminal device; or carrying the uplink resource and the uplink sending mode which are distributed by the base station equipment for the terminal equipment on the target working frequency point.

And step 204, after the base station equipment sends the spectrum switching command to the terminal equipment, stopping signal transceiving at the source working frequency point.

In step 205, after the base station device stops receiving and transmitting signals at the source working frequency point, the cell is recovered by using the target working frequency point.

Step 206, after the terminal device receives the spectrum switching command, if the uplink resource is carried in the spectrum switching command, the terminal device stores or updates the uplink resource; that is, if there is no uplink resource currently, the uplink resource is directly stored; and if the uplink resources exist currently, updating the existing uplink resources.

In a preferred embodiment of the present invention, after receiving a spectrum switching command, if the spectrum switching command carries an uplink resource and an uplink transmission mode, the terminal device needs to store or update the uplink resource and the uplink transmission mode; if there is no uplink resource and uplink transmission mode, directly storing the uplink resource and uplink transmission mode; and if the uplink resources and the uplink sending mode exist currently, updating the existing uplink resources and the existing uplink sending mode.

Step 207, after receiving the spectrum switching command, the terminal device leaves the source working frequency point, and executes downlink synchronization with the base station device on the target working frequency point, that is, searches the target working frequency point.

It should be noted that there is no precedence relationship between step 206 and step 207, and step 207 may also be executed before step 206; step 206 and step 207 have no precedence relationship with step 204 and step 205, for example, step 207 may be located before step 204, or may be located before step 205, and step 206 may be located before step 204, or may be located before step 205.

Step 208, after searching the target working frequency point, the terminal equipment judges whether uplink synchronization is maintained between itself and the base station equipment; if so, go to step 209; if not, the uplink synchronization fails, and at this time, the existing spectrum switching mode needs to be adopted, which is not described again.

In the embodiment of the present invention, the terminal device determines whether uplink synchronization is maintained between itself and the base station device at the target working frequency point, including but not limited to the following modes:

the method comprises the steps that a terminal device judges whether the time length between the current time or the time when a self frequency spectrum switching completion message is sent and the time when uplink timing synchronization point adjustment is carried out last time does not exceed a specified time threshold (set according to practical experience and can be the same as a specified time threshold value adopted by a base station device), and whether the central frequency interval between a target working frequency point and a source working frequency point does not exceed a specified frequency threshold (set according to practical experience and can be the same as a specified frequency threshold value adopted by the base station device); if so, the terminal equipment determines that the uplink synchronization is maintained between the terminal equipment and the base station equipment; if not, the terminal equipment determines that the uplink synchronization between the terminal equipment and the base station equipment is not maintained.

And secondly, when the frequency spectrum switching command carries indication information of whether the uplink synchronization between the base station equipment and the terminal equipment is maintained, the terminal equipment obtains the indication information of whether the uplink synchronization is maintained between the base station equipment and the terminal equipment from the frequency spectrum switching command from the base station equipment, and determines whether the uplink synchronization is maintained or not maintained between the terminal equipment and the base station equipment by using the indication information.

Step 209, the terminal device sends a spectrum handover complete message for indicating that the terminal device has successfully completed the spectrum handover procedure to the base station device by using the uplink resource.

In the embodiment of the present invention, the uplink resource is previously stored, and the manner for the terminal device to obtain the uplink resource includes, but is not limited to: the terminal equipment and the base station equipment statically stipulate uplink resources on a source working frequency point as uplink resources on a target working frequency point through a protocol; or before the frequency spectrum is switched, the terminal equipment receives a special signaling or system broadcast message from the base station equipment on the source working frequency point, and the special signaling or system broadcast message carries uplink resources which are distributed for the terminal equipment by the base station equipment on the target working frequency point; or the terminal equipment receives a spectrum switching command from the base station equipment, and the spectrum switching command instructs the base station equipment to allocate uplink resources on the target working frequency point to the terminal equipment.

In a preferred embodiment of the present invention, the terminal device specifically uses an uplink resource and an uplink transmission mode to transmit a spectrum handover completion message to the base station device, where the uplink transmission mode is previously stored, and the mode for the terminal device to obtain the uplink transmission mode includes, but is not limited to: the terminal equipment and the base station equipment statically stipulate an uplink transmission mode on a source working frequency point as an uplink transmission mode on a target working frequency point through a protocol; or before the frequency spectrum is switched, the terminal equipment receives a special signaling or system broadcast message from the base station equipment on the source working frequency point, and the special signaling or system broadcast message carries an uplink sending mode which is distributed for the terminal equipment by the base station equipment on the target working frequency point; or the terminal equipment receives a spectrum switching command from the base station equipment, and the spectrum switching command comprises an uplink sending mode which is distributed by the base station equipment for the terminal equipment on the target working frequency point.

Further, after the terminal device sends the spectrum switching completion message, and after the base station device recovers the cell at the target working frequency point, the spectrum switching completion message sent by the terminal device to the base station device by using the uplink resource and the uplink sending mode can be received at the target working frequency point.

In summary, in the embodiment of the present invention, in the spectrum handover process, the terminal device may directly transmit the spectrum handover completion message to the base station device by using the uplink transmission mode and the uplink resource without collision between the terminal devices in the pre-allocated cells, so that the random access process is omitted in the spectrum handover process, the random access collision in the spectrum handover process of the CR system is avoided, the spectrum handover failure probability and the service interruption time of the CR system are reduced, and the user experience of the CR system is improved.

Example two

The second embodiment of the invention provides a frequency spectrum switching method based on a cognitive radio system, which is used for explaining the processing of base station equipment in detail; as shown in fig. 3, the method comprises the steps of:

step 301, before the spectrum switching, the base station device (the base station device in the CR system) maintains uplink synchronization with the terminal device (the terminal device in the CR system) at the source working frequency point.

In a preferred implementation manner of the embodiment of the present invention, a base station device determines whether a terminal device and the base station device maintain uplink synchronization at a source working frequency point by detecting an uplink signal sent by the terminal device; and if the synchronization deviation exists, the base station equipment sends a timing adjustment command to the terminal equipment so as to indicate that the terminal equipment needs to adjust an uplink timing synchronization point through the timing adjustment command, so that the base station equipment is ensured to maintain the uplink synchronization with the terminal equipment on the source working frequency point.

302, the base station device and the terminal device agree on the uplink resource on the target working frequency point (for example, the base station device and the terminal device statically stipulate the uplink resource on the source working frequency point as the uplink resource on the target working frequency point through a protocol); or, before the spectrum switching, the base station device allocates the uplink resource on the target working frequency point to the terminal device in a dynamic configuration mode, and notifies the uplink resource on the target working frequency point to the terminal device on the source working frequency point through a dedicated signaling or a system broadcast message and the like.

In a preferred embodiment of the present invention, the base station device may further agree with the terminal device about an uplink resource and an uplink transmission mode on the target working frequency point (for example, the base station device and the terminal device statically stipulate the uplink resource and the uplink transmission mode on the source working frequency point as the uplink resource and the uplink transmission mode on the target working frequency point through a protocol); or, before the spectrum switching, the base station device allocates the uplink resource and the uplink transmission mode on the target working frequency point to the terminal device in a dynamic configuration mode, and notifies the uplink resource and the uplink transmission mode on the target working frequency point to the terminal device through a dedicated signaling or a system broadcast message and the like on the source working frequency point. The uplink transmission mode includes, but is not limited to: modulation and coding scheme, HARQ information, power control information, and the like.

Step 303, when the base station device finds that the authorized user reappears at the source working frequency point (current working frequency point) or the channel quality of the source working frequency point is reduced, the base station device decides that a spectrum switching process needs to be executed, generates a spectrum switching command, and sends the spectrum switching command to the terminal device; the frequency spectrum switching command at least comprises target working frequency points and/or wireless resource configuration information.

In a preferred implementation manner of the embodiment of the present invention, the spectrum switching command may further carry indication information indicating whether uplink synchronization is maintained between the base station device and the terminal device; and the determining method of whether to maintain uplink synchronization between the base station device and the terminal device includes, but is not limited to: the base station equipment judges whether the time length between the moment when the terminal equipment sends the frequency spectrum switching completion message and the moment when the timing adjustment command is sent for the last time does not exceed a specified time threshold (can be set according to practical experience), and whether the central frequency interval between the target working frequency point and the source working frequency point does not exceed a specified frequency threshold (can be set according to practical experience); if so, the base station equipment determines that the uplink synchronization is maintained between the base station equipment and the terminal equipment; if not, the base station equipment determines that the uplink synchronization between the base station equipment and the terminal equipment is not maintained.

In a preferred implementation manner of the embodiment of the present invention, the spectrum switching command may further carry an uplink resource allocated by the base station device to the terminal device on the target working frequency point, and an obtaining manner of the uplink resource may be configured for the base station device to the terminal device; or carrying the uplink resource and the uplink transmission mode on the target working frequency point allocated by the base station equipment for the terminal equipment, wherein the acquisition mode of the uplink resource and the uplink transmission mode can be configured for the base station equipment for the terminal equipment.

It should be noted that step 302 is an optional step, and if step 302 is not executed, in this step 303, uplink resources on the target working frequency point need to be carried in the spectrum switching command; or, the uplink resource and the uplink transmission mode on the target working frequency point.

And step 304, after the base station equipment sends the spectrum switching command to the terminal equipment, stopping signal transceiving at the source working frequency point.

Step 305, after the base station equipment stops the signal transceiving at the source working frequency point, the cell is recovered by using the target working frequency point.

Step 306, the base station device receives, on the target working frequency point, a spectrum handover completion message (used to indicate that the terminal device has successfully completed the spectrum handover process) sent by the terminal device to the base station device by using the uplink resource. In a preferred embodiment of the present invention, the base station device receives, at the target operating frequency point, a spectrum handover completion message sent by the terminal device to the base station device by using an uplink resource and an uplink sending mode.

EXAMPLE III

The third embodiment of the invention provides a frequency spectrum switching method based on a cognitive radio system, which is used for explaining the processing of terminal equipment in detail; as shown in fig. 4, the method comprises the steps of:

in step 401, before the spectrum switching, the terminal device (terminal device in the CR system) maintains uplink synchronization with the base station device (base station device in the CR system) at the source working frequency point.

In a preferred implementation manner of the embodiment of the present invention, the terminal device detects a timing adjustment command issued by the base station device, and adjusts the uplink timing synchronization point according to the timing adjustment command, that is, adjusts the timing synchronization of the uplink channel/signal in the uplink transmission of the terminal device, so as to ensure that the terminal device maintains the uplink synchronization with the base station device at the source operating frequency point.

Step 402, the terminal device and the base station device agree on the uplink resource on the target working frequency point (for example, the uplink resource on the source working frequency point is statically specified by the protocol between the terminal device and the base station device as the uplink resource on the target working frequency point); or before the spectrum switching, the terminal device receives a dedicated signaling or a system broadcast message from the base station device on the source working frequency point, and the dedicated signaling or the system broadcast message carries the uplink resource allocated by the base station device for the terminal device on the target working frequency point.

In a preferred embodiment of the present invention, the terminal device may further agree with the base station device about an uplink resource and an uplink transmission mode on the target working frequency point (for example, the uplink resource and the uplink transmission mode on the source working frequency point are statically specified by a protocol between the terminal device and the base station device as the uplink resource and the uplink transmission mode on the target working frequency point); or before the spectrum switching, the terminal device receives a dedicated signaling or a system broadcast message from the base station device at the source working frequency point, and the dedicated signaling or the system broadcast message carries the uplink resource and the uplink sending mode, which are allocated to the terminal device by the base station device, at the target working frequency point. The uplink transmission mode includes, but is not limited to: modulation and coding scheme, HARQ information, power control information, and the like.

Step 403, the terminal device receives a spectrum switching command from the base station device; the frequency spectrum switching command at least comprises target working frequency points and/or wireless resource configuration information.

In an optional implementation manner of the embodiment of the present invention, the spectrum switching command may further carry indication information indicating whether uplink synchronization is maintained between the base station device and the terminal device.

In an optional implementation manner of the embodiment of the present invention, the spectrum switching command may further carry uplink resources on the target working frequency point, which are allocated to the terminal device by the base station device; or carrying the uplink resource and the uplink sending mode on the target working frequency point allocated by the base station equipment for the terminal equipment.

Step 404, after the terminal device receives the spectrum switching command, if the spectrum switching command carries uplink resources, the terminal device needs to store or update the uplink resources (i.e. if there is no uplink resource currently, the uplink resources are directly stored; if there is uplink resources currently, the existing uplink resources are updated), and step 405 is executed; otherwise, step 405 is performed directly.

Step 405, after receiving the spectrum switching command, the terminal device leaves the source working frequency point, and executes downlink synchronization with the base station device on the target working frequency point, that is, searches the target working frequency point.

Step 406, after searching the target working frequency point, the terminal device determines whether to maintain uplink synchronization with the base station device; if so, go to step 407; if not, the uplink synchronization fails, and at this time, the existing spectrum switching mode needs to be adopted, which is not described again.

the method comprises the steps that firstly, a terminal device judges whether the time length between the current time or the time when the terminal device sends a frequency spectrum switching completion message and the time when the uplink timing synchronization point is adjusted at the latest time does not exceed a specified time threshold (set according to actual experience), and whether the central frequency interval between a target working frequency point and a source working frequency point does not exceed a specified frequency threshold (set according to actual experience); if so, the terminal equipment determines that the uplink synchronization is maintained between the terminal equipment and the base station equipment; if not, the terminal equipment determines that the uplink synchronization between the terminal equipment and the base station equipment is not maintained.

Step 407, the terminal device sends a spectrum handover complete message for indicating that the terminal device has successfully completed the spectrum handover procedure to the base station device by using the uplink resource.

In a preferred embodiment of the present invention, the terminal device specifically uses the uplink resource and the uplink transmission mode to transmit the spectrum handover completion message to the base station device.

Example four

Based on the same inventive concept as the above method, an embodiment of the present invention further provides a terminal device, as shown in fig. 5, where the terminal device includes:

the management module 11 is configured to maintain uplink synchronization between the terminal device and the base station device at a source working frequency point before spectrum switching; and appointing uplink resources on a target working frequency point with the base station equipment; or, receiving uplink resources on a target working frequency point allocated to the terminal equipment by the base station equipment on a source working frequency point;

a determining module 12, configured to determine whether uplink synchronization is maintained between the terminal device and the base station device after a target working frequency point is searched;

a sending module 13, configured to send, to the base station device, a spectrum handover complete message for indicating that the terminal device has successfully completed a spectrum handover process by using the uplink resource when the determination result is yes.

The management module 11 is specifically configured to statically stipulate, with the base station device through a protocol, that the uplink resource on the source working frequency point is an uplink resource on the target working frequency point.

The management module 11 is specifically configured to receive, before spectrum switching, a dedicated signaling or a system broadcast message from the base station device at a source working frequency point, where the dedicated signaling or the system broadcast message carries uplink resources, which are allocated by the base station device for the terminal device, at a target working frequency point; or, when the authorized user reappears on the source working frequency point or the channel quality of the source working frequency point is reduced, receiving a spectrum switching command from the base station equipment, where the spectrum switching command includes a target working frequency point and/or wireless resource configuration information, and an uplink resource on the target working frequency point allocated to the terminal equipment by the base station equipment.

The management module 11 is further configured to agree with the base station device about an uplink transmission mode on a target working frequency point; or, receiving an uplink sending mode on a target working frequency point allocated to the terminal equipment by the base station equipment on a source working frequency point;

the sending module 13 is specifically configured to send a spectrum handover completion message to the base station device by using the uplink resource and the uplink sending mode.

The management module 11 is further configured to statically specify, with the base station device, that an uplink transmission mode on a source working frequency point is an uplink transmission mode on a target working frequency point through a protocol; or,

before the frequency spectrum is switched, receiving a special signaling or system broadcast message from the base station equipment on a source working frequency point, wherein the special signaling or system broadcast message carries an uplink sending mode which is distributed by the base station equipment for the terminal equipment on a target working frequency point; or,

and when the authorized user reappears on the source working frequency point or the channel quality of the source working frequency point is reduced, receiving a frequency spectrum switching command from the base station equipment, wherein the frequency spectrum switching command comprises a target working frequency point and/or wireless resource configuration information and an uplink sending mode which is distributed by the base station equipment for the terminal equipment and is on the target working frequency point.

The determining module 12 is specifically configured to determine whether a time length between a current time or a time when the terminal device sends the spectrum handover completion message and a time when the uplink timing synchronization point adjustment is performed last time does not exceed a specified time threshold, and whether a center frequency interval between the target working frequency point and the source working frequency point does not exceed a specified frequency threshold; if so, determining that the uplink synchronization is maintained between the terminal equipment and the base station equipment; if not, determining that the uplink synchronization between the terminal equipment and the base station equipment is not maintained; or when the authorized user reappears on the source working frequency point or the channel quality of the source working frequency point is reduced, receiving a frequency spectrum switching command from the base station equipment, wherein the frequency spectrum switching command comprises target working frequency point and/or wireless resource configuration information and indication information of whether uplink synchronization is maintained between the base station equipment and the terminal equipment; and determining that the uplink synchronization is maintained or not maintained between the terminal equipment and the base station equipment by using the indication information carried in the frequency spectrum switching command.

The modules of the device can be integrated into a whole or can be separately deployed. The modules can be combined into one module, and can also be further split into a plurality of sub-modules.

EXAMPLE five

Based on the same inventive concept as the above method, an embodiment of the present invention further provides a base station apparatus, as shown in fig. 6, where the base station apparatus includes:

a management module 21, configured to maintain uplink synchronization between the base station device and the terminal device at a source working frequency point before spectrum switching; and appointing uplink resources on the target working frequency point with the terminal equipment; or, allocating uplink resources on a target working frequency point for the terminal equipment, and sending the uplink resources to the terminal equipment on a source working frequency point; the uplink resource is used for enabling the terminal device to send a spectrum switching completion message for indicating that the terminal device has successfully completed a spectrum switching process;

a receiving module 22, configured to receive, at a target working frequency point, a spectrum handover completion message sent by the terminal device to the base station device by using the uplink resource after the base station device recovers a cell at the target working frequency point.

The management module 21 is specifically configured to statically stipulate, with the terminal device through a protocol, that the uplink resource on the source working frequency point is an uplink resource on the target working frequency point.

The management module 21 is specifically configured to send a dedicated signaling or a system broadcast message to the terminal device on a source working frequency point before spectrum switching, where the dedicated signaling or the system broadcast message carries uplink resources, which are allocated to the terminal device by the base station device, on a target working frequency point; or when the authorized user reappears on the source working frequency point or the channel quality of the source working frequency point is reduced, sending a frequency spectrum switching command to the terminal equipment, wherein the frequency spectrum switching command comprises a target working frequency point and/or wireless resource configuration information and uplink resources, distributed by the base station equipment for the terminal equipment, on the target working frequency point.

The management module 21 is further configured to agree with the terminal device about an uplink transmission mode on a target working frequency point; or, distributing an uplink transmission mode on a target working frequency point for the terminal equipment, and transmitting the uplink transmission mode to the terminal equipment on a source working frequency point;

the receiving module 22 is specifically configured to receive, at a target working frequency point, a spectrum handover completion message that is sent by the terminal device to the base station device by using the uplink resource and the uplink sending mode.

The management module 21 is further configured to statically specify, with the terminal device, that an uplink transmission mode on a source working frequency is an uplink transmission mode on a target working frequency through a protocol; or,

before the frequency spectrum is switched, a special signaling or a system broadcast message is sent to the terminal equipment on a source working frequency point, and the special signaling or the system broadcast message carries an uplink sending mode which is distributed for the terminal equipment by the base station equipment on a target working frequency point; or,

and when the authorized user reappears on the source working frequency point or the channel quality of the source working frequency point is reduced, sending a frequency spectrum switching command to the terminal equipment, wherein the frequency spectrum switching command comprises a target working frequency point and/or wireless resource configuration information and an uplink sending mode on the target working frequency point, which is distributed to the terminal equipment by the base station equipment.

The management module 21 is further configured to generate a spectrum switching command when an authorized user reappears at the source working frequency point or the channel quality of the source working frequency point is reduced, and send the spectrum switching command to the terminal device; the frequency spectrum switching command comprises target working frequency points and/or wireless resource configuration information and indication information of whether uplink synchronization is maintained between the base station equipment and the terminal equipment.

The management module 21 is further configured to determine whether uplink synchronization is maintained between the base station device and the terminal device by: judging whether the time length between the moment when the terminal equipment sends the frequency spectrum switching completion message and the moment when the terminal equipment sends the timing adjustment command at the latest time does not exceed a specified time threshold or not, and whether the central frequency interval between the target working frequency point and the source working frequency point does not exceed a specified frequency threshold or not; if so, determining that the uplink synchronization is maintained between the base station equipment and the terminal equipment; and if not, determining that the uplink synchronization between the base station equipment and the terminal equipment is not maintained.

Through the above description of the embodiments, those skilled in the art will clearly understand that the present invention may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.

Those skilled in the art will appreciate that the drawings are merely schematic representations of one preferred embodiment and that the blocks or flow diagrams in the drawings are not necessarily required to practice the present invention.

Those skilled in the art will appreciate that the modules in the devices in the embodiments may be distributed in the devices in the embodiments according to the description of the embodiments, and may be correspondingly changed in one or more devices different from the embodiments. The modules of the above embodiments may be combined into one module, or further split into multiple sub-modules.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

The above disclosure is only for a few specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims

1. A frequency spectrum switching method based on a cognitive radio system is characterized in that before frequency spectrum switching, a terminal device and a base station device maintain uplink synchronization on a source working frequency point; the method comprises the following steps:

if so, the terminal equipment sends a spectrum switching completion message for indicating that the terminal equipment has successfully completed the spectrum switching process to the base station equipment by using the uplink resource;

the method further comprises:

the terminal equipment and the base station equipment agree on an uplink transmission mode on a target working frequency point; or, the terminal equipment receives an uplink sending mode on a target working frequency point allocated to the terminal equipment by the base station equipment on a source working frequency point; and the terminal equipment transmits a frequency spectrum switching completion message to the base station equipment by using the uplink resources and the uplink transmission mode.

2. The method of claim 1, wherein the step of the terminal device and the base station device agreeing on the uplink resource on the target operating frequency point includes:

and the terminal equipment and the base station equipment statically stipulate uplink resources on the source working frequency point as uplink resources on the target working frequency point through a protocol.

3. The method of claim 1, wherein the receiving, by the terminal device, the uplink resource on the target operating frequency point allocated to the terminal device by the base station device on the source operating frequency point comprises:

before the frequency spectrum is switched, the terminal equipment receives a special signaling or system broadcast message from the base station equipment on a source working frequency point, and the special signaling or system broadcast message carries uplink resources which are distributed for the terminal equipment by the base station equipment on a target working frequency point; or,

when the authorized user reappears on the source working frequency point or the channel quality of the source working frequency point is reduced, the terminal equipment receives a frequency spectrum switching command from the base station equipment, wherein the frequency spectrum switching command comprises a target working frequency point and/or wireless resource configuration information and uplink resources, distributed for the terminal equipment by the base station equipment, on the target working frequency point.

4. The method of claim 1, wherein the step of the terminal device and the base station device agreeing on an uplink transmission mode on a target operating frequency point includes:

the terminal equipment and the base station equipment statically stipulate an uplink transmission mode on a source working frequency point as an uplink transmission mode on a target working frequency point through a protocol;

the method for the terminal equipment to receive the uplink sending mode on the target working frequency point allocated to the terminal equipment by the base station equipment on the source working frequency point comprises the following steps:

before the frequency spectrum is switched, the terminal equipment receives a special signaling or system broadcast message from the base station equipment on a source working frequency point, and the special signaling or system broadcast message carries an uplink sending mode which is distributed for the terminal equipment by the base station equipment on a target working frequency point; or,

when the authorized user reappears on the source working frequency point or the channel quality of the source working frequency point is reduced, the terminal equipment receives a frequency spectrum switching command from the base station equipment, wherein the frequency spectrum switching command comprises a target working frequency point and/or wireless resource configuration information and an uplink sending mode which is distributed by the base station equipment for the terminal equipment and is on the target working frequency point.

5. The method of claim 1, wherein the determining, by the terminal device, whether uplink synchronization is maintained between the terminal device and the base station device comprises:

the terminal equipment judges whether the time length between the current time or the time when the terminal equipment sends the frequency spectrum switching completion message and the time when the uplink timing synchronization point adjustment is carried out the latest time does not exceed a specified time threshold, and whether the central frequency interval between the target working frequency point and the source working frequency point does not exceed a specified frequency threshold; if so, determining that the uplink synchronization is maintained between the base station equipment and the base station equipment; if not, determining that the uplink synchronization between the base station equipment and the base station equipment is not maintained; or,

when an authorized user reappears on a source working frequency point or the channel quality of the source working frequency point is reduced, the terminal equipment receives a frequency spectrum switching command from the base station equipment, wherein the frequency spectrum switching command comprises target working frequency points and/or wireless resource configuration information and indication information of whether uplink synchronization is maintained between the base station equipment and the terminal equipment; and the terminal equipment determines that the uplink synchronization is maintained or not maintained between the terminal equipment and the base station equipment by using the indication information carried in the frequency spectrum switching command.

6. A frequency spectrum switching method based on a cognitive radio system is characterized in that before frequency spectrum switching, base station equipment and terminal equipment maintain uplink synchronization on a source working frequency point; the method comprises the following steps:

after the base station equipment recovers the cell at the target working frequency point, the base station equipment receives a frequency spectrum switching completion message sent to the base station equipment by the terminal equipment by utilizing the uplink resource at the target working frequency point;

the method further comprises:

the base station equipment and the terminal equipment agree on an uplink transmission mode on a target working frequency point; or the base station equipment allocates an uplink sending mode on a target working frequency point for the terminal equipment and sends the uplink sending mode to the terminal equipment on a source working frequency point; and the base station equipment receives the frequency spectrum switching completion message sent to the base station equipment by the terminal equipment by utilizing the uplink resource and the uplink sending mode on a target working frequency point.

7. The method as claimed in claim 6, wherein the step of the base station device and the terminal device appointing uplink resources on a target operating frequency point includes:

and the base station equipment and the terminal equipment statically stipulate uplink resources on the source working frequency point as uplink resources on the target working frequency point through a protocol.

8. The method of claim 6, wherein the base station device sends the uplink resource to the terminal device on a source operating frequency point, and the method includes:

before the frequency spectrum is switched, the base station equipment sends a special signaling or a system broadcast message to the terminal equipment on a source working frequency point, and the special signaling or the system broadcast message carries uplink resources which are distributed for the terminal equipment by the base station equipment on a target working frequency point; or,

when the authorized user reappears on the source working frequency point or the channel quality of the source working frequency point is reduced, the base station equipment sends a frequency spectrum switching command to the terminal equipment, wherein the frequency spectrum switching command comprises a target working frequency point and/or wireless resource configuration information and uplink resources, distributed for the terminal equipment, on the target working frequency point by the base station equipment.

9. The method as claimed in claim 6, wherein the step of the base station device and the terminal device agreeing on the uplink transmission mode on the target working frequency point comprises:

the base station equipment and the terminal equipment statically stipulate an uplink transmission mode on a source working frequency point as an uplink transmission mode on a target working frequency point through a protocol;

the base station equipment sends the uplink sending mode to the terminal equipment on a source working frequency point, and the method comprises the following steps:

before the frequency spectrum is switched, the base station equipment sends a special signaling or a system broadcast message to the terminal equipment on a source working frequency point, and the special signaling or the system broadcast message carries an uplink sending mode which is distributed for the terminal equipment by the base station equipment on a target working frequency point; or,

when the authorized user reappears on the source working frequency point or the channel quality of the source working frequency point is reduced, the base station equipment sends a frequency spectrum switching command to the terminal equipment, wherein the frequency spectrum switching command comprises a target working frequency point and/or wireless resource configuration information and an uplink sending mode on the target working frequency point, which is distributed to the terminal equipment by the base station equipment.

10. The method of claim 6, wherein the method further comprises:

when the authorized user reappears on the source working frequency point or the channel quality of the source working frequency point is reduced, the base station equipment generates a frequency spectrum switching command and sends the frequency spectrum switching command to the terminal equipment; the frequency spectrum switching command comprises target working frequency points and/or wireless resource configuration information and indication information of whether uplink synchronization is maintained between the base station equipment and the terminal equipment.

11. The method of claim 10, wherein the determining whether uplink synchronization is maintained between the base station device and the terminal device comprises:

the base station equipment judges whether the time length between the moment when the terminal equipment sends the frequency spectrum switching completion message and the moment when the timing adjustment command is sent for the last time does not exceed a specified time threshold or not, and whether the central frequency interval between the target working frequency point and the source working frequency point does not exceed a specified frequency threshold or not; if so, the base station equipment determines that the uplink synchronization is maintained between the base station equipment and the terminal equipment; and if not, the base station equipment determines that the uplink synchronization between the base station equipment and the terminal equipment is not maintained.

12. A terminal device, comprising:

a sending module, configured to send, to the base station device, a spectrum handover completion message for indicating that the terminal device has successfully completed a spectrum handover process by using the uplink resource when the determination result is yes;

the management module is also used for appointing an uplink transmission mode on a target working frequency point with the base station equipment; or, receiving an uplink sending mode on a target working frequency point allocated to the terminal equipment by the base station equipment on a source working frequency point;

the sending module is specifically configured to send a spectrum handover completion message to the base station device by using the uplink resource and the uplink sending mode.

13. The terminal device of claim 12,

the management module is specifically configured to statically stipulate, with the base station device through a protocol, that the uplink resource on the source working frequency point is an uplink resource on the target working frequency point.

14. The terminal device of claim 12,

the management module is specifically configured to receive, before spectrum switching, a dedicated signaling or a system broadcast message from the base station device at a source working frequency point, where the dedicated signaling or the system broadcast message carries uplink resources, which are allocated to the terminal device by the base station device, at a target working frequency point; or, when the authorized user reappears on the source working frequency point or the channel quality of the source working frequency point is reduced, receiving a spectrum switching command from the base station equipment, where the spectrum switching command includes a target working frequency point and/or wireless resource configuration information, and an uplink resource on the target working frequency point allocated to the terminal equipment by the base station equipment.

15. The terminal device of claim 12,

the management module is further used for statically stipulating an uplink transmission mode on a source working frequency point as an uplink transmission mode on a target working frequency point through a protocol with the base station equipment; or,

16. The terminal device of claim 12,

the judging module is specifically configured to judge whether a time length between a current time or a time when the terminal device sends a spectrum switching completion message and a time when uplink timing synchronization point adjustment is performed last time does not exceed a specified time threshold, and whether a center frequency interval between a target working frequency point and a source working frequency point does not exceed a specified frequency threshold; if so, determining that the uplink synchronization is maintained between the terminal equipment and the base station equipment; if not, determining that the uplink synchronization between the terminal equipment and the base station equipment is not maintained; or when the authorized user reappears on the source working frequency point or the channel quality of the source working frequency point is reduced, receiving a frequency spectrum switching command from the base station equipment, wherein the frequency spectrum switching command comprises target working frequency point and/or wireless resource configuration information and indication information of whether uplink synchronization is maintained between the base station equipment and the terminal equipment; and determining that the uplink synchronization is maintained or not maintained between the terminal equipment and the base station equipment by using the indication information carried in the frequency spectrum switching command.

17. A base station apparatus, comprising:

a receiving module, configured to receive, at a target working frequency point, a spectrum handover completion message sent by the terminal device to the base station device by using the uplink resource after the base station device recovers a cell at the target working frequency point;

the management module is also used for appointing an uplink transmission mode on a target working frequency point with the terminal equipment; or, distributing an uplink transmission mode on a target working frequency point for the terminal equipment, and transmitting the uplink transmission mode to the terminal equipment on a source working frequency point;

the receiving module is specifically configured to receive, at a target working frequency point, a spectrum handover completion message sent by the terminal device to the base station device by using the uplink resource and the uplink sending mode.

18. The base station apparatus of claim 17,

the management module is specifically configured to statically stipulate, with the terminal device through a protocol, that the uplink resource on the source working frequency point is an uplink resource on the target working frequency point.

19. The base station apparatus of claim 17,

the management module is specifically configured to send a dedicated signaling or a system broadcast message to the terminal device at a source working frequency point before spectrum switching, where the dedicated signaling or the system broadcast message carries uplink resources, which are allocated to the terminal device by the base station device, at a target working frequency point; or when the authorized user reappears on the source working frequency point or the channel quality of the source working frequency point is reduced, sending a frequency spectrum switching command to the terminal equipment, wherein the frequency spectrum switching command comprises a target working frequency point and/or wireless resource configuration information and uplink resources, distributed by the base station equipment for the terminal equipment, on the target working frequency point.

20. The base station apparatus of claim 17,

the management module is further used for statically stipulating an uplink sending mode on a source working frequency point as an uplink sending mode on a target working frequency point through a protocol with the terminal equipment; or,

21. The base station apparatus of claim 17,

the management module is further configured to generate a spectrum switching command when an authorized user reappears at the source working frequency point or the channel quality of the source working frequency point is reduced, and send the spectrum switching command to the terminal device; the frequency spectrum switching command comprises target working frequency points and/or wireless resource configuration information and indication information of whether uplink synchronization is maintained between the base station equipment and the terminal equipment.

22. The base station apparatus of claim 21,

the management module is further configured to determine whether uplink synchronization is maintained between the base station device and the terminal device by:

judging whether the time length between the moment when the terminal equipment sends the frequency spectrum switching completion message and the moment when the terminal equipment sends the timing adjustment command at the latest time does not exceed a specified time threshold or not, and whether the central frequency interval between the target working frequency point and the source working frequency point does not exceed a specified frequency threshold or not; if so, determining that the uplink synchronization is maintained between the base station equipment and the terminal equipment; and if not, determining that the uplink synchronization between the base station equipment and the terminal equipment is not maintained.